10-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10‑K

☒	ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the fiscal year ended December 31, 2015
OR
☐	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from              to

Commission File No. 0‑14719

SKYWEST, INC.

Incorporated under the Laws of Utah 87‑0292166
(IRS Employer ID No.)

444 South River Road

St. George, Utah 84790

(435) 634‑3000

Securities Registered Pursuant to Section 12(b) of the Act: None

Securities Registered Pursuant to Section 12(g) of the Act:

Common Stock, No Par Value

Indicate by check mark if the registrant is a well‑known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes ☐  No ☒

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes ☐  No ☒

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒  No ☐

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S‑T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes ☒  No ☐

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S‑K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in the definitive proxy or information statements incorporated by reference in Part III of this Form 10‑K or any amendment to this Form 10‑K. ☒

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non‑accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,”“accelerated filer” and “smaller reporting company” in Rule 12b‑2 of the Exchange Act.

Large accelerated filer ☒ Accelerated filer ☐ Non‑accelerated filer ☐
(Do not check if a
smaller reporting company) Smaller reporting company ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b‑2 of the Act). Yes ☐  No ☒

The aggregate market value of the registrant’s common stock held by non‑ affiliates (based upon the closing sale price of the registrant’s common stock on The Nasdaq National Market) on June 30,  2015 was approximately $759,240,572.

As of February 16, 2016, there were 51,127,542 shares of the registrant’s common stock outstanding.

Documents Incorporated by Reference

Portions of the registrant’s proxy statement to be used in connection with the Registrant’s  2015 Annual Meeting of Shareholders are incorporated by reference into Part III of this Report as specified.

SKYWEST, INC.

ANNUAL REPORT ON FORM 10‑K

TABLE OF CONTENTS

		Page No.
PART I
Cautionary Statement Concerning Forward Looking Statements		3
Item 1.	Business	3
Item 1A.	Risk Factors	15
Item 1B.	Unresolved Staff Comments	25
Item 2.	Properties	25
Item 3.	Legal Proceedings	28
Item 4.	Mine Safety Disclosures	28
PART II
Item 5.	Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities	28
Item 6.	Selected Financial Data	30
Item 7.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	32
Item 7A.	Quantitative and Qualitative Disclosures About Market Risk	54
Item 8.	Financial Statements and Supplementary Data	55
Item 9.	Changes in and Disagreements with Accountants on Accounting and Financial Disclosure	86
Item 9A.	Controls and Procedures	86
Item 9B.	Other Information	88
PART III
Item 10.	Directors, Executive Officers and Corporate Governance	88
Item 11.	Executive Compensation	88
Item 12.	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters	88
Item 13.	Certain Relationships and Related Transactions	88
Item 14.	Principal Accountant Fees and Services	88
PART IV
Item 15.	Exhibits and Financial Statement Schedules	88
Signatures		94

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PART I

Unless otherwise indicated in this Report, “SkyWest,” “we,” “us,” “our” and similar terms refer to SkyWest, Inc. and “SkyWest Airlines” refers to our wholly‑owned subsidiary, SkyWest Airlines, Inc.

Effective December 31, 2011, our subsidiary, ExpressJet Airlines, Inc. was merged into our subsidiary, Atlantic Southeast Airlines, Inc., with the surviving corporation named ExpressJet Airlines, Inc. (the “ExpressJet Combination”). In this Report, “Atlantic Southeast” refers to Atlantic Southeast Airlines, Inc. for periods prior to the ExpressJet Combination, “ExpressJet Delaware” refers to ExpressJet Airlines, Inc., a Delaware corporation, for periods prior to the ExpressJet Combination, and “ExpressJet” refers to ExpressJet Airlines, Inc., the Utah corporation resulting from the ExpressJet Combination, for periods subsequent to the ExpressJet Combination.

Cautionary Statement Concerning Forward‑Looking Statements

Certain of the statements contained in this Report should be considered “forward‑looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. These forward‑looking statements may be identified by words such as “may,” “will,” “expect,” “intend,” “anticipate,” “believe,” “estimate,” “plan,” “project,” “could,” “should,” “hope,” “likely,” and “continue” and similar terms used in connection with statements regarding our outlook, anticipated operations, the revenue environment, our contractual relationships, and our anticipated financial performance. These statements include, but are not limited to, statements about our future growth and development plans, including our future financial and operating results, our plans for SkyWest Airlines and ExpressJet, our objectives, expectations and intentions and other statements that are not historical facts. Readers should keep in mind that all forward‑looking statements are based on our existing beliefs about present and future events outside of our control and on assumptions that may prove to be incorrect. If one or more risks identified in this Report materializes, or any other underlying assumption proves incorrect, our actual results will vary, and may vary materially, from those anticipated, estimated, projected, or intended. These risks and uncertainties include, but are not limited to, those described below in Item 1A. Risk Factors.

There may be other factors that may affect matters discussed in forward‑looking statements set forth in this Report, which factors may also cause actual results to differ materially from those discussed. We assume no obligation to publicly update any forward‑looking statement to reflect actual results, changes in assumptions or changes in other factors affecting these statements other than as required by applicable law.

ITEM 1.  BUSINESS

General

Through SkyWest Airlines and ExpressJet, we offer scheduled passenger service with approximately 3,400 daily departures to destinations in the United States, Canada, Mexico and the Caribbean. Substantially all of our flights are operated as Delta Connection, United Express, American Eagle or Alaska under code‑share arrangements with Delta Air Lines, Inc. (“Delta”), United Air Lines, Inc. (“United”), American Airlines, Inc. (“American”) or Alaska Airlines, Inc. (“Alaska”), respectively. SkyWest Airlines and ExpressJet generally provide regional flying to our partners under long‑term, fixed‑fee code‑share agreements. Among other features of our fixed‑fee agreements, our major airline partners generally reimburse us for specified direct operating expenses (including fuel expense, which is passed through to our partners), and pay us a fee for operating the aircraft.

On December 31, 2011, Atlantic Southeast and ExpressJet Delaware completed the ExpressJet Combination. Since November 17, 2011, the operations formerly conducted by Atlantic Southeast and ExpressJet Delaware have been conducted under a single operating certificate issued by the U.S. Federal Aviation Administration (the “FAA”).

SkyWest Airlines and ExpressJet have developed industry‑leading reputations for providing quality regional airline service during their long operating histories. SkyWest Airlines has been flying since 1972 and ExpressJet (and its predecessors) since 1979. As of December 31, 2015,  we had a combined fleet of 702 aircraft consisting of the following:

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	CRJ200	CRJ700	CRJ900	ERJ135	ERJ145	E175	EMB120	Total
United	83	70	—	5	166	40	—	364
Delta	111	60	64	—	—	—	—	235
American	31	—	—	—	16	—	—	47
Alaska	—	9	—	—	—	5	—	14
Aircraft in scheduled service	225	139	64	5	182	45	—	660
Subleased to an un-affiliated entity	2	—	—	—	—	—	—	2
Other*	10	—	—	4	—	—	26	40
Total	237	139	64	9	182	45	26	702

*Other aircraft consisted of leased aircraft removed from service that were in the process of being returned to the lessor and owned aircraft removed from service that werefor sale.

As of December 31, 2015, our fleet scheduled for service consisted of aircraft manufactured by Bombardier Aerospace (“Bombardier”) and Embraer S.A. (“Embraer”) summarized as follows:

Manufacturer	Aircraft Type	Seat Configuration
Bombardier	CRJ900s	76
Bombardier	CRJ700s	66-70
Bombardier	CRJ200s	50
Embraer	E175s	76
Embraer	ERJ145s	50
Embraer	ERJ135s	37

We ceased operation of the 30‑seat Embraer Brasilia EMB‑ 120 turboprop (the “EMB120”) during the fiscal year ended December 31, 2015.

We were incorporated in Utah in 1972. Our principal executive offices are located at 444 South River Road, St. George, Utah 84790, and our primary telephone number is (435) 634‑3000. We maintain an internet website at inc.skywest.com, which provides a link to our annual, quarterly and current reports filed with the Securities and Exchange Commission (“SEC”). In addition, we provide electronic or paper copies of our SEC filings free of charge upon request.

Our Operating Platforms

SkyWest Airlines

SkyWest Airlines provides regional jet service to airports primarily located in the Midwestern and Western United States, as well as Mexico and Canada. SkyWest Airlines offered approximately 1,700 daily scheduled departures as of December 31, 2015, of which approximately 920 were United Express flights, 560 were Delta Connection flights,  170 were American Eagleflights and 50 were Alaska‑coded flights. SkyWest Airlines’ operations are conducted principally from airports located in Chicago (O’Hare), Denver, Los Angeles, Houston, Minneapolis, Portland, Seattle, Phoenix, San Francisco and Salt Lake City. As of December 31, 2015, SkyWest Airlines operated a fleet of 348 aircraft consisting of the following:

	CRJ200	CRJ700	CRJ900	E175	Total
United	83	70	—	40	193
Delta	69	19	36	—	124
American	17	—	—	—	17
Alaska	—	9	—	5	14
Total	169	98	36	45	348

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SkyWest Airlines conducts its code‑share operations with its major airline partners pursuant to the following agreements:

Major airline partner	Agreement
United	“SkyWest Airlines United Express Agreements” and “SkyWest Airlines United Express Pro‑rate Agreement”
Delta	“SkyWest Airlines Delta Connection Agreement” and “SkyWest Airlines Delta Pro‑rate Agreement”
American	“SkyWest Airlines American Agreement” and “SkyWest Airlines American Pro‑rate Agreement”
Alaska	“SkyWest Airlines Alaska Agreement”

A summary of the terms for each SkyWest Airlines code‑share agreement with the respective major partner is provided under the heading “Code Share Agreements” below on page 6.

ExpressJet

ExpressJet provides regional jet service principally in the Eastern United States, primarily from airports located in Atlanta, Cleveland, Chicago (O’Hare), Houston, Detroit, Memphis, Newark and Minneapolis, as well as Mexico and Canada. ExpressJet offered approximately 1,658 daily scheduled departures as of December 31, 2015, of which approximately 926 were Delta Connection flights, 586 were United Express flights and 146 were American Eagle flights. As of December 31, 2015, ExpressJet operated a fleet of 312 aircraft consisting of the following:

	CRJ200	ERJ145	ERJ135	CRJ700	CRJ900	Total
United	—	166	5	—	—	171
Delta	42	—	—	41	28	111
American	14	16	—	—	—	30
Total	56	182	5	41	28	312

ExpressJet conducts its code‑share operations with its major airline partners pursuant to the following agreements:

Major airline partner	Agreement
United (ERJ aircraft types)	“ExpressJet United ERJ Agreement”
United (CRJ aircraft types)	“ExpressJet United CRJ Agreement”
Delta	“ExpressJet Delta Connection Agreement”
American	“ExpressJet American Agreement” and “ExpressJet American Pro‑rate Agreement”

A summary of the terms for each ExpressJet code‑share agreement with the respective major partner is provided under the heading “Code Share Agreements” below on page 6.

Competition and Economic Conditions

The airline industry is highly competitive. SkyWest Airlines and ExpressJet compete principally with other regional airlines. The combined operations of SkyWest Airlines and ExpressJet extend throughout most major geographic markets in the United States. Our competition includes, therefore, nearly every other domestic regional airline. The primary competitors of SkyWest Airlines and ExpressJet include Air Wisconsin Airlines Corporation (“Air Wisconsin”); Envoy Air Inc. (“Envoy”), PSA Airlines, Inc. (“PSA”) and Piedmont Airlines (“Piedmont”) (Envoy, PSA and Piedmont are owned by American); Horizon Air Industries, Inc. (“Horizon”) (owned by Alaska Air Group, Inc.); Mesa Air Group, Inc. (“Mesa”); Endeavor, Inc. (“Endeavor”) (owned by Delta); Republic Airways Holdings Inc. (“Republic”); and Trans State Airlines, Inc. (“Trans State”). Major airlines typically award additional code-share flying arrangements to regional airlines based primarily upon the following criteria: ability to fly contracted schedules,

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availability of labor resources, including pilots, low operating cost, financial resources, geographical infrastructure, overall customer service levels relating to on‑time arrival and flight completion percentages and the overall image of the regional airline.

The principal competitive factors for regional airline code‑share arrangements include labor resources, code‑share agreement terms, reliable flight operations, operating cost structure, certification to operate certain aircraft types, geographical infrastructure and markets and routes served.

The combined operations of SkyWest Airlines and ExpressJet represent the largest regional airline operations in the United States. However, regional carriers owned by major airlines may have access to greater resources through their parent companies than SkyWest Airlines and ExpressJet.

Generally, the airline industry is highly sensitive to changes in general economic conditions. Economic downturns, combined with competitive pressures, have contributed to a number of reorganizations, bankruptcies, liquidations and business combinations among major and regional carriers. The effect of economic downturns may be somewhat mitigated by the predominantly contract based flying arrangements of SkyWest Airlines and ExpressJet. If, however, any of our code share partners experience a prolonged decline in the number of passengers or are negatively affected by low ticket prices or high fuel prices, they may seek to renegotiate their code share agreements with SkyWest Airlines or ExpressJet, or materially reduce scheduled flights in order to reduce their costs. In addition, adverse weather conditions can impact our ability to complete scheduled flights and have a negative impact on our operations and financial condition.

Industry Overview

Major and Regional Airlines

The airline industry in the United States has traditionally been comprised of several major airlines, including American, Delta and United. The major airlines offer scheduled flights to most major U.S. cities, numerous smaller U.S. cities, and cities throughout the world through a hub and spoke network.

Regional airlines, such as SkyWest Airlines, ExpressJet, Mesa, Air Wisconsin, Endeavor, Trans State and Republic, typically operate smaller aircraft on lower‑volume routes than major and low‑cost carriers. Several regional airlines, including Envoy, Endeavor, PSA, Piedmont and Horizon, are wholly‑owned subsidiaries of major airlines.

Regional airlines generally do not try to establish an independent route system to compete with the major airlines. Rather, regional airlines typically enter into relationships with one or more major airlines, pursuant to which the regional airline agrees to use its smaller, lower‑cost aircraft to carry passengers booked and ticketed by the major airline between a hub of the major airline and a smaller outlying city. In exchange for such services, the major airline pays the regional airline either a fixed flight fee, termed “contract” or “fixed‑fee” flights, or receives a percentage of applicable passenger ticket revenues, termed “pro‑rate” or “revenue‑sharing” flights as described in more detail below.

Code‑Share Agreements

Regional airlines generally enter into code‑share agreements with major airlines, pursuant to which the regional airline is authorized to use the major airline’s two‑letter flight designator codes to identify the regional airline’s flights and fares in the central reservation systems, to paint its aircraft with the colors and/or logos of its code‑share partner and to market and advertise its status as a carrier for the code‑share partner. Code‑share agreements also generally obligate the major airline to provide services such as reservations, ticketing, ground support and gate access to the regional airline, and the major partners often coordinate marketing, advertising and other promotional efforts. In exchange, the regional airline provides a designated number of low‑capacity (usually between 50 and 76 seats) flights between larger airports served by the major airline and surrounding cities, usually in lower‑volume markets. The financial arrangements between the regional airlines and their code‑share partners usually involve either fixed‑fee arrangements or revenue‑sharing arrangements as explained below:

· Fixed‑Fee Arrangements.  Under a fixed‑fee arrangement (referenced in this report as a “fixed‑fee arrangement,” “contract flying” or a “capacity purchase agreement”), the major airline generally pays the regional airline a fixed‑fee for each departure, flight or block hours incurred, and an amount per aircraft in

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service each month with additional incentives based on completion of flights, on‑ time performance and other operating metrics. In addition, the major and regional airline often enter into an arrangement pursuant to which the major airline bears the risk of changes in the price of fuel and other such costs that are passed through to the major airline partner. Regional airlines benefit from a fixed‑fee arrangement because they are sheltered from some of the elements that cause volatility in airline financial performance, including variations in ticket prices, number of passengers and fuel prices. However, regional airlines in fixed‑fee arrangements generally do not benefit from positive trends in ticket prices (including ancillary revenue programs), the number of passengers enplaned or fuel prices because the major airlines retain passenger fare volatility risk and fuel costs associated with the regional airline flight.

· Revenue‑Sharing Arrangements.  Under a revenue‑sharing arrangement (referenced in this report as a “revenue‑sharing” arrangement or “pro‑rate” arrangement), the major airline and regional airline negotiate a passenger fare proration formula, pursuant to which the regional airline receives a percentage of the ticket revenues for those passengers traveling for one portion of their trip on the regional airline and the other portion of their trip on the major airline. Substantially all costs associated with the regional airline flight are borne by the regional airline. In such a revenue‑sharing arrangement, the regional airline may realize increased profits as ticket prices and passenger loads increase or fuel prices decrease and, correspondingly, the regional airline realizes decreased profits as ticket prices and passenger loads decrease or fuel prices increase.

SkyWest Airlines has code‑share agreements with United, Delta, American and Alaska. ExpressJet has code‑share agreements with United, Delta and American.

During the year ended December 31, 2015, approximately 86.3% of our passenger revenues related to fixed‑fee contract flights, where Delta, United, Alaska and American controlled scheduling, ticketing, pricing and seat inventories. The remainder of our passenger revenues during the year ended December 31, 2015 related to pro‑rate flights for Delta, United or American, where we controlled scheduling, pricing and seat inventories, and shared passenger fares with Delta, United or American according to pro‑rate formulas. The following summaries of our code‑share agreements do not purport to be complete and are qualified in their entirety by reference to the applicable agreement.

Under our fixed-fee arrangements, the major airline partners compensate us for our costs of owning or leasing the aircraft on a monthly basis. The aircraft compensation structure varies by agreement, but is intended to cover either our aircraft principal and interest debt service costs, our aircraft depreciation and interest expense or our aircraft lease expense costs while the aircraft is under contract. Under our ExpressJet United ERJ Agreement and our ExpressJet American ERJ145 Agreement, the major partner provides the aircraft to us for a nominal amount. The number of aircraft under our fixed‑fee arrangements and our pro‑rate arrangements as of December 31, 2015 is reflected in the summary below.

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Delta Connection Agreements

	Number of		Pass through costs
	aircraft under	Term / Termination	or costs paid directly
Agreement	agreements	Dates	by major partner
SkyWest Airlines	• CRJ 200 - 48	• The contract is scheduled to expire on an individual aircraft basis commencing in 2016	• Fuel
Delta Connection	• CRJ 700 - 19	• The final aircraft is scheduled to expire in 2022	• Engine Maintenance
Agreement (fixed-fee arrangement)	• CRJ 900 - 36	• The average remaining term of the aircraft under contract is 3.8 years	• Landing fees
		• Upon expiration, aircraft may be renewed or extended	• Station Rents, Deice
			• Insurance
ExpressJet Delta	• CRJ 200 - 42	• The contract is scheduled to expire on an individual aircraft basis commencing in 2016	• Fuel
Connection	• CRJ 700 - 41	• The final aircraft is scheduled to expire in 2022	• Engine Maintenance
Agreement (fixed-fee arrangement)	• CRJ 900 - 28	• The average remaining term of the aircraft under contract is 3.7 years	• Landing fees
		• Upon expiration, aircraft may be renewed or extended	• Station Rents, Deice
			• Insurance
SkyWest Airlines	• CRJ 200 - 21	• Terminable with 30 days' notice	• None
Pro-rate Agreement (revenue-sharing agreement)

United Express Agreements

			Pass through costs
	Number of		or costs paid
	aircraft under	Term / Termination	directly by major
Agreement	agreements	Dates	partner
SkyWest Airlines	• CRJ 200 - 57	• The contract is scheduled to expire on an individual aircraft basis commencing in 2016	• Fuel
United Express	• CRJ 700 - 70	• The final aircraft is scheduled to expire in 2027	• Landing fees
Agreements (fixed-fee	• E175 - 40	• The average remaining term of the aircraft under contract is 4.3 years	• Station Rents, Deice
arrangement)		• Upon expiration, aircraft may be renewed or extended	• Insurance
ExpressJet United ERJ	• ERJ 135 - 5	• The contract is scheduled to expire on an individual aircraft basis commencing in 2016	• Fuel
Agreement (fixed-fee arrangement)	• ERJ 145 - 166	• The final aircraft is scheduled to expire in 2017	• Engine Maintenance
		• The average remaining term of the aircraft under contract is 1.9 years	• Landing fees
		• Upon expiration, aircraft may be renewed or extended	• Station Rents, Deice
			• Insurance
SkyWest Airlines United	• CRJ 200 - 26	• Terminable with 120 days' notice	• None
Express Pro-rate Agreement (revenue-sharing arrangement)

Alaska Capacity Purchase Agreement

			Pass through costs
	Number of		or costs paid
	aircraft under	Term / Termination	directly by major
Agreement	agreements	Dates	partner
SkyWest Airlines	• CRJ 700 - 9	• The contract is scheduled to expire on an individual aircraft basis commencing in 2016	• Fuel
Alaska Agreement	• E175 - 5	• The final aircraft is scheduled to expire in 2028	• Landing fees
(fixed-fee arrangement)		• Upon expiration, aircraft may be renewed or extended	• Station Rents, Deice
			• Insurance

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American Agreements

			Pass through costs
	Number of		or costs paid
	aircraft under	Term / Termination	directly by major
Agreement	agreements	Dates	partner
SkyWest Airlines	• CRJ 200 - 12	• Scheduled to expire in 2016	• Fuel
American Agreement		• Upon expiration, aircraft may be renewed or extended	• Landing fees
(fixed-fee agreement)			• Station Rents, Deice
			• Insurance
SkyWest Airlines	• CRJ 200 - 5	• Terminable with 120 days' notice	• None
American Pro-rate
Agreement (revenue-
sharing agreement)
ExpressJet American	• CRJ 200 - 11	• Scheduled to expire in 2017	• Fuel
Agreement (fixed-fee	• ERJ 145 - 16	• Upon expiration, aircraft may be renewed or extended	• Landing fees
agreement)			• Station Rents, Deice
			• Insurance
ExpressJet American Pro-rate	• CRJ 200 - 3	• Terminable with 120 days' notice	• None
Agreement (revenue-sharing agreement)

As of December 31, 2015, we anticipate placing an additional 25 E175 aircraft with United, ten additional E175 aircraft with Alaska and 19 E175 aircraft with Delta. The delivery dates for the new aircraft are expected to take place from January 2016 to June 2017.

SkyWest Airlines and ExpressJet Delta Connection Agreements

SkyWest Airlines and ExpressJet are each parties to a Delta Connection Agreement, pursuant to which SkyWest Airlines and ExpressJet provide contract flight services for Delta. The SkyWest Airlines and ExpressJet Delta Connection Agreements contain multi‑year rate reset provisions that became operative in 2010 and reset each fifth year thereafter. Delta additionally has the right to require that certain contractual rates under those agreements shall not exceed the second lowest of all carriers within the Delta Connection program. SkyWest Airlines and ExpressJet have agreed with Delta on contractual rates that are effective through December 31, 2015.  A rate reset period became effective on January 1, 2016.

The SkyWest Airlines Delta Connection Agreement is scheduled to terminate on December 31, 2022 for the CRJ aircraft. The SkyWest Airlines Delta Connection Agreement is subject to early termination in various circumstances, including:

· if SkyWest Airlines or Delta commits a material breach of the SkyWest Airlines Delta Connection Agreement, subject to 30‑day notice and cure rights;

· if SkyWest Airlines fails to conduct all flight operations and maintain all aircraft under the SkyWest Airlines Delta Connection Agreement in compliance in all material respects with applicable government regulations;

· if SkyWest Airlines fails to satisfy certain performance and safety requirements;

· if, under certain circumstances, Delta has a right to terminate the ExpressJet Delta Connection Agreement;

· if the other party files for bankruptcy, reorganization or similar action (subject to limitations imposed by the U.S. Bankruptcy Code) or if either party makes an assignment for the benefit of creditors; or

· if SkyWest Airlines fails to maintain competitive base rate costs (provided, however, that SkyWest Airlines has the right to adjust its rates prior to any such termination).

In October 2015, SkyWest Airlines reached an agreement with Delta to place 19 new E175 aircraft into service pursuant to the SkyWest Airlines Delta Connection Agreement.  Under the agreement, we anticipate that delivery of the

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E175 aircraft to be flown for Delta will begin in August 2016, with all 19 aircraft being delivered by mid-2017. The E175 agreement has a nine-year term for each of the aircraft subject to the agreement.

The ExpressJet Delta Connection Agreement is scheduled to terminate on December 31, 2022, subject to certain Delta extension rights. The ExpressJet Delta Connection Agreement is subject to early termination in various circumstances including:

· if ExpressJet or Delta commits a material breach of the ExpressJet Delta Connection Agreement, subject to 30‑day notice and cure rights;

· if ExpressJet fails to conduct all flight operations and maintain all aircraft under the ExpressJet Delta Connection Agreement in compliance in all material respects with applicable government regulations;

· if ExpressJet fails to satisfy certain performance and safety requirements;

· if, under certain circumstances, Delta has a right to terminate the SkyWest Airlines Delta Connection Agreement;

· if the other party files for bankruptcy, reorganization or similar action (subject to limitations imposed by the U.S. Bankruptcy Code) or if either party makes an assignment for the benefit of creditors; or

· if ExpressJet fails to maintain competitive base rate costs (provided, however, that ExpressJet has the right to adjust its rates prior to any such termination).

SkyWest Airlines United Express Agreements

SkyWest Airlines and United are parties to two United Express agreements: a United Express agreement to operate certain CRJ200s and CRJ700s, and a United Express agreement to operate E175 aircraft (collectively, the “SkyWest Airlines United ExpressJet Agreements”). Under the E175 agreement, SkyWest Airlines began service in May 2014 and 40 E175 aircraft had been delivered as of December 31, 2015. We anticipate deliveries of the remaining 25E175 aircraft will continue through 2017. The E175 agreement has a 12‑year term for each of the aircraft subject to the agreement.

The SkyWest Airlines United Express Agreements have a latest scheduled termination date in 2027. The SkyWest Airlines United Express Agreements are subject to early termination in various circumstances including:

· if SkyWest Airlines or United fails to fulfill an obligation under the SkyWest Airlines United Express Agreements for a period of 60 days after written notice to cure;

· if SkyWest Airlines’ operations fall below certain performance levels for a period of three consecutive months;

· subject to limitations imposed by the U.S. Bankruptcy Code, if the other party becomes insolvent, fails to pay its debts when due, takes action leading to its cessation as a going concern, makes an assignment of substantially all of its assets, or ceases or suspends operations; or

· if bankruptcy proceedings are commenced against the other party (subject to limitations imposed by the U.S. Bankruptcy Code) and certain specified conditions are not satisfied.

ExpressJet United ERJ Agreement

Effective November 12, 2010, ExpressJet Delaware and Continental entered into the ExpressJet United ERJ Agreement, whereby ExpressJet Delaware agreed to provide regional airline service in the Continental flight system. The

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rights and obligations of ExpressJet Delaware under the ExpressJet United ERJ Agreement became the rights and obligations of ExpressJet as a consequence of the ExpressJet Combination. The rights and obligations of Continental under the ExpressJet United ERJ Agreement became the rights and obligations of United as a consequence of United’s merger with Continental in 2010. The ExpressJet United ERJ Agreement was amended and restated on November 7, 2014, which among other modifications, reduced the term of the agreement.

The ExpressJet United ERJ Agreement is scheduled to terminate in December 2017, subject to early termination by United or ExpressJet upon the occurrence of certain events. United’s termination rights include the right to terminate the ExpressJet United ERJ Agreement if ExpressJet’s performance falls below identified standards (and such failure is not cured within 60 days following receipt of notice), upon the occurrence of a labor strike lasting 15 days or longer and upon the occurrence of a material default under certain lease agreements relating to aircraft operated by ExpressJet under the ExpressJet United ERJ Agreement (provided that such material default is not cured within 60 days following receipt of notice). ExpressJet’s termination rights include the right to terminate the ExpressJet United ERJ Agreement if United fails to make payment of $500,000 or more due to ExpressJet under the ExpressJet United ERJ Agreement and such failure is not cured within five business days following receipt of notice. Additionally, effective January 1, 2018, United has the right to extend the term for a 12‑month period for a certain number of aircraft upon 180 days written notice. United also has the right to extend the term for a second 12‑month period for a certain number of aircraft upon 180 days written notice.

Under the terms of the ExpressJet United ERJ Agreement, ExpressJet operates 166 ERJ145s and five ERJ135s in the United flight system. All of such ERJ145s and ERJ 135s are leased to ExpressJet by United pursuant to sublease or lease agreements. Upon the expiration of the ExpressJet United ERJ Agreement, ExpressJet is obligated to return the subleased or leased aircraft to United. As of December 31, 2015, ExpressJet had removed four ERJ135s from service and was in the process of returning such aircraft to United. During the 2016 calendar year, ExpressJet anticipates removing 20 ERJ145s and five ERJ135s from contract and intends to return the aircraft to United under the aircraft lease agreement.

SkyWest Airlines American Agreement

On September 11, 2012, SkyWest Airlines and American entered into the SkyWest Airlines American Agreement. The SkyWest Airlines American Agreement is scheduled to terminate in 2016 and is subject to early termination in various circumstances including:

· if SkyWest Airlines or American fails to fulfill an obligation under the SkyWest Airlines American Agreement for a period of 30 days after written notice to cure;

· if SkyWest Airlines’ operations fall below certain performance levels;

· subject to limitations imposed by the U.S. Bankruptcy Code, if the other party makes a general assignment for the benefit of creditors or becomes insolvent; or

· if bankruptcy proceedings are commenced against the other party (subject to limitations imposed by the U.S. Bankruptcy Code) and certain specified conditions are not satisfied.

ExpressJet American Agreement

On September 11, 2012, ExpressJet and American entered into the ExpressJet American Agreement. The ExpressJet American Agreement is scheduled to terminate in 2017. The ExpressJet American Agreement is subject to early termination in various circumstances including:

· if ExpressJet or American fails to fulfill an obligation under the ExpressJet American Agreement for a period of 30 days after written notice to cure;

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· if ExpressJet’s operations fall below certain performance levels;

· subject to limitations imposed by the U.S. Bankruptcy Code, if the other party makes a general assignment for the benefit of creditors or becomes insolvent; or

· if bankruptcy proceedings are commenced against the other party (subject to limitations imposed by the U.S. Bankruptcy Code) and certain specified conditions are not satisfied.

SkyWest Airlines Alaska Agreement

On April 13, 2011, SkyWest Airlines and Alaska entered into the SkyWest Airlines Alaska Capacity Purchase Agreement. The SkyWest Airlines Alaska Capacity Purchase Agreement is scheduled to terminate in 2018.

SkyWest and Alaska amended the SkyWest Airlines Alaska Capacity Purchase Agreement to establish a 12‑year fixed‑fee arrangement for SkyWest to operate 15 new E175 aircraft for Alaska.Under the amended agreement, SkyWest Airlines began service in July 2015 and five E175 aircraft had been delivered as of December 31, 2015. We anticipate deliveries of the remaining E175 aircraft will continue through mid-2017.The E175 agreement has a 12‑year term for each of the aircraft subject to the agreement. The SkyWest Airlines Alaska Capacity Purchase Agreement is subject to early termination in various circumstances including:

· if SkyWest Airlines or Alaska fails to fulfill an obligation under the SkyWest Airlines Alaska Capacity Purchase Agreement for a period of 30 days after written notice to cure;

· if SkyWest Airlines’ operational performance falls below certain performance levels;

· subject to limitations imposed by the U.S. Bankruptcy Code, if the other party makes a general assignment for the benefit of creditors or becomes insolvent; or

· if bankruptcy proceedings are commenced against the other party (subject to limitations imposed by the U.S. Bankruptcy Code) and certain specified conditions are not satisfied.

Segment Financial Information

See Management’s Discussion and Analysis of Financial Condition and Results of Operations, set forth in Item 7 of this Report, and Note 2 to our Consolidated Financial Statements for the fiscal year ended December 31, 2015, included in Item 8 of this Report, for financial information regarding our business segments.

Training and Aircraft Maintenance

SkyWest Airlines and ExpressJet provide substantially all training to their crew members and maintenance personnel at their respective training facilities.SkyWest Airlines and ExpressJetemployees perform routine airframe and engine maintenance along with periodic inspections of equipment at their respective maintenance facilities.  SkyWest Airlines and ExpressJet also use third‑party vendors for certain airframe and engine maintenance work.

Fuel

Our fixed‑fee agreements with Delta, United, American and Alaska provide that fuel costs we incur underthose agreementsare to be reimbursed, thereby reducing our exposure to fuel price fluctuations. Under our pro-rate agreements we are responsible for the costs we incur under those agreements and are exposed to fuel price fluctuations which we buy directly from our fuel suppliers. During the year ended December 31, 2015, United and Delta purchased the majority of the fuel for our aircraft flying under their respective fixed-fee agreements under contract directly from their fuel vendors.  Historically, we have not experienced problems with the availability of fuel, and believe we will be able to obtain fuel in quantities sufficient to meet our existing and anticipated future requirements at competitive prices. Standard industry

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contracts generally do not provide protection against fuel price increases, nor do they ensure availability of supply.A substantial increase in the price of jet fuel, to the extent our fuel costs are not reimbursed, or our lack of adequate fuel supplies in the future, could have a material adverse effect on our business, financial condition, results of operations or liquidity.

Employee Matters

Railway Labor Act

Our relations with labor unions in the U.S. are governed by the Railway Labor Act (the “RLA”). Under the RLA, a labor union seeking to represent an unrepresented craft or class of employees is required to file with the National Mediation Board (the “NMB”) an application alleging a representation dispute, along with authorization cards signed by at least 35% of the employees in that craft or class. The NMB then investigates the dispute and, if it finds the labor union has obtained a sufficient number of authorization cards, conducts an election to determine whether to certify the labor union as the collective bargaining representative of that craft or class. Under the NMB’s usual rules, a labor union will be certified as the representative of the employees in a craft or class only if more than 50% of those employees vote for union representation. A certified labor union then enters into negotiations toward a collective bargaining agreement with the employer.

Under the RLA, a collective bargaining agreement between an airline and a labor union does not expire, but instead becomes amendable as of a stated date. Either party may request that the NMB appoint a federal mediator to participate in the negotiations for a new or amended agreement. If no agreement is reached in mediation, the NMB may determine, at any time, that an impasse exists and offer binding arbitration. If either party rejects binding arbitration, a 30‑day “cooling off” period begins. At the end of this 30‑day period, the parties may engage in “self help,” unless the U.S. President appoints a Presidential Emergency Board (“PEB”) to investigate and report on the dispute. The appointment of a PEB maintains the “status quo” for an additional 60 days. If the parties do not reach agreement during this period, the parties may then engage in “self help.” “Self help” includes, among other things, a strike by the union or the imposition of proposed changes to the collective bargaining agreement by the airline. The U.S. Congress and the President have the authority to prevent “self help” by enacting legislation that, among other things, imposes a settlement on the parties.

Collective Bargaining

As of December 31, 2015, we had approximately 18,300 full‑time equivalent employees. Approximately 38.0% of these employees were represented by unions, including the employee groups listed in the table below. Notwithstanding the completion of the ExpressJet Combination, ExpressJet’s employee groups primarily continue to be represented by those unions who provided representation prior to the ExpressJet Combination. Accordingly, the following table refers to ExpressJet’s employee groups based upon their union affiliations prior to the ExpressJet Combination.

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	Approximate
	Number of
	Active Employees		Status of
Employee Group	Represented	Representatives	Agreement
Atlantic Southeast Pilots	1,491	Air Line Pilots Association International	Amendable February 2018
Atlantic Southeast Flight Attendants	1,031	International Association of Machinists and Aerospace Workers	Amendable
Atlantic Southeast Flight Controllers	36	Transport Workers Union of America	Amendable
Atlantic Southeast Mechanics	364	International Brotherhood of Teamsters	Amendable
Atlantic Southeast Stock Clerks	73	International Brotherhood of Teamsters	Amendable
ExpressJet Delaware Pilots	2,107	Air Line Pilots Association International	Amendable February 2018
ExpressJet Delaware Flight Attendants	993	International Association of Machinists and Aerospace Workers	Amendable
ExpressJet Delaware Mechanics	711	International Brotherhood of Teamsters	Amendable
ExpressJet Delaware Dispatchers	53	Transport Workers Union of America	Amendable
ExpressJet Delaware Stock Clerks	96	International Brotherhood of Teamsters	Amendable

In February 2016, the Atlantic Southwest Pilots and the ExpressJet Delaware Pilots ratified a two-year contract extension to their respective labor agreements.  Delays or expenses or other challenges associated with executing an acceptable agreement with each labor workgroup with an amendable contract could impact our financial performance.

As of December 31, 2015, SkyWest and SkyWest Airlines collectively employed 10,411 full‑time equivalent employees, consisting of 3,676 pilots, 2,703 flight attendants, 1,742 customer service personnel, 872 mechanics, 729 other maintenance personnel, 134 dispatchers and 555 operational support and administrative personnel. None of these employees are currently represented by a union. Collective bargaining group organization efforts among SkyWest Airlines’ employees do, however, occur from time to time and we anticipate that such efforts will continue in the future. If unionization efforts are successful, we may be subjected to risks of work interruption or stoppage and/or incur additional expenses associated with increased union representation of our employees. Neither SkyWest nor SkyWest Airlines has ever experienced a work stoppage due to a strike or other labor dispute, and we consider SkyWest Airlines’ relationships with its employees to be good.

Government Regulation

All interstate air carriers, including SkyWest Airlines and ExpressJet, are subject to regulation by the U.S. Department of Transportation (the “DOT”), the FAA and other governmental agencies. Regulations promulgated by the DOT primarily relate to economic aspects of air service. The FAA requires operating, air worthiness and other certificates; approval of personnel who may engage in flight, maintenance or operating activities; record‑keeping procedures in accordance with FAA requirements; and FAA approval of flight training and retraining programs. Generally, governmental agencies enforce their regulations through, among other methods, certifications, which are necessary for the continued operations of SkyWest Airlines and ExpressJet, and proceedings, which can result in civil or criminal penalties or revocation of operating authority. The FAA can also issue maintenance directives and other mandatory orders relating to, among other things, grounding of aircraft, inspection of aircraft, installation of new safety‑related items and the mandatory removal and replacement of aircraft parts.

We believe SkyWest Airlines and ExpressJet are in compliance in all material respects with FAA regulations and hold all operating and airworthiness certificates and licenses which are necessary to conduct their respective operations. We incur substantial costs in maintaining current certifications and otherwise complying with the laws, rules and regulations to which SkyWest Airlines and ExpressJet are subject. SkyWest Airlines’ and ExpressJet’s flight

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operations, maintenance programs, record keeping and training programs are conducted under FAA approved procedures. All air carriers operating in the United States of America are required to comply with federal laws and regulations pertaining to noise abatement and engine emissions. All such air carriers are also subject to certain provisions of the Federal Communications Act of 1934, as amended, because of their extensive use of radio and other communication facilities. SkyWest Airlines and ExpressJet are also subject to certain federal and state laws relating to protection of the environment, labor relations and equal employment opportunity. We believe SkyWest Airlines and ExpressJet are in compliance in all material respects with these laws and regulations.

Environmental Matters

SkyWest, SkyWest Airlines and ExpressJet are subject to various federal, state, local and foreign laws and regulations relating to environmental protection matters. These laws and regulations govern such matters as environmental reporting, storage and disposal of materials and chemicals and aircraft noise. We are, and expect in the future to be, involved in various environmental matters and conditions at, or related to, our properties. We are not currently subject to any environmental cleanup orders or actions imposed by regulatory authorities. We are not aware of any active material environmental investigations related to our assets or properties.

Safety and Security

We are committed to the safety and security of our passengers and employees. Since the September 11, 2001 terrorist attacks, SkyWest Airlines and ExpressJet have taken many steps, both voluntarily and as mandated by governmental authorities, to increase the safety and security of their operations. Some of the safety and security measures we have taken with our code‑share partners include: aircraft security and surveillance, positive bag matching procedures, enhanced passenger and baggage screening and search procedures, and securing of cockpit doors. We are committed to complying with future safety and security requirements.

Insurance

SkyWest, SkyWest Airlines and ExpressJet maintain insurance policies we believe are of types customary in the industry and in amounts we believe are adequate to protect against material loss. These policies principally provide coverage for public liability, passenger liability, baggage and cargo liability, property damage, including coverage for loss or damage to our flight equipment, and workers’ compensation insurance. We cannot assure, however, that the amount of insurance we carry will be sufficient to protect us from material loss.

Seasonality

Our results of operations for any interim period are not necessarily indicative of those for the entire year, in part because the airline industry is subject to seasonal fluctuations and changes in general economic conditions. Our operations are somewhat favorably affected by pleasure travel on our pro‑rate routes, historically contributing to increased travel in the summer months, and are unfavorably affected by decreased business travel during the months from November through January and by inclement weather which can result in cancelled flights, principally during the winter months. Additionally, a significant portion of our fixed‑fee arrangements is based on completing flights. We generally experience a significantly higher number of weather cancellations during the winter months, which negatively impacts our revenue during such months.

ITEM 1A.  RISK FACTORS

In addition to factors discussed elsewhere in this Report, the following are important risks which could adversely affect our future results. Additional risks and uncertainties not presently known to us or that we currently do not deem material may also impair our business operations. If any of the risks we describe below occur, or if any unforeseen risk develops, our operating results may suffer, our financial condition may deteriorate, the trading price of our common stock may decline and investors could lose all or part of their investment in us.

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Risks Related to Our Operations

The supply of pilots to the airline industry is limited and may negatively affect our operations and financial condition.

On July 8, 2013, as directed by the U.S. Congress, the FAA issued more stringent pilot qualification and crew member flight training standards, which increase the required training time for new commercial pilots. In recent years, we have also experienced a reduction in pilot applicants with previous military experience. With these changes, the supply of qualified pilot candidates eligible for hiring by the airline industry has been dramatically reduced. Additionally, major airlines may significantly increase the number of pilots hired from regional carriers due to the number of pilots at the major airlines reaching the statutory mandatory retirement age of 65 years.  These factors may cause our pilot attrition rates to be higher than our ability to hire and retain replacement pilots.  If we are unable to maintain a sufficient number of eligible pilots to operate our scheduled flights, we may need to request a reduced flight schedule with our major airline partners, which may result in operational performance penalties under our flying contracts with those partners and our operations and financial results could be materially and adversely affected.

Additionally, our projected number of available pilots and attrition rates may impact our fleet planning decisions.  If actual pilot availability or our actual pilot attrition rates are materially different than our projections, our operations and financial results could be materially and adversely affected.Ashortage of qualified pilots to conduct our operations may cause us to underutilize our aircraft and would negatively impact our operations and financial condition.

We have aircraft lease and debt commitments that extend beyond our existing fixed‑fee contractual term on certain aircraft.

Under our fixed‑fee arrangements with multiple major partners we have a total of 20 CRJ700s with flying contract expirations in 2016. Our underlying lease or debt financing obligations associated with each of these aircraft are scheduled to terminate between 2018 and 2024 on an aircraft‑by‑aircraft basis. We may not be successful in extending the flying contract term on these aircraft with our major partner at acceptable economic terms. In the event we are unsuccessful in extending the flying contract terms on these aircraft, we intend to pursue alternative uses for the aircraft over the remaining aircraft financing term including, but not limited to, operating the aircraft with another major carrier under a negotiated code‑share agreement, subleasing the aircraft to another operator, and/or marketing the debt financed aircraft for sale. Additionally, we may negotiate an early lease return agreement with the aircraft lessor.  In the event we are unable to extend the flying contract terms for these aircraft at each respective contract’s expiration, we may incur cash and non-cash early lease termination costs that would negatively impact our operations and financial condition.  Additionally, in the event we are unable to extend a flying contract with an existing major airline partner, but reach an agreement to place the aircraft into service with a different major airline partner, we likely will incur inefficiencies and incremental costs, such as changing the aircraft livery, during the transition period, which would negatively impact our financial results.

Increased labor costs, strikes, labor disputes and increased unionization of our workforces may adversely affect our ability to conduct our business and reduce our profitability.

Our business is labor intensive, requiring large numbers of pilots, flight attendants, mechanics and other personnel. Labor costs constitute a significant percentage of our total operating costs. For example, during the year ended December 31, 2015, our salary, wage and benefit costs constituted approximately 42.1% of our total operating costs. Increases in our labor costs could result in a material reduction in our earnings. Any new collective bargaining agreements entered into by other regional carriers with their work forces may also result in higher industry wages and increased pressure on us to increase the wages and benefits of our employees. Future agreements with unionized and non‑unionized employees may be on terms that are not as attractive as our current agreements or comparable to agreements entered into by our competitors.

Approximately 38.0% of our workforce is unionized. Strikes or labor disputes with our unionized employees may adversely affect our ability to conduct business. Relations between air carriers and labor unions in the U.S. are governed by the RLA, which provides that a collective bargaining agreement between an airline and a labor union does not expire, but instead becomes amendable as of a stated date. The RLA generally prohibits strikes or other types of

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self‑help action both before and after a collective bargaining agreement becomes amendable, unless and until the collective bargaining processes required by the RLA have been exhausted.

SkyWest Airlines’ employees are not currently represented by any union; however, collective bargaining group organization efforts among those employees occur from time to time. Such efforts will likely continue in the future and may ultimately result in some or all of SkyWest Airlines’ employees being represented by one or more unions. Moreover, one or more unions representing ExpressJet employees may seek a single carrier determination by the National Mediation Board, which could require SkyWest Airlines to recognize such union or unions as the certified bargaining representative of SkyWest Airlines’ employees. One or more unions representing ExpressJet employees may also assert that SkyWest Airlines’ employees should be subject to ExpressJet’s collective bargaining agreements. If SkyWest Airlines’ employees were to unionize or be deemed to be represented by one or more unions, negotiations with unions representing SkyWest Airlines’ employees could divert management attention and disrupt operations, which may result in increased operating expenses and may negatively impact our financial results. Moreover, we cannot predict the outcome of any future negotiations relating to union representation or collective bargaining agreements. Agreements reached in collective bargaining may increase our operating expenses and negatively impact our financial results.

There are long‑term risks related to supply and demand of regional aircraft associated with our regional airline services strategy.

Our major airline partners have indicated that their committed supply of regional airline capacity is larger than they desire given current market conditions. Specifically, they have identified a general oversupply of 50‑seat regional jets under contractual commitments with regional airlines. Delta in particular has reduced both the number of 50‑seat regional jets within its network and the number of regional airlines with which it contracts. There are currently more than 100 50‑seat aircraft within the Delta Connection system. In addition to reducing the number of 50‑seat jets under contract, major airlines have reduced the utilization of regional aircraft, thereby reducing the revenue paid to regional airlines under capacity purchase agreements (See the risk factor titled “Reduced utilization levels of our aircraft under our code‑share agreements would adversely impact our financial results” for additional details). This decrease has had, and may continue to have, a negative impact on our regional airline services revenue and financial results.

The amounts we receive under our code‑share agreements may be less than the corresponding costs we incur.

Under our fixed-fee flying contracts with Delta, United, American and Alaska, a portion of our compensation is based upon pre‑determined rates typically applied to production statistics (such as departures, block hours, flight hours and number of aircraft in service each month). The primary operating costs intended to be compensated by the pre-determined rates include labor costs, including crew training costs, certain aircraft maintenance expenses, and overhead costs.  During the year ended December 31, 2015, approximately 84% of our code‑share operating costs were reimbursable at pre‑determined rates and 16% of our code‑share operating costs were pass‑through costs.  Additionally, our aircraft maintenance costs may increase annually as our fleet ages at a higher rate than our pre-determined rates allow.  If our operating costs for labor, aircraft maintenance and overhead costs exceed the compensation earned from our pre‑determined rates under our fixed‑fee arrangements, our financial position and operating results will be negatively affected.

The Airline Safety and Pilot Training Improvement Act of 2009 could negatively affect our operations and our financial condition.

The Airline Safety and Pilot Training Improvement Act of 2009 (the “Improvement Act”) became effective in August 2013. The Improvement Act added new certification requirements for entry‑level commercial pilots, requires additional emergency training for airline personnel, improves availability of pilot records and mandates stricter rules to minimize pilot fatigue.

The Improvement Act also:

· Requires that all airline pilots obtain an Airline Transport Pilot license, which was previously only required for captains.

· Obligates the FAA to maintain a database of pilot records, including records to be provided by airlines and other sources, so that airlines will have access to more information before they hire pilots.

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· Requires the FAA to issue new regulations governing the airlines’ obligations to submit pilot records and the requirements for airlines to obtain access for information in the database before the database portion of the Improvement Act becomes effective.

· Directs the FAA to rewrite the rules for how long pilots are allowed to work and how much rest they must have before working.

The Improvement Act (and associated regulations) has increased our compliance and FAA reporting obligations, has had a negative effect on pilot scheduling, work hours and the number of pilots required to be employed for our operations or other aspects of our operations, and may continue to negatively impact our operations and financial condition.

We are highly dependent on Delta and United.

As of December 31, 2015, we had 599 aircraft out of our total 660 aircraft available for scheduled service operating under a fixed‑fee arrangement or a revenue‑sharing agreement with either Delta or United. If our code‑share agreements with Delta or United were terminated, we would be significantly impacted and likely would not have an immediate source of revenue or earnings to offset such loss. A termination of either of these agreements would likely have a material adverse effect on our financial condition, operating revenues and net income unless we are able to enter into satisfactory substitute arrangements for the utilization of the affected aircraft by other code‑share partners, or, alternatively, obtain the airport facilities and gates and make the other arrangements necessary to fly as an independent airline. We may not be able to enter into substitute code‑share arrangements, and any such arrangements we might secure may not be as favorable to us as our current agreements. Operating our airlines independent from major partners would be a significant departure from our business plan, would likely be very difficult and would likely require significant time and resources, which may not be available to us at that point.

The SkyWest Airlines and ExpressJet Delta Connection Agreements are subject to certain early termination provisions. Delta’s termination rights include cross‑termination rights (meaning that a breach by either of SkyWest Airlines or ExpressJet of its Delta Connection Agreement could, under certain circumstances, permit Delta to terminate any or all of the Delta Connection Agreements to which we or either of our operating subsidiaries is a party), the right to terminate each of the agreements upon the occurrence of certain force majeure events (including certain labor‑related events) that prevent SkyWest Airlines or ExpressJet from performance for certain periods and the right to terminate each of the agreements if SkyWest Airlines or ExpressJet, as applicable, fails to maintain competitive base rate costs, subject to certain rights of SkyWest Airlines to take corrective action to reimburse Delta for lost revenues. The current terms of the SkyWest Airlines and ExpressJet United Express Agreements are subject to certain early termination provisions and subsequent renewals. United may terminate the SkyWest Airlines and ExpressJet United Express Agreements due to an uncured breach by SkyWest Airlines or ExpressJet of certain operational or performance provisions, including measures and standards related to flight completions, baggage handling and on‑time arrivals. The current terms of the United CPA are subject to certain early termination provisions and subsequent renewals. United may terminate the United CPA due to an uncured breach by ExpressJet of certain operational and performance provisions, including measures and standards related to flight completions and on‑time arrivals.

We currently use the systems, facilities and services of Delta and United to support a significant portion of our operations, including airport and terminal facilities and operations, information technology support, ticketing and reservations, scheduling, dispatching, fuel purchasing and ground handling services. If Delta or United were to cease to maintain any of these systems, close any of these facilities or no longer provide these services to us, due to termination of one of our code‑share agreements, a strike or other labor interruption by Delta or United personnel or for any other reason, we may not be able to obtain alternative systems, facilities or services on terms and conditions as favorable as those we currently receive, or at all. Since our revenues and operating profits are dependent on our level of flight operations, we could then be forced to significantly reduce our operations. Furthermore, upon certain terminations of our code‑share agreements, Delta and United could require us to sell or assign to them facilities and assets, including maintenance facilities, we use in connection with the code‑share services we provide. As a result, in order to offer airline service after termination of any of our code‑share agreements, we may have to replace these facilities, assets and services. We may be unable to arrange such replacements on satisfactory terms, or at all.

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Disagreements regarding the interpretation of our code‑share agreements with our major partners could have an adverse effect on our operating results and financial condition.

Long‑term contractual agreements, such as our code‑share agreements, are subject to interpretation and disputes may arise under such agreements if the parties to an agreement apply different interpretations to that agreement. Those disputes may divert management time and resources from the core operation of the business, and may result in litigation, arbitration or other forms of dispute resolution.

In recent years we have experienced disagreements with our major partners regarding the interpretation of various provisions of our code‑share agreements. Some of those disagreements have resulted in litigation, and we may be subject to additional disputes and litigation in the future. Those disagreements have also required a significant amount of management time, financial resources and settlement negotiations of disputed matters.

To the extent that we continue to experience disagreements regarding the interpretation of our code‑share or other agreements, we will likely expend valuable management time and financial resources in our efforts to resolve those disagreements. Those disagreements may result in litigation, arbitration, settlement negotiations or other proceedings. Furthermore, there can be no assurance that any or all of those proceedings, if commenced, would be resolved in our favor. An unfavorable result in any such proceeding could have adverse financial consequences or require us to modify our operations. Such disagreements and their consequences could have an adverse effect on our operating results and financial condition.

We may be limited from expanding our flying within the Delta and United flight systems.

Additional growth opportunities within the Delta and United flight systems are limited by various factors including a limited number of regional aircraft each major partner can operate in its regional network due to its own labor agreements. Except as contemplated by our existing code‑share agreements, we cannot assure that Delta and United will contract with us to fly any additional aircraft. We may not receive additional growth opportunities, or may agree to modifications to our code‑share agreements that reduce certain benefits to us in order to obtain additional aircraft, or for other reasons. Given the competitive nature of the airline industry, we believe that some of our competitors may be more inclined to accept reduced margins and less favorable contract terms in order to secure new or additional code‑share operations. Even if we are offered growth opportunities by our major partners, those opportunities may involve economic terms or financing commitments that are unacceptable to us. Additionally, our major partners may reduce the number of regional jets in their system by not renewing or extending existing flying arrangements with regional operators. Any one or more of these factors may reduce or eliminate our ability to expand our flight operations with our existing code‑share partners. We also cannot provide any assurance that we will be able to obtain the additional ground and maintenance facilities, including gates, and support equipment, to expand our operations. The failure to obtain these facilities and equipment would likely impede our efforts to implement our business strategy and could materially and adversely affect our operating results and our financial condition.

Our business model depends on major airlines, including Delta and United, electing to contract with us instead of operating their own regional jets. Some major airlines own their own regional airlines or operate their own regional jets instead of entering into contracts with regional carriers. We have no guarantee that in the future our code‑share partners will choose to enter into contracts with us instead of operating their own regional jets. Our partners are not prohibited from doing so under our code‑share agreements. A decision by Delta or United to phase out code‑share relationships and instead acquire and operate their own regional jets could have a material adverse effect on our financial condition, results of operations or the price of our common stock.

Reduced utilization levels of our aircraft under our code‑share agreements would adversely impact our financial results.

The majority of our code‑share agreements set forth minimum levels of flight operations which our major partners are required to schedule for our operations and we are required to provide. These minimum flight operating levels are intended to compensate us for reduced operating efficiencies caused by production decreases made by our major partners under our respective code‑share agreements. Historically, our major partners have utilized our flight operations at levels which exceed the minimum levels set forth in our code‑share agreements, however, higher fuel costs

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or other factors may cause our major partners to reduce our utilization levels. If our major partners schedule the utilization of our aircraft below historical levels (including taking into account the stage length and frequency of our scheduled flights), we may not be able to maintain operating efficiencies previously obtained, which would negatively impact our operating results and financial condition. Additionally, our major partners may change routes and frequencies of flights, which can shorten flight trip lengths. Changes in schedules may increase our flight costs, which could exceed the reimbursed rates paid by our major partners. Continued reduced utilization levels of our aircraft or other changes to our schedules under our code‑share agreements would adversely impact our financial results.

We have a significant amount of contractual obligations.

As of December 31, 2015, we had a total of approximately $1.9 billion in total long‑term debt obligations. Substantially all of this long‑term debt was incurred in connection with the acquisition of aircraft and engines. We also have significant long‑term lease obligations primarily relating to our aircraft fleet. These leases are classified as operating leases and therefore are not reflected as liabilities in our consolidated balance sheets. At December 31, 2015, we had 470 aircraft under lease, with remaining terms ranging up to 10 years. Future minimum lease payments due under all long‑term operating leases were approximately $1.2 billion at December 31, 2015. At a 4.89% discount factor, the present value of these lease obligations was equal to approximately $1.0 billion at December 31, 2015. Our high level of fixed obligations could impact our ability to obtain additional financing to support additional expansion plans or divert cash flows from operations and expansion plans to service the fixed obligations.

Our anticipated fleet replacement would require a significant increase in our leverage and the related cash requirements.

We currently have 237 CRJ200s with an average life of 13.7 years and182 ERJ145s with an average life of 13.0 years. We removed all of our EMB120s from service during the second quarter of 2015, and we anticipate that over the next several years, we will continue to replace the CRJ200s and ERJ145s with larger regional jets. Our fleet replacement strategy, if undertaken as we currently anticipate, will require significant amounts of capital to acquire these larger regional jets.

There can be no assurance that our operations will generate sufficient cash flow or liquidity to enable us to obtain the necessary aircraft acquisition financing to replace our current fleet, or to make required debt service payments related to our existing or anticipated future obligations. Even if we meet all required debt, lease and purchase obligations, the size of these long‑term obligations could negatively affect our financial condition, results of operations and the price of our common stock in many ways, including:

· increasing the cost, or limiting the availability of, additional financing for working capital, acquisitions or other purposes;

· limiting the ways in which we can use our cash flow, much of which may have to be used to satisfy debt and lease obligations; and

· adversely affecting our ability to respond to changing business or economic conditions or continue our growth strategy.

If we need additional capital and cannot obtain such capital on acceptable terms, or at all, we may be unable to realize our fleet replacement plans or take advantage of unanticipated opportunities

We could be adversely affected by an outbreak of a disease that affects travel behavior.

In recent years, various virus and illness outbreaks, including, but not limited to Zika, Ebola, H1N1 flu virus and SARS, have an adverse impact on travel behavior. Any outbreak of a disease or spread of existing illnesses that affects travel behavior could have a material adverse impact on our operating results and financial condition. In addition, outbreaks of disease could result in quarantines of our personnel or an inability to access facilities or our aircraft, which could adversely affect our operations and financial condition.

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Interruptions or disruptions in service at one of our hub airports, due to adverse weather or for any other reason, could have a material adverse impact on our operations.

We currently operate primarily through hubs in Atlanta, Los Angeles, Houston, Minneapolis, Detroit, San Francisco, Salt Lake City, Chicago, Denver, Houston, Washington, D.C., Newark, Cleveland and the Pacific Northwest. Nearly all of our flights either originate from or fly into one of these hubs. Our revenues depend primarily on our completion of flights and secondarily on service factors such as timeliness of departure and arrival. Any interruptions or disruptions could, therefore, severely and adversely affect us. Extreme weather can cause flight disruptions, and, during periods of storms or adverse weather, fog, low temperatures, etc., our flights may be canceled or significantly delayed. Hurricanes Katrina and Rita and Superstorm Sandy, in particular, caused severe disruption to air travel in the affected areas and adversely affected airlines operating in the region, including ExpressJet. We operate a significant number of flights to and from airports with particular weather difficulties, including Atlanta, Salt Lake City, Chicago, San Francisco, Newark and Denver. A significant interruption or disruption in service at one of our hubs, due to adverse weather, security closures or otherwise, could result in the cancellation or delay of a significant portion of our flights and, as a result, could have a severe adverse impact on our operations and financial performance.

Economic and industry conditions constantly change, and negative economic conditions in the United States and other countries may create challenges for us that could materially and adversely affect our operations and financial condition.

Our operations and financial condition are affected by many changing economic and other conditions beyond our control, including, among others:

· disruptions in the credit markets, which have resulted in greater volatility, less liquidity, widening of credit spreads, and decreased availability of financing;

· actual or potential changes in international, national, regional and local economic, business and financial conditions, including recession, inflation, higher interest rates, wars, terrorist attacks or political instability;

· changes in consumer preferences, perceptions, spending patterns or demographic trends;

· changes in the competitive environment due to industry consolidation and other factors;

· actual or potential disruptions to U.S. air traffic control systems;

· price of jet fuel and oil;

· outbreaks of diseases that affect travel behavior; and

· weather and natural disasters.

The effect of any, or some combination, of the foregoing economic and industry conditions on our operations or financial condition is virtually impossible to forecast; however, the occurrence of any or all of such conditions in a significant manner could materially and adversely affect our operations and financial condition.

We could be adversely affected by significant disruptions in the supply of fuel or by significant fluctuation in fuel prices.

Dependence on foreign imports of crude oil, limited refining capacity and the possibility of changes in government policy on jet fuel production, transportation and marketing make it impossible to predict the future availability of jet fuel. If there are additional outbreaks of hostilities or other conflicts in oil‑producing areas or elsewhere, or a reduction in refining capacity (due to weather events, for example), or governmental limits on the production or sale of jet fuel, there could be a reduction in the supply of jet fuel and significant increases in the cost of jet

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fuel. Major reductions in the availability of jet fuel or significant increases in its cost, or a continuation of high fuel prices for a significant period of time, would have a material adverse impact on us.

Pursuant to our fixed‑fee arrangements, our major partners have agreed to bear the economic risk of fuel price fluctuations on our contracted flights. However, we bear the economic risk of fuel price fluctuations on our pro‑rate operations. As of December 31, 2015, we operated 26 CRJ200s under a pro‑rate agreement with United. We also operated21 CRJ200s under a pro‑rate agreement with Delta, and eight CRJ200s under a pro‑rate agreement with American. Our operating and financial results with respect to these pro‑rate arrangements can be negatively affected by the price of jet fuel in the event we are unable to increase our passenger fares. Additionally in the event of prolonged low fuel prices, our competitors may lower their passenger ticket prices on routes that compete with our pro-rate markets, which could negatively impact our passenger load factors.

The issuance of operating restrictions applicable to one of the fleet types we operate could negatively impact our business and financial condition.

We rely on a limited number of aircraft types, and are dependent upon Bombardier and Embraer as the sole manufacturers of our aircraft.  The issuance of FAA or manufacturer directives restricting or prohibiting the use of Bombardier or Embraer aircraft types we operate could negatively impact our business and financial results.  We are also dependent upon General Electric and Rolls Royce as the sole manufacturers of our aircraft engines.  Our operations could be materially and adversely affected by the failure or inability of Bombardier, Embraer, General Electric or Rolls Royce to provide sufficient parts or related maintenance and support services to us on a timely manner, or the interruption of our flight operations as a result of unscheduled or unanticipated maintenance requirements for our aircraft or engines.

Certain flying arrangements with our major partners are terminable upon notice of 120 days or less.

Certain of our flying agreements with our major partners permit the major partner to terminate the agreement in its discretion by giving us notice of 120 days or less.  If one of our major partners elects to terminate a flying agreement with notice of 120 days or less, our ability to use the aircraft under an alternative agreement with similar economics may be limited, which could negatively impact our financial results.  Additionally, even if we can subsequently place the aircraft into service with a different major airline partner, of which there can be no assurance, we likely would incur inefficiencies and incremental costs, such as changing the aircraft livery, during the transition period, which would negatively impact our financial results.

If we have a failure in our technology or if we have security breaches of our information technology infrastructure, our business and financial condition may be adversely affected.

The performance and reliability of our technology are critical to our ability to compete effectively. Any internal technological error or failure or large‑scale external interruption in the technological infrastructure we depend on, such as power, telecommunications or the internet, may disrupt our internal network. Any individual, sustained or repeated failure of technology could impact our ability to conduct our business and result in increased costs. Our technological systems and related data may be vulnerable to a variety of sources of interruption due to events beyond our control, including natural disasters, terrorist attacks, telecommunications failures, computer viruses, hackers and other security issues.

In addition, as a part of our ordinary business operations, we collect and store sensitive data, including personal information of our passengers and employees and information of our business partners. Our information systems are subject to an increasing threat of continually evolving cybersecurity risks. Unauthorized parties may attempt to gain access to our systems or information through fraud or other means of deception. The methods used to obtain unauthorized access, disable or degrade service or sabotage systems are constantly evolving, and may be difficult to anticipate or to detect for long periods of time. We may not be able to prevent all data security breaches or misuse of data. The compromise of our technology systems resulting in the loss, disclosure, misappropriation of, or access to, customers’, employees’ or business partners’ information could result in legal claims or proceedings, liability or regulatory penalties under laws protecting the privacy of personal information, disruption to our operations and damage to our reputation, any or all of which could adversely affect our business and financial condition.

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Our business could be harmed if we lose the services of our key personnel.

Our business depends upon the efforts of our chief executive officer, Russell A. Childs, and our other key management and operating personnel. We may have difficulty replacing management or other key personnel who cease to be employed by us and, therefore, the loss of the services of any of these individuals could harm our business. We do not maintain key‑person insurance on any of our executive officers.

Risks Related to the Airline Industry

We may be materially affected by uncertainties in the airline industry.

The airline industry has experienced tremendous challenges in recent years and will likely remain volatile for the foreseeable future. Among other factors, the financial challenges faced by major and regional carriers and continuing hostilities in the Middle East and other regions have significantly affected, and are likely to continue to affect, the U.S. airline industry. These events have resulted in declines and shifts in passenger demand, increased insurance costs, increased government regulations and tightened credit markets, all of which have affected, and will likely continue to affect, the operations and financial condition of participants in the industry, including us, major carriers (including our major partners), low‑cost carriers, competitors and aircraft manufacturers. These industry developments raise substantial risks and uncertainties, which will likely affect us, major carriers (including our major partners), competitors and aircraft manufacturers in ways that we are unable to predict.

The airline industry is highly competitive and has undergone a period of consolidation and transition leaving fewer potential code‑share partners.

The airline industry is highly competitive. We not only compete with other regional airlines, some of which are owned by or operated as code‑share partners of major airlines, but we also face competition from low‑cost carriers and major airlines on many of our routes. Low‑cost carriers such as Southwest, Allegiant, Spirit and JetBlue among others, operate at many of our hubs, resulting in significant price competition. Additionally, a large number of other carriers operate at our hubs, creating intense competition. Certain of our competitors are larger and have significantly greater financial and other resources than we do. Moreover, federal deregulation of the industry allows competitors to rapidly enter our markets and to quickly discount and restructure fares. The airline industry is particularly susceptible to price discounting because airlines incur only nominal costs to provide service to passengers occupying otherwise unsold seats. Increased fare competition could adversely affect our operations and the price of our common stock. The airline industry has undergone substantial consolidation, including the merger between American and US Airways in 2013, Southwest and AirTran Airways, Inc. in 2011, United and Continental in 2010 and Delta and Northwest Airlines, Inc. in 2008. Any additional consolidation or significant alliance activity within the airline industry could limit the number of potential partners with whom we could enter into code‑share relationships and could have a material adverse effect on our relationships with our code‑share partners.

Due, in part, to the dynamic nature of the airline industry, major airlines may also make other strategic changes such as changing or consolidating hub locations. If our major partners were to make changes such as these in their strategy and operations, our operations and financial results could be adversely impacted.

Terrorist activities or warnings have dramatically impacted the airline industry, and will likely continue to do so.

The terrorist attacks of September 11, 2001 and their aftermath have negatively impacted the airline industry in general, including our operations. The primary effects experienced by the airline industry include a substantial loss of passenger traffic and revenue. If additional terrorist attacks are launched against the airline industry, there will be lasting consequences of the attacks, which may include loss of life, property damage, increased security and insurance costs, increased concerns about future terrorist attacks, increased government regulation and airport delays due to heightened security. Additional terrorist attacks and the fear of such attacks could negatively impact the airline industry, and result in further decreased passenger traffic and yields, increased flight delays or cancellations associated with new government mandates, as well as increased security, fuel and other costs. We cannot provide any assurance that these events will not harm the airline industry generally or our operations or financial condition in particular.

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We are subject to significant governmental regulation.

All interstate air carriers, including SkyWest Airlines and ExpressJet, are subject to regulation by the DOT, the FAA and other governmental agencies. Regulations promulgated by the DOT primarily relate to economic aspects of air service. The FAA requires operating, air worthiness and other certificates; approval of personnel who may engage in flight, maintenance or operation activities; record keeping procedures in accordance with FAA requirements; and FAA approval of flight training and retraining programs. We cannot predict whether we will be able to comply with all present and future laws, rules, regulations and certification requirements or that the cost of continued compliance will not have a material adverse effect on our operations. We incur substantial costs in maintaining our current certifications and otherwise complying with the laws, rules and regulations to which we are subject. A decision by the FAA to ground, or require time‑consuming inspections of or maintenance on, all or any of our aircraft for any reason may have a material adverse effect on our operations. In addition to state and federal regulation, airports and municipalities enact rules and regulations that affect our operations. From time to time, various airports throughout the country have considered limiting the use of smaller aircraft, such as our aircraft, at such airports. The imposition of any limits on the use of our aircraft at any airport at which we operate could have a material adverse effect on our operations.

The occurrence of an aviation accident involving our aircraft would negatively impact our operations and financial condition.

An accident or incident involving one of our aircraft could result in significant potential claims of injured passengers and others, as well as repair or replacement of a damaged aircraft and its consequential temporary or permanent loss from service. In the event of an accident, our liability insurance may not be adequate to offset our exposure to potential claims and we may be forced to bear substantial losses from the accident. Substantial claims resulting from an accident in excess of our related insurance coverage would harm our operational and financial results. Moreover, any aircraft accident or incident, even if fully insured, could cause a public perception that our operations are less safe or reliable than other airlines.

Risks Related to Our Common Stock

We can issue additional shares without shareholder approval.

Our Restated Articles of Incorporation, as amended (the “Restated Articles”), authorize the issuance of up to 120,000,000 shares of common stock, all of which may be issued without any action or approval by our shareholders. As of December 31, 2015, we had 51,004,985 shares outstanding. In addition, as of December 31, 2015, we had equity‑based incentive plans under which 4,259,137 shares are reserved for issuance and an employee stock purchase plan under which 1,006,631 shares are reserved for issuance, both of which may dilute the ownership interest of our shareholders. Our Restated Articles also authorize the issuance of up to 5,000,000 shares of preferred stock. Our board of directors has the authority to issue preferred stock with the rights and preferences, and at the price, which it determines. Any shares of preferred stock issued would likely be senior to shares of our common stock in various regards, including dividends, payments upon liquidation and voting. The value of our common stock could be negatively affected by the issuance of any shares of preferred stock.

The amount of dividends we pay may decrease or we may not pay dividends.

Historically, we have paid dividends in varying amounts on our common stock. The future payment and amount of cash dividends will depend upon our financial condition and results of operations, loan covenants and other factors deemed relevant by our board of directors. There can be no assurance that we will continue our practice of paying dividends on our common stock or that we will have the financial resources to pay such dividends.

The amount of common stock we repurchase may decrease from historical levels, or we may not repurchase any additional shares of common stock.

Historically, we have repurchased shares of our common stock in varying amounts. Our future repurchases of shares of common stock, if any, and the number of shares of common stock we may repurchase will depend upon our financial condition, results of operations, loan covenants and other factors deemed relevant by our Board of Directors.

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There can be no assurance that we will continue our practice of repurchasing shares of common stock or that we will have the financial resources to repurchase shares of common stock in the future.

Provisions of our charter documents and code‑share agreements may limit the ability or desire of others to gain control of our company.

Our ability to issue shares of preferred and common stock without shareholder approval may have the effect of delaying or preventing a change in control and may adversely affect the voting and other rights of the holders of our common stock, even in circumstances where such a change in control would be viewed as desirable by most investors. The provisions of the Utah Control Shares Acquisitions Act may also discourage the acquisition of a significant interest in or control of our company. Additionally, our code‑share agreements contain termination and extension trigger provisions related to change in control type transactions that may have the effect of deterring a change in control of our company.

ITEM 1B.  UNRESOLVED STAFF COMMENTS

None

ITEM 2.  PROPERTIES

Flight Equipment

As of December 31, 2015, our fleet available for scheduled service consisted of the following types of owned and leased aircraft:

	Number of	Number of		Scheduled	Average
	Owned	Leased	Passenger	Flight	Cruising	Average
Aircraft Type	Aircraft	Aircraft	Capacity	Range (miles)	Speed (mph)	Age (years)
CRJ900s	11	53	76	1,500	530	8.1
CRJ700s	70	69	66-70	1,600	530	10.6
CRJ200s	92	133	50	1,500	530	13.8
E175s	45	—	76	2,100	530	1.0
ERJ145s	—	182	50	1,500	530	13.0
ERJ135s	—	5	37	1,500	530	14.6

The following table outlines the anticipated delivery scheduled for new E175 aircraft during the years indicated.

	2016	2017
E175s	37	17

The following table outlines the currently anticipated size and composition of our combined fleet for the periods indicated based on anticipated contract expirations. Several factors may impact our forecasted fleet size including

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assumptions regarding contract extensions with our major airline partners.  Our actual future fleet size will likely vary, and may vary materially, from our current forecast.

	As of December 31,
Aircraft Type Anticipated Fleet Size	2015	2016	2017	2018
CRJ900s	64	64	64	64
CRJ700s	139	119	119	119
CRJ200s	225	208	175	175
E175s	45	82	99	99
ERJ145s	182	153	97	—
ERJ135s	5	5	3	—
Total Fleet Size	660	631	557	457

Bombardier and Embraer Regional Jets

The Bombardier and Embraer Regional Jets are among the quietest commercial jets currently available and offer many of the amenities of larger commercial jet aircraft, including flight attendant service, as well as a stand‑up cabin, overhead and under seat storage, lavatories and in‑flight snack and beverage service. The speed of Bombardier and Embraer Regional Jets is comparable to larger aircraft operated by the major airlines, and they have a range of approximately 1,600 miles (2,100 miles for the E175 aircraft); however, because of their smaller size and efficient design, the per‑flight cost of operating a Bombardier or Embraer Regional Jet is generally less than that of a 120‑ seat or larger jet aircraft.

Ground Facilities

SkyWest, SkyWest Airlines and ExpressJet own or lease the following principal properties:

SkyWest Facilities

· We own the corporate headquarters facilities of SkyWest and SkyWest Airlines, located in St. George, Utah, which consist of two adjacent buildings of 63,000 and 55,000 square feet, respectively.

SkyWest Airlines Facilities

· SkyWest Airlines leases a 221,000 square foot facility at the Salt Lake International Airport. This facility consists of a 98,000 square‑ foot aircraft maintenance hangar and a 123,000 square‑foot training and office facility. SkyWest Airlines is leasing the facility from the Salt lake City Department of Airports under a lease that expires in 2028.

· SkyWest Airlines leases a 94,000 square‑foot hangar and a 32,000 square‑foot office facility in Boise, Idaho.

· SkyWest Airlines leases a 90,000 square‑foot maintenance hangar and a 15,000 square‑foot office facility in Fresno, California.

· SkyWest Airlines leases a 70,000 square‑foot maintenance hangar in Tucson, Arizona.

· SkyWest Airlines owns a 57,000 square‑foot maintenance facility and an 18,000 square‑foot office facility in Chicago, Illinois. The City of Chicago possesses the right to acquire ownership rights of the facility in 2017.

· SkyWest Airlines owns a 57,000 square foot aircraft maintenance facility in Palm Springs, California.

· SkyWest Airlines owns a 55,000 square‑foot hangar and a 46,000 square‑foot office facility in Colorado Springs, Colorado.

· SkyWest Airlines owns a 55,000 square‑foot maintenance accessory shop (which includes 5,000 square‑foot office space) and a 5,000 square‑ foot training facility in Salt Lake City, Utah.

· SkyWest Airlines leases a 42,000 square‑foot maintenance hangar facility in South Bend, Indiana.

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· SkyWest Airlines leases a 41,000 square‑foot hangar and office facility in Milwaukee, Wisconsin.

· SkyWest Airlines leases a 32,000 square‑foot hangar and office facility in Nashville, Tennessee.

ExpressJet Facilities

· ExpressJet leases an aircraft hangar complex consisting of 203,000 square feet of building space at the Hartsfield‑Jackson Atlanta Airport. The complex also contains a 15,000 square‑foot ground service equipment facility. The 203,000 square‑foot building space consists of a 114,000 square foot aircraft maintenance hangar, 18,000 square‑foot training facility, and 71,000 square feet of renovated office space which is utilized to support various operating divisions and ExpressJet’s Operational Control Center. The lease agreement for the aircraft hangar complex has a 25‑year term and is scheduled to expire on April 30, 2033.

· ExpressJet leases a 20,000 square‑foot facility at the Hartsfield‑ Jackson Atlanta International Airport which serves as ExpressJet’s corporate headquarters. The lease agreement for this facility has a seven‑year term and is scheduled to expire on July 31, 2018.

· ExpressJet leases a group of warehouse units for the purpose of parts storage in College Park, Georgia. The 17,000 square feet of warehouse space is leased on a month‑to‑month basis.

· ExpressJet leases 24 gates and other premises of the Central Passenger Terminal Complex located on Concourse C and Concourse D at Hartsfield‑Jackson Atlanta International Airport. The lease agreement is scheduled to expire on September, 20, 2017.

· ExpressJet leases a 380,000 square‑foot hangar and office support facility in Houston, Texas. The lease agreement is currently month to month.

· ExpressJet leases a 152,000 square‑foot hangar, and a 29,000 square‑foot shop facility in Shreveport, Louisiana. The lease agreement is scheduled to expire on May 31, 2020.

· ExpressJet subleases a 91,000 square‑foot aircraft maintenance facility in Cleveland, Ohio. The lease agreement is scheduled to expire on January 30, 2020.

· ExpressJet leases an 83,000 square‑foot hangar, and a 25,000 square‑foot shop facility in Knoxville, Tennessee. The lease agreement for the hangar facility is scheduled to expire on November 30, 2020, and the lease for the shop facility is scheduled to expire on October 31, 2017.

· ExpressJet leases an aircraft hangar complex located at the Middle Georgia Regional Airport. The complex includes a 77,000 square‑foot aircraft hangar facility and 41,000 square feet of training and office space. The lease agreement has a sixteen‑year term and is scheduled to expire on April 1, 2018. ExpressJet has subleased the hangar complex to an unrelated aircraft maintenance provider; however ExpressJet remains obligated for payment and other obligations of the lease under the lease agreement.

· ExpressJet leases a 68,000 square‑foot facility in Houston, Texas. ExpressJet has subleased the building to an unrelated aircraft maintenance provider; however ExpressJet remains obligated for payment and other obligations under the lease agreement which is scheduled to expire on March 31, 2017.

· ExpressJet leases a 57,000 square‑foot training center and support space in Houston, Texas. The lease agreement is scheduled to expire on December 31, 2027.

· ExpressJet leases a 35,000 square‑foot hangar facility in Columbia, South Carolina. The lease agreement has a five‑year term and is scheduled to expire on June 30, 2018.

· ExpressJet leases a 32,000 square‑foot aircraft maintenance facility in Richmond, Virginia. The lease agreement is scheduled to expire on October 31, 2016.

· ExpressJet leases an aircraft hangar complex located at the Baton Rouge Metropolitan Airport District. The complex includes a 27,000 square‑foot hangar facility and 12,000 square feet of office support space. ExpressJet has the right to occupy the Baton Rouge facility rent‑free until 2018.

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· ExpressJet subleases 12,000 square‑feet of hangar space in Detroit, Michigan. The term of the sublease agreement is scheduled to expire on March 5, 2016.

Our management deems the current facilities of SkyWest, SkyWest Airlines and ExpressJet as being suitable to support existing operations and believes these facilities will be adequate for the foreseeable future.

ITEM 3.  LEGAL PROCEEDINGS

We are subject to certain legal actions which we consider routine to our business activities. As of December 31, 2015, our management believed, after consultation with legal counsel, that the ultimate outcome of such legal matters was not likely to have a material adverse effect on our financial position, liquidity or results of operations.

ITEM 4.  MINE SAFETY DISCLOSURES

The disclosure required by this item is not applicable.

PART II

ITEM 5.  MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

Market Price for Our Common Stock

Our common stock is traded on The Nasdaq Global Select Market under the symbol “SKYW.” At February 16, 2016, there were approximately 843 stockholders of record of our common stock. Securities held of record do not include shares held in securities position listings. The following table sets forth the range of high and low closing sales prices for our common stock, during the periods indicated.

	2015				2014
Quarter	High		Low		High		Low
First	$	15.86	$	11.96	$	14.98	$	11.77
Second		16.91		13.58		13.72		11.21
Third		17.90		13.91		12.66		7.78
Fourth		21.26		16.55		13.28		7.07

The transfer agent for our common stock is Zions First National Bank, Salt Lake City, Utah.

Dividends

During 2015 and 2014, our Board of Directors declared regular quarterly dividends of $0.04 per share.

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Securities Authorized for Issuance Under Equity Compensation Plans

The following table contains information regarding our equity compensation plans as of December 31, 2015.

				Number of Securities
		Weighted-Average		Remaining Available for
		Exercise Price of		Future Issuance under
	Number of Securities to be	Outstanding		Equity Compensation
	Issued upon Exercise of	Options,		Plans (Excluding
	Outstanding Options,	Warrants and		Securities Reflected in
Plan Category	Warrants and Rights	Rights		the First Column)
Equity compensation plans approved by security holders(1)	1,064,429	$	13.64	5,265,768

(1) Consists of our SkyWest Inc. Long Term Incentive Plan, and our Employee Stock Purchase Plan. See Note 9 to our Consolidated Financial Statements for the fiscal year ended December 31, 2015, included in Item 8 of this Report, for additional information regarding these plans.

Stock Performance Graph

The following Performance Graph and related information shall not be deemed “soliciting material” or “filed” with the Securities and Exchange Commission,(the “Commission”), nor shall such information be incorporated by reference into any future filing under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended (the “Exchange Act”), except to the extent we specifically incorporate it by reference into such filing.

The following graph compares the cumulative total shareholder return on our common stock over the five‑year period ended December 31, 2015, with the cumulative total return during such period of the Nasdaq Stock Market (U.S. Companies), Nasdaq Stock Market Transportation Index and a peer group index composed of regional and major passenger airlines with U.S operations that have equity securities traded on the Nasdaq Stock Market or the New York Stock Exchange, the members of which are identified below (the “Peer Group”) for the same period. The following graph assumes an initial investment of $100.00 with dividends reinvested. The stock performance shown on the graph below represents historical stock performance and is not necessarily indicative of future stock price performance.

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The following graph compares the cumulative total shareholder return on our common stock over the five‑year period ended December 31, 2015, with the cumulative total return during such period of the Nasdaq Stock Market (U.S. Companies), Nasdaq Stock Market Transportation Index and a peer group index composed of regional and major passenger airlines with U.S operations that have equity securities traded on the Nasdaq Stock Market or the New York Stock Exchange, the members of which are identified below (the “Peer Group”) for the same period. The following graph assumes an initial investment of $100.00 with dividends reinvested. The stock performance shown on the graph below represents historical stock performance and is not necessarily indicative of future stock price performance.
	INDEXED RETURNS
	Base
	Period	Years Ending
Company Name / Index	Dec10	Dec11	Dec12	Dec13	Dec14	Dec15
SkyWest, Inc.	100	81.55	81.81	98.48	89.75	129.83
NASDAQ Composite	100	99.17	116.48	163.21	187.27	200.31
NASDAQ Transportation Index	100	90.09	95.46	130.08	181.38	153.54
Peer Group	100	71.22	90.64	169.14	315.67	302.97

The Peer Group consists of regional and major passenger airlines with U.S operations that have equity securities traded on the Nasdaq Stock Market or the New York Stock Exchange. The members of the Peer Group are: Alaska Air Group, Inc.: Allegiant Travel Co.; American Airlines Group, Inc.; Delta Air Lines, Inc.; Hawaiian Holdings, Inc.; JetBlue Airways Corp.; Republic Airways, Holdings Inc.; SkyWest, Inc.; Southwest Airlines Co.; Spirit Airlines Inc.; United Continental Holdings Inc.; and Virgin America, Inc.

ITEM 6.  SELECTED FINANCIAL DATA

The following selected financial and operating data should be read in conjunction with “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” and our consolidated financial statements and related notes included elsewhere in this Report.

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Selected Consolidated Financial Data (amounts in thousands, except per share data):

	Year ended December 31,
	2015			2014			2013			2012			2011
Operating revenues	$	3,095,563		$	3,237,447		$	3,297,725		$	3,534,372		$	3,654,923
Operating income		234,515			24,848			153,111			165,987			41,105
Net income (loss)		117,817			(24,154)			58,956			51,157			(27,335)
Net income (loss) per common share:
Basic	$	2.31		$	(0.47)		$	1.14		$	1.00		$	(0.52)
Diluted	$	2.27		$	(0.47)		$	1.12		$	0.99		$	(0.52)
Weighted average shares:
Basic		51,077			51,237			51,688			51,090			52,201
Diluted		51,825			51,237			52,422			51,746			52,201
Total assets	$	4,802,886		$	4,409,928		$	4,233,219		$	4,254,637		$	4,281,908
Current assets(1)		1,017,570			1,089,501			1,287,568			1,279,163			1,146,559
Current liabilities		751,386			684,355			620,464			591,425			624,148
Long-term debt, net of current maturities		1,676,776			1,533,990			1,293,179			1,470,567			1,606,993
Stockholders’ equity		1,506,435			1,400,346			1,434,939			1,387,175			1,334,261
Return (loss) on average equity(2)		7.8	%		(1.7)	%		4.2	%		3.8	%		(2.0)	%
Cash dividends declared per common share	$	0.16		$	0.16		$	0.16		$	0.16		$	0.16

(1) Certain reclassifications were made to prior year balances.  See Note 1 to our Consolidated Financial Statements presented in Item 8 of this Report.

(2) Calculated by dividing net income (loss) by the average of beginning and ending stockholders’ equity for the year.

Selected Operating Data

	Year ended December 31,
	2015		2014		2013		2012		2011
Block hours	2,074,804		2,275,562		2,380,118		2,297,014		2,250,280
Departures	1,226,897		1,357,454		1,453,601		1,435,512		1,390,523
Passengers carried	56,228,593		58,962,010		60,581,948		58,803,690		55,836,271
Revenue passenger miles (000)	29,671,911		31,499,397		31,834,735		30,088,278		29,109,039
Available seat miles (000)	35,902,503		38,220,150		39,207,910		37,278,554		36,698,859
Revenue per available seat mile	8.6	¢	8.5	¢	8.4	¢	9.5	¢	10.0	¢
Cost per available seat mile	8.2	¢	8.6	¢	8.2	¢	9.2	¢	10.1	¢
Average passenger trip length	528		534		525		512		521
Number of operating aircraft at end of year	660		717		755		738		732

The following terms used in this section and elsewhere in this Report have the meanings indicated below:

“Revenue passenger miles” represents the number of miles flown by revenue passengers.

“Available seat miles” represents the number of seats available for passengers multiplied by the number of miles those seats are flown.

“Revenue per available seat mile” represents passenger revenue divided by available seat miles.

“Cost per available seat mile” represents operating expenses plus interest divided by available seat miles.

“Number of operating aircraft at end of year” excludes aircraft leased to un‑affiliated and affiliated entities.

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ITEM 7.  MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following discussion and analysis presents factors that had a material effect on our results of operations during the years ended December 31, 2015, 2014 and 2013. Also discussed is our financial position as of December 31, 2015 and 2014. You should read this discussion in conjunction with our consolidated financial statements, including the notes thereto, appearing elsewhere in this Report or incorporated herein by reference. This discussion and analysis contains forward‑looking statements. Please refer to the sections of this Report entitled “Cautionary Statement Concerning Forward‑looking Statements” and “Item 1A. Risk Factors” for discussion of some of the uncertainties, risks and assumptions associated with these statements.

Overview

Through SkyWest Airlines and ExpressJet, we operate the largest regional airline in the United States. As of December 31, 2015, SkyWest Airlines and ExpressJet offered scheduled passenger and air freight service with approximately 3,600 total daily departures to destinations in the United States, Canada, Mexico and the Caribbean. As of December 31, 2015, we had a combined fleet of 702 aircraft consisting of the following:

	CRJ200	CRJ700	CRJ900	ERJ135	ERJ145	E175	EMB120	Total
United	83	70	—	5	166	40	—	364
Delta	111	60	64	—	—	—	—	235
American	31	—	—	—	16	—	—	47
Alaska	—	9	—	—	—	5	—	14
Aircraft in scheduled service	225	139	64	5	182	45	—	660
Subleased to an un-affiliated entity	2	—	—	—	—	—	—	2
Other*	10	—	—	4	—	—	26	40
Total	237	139	64	9	182	45	26	702

*Other aircraft consisted of leased aircraft removed from service that were in the process of being returned to the lessor and owned aircraft removed from service that were held for sale.

For the year ended December 31, 2015, approximately 57.5% of our aggregate capacity was operated for United, approximately 33.2% was operated for Delta, approximately 6.4% was operated for American and approximately 2.9% was operated for Alaska.

Under our fixed‑fee arrangements, three components have a significant impact on comparability of revenue and operating expense for the periods presented in this Report. The first item is the reimbursement of fuel expense, which is a directly‑reimbursed expense under all of our fixed‑fee arrangements. If we purchase fuel directly from vendors, our major partners reimburse us for fuel expense incurred under each respective fixed‑fee contract, and we record such reimbursement as passenger revenue. Thus, the price volatility of fuel and the volume of fuel expensed under our fixed‑fee arrangements during a particular period will impact our fuel expense and our passenger revenue during the period equally, with no impact on our operating income. Over the past few years, some of our major airline partners have purchased an increased volume of fuel directly from vendors on flights we operated under our fixed‑fee contracts, which has decreased both revenue and operating expenses compared to previous periods presented in this Report.

The second item is the reimbursement of landing fees and station rents, which is a directly‑reimbursed expense under all of our fixed‑fee arrangements. Our major partners reimburse us for landing fees and station rent expense incurred under each respective fixed‑fee contract, and we record such reimbursement as passenger revenue. Over the past few years, some of our major airline partners have paid an increased volume of landing fees and station rents directly to our vendors on flights we operated under our flying contracts, which has also decreased both revenue and operating expenses compared to previous periods presented in this Report.

The third item is the compensation we receive for engine maintenance under our fixed‑fee arrangements. Under our United CRJ and E175 fixed-fee contracts, American fixed-fee contracts, and Alaska fixed‑fee contracts, a portion of our compensation is based upon fixed hourly rates the aircraft is in operation, which is intended to cover various operating costs, including engine maintenance costs (“Fixed‑Rate Engine Contracts”). Under the compensation structure

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for our Delta Connection and United ERJ145 flying contracts, our major partner reimburses us for engine maintenance expense when the expense is incurred as a pass‑through cost (“Directly‑Reimbursed Engine Contracts”). We use the direct‑expense method of accounting for our CRJ200 regional jet aircraft engine overhaul costs and, accordingly, we recognize engine maintenance expense on our CRJ200 engines on an as‑incurred basis. Under the direct‑expense method, the maintenance liability is recorded when the maintenance services are performed (“CRJ200 Engine Overhaul Expense”).

Because we use the direct‑expense method of accounting for our CRJ200 engine expense, and because we recognize revenue using the applicable fixed hourly rates under our Fixed‑Rate Engine Contracts, the number of engine maintenance events and related expense we incur may vary between reporting periods under the Fixed‑Rate Engine Contracts without a corresponding change to our passenger revenues that may impact the comparability of our operating income for the presented reporting periods.

Because we recognize revenue in the same amount and in the same period when we incur engine maintenance expense on engines operating under our Directly‑ Reimbursed Engine Contracts, the number of engine events and related expense we incur each reporting period does not have a direct impact on the comparability of our operating income for the presented reporting periods.

We have an agreement with a third‑party vendor to provide long‑term engine maintenance covering scheduled and unscheduled repairs for engines on our CRJ700s and E175s operating under our Fixed‑Rate Engine Contracts (a “Power-by-the-Hour Agreement”). Under the terms of the Power-by-the-Hour Agreement, we are obligated to pay a set dollar amount per engine hour flown on a monthly basis and the vendor assumes the obligation to repair the engines at no additional cost to us, subject to certain specified exclusions. Thus, under the Power-by-the-Hour Agreement, we expense the engine maintenance costs as flight hours are incurred on the engines and using the contractual rate set forth in the agreement. Because we record engine maintenance expense based on the fixed hourly rate pursuant to the Power-by-the-Hour Agreement on our CRJ700s and E175s operating under our Fixed‑Rate Engine Contracts, and because we recognize revenue using the applicable fixed hourly rates under our Fixed‑Rate Engine Contracts, the number of engine events and related expense we incur each reporting period does not have a direct impact on the comparability of our operating income for the presented reporting periods. The table below summarizes how we are compensated by our major partners under our flying contracts for engine expense and the method we use to recognize the corresponding expense.

Flying Contract	Compensation of Engine Expense	Expense Recognition
SkyWest Delta Connection	Directly‑Reimbursed Engine Contracts	Direct Expense Method
ExpressJet Delta Connection	Directly‑Reimbursed Engine Contracts	Direct Expense Method
SkyWest United Express (CRJ200)	Fixed‑Rate Engine Contracts	Direct Expense Method
SkyWest United Express (CRJ700)	Fixed‑Rate Engine Contracts	Power-by-the-Hour Agreement
SkyWest United Express (E175)	Fixed‑Rate Engine Contracts	Power-by-the-Hour Agreement
ExpressJet United (CRJ200)	Fixed‑Rate Engine Contracts	Direct Expense Method
ExpressJet United (ERJ145)	Directly‑Reimbursed Engine Contracts	Power-by-the-Hour Agreement
Alaska Agreement (CRJ700)	Fixed‑Rate Engine Contracts	Power-by-the-Hour Agreement
Alaska Agreement (E175)	Fixed‑Rate Engine Contracts	Power-by-the-Hour Agreement
SkyWest American Agreement (CRJ200)	Fixed‑Rate Engine Contracts	Direct Expense Method
ExpressJet American Agreement (CRJ200)	Fixed‑Rate Engine Contracts	Direct Expense Method

Historically, multiple contractual relationships with major airlines have enabled us to reduce our reliance on any single major airline code and to enhance and stabilize operating results through a mix of fixed‑fee flying arrangements and our pro‑rate flying arrangements. For the year ended December 31, 2015, contract flying revenue and pro‑rate revenue represented approximately 88% and 12%, respectively, of our total passenger revenues. On contract routes, the major airline partner controls scheduling, ticketing, pricing and seat inventories and we are compensated by the major airline partner at contracted rates based on completed block hours, flight departures and other operating measures.

Financial Highlights

We had total operating revenues of $3.1 billion for the year ended December 31, 2015, a 4.4% decrease, compared to total operating revenues of $3.2 billion for the year ended December 31, 2014. We had a net income of

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$117.8 million, or $2.27 per diluted share, for the year ended December 31, 2015, compared to a net loss of $24.2 million, or $(0.47) per diluted share, for the year ended December 31, 2014.

The significant items affecting our financial performance during the year ended December 31, 2015 are outlined below:

Revenue

The number of aircraft we have in scheduled service and the number of block hours we generate on our flights are primary drivers to our passenger revenues under our fixed-fee flying agreements.  During 2015, we had a significant change in the number of aircraft operating under fixed-fee agreements. Our primary objective in the fleet change is to improve our profitability by adding new aircraft to fixed-fee agreements at improved economics, including the E175 aircraft, while removing aircraft that were operating under less profitable arrangements.  As summarized under the Fleet Activity Section below, from December 31, 2014 to December 31, 2015, we removed 103 aircraft from service that were operating under less profitable flying contracts and added 46 aircraft to new or existing fixed-fee flying arrangements at improved economics.  The number of aircraft available for scheduled service decreased from 717 aircraft at December 31, 2014 to 660 at December 31, 2015, or by 8.6%.  Our completed block hours decreased 8.8% primarily due to the reduced fleet size during 2015.

The decrease in our total revenue passenger revenues from 2014 to 2015 of 4.4% was primarily attributable to a decrease in revenue earned associated with the reduction to our fleet size of 8.8%, partially offset by higher compensation we earned on aircraft placed into new agreements during 2015 and by an increase in fixed-fee contract performance incentives we earned in 2015 primarily through higher flight completion rates.

Operating Expenses

The decrease in our operating expense from 2014 to 2015 of 10.9% was primarily attributable to a decrease in direct operating costs associated with the reduction to our fleet size of 8.8% and the effect of $74.8 million of special items in our 2014 operating expense(primarily attributable to the accelerated removal of certain aircraft from service).

Fleet Activity

The following table summarizes our fleet activity for the 2015 year:

Aircraft in Service	December 31, 2014	Additions	Removals	December 31, 2015
CRJ200s	242	5	(22)	225
CRJ700s	139	—	—	139
CRJ900s	64	—	—	64
ERJ145/135s	225	16	(54)	187
E175s	20	25	—	45
EMB120s	27	—	(27)	—
Total	717	46	(103)	660

The additional five CRJ200s and 16 ERJ145s are used aircraft we leased from the respective major partner at a nominal amount that were placed into fixed-fee flying contracts during 2015.  The additional 25 E175 aircraft were new aircraft we acquired and placed into fixed-fee flying contracts during 2015.  The 22 CRJ200s, 54 ERJ145s and 27 EMB120s were aircraft removed from scheduled service during 2015, and were either leased aircraft that were returned or in the process of being returned to lessors, owned aircraft that were sold to third parties or owned aircraft that were in process of being sold to third parties.  

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Fleet Developments

As of December 31, 2015, we had 45 E175 aircraft in service.  We have agreements with multiple major partners to place 37 and 17 new E175 aircraft into fixed-fee flying contracts in 2016 and 2017, respectively.

Critical Accounting Policies

Our significant accounting policies are summarized in Note 1 to our consolidated financial statements for the year ended December 31, 2015, included in Item 8 of this Report. Critical accounting policies are those policies that are most important to the preparation of our consolidated financial statements and require management’s subjective and complex judgments due to the need to make estimates about the effect of matters that are inherently uncertain. Our critical accounting policies relate to revenue recognition, aircraft maintenance, aircraft leases, impairment of long‑lived assets and intangibles, stock‑based compensation expense and fair value as discussed below. The application of these accounting policies involves the exercise of judgment and the use of assumptions as to future uncertainties and, as a result, actual results will likely differ, and could differ materially, from such estimates.

Revenue Recognition

Passenger and ground handling revenues are recognized when service is provided. Under our fixed-fee and pro‑rate flying agreements with our code‑share partners, revenue is considered earned when each flight is completed. Our agreements with our code‑share partners contain certain provisions pursuant to which the parties could terminate the respective agreement, subject to certain rights of the other party, if certain performance criteria are not maintained. Our revenues could be impacted by a number of factors, including changes to the applicable code‑share agreements, contract modifications resulting from contract renegotiations and our ability to earn incentive payments contemplated under applicable agreements. In the event contracted rates are not finalized at a quarterly or annual financial statement date, we record that period’s revenues based on the lower of the prior period’s approved rates adjusted for the current contract negotiations and our estimate of rates that will be implemented. Also, in the event we have a reimbursement dispute with a major partner at a quarterly or annual financial statement date, we evaluate the dispute under established revenue recognition criteria and, provided the revenue recognition criteria have been met, we recognize revenue for that period based on our estimate of the resolution of the dispute. Accordingly, we are required to exercise judgment and use assumptions in the application of our revenue recognition policy.

Maintenance

We use the direct‑expense method of accounting for our regional jet aircraft engine overhaul costs. Under this method, the maintenance liability is not recorded until the maintenance services are performed. With respect to SkyWest Airlines, a third‑party vendor provides our long‑term engine services covering the scheduled and unscheduled repairs for engines on our CRJ700s and E175s operated under our Fixed‑Rate Engine Contracts. Under the terms of the vendor agreement, we pay a set dollar amount per engine hour flown on a monthly basis and the third‑party vendor assumes the obligation to repair the engines at no additional cost to us, subject to certain specified exclusions. Thus, under the third‑party vendor agreement, we expense the engine maintenance costs as flight hours are incurred on the engines and using the contractual rate set forth in the agreement.

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Aircraft Leases

The majority of SkyWest Airlines’ aircraft are leased from third parties, while the majority of ExpressJet’s aircraft flying for Delta and American are debt‑financed.All of ExpressJet’s ERJ145 aircraft flying for United are leased from United for nominal amounts and all of ExpressJet’s ERJ145 aircraft flying for American are leased from American for nominal amounts. In order to determine the proper classification of our leased aircraft as either operating leases or capital leases, we must make certain estimates at the inception of the lease relating to the economic useful life and the fair value of an asset as well as select an appropriate discount rate to be used in discounting future lease payments. These estimates are utilized by management in making computations as required by existing accounting standards that determine whether the lease is classified as an operating lease or a capital lease. All of our aircraft leases have been classified as operating leases, which results in rental payments being charged to expense over the terms of the related leases. Additionally, operating leases are not reflected in our consolidated balance sheet and accordingly, neither a lease asset nor an obligation for future lease payments is reflected in our consolidated balance sheets.See “Recent Accounting Pronouncements” set forth below for a discussion of a recently-adopted new accounting standard that is likely to have an impact on our aircraft lease accounting beginning in 2019.

Impairment of Long‑Lived Assets

As of December 31, 2015, we had approximately $3.5 billion of property and equipment and related assets net of accumulated depreciation. Additionally, as of December 31, 2015, we had approximately $10.5 million in intangible assets. In accounting for these long‑lived and intangible assets, we make estimates about the expected useful lives of the assets, the expected residual values of certain of these assets, and the potential for impairment based on the fair value of the assets and the cash flows they generate. We recorded an intangible of approximately $33.7 million relating to the acquisition of Atlantic Southeast in September 2005. That intangible is being amortized over fifteen years under the straight‑line method. As of December 31, 2015, we had recorded $23.3 million in accumulated amortization expense. Factors indicating potential impairment include, but are not limited to, significant decreases in the market value of the long‑lived assets, a significant change in the condition of the long‑lived assets and operating cash flow losses associated with the use of the long‑lived assets.

When considering whether or not impairment of long‑lived assets exists, we group similar assets together at the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets and liabilities and compare the undiscounted cash flows for each asset group to the net carrying amount of the assets supporting the asset group. Asset groupings are done at the fleet type or contract level.

Stock‑Based Compensation Expense

We estimate the fair value of stock options as of the grant date using the Black‑Scholes option pricing model. We use historical data to estimate option exercises and employee termination in the option pricing model. The expected term of options granted is derived from the output of the option pricing model and represents the period of time that options granted are expected to be outstanding. The expected volatilities are based on the historical volatility of our common stock and other factors.

Fair value

We hold certain assets that are required to be measured at fair value in accordance with United States GAAP. We determined fair value of these assets based on the following three levels of inputs:

Level 1—Quoted prices in active markets for identical assets or liabilities.

Level 2—Observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Some of our marketable securities primarily utilize broker quotes in a non‑active market for valuation of these securities.

Level 3—Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities, therefore requiring an entity to develop its own assumptions.

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We utilize several valuation techniques in order to assess the fair value of our financial assets and liabilities. Our cash and cash equivalents primarily utilize quoted prices in active markets for identical assets or liabilities.

We have valued non‑auction rate marketable securities using quoted prices in active markets for identical assets or liabilities. If a quoted price is not available, we utilize broker quotes in a non‑active market for valuation of these securities. For auction‑rate security instruments, quoted prices in active markets are no longer available. As a result, we have estimated the fair values of these securities utilizing a discounted cash flow model.

Recent Accounting Pronouncements

In May 2014, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update No. 2014-09, “Revenue from Contracts with Customers”   (“ASU No. 2014-09”).  Under ASU No. 2014-09, revenue is recognized at the time a good or service is transferred to a customer for the amount of consideration received for that specific good or service. In July 2015, the FASB deferred the effective date of ASU No. 2014-09 to January 2, 2018.  The FASB also proposed permitting early adoption of the standard, but not before January 2, 2017.  Entities may use a full retrospective approach or report the cumulative effect as of the date of adoption. Our management is currently evaluating the impact the adoption of ASU No. 2014-09 is anticipated to have on our consolidated financial statements.

In April 2015, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update No. 2015-03, “Simplifying the Presentation of Debt Issuance Costs” (“ASU No. 2015-03”). In August 2015, ASU No. 2015-03 was amended to modify existing guidance to require the presentation of debt issuance costs in the balance sheet as a deduction from the carrying amount of the related debt liability instead of as a deferred charge. ASU No. 2015-03 is effective for annual reporting periods beginning after December 15, 2015, but early adoption is permitted. We anticipate reclassifying the unamortized debt issuance costs and present debt net of those unamortized costs on our balance sheet upon adoption of ASU No. 2015-03.

In November 2015, the FASB issued Accounting Standards Update 2015-17, Income Taxes (Topic 740): Balance Sheet Classification of Deferred Taxes (ASU No. 2015-17).  The standard requires that deferred tax liabilities and assets be classified as noncurrent in a classified statement of financial position.  The current requirement that deferred tax liabilities and assets of a tax-paying component of an entity be offset and presented as a single amount is not affected by ASU No. 2015-17.  ASU No. 2015-17 is effective for annual periods beginning after December 15, 2016, and interim periods within those annual periods.  We are evaluating the impact the adoption of ASU 2015-17 is anticipated to have on our consolidated financial statements.

In February 2016, the FASB issued  ASU 2016-02,  Leases (“ASU 2016-02”). The standard amends the existing accounting standards for lease accounting, including requiring lessees to recognize most leases on their balance sheets and making targeted changes to lessor accounting. ASU 2016-02 will be effective beginning in the first quarter of 2019. Early adoption of ASU 2016-02 is permitted. The new leases standard requires a modified retrospective transition approach for all leases existing at, or entered into after, the date of initial application, with an option to use certain transition relief. We are currently evaluating the impact of adopting ASU 2016-02 on our consolidated financial statements.

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Results of Operations

2015 Compared to 2014

Operational Statistics.  The following table sets forth our major operational statistics and the associated percentagesofchange for the periods identified below.

	Year ended December 31,
	2015		2014		% Change
Revenue passenger miles (000)	29,671,911		31,499,397		(5.8)	%
Available seat miles (“ASMs”) (000)	35,902,503		38,220,150		(6.1)	%
Block hours	2,074,804		2,275,562		(8.8)	%
Departures	1,226,897		1,357,454		(9.6)	%
Passengers carried	56,228,593		58,962,010		(4.6)	%
Passenger load factor	82.6	%	82.4	%	0.2	pts
Revenue per available seat mile	8.6	¢	8.5	¢	1.2	%
Cost per available seat mile	8.2	¢	8.6	¢	(4.7)	%
Average passenger trip length (miles)	528		534		(1.1)	%

Revenues.  Total operating revenues decreased $141.9 million, or 4.4%, during the year ended December 31, 2015, compared to the year ended December 31, 2014 primarily due to a decrease in our fleet size as further explained in the passenger revenues section below. Under certain of our fixed-fee flying contracts, certain expenses are subject to direct reimbursement from our major partners and we record such reimbursements as passenger revenue. These reimbursed expenses include fuel, landing fees, station rents and certain engine maintenance expenses. Our fuel expense, landing fees, station rents and directly‑reimbursed engine expense decreased by $73.1  million during the year ended December 31, 2015, as compared to the year ended December 31, 2014, due primarily to (i) our major partners purchasing an increased volume of fuel, landing fees and station rents directly from vendors on flights we operated under our fixed-fee flying agreements and (ii) a reduction in the number of engine maintenance events. The following table summarizes the amount of fuel, landing fees, station rents, and engine maintenance incurred under our fixed-fee agreements and the direct reimbursement was included in our passenger revenues for the periods indicated (dollar amounts in thousands).

	Year Ended December 31,
	2015		2014		$ Change		% Change
Passenger revenues	$	3,030,023	$	3,168,000	$	(137,977)	(4.4)	%
Less: directly-reimbursed fuel from airline partners		41,567		76,675		(35,108)	(45.8)	%
Less: directly-reimbursed landing fee and station rent from airline partners		22,171		23,800		(1,629)	(6.8)	%
Less: directly-reimbursed engine maintenance from airline partners		94,142		130,505		(36,363)	(27.9)	%
Passenger revenue excluding directly-reimbursed fuel, landing fee, station rent and engine maintenance	$	2,872,143	$	2,937,020	$	(64,877)	(2.2)	%

Passenger revenues.  Passenger revenues decreased $138.0 million, or 4.4%, during year ended December 31, 2015, compared to the year ended December 31, 2014. Our passenger revenues, excluding fuel, landing fees, station rents and engine overhaul reimbursements from major partners, decreased $64.9 million, or 2.2%, during the year ended December 31, 2015, compared to the year ended December 31, 2014. The decrease in passenger revenues, excluding fuel, landing fees, station rents and engine overhaul reimbursements, was primarily due to the net reduction to our aircraft in scheduled service from 717 aircraft at December 31, 2014 to 660 aircraft at December 31, 2015 and a reduction to revenue of $7.9 million from a resolution of a contract matter with a major partner. This decrease was partially offset by higher compensation we earned on aircraft placed into service during 2015, improvements in the provisions in certain of our flying contracts since 2014 and additional operational performance incentives earned under our fixed-fee contracts in 2015.

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Ground handling and other.  Total ground handling and other revenues decreased $3.9 million, or 5.6%, during the year ended December 31, 2015, compared to the year ended December 31, 2014. Ground handling and other revenue primarily consists of ground handling services we provide to third‑party airlines and government subsidies we receive for operating certain routes under our pro-rate agreements. Revenues associated with ground handling services we provide for our aircraft are recorded as passenger revenues. The decrease in ground handling and other revenue was primarily due to a reduction in the number of locations for which SkyWest Airlines provided ground handling services to third party airlines during 2015, which was partially offset by an increase volume of departures during the 2015 year on routes subject to government subsidies.

Individual expense components attributable to our operations are expressed in the following table on the basis of cents per ASM (dollar amounts in thousands).

	For the year ended December 31,
	2015		2014		$ Change		% Change		2015 Cents	2014 Cents
	Amount		Amount		Amount		Percent		Per ASM	Per ASM
Salaries, wages and benefits	$	1,203,312	$	1,258,155	$	(54,843)	(4.4)	%	3.4	3.3
Aircraft maintenance, materials and repairs		604,863		682,773		(77,910)	(11.4)	%	1.7	1.8
Aircraft rentals		273,696		305,334		(31,638)	(10.4)	%	0.8	0.8
Depreciation and amortization		264,507		259,642		4,865	1.9	%	0.7	0.7
Aircraft fuel		118,124		193,247		(75,123)	(38.9)	%	0.3	0.5
Ground handling services		82,694		123,917		(41,223)	(33.3)	%	0.2	0.3
Special items		—		74,777		(74,777)	NM		—	0.2
Station rentals and landing fees		54,167		51,024		3,143	6.2	%	0.2	0.1
Other		259,685		263,730		(4,045)	(1.5)	%	0.7	0.7
Total operating expenses	$	2,861,048	$	3,212,599	$	(351,551)	(10.9)	%	8.0	8.4
Interest expense		75,850		65,995		9,855	14.9	%	0.2	0.2
Total airline expenses	$	2,936,898	$	3,278,594	$	(341,696)	(10.4)	%	8.2	8.6

Salaries, Wages and Employee Benefits.  Salaries, wages and employee benefits decreased $54.8 million, or 4.4%, during the year ended December 31, 2015, compared to the year ended December 31, 2014.  The decrease in salaries, wages and employee benefits was primarily due to the decrease in our fleet size and related decrease in the number of departures and block hours compared to the year ended December 31, 2014, which was partially offset by additional training costs for the E175 deliveries and an increase in employee benefit costs.

Aircraft maintenance, materials and repairs.  Aircraft maintenance expense decreased $77.9 million, or 11.4%, during the year ended December 31, 2015, compared to the year ended December 31 2014. The following table summarizes the effect of directly-reimbursed engine maintenance costs under our fixed-fee flying arrangements included in our aircraft maintenance expense for the periods indicated (dollar amounts in thousands).

	For the year ended December 31,
	2015		2014		$ Change		% Change
Aircraft maintenance, materials and repairs	$	604,863	$	682,773	$	(77,910)	(11.4)	%
Less: directly-reimbursed engine maintenance from airline partners		94,142		130,505		(36,363)	(27.9)	%
Other aircraft maintenance, materials and repairs	$	510,721	$	552,268	$	(41,547)	(7.5)	%

Other aircraft maintenance, materials and repairs, excluding our directly-reimbursed engine overhaul costs, decreased $41.5 million, or 7.5%, during the year ended December 31, 2015, compared to the year ended December 31, 2014.  The decrease in aircraft maintenance expense (excluding directly-reimbursed engine overhaul costs) was primarily due to a reduction in direct maintenance costs resulting from a reduced fleet size, partially offset by an increase in power-by-the-hour maintenance costs associated with the additional E175 aircraft added to our fleet since 2014. 

The decrease in our engine overhaul costs incurred under our Directly‑Reimbursed Engine Contracts, was primarily due to a reduced number of engine overhaul events in 2015 compared to 2014.

Aircraft rentals.  Aircraft rentals decreased $31.6 million, or 10.4%, during the year ended December 31, 2015, compared to the year ended December 31, 2014. The decrease was primarily due to a reduction in the number of leased aircraft in our fleet and lower aircraft lease renewal rates since 2014.

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Depreciation and amortization.  Depreciation and amortization expense increased $4.8 million, or 1.9%, during the year ended December 31, 2015, compared to the year ended December 31, 2014. The increase in depreciation and amortization expense was primarily due to the purchase of additional E175 aircraft and spare engines in 2015 that was significantly offset by the reduction in fixed asset depreciation expense that resulted from our removal of all EMB 120 aircraft from service in early 2015.

Fuel.  Fuel costs decreased $75.1 million, or 38.9%, during the year ended December 31, 2015, compared to the year ended December 31, 2014. The decrease in fuel cost was primarily due to the decrease in the average fuel cost per gallon in 2015 compared to 2014,  along with a decrease in the volume in gallons that we purchased under our fixed-fee contracts.  The following table summarizes our aircraft fuel expenses (less directly-reimbursed fuel expense under our fixed-fee flying arrangements) for the periods indicated (dollar amounts in thousands).

	For the year ended December 31,
	2015		2014		$ Change		% Change
Aircraft fuel expenses	$	118,124	$	193,247	$	(75,123)	(38.9)	%
Less: directly-reimbursed fuel from airline partners		41,567		76,675		(35,108)	(45.8)	%
Aircraft fuel less fuel reimbursement from airline partners	$	76,557	$	116,572	$	(40,015)	(34.3)	%

The average fuel cost per gallon was $2.09 and $3.33 for the years ended December 31, 2015 and 2014, respectively. The following table summarizes the gallons of fuel we purchased directly and our fuel expense, for the periods indicated:

	For the year ended December 31,
(in thousands)	2015		2014		% Change
Fuel gallons purchased		56,389		57,959	(2.7)	%
Fuel expense	$	118,124	$	193,247	(38.9)	%

Ground handling service.  Ground handling service expense decreased $41.2 million, or 33.3%, during the year ended December 31, 2015, compared to the year ended December 31, 2014.  The decrease in ground handling service expense was primarily due to a reduction in the number of locations for which SkyWest Airlines provided ground handling services subsequent to December 31, 2014.

Special items.  Special items for the year ended December 31, 2014 included impairment charges to write‑down owned EMB120 aircraft, including capitalized engine overhaul costs, and related long‑lived assets to their estimated fair value and accrued obligations on leased aircraft and related costs of $57.1 million. The special item associated with the EMB120 aircraft was triggered by our decision in November 2014 to remove the EMB120 aircraft from service by the end of the second quarter of 2015. The special item additionally consisted of impairment charges to write‑down certain ERJ145 long‑lived assets, including spare engines and capitalized aircraft improvements, to their estimated fair value and accrued obligations on leased aircraft and related costs of $12.9 million. The special item associated with the ERJ145 aircraft was triggered by our execution of an amended and restated contract with United in November 2014. The amended and restated contract provides for accelerated lease termination dates of certain ERJ145 aircraft and advances the termination date of the ExpressJet United ERJ Agreement to operate the ERJ145s from the year 2020 to 2017. The special item also includes the write‑down of assets associated with the disposition of our paint facility located in Saltillo, Mexico of $4.8 million. We sold the Saltillo paint facility during the year ended December 31, 2014.

Station rents and landing fees.Station rents and landing fees expense increased $3.1 million, or 6.2%, during the year ended December 31, 2015, compared to the year ended December 31, 2014.  Excluding our directly-reimbursed expenses incurred under our fixed-fee contracts,station rents and landing fees increased $4.8 million, or 17.5%, during the year ended December 31, 2015. The increase in station rents and landing fees,excluding our directly-reimbursed expenses, was primarily due to an increase in the number of flights operatedin our pro-rate agreements.The following table summarizes our station rents and landing fees (less directly-reimbursed landing fees and station rents under our fixed-fee flying arrangements) for the periods indicated (dollar amounts in thousands).

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tation
	For the year ended December 31,
	2015		2014		$ Change		% Change
Station rents and landing fees	$	54,167	$	51,024	$	3,143	6.2	%
Less: directly-reimbursed landing fee and station rent from airline partners		22,171		23,800		(1,629)	(6.8)	%
Station rents and landing feesless directly-reimbursed landing fee and station rent from airline partners	$	31,996	$	27,224	$	4,772	17.5	%

Other operating expenses.  Other operating expenses, primarily consisting of property taxes, hull and liability insurance, crew simulator training,  and crew hotel costs, decreased $4.0 million, or 1.5%, during the year ended December 31, 2015, compared to the year ended December 31, 2014. The decrease in other operating expenses was primarily related to a reduction in fleet size, partially offset by additional training costs associated with E175 deliveries, including the use of simulators, hotels and crew per diem costs.

Total airline expenses.  Total airline expenses (consisting of total operating and interest expenses) decreased $341.7 million, or 10.4%, during the year ended December 31, 2015, compared to the year ended December 31, 2014. Under our contract flying arrangements, we are reimbursed by our major airline partners for our actual fuel costs, contract related station rents, landing fees and engine overhaul costs under our Directly‑Reimbursed Engine Contracts. We record such reimbursements as revenue. The following table summarizes the amount of fuel and engine overhaul expenses which are included in our total airline expenses for the periods indicated (dollar amounts in thousands).

	For the year ended December 31,
	2015		2014		$ Change	% Change
Total airline expense	$	2,936,898	$	3,278,594	(341,696)	(10.4)	%
Less: directly-reimbursed fuel from airline partners		41,567		76,675	(35,108)	(45.8)	%
Less: directly-reimbursed landing fee and station rent from airline partners		22,171		23,800	(1,629)	(6.8)	%
Less: directly-reimbursed engine maintenance from airline partners		94,142		130,505	(36,363)	(27.9)	%
Total airline expense excluding directly-reimbursed fuel, landing fee, station rent and engine maintenance	$	2,779,018	$	3,047,614	(268,596)	(8.8)	%

Excluding directly reimbursed costs by our major partners for fuel, station rents, landing fees and engine overhaul costs, our total airline expenses decreased $268.6 million, or 8.8%, during the year ended December 31, 2015, compared to the year ended December 31, 2014. The decrease in total airline expenses, excluding directly-reimbursed fuel, station rents, landing fees and engine overhauls, was primarily due to the reduction in fleet size and related block hour production of 8.8% duringthe year ended December 31, 2015, compared to the year ended December 31, 2014.

Summary of other income (expense) items and provision for income taxes:

Other Income (expense), net.Other income (expense) for the 2015 year of $33.7 million was primarily due to a gain resulting from the early payoff of $145.4 million in debt with $110.8 million in cash, net of deferred loancosts written off associated with the debt.  Other income for the 2014 year of $24.9 million primarily resulted from the sale of our equity investment in TRIP Linhas Arereas, a regional airline operation in Brazil (“TRIP”).

Provision for income taxes.The income tax provision for the 2015 year included a release of valuation allowance of $0.9 million for previously generated state net operating loss benefits primarily for  ExpressJet that we previously anticipated would expire. The release of the valuation allowance was based on the gain related to early retirement of certain long term debt which reduced the amount of deferred tax assets that we anticipate will expire before the deferred tax assets may be utilized. 

The income tax provision for the 2014 year included a valuation allowance of $6.0 million for previously generated state net operating loss benefits specific to ExpressJet that we anticipate to expire, $2.0 million of foreign income tax associated with our sale of ownership in TRIP stock, and the write‑off of $2.4 million of tax assets associated

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with the sale of our paint facility located in Saltillo, Mexico during 2014. These discrete income tax provision items were partially offset by the income tax benefit associated with our loss before income tax of $16.3 million for 2014.

Net Income (loss).  Primarily due to factors described above, we generated net income of $117.8 million, or $2.27 per diluted share, for the year ended December 31, 2015, compared to net loss of $24.2 million, or $(0.47) per diluted share, for the year ended December 31, 2014.

2014 Compared to 2013

Operational Statistics.  The following table sets forth our major operational statistics and the associated percentages‑of‑change for the periods identified below.

	For the year ended December 31,
	2014		2013		% Change
Revenue passenger miles (000)	31,499,397		31,834,735		(1.1)	%
Available seat miles (“ASMs”) (000)	38,220,150		39,207,910		(2.5)	%
Block hours	2,275,562		2,380,118		(4.4)	%
Departures	1,357,454		1,453,601		(6.6)	%
Passengers carried	58,962,010		60,581,948		(3)	%
Passenger load factor	82.4	%	81.2	%	1.2	pts
Revenue per available seat mile	8.5	¢	8.4	¢	1.2	%
Cost per available seat mile	8.6	¢	8.2	¢	4.9	%
Average passenger trip length (miles)	534		525		1.7	%

Revenues.  Total operating revenues decreased $60.3 million, or 1.8%, during the year ended December 31, 2014, compared to the year ended December 31, 2013. Under certain of our fixed-fee flying contracts, certain expenses are subject to direct reimbursement from our major partners and we record such reimbursements as passenger revenue. These reimbursed expenses include fuel, landing fees, station rents and certain engine maintenance expenses. Our fuel expense, landing fees, station rents and directly‑reimbursed engine expense decreased by $79.1 million during the year ended December 31, 2014, as compared to the year ended December 31, 2013, which was due primarily to (i) our major partners purchasing an increased volume of fuel, landing fees and station rents directly from vendors on flights we operated under our fixed-fee flying agreements and (ii) a reduction in the number of engine maintenance events. The following table summarizes the amount of fuel, landing fees, station rents, and engine maintenance incurred under our fixed-fee agreements and the direct reimbursement was included in our passenger revenues for the periods indicated (dollar amounts in thousands).

	For the year ended December 31,
	2014		2013		$ Change		% Change
Passenger revenues	$	3,168,000	$	3,239,525	$	(71,525)	(2.2)	%
Less: directly-reimbursed fuel from airline partners		76,675		91,925		(15,250)	(16.6)	%
Less: directly-reimbursed landing fee and station rent from airline partners		23,800		95,175		(71,375)	(75.0)	%
Less: directly-reimbursed engine maintenance from airline partners		130,505		123,024		7,481	6.1	%
Passenger revenue excluding directly-reimbursed fuel, landing fee, station rent and engine maintenance	$	2,937,020	$	2,929,401	$	7,619	0.3	%

Passenger revenues.  Passenger revenues decreased $71.5 million, or 2.2%, during year ended December 31, 2014, compared to the year ended December 31, 2013. Our passenger revenues, excluding fuel, landing fees, station rents and engine overhaul reimbursements from major partners, increased $7.6 million, or 0.3%, during the year ended December 31, 2014, compared to the year ended December 31, 2013. The increase in passenger revenues, excluding fuel, landing fees, station rents and engine overhaul reimbursements, was primarily due to the additional E175 operations

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that began in 2014, improvements in the provisions in certain of our flying contracts and additional revenue sharing operations, partially offset by reductions in the ExpressJet fleet size, severe weather experienced in the first half of 2014 and reduced contract performance incentives.

Ground handling and other.  Total ground handling and other revenues increased $11.3 million, or 19.3%, during the year ended December 31, 2014, compared to the year ended December 31, 2013. Ground handling and other revenue primarily consists of ground handling services we provide to third‑party airlines and government subsidies we receive for operating certain routes. Revenues associated with ground handling services we provide for our aircraft are recorded as passenger revenues. The increase in ground handling and other revenue was primarily due to an increased volume of departures during the 2014 year on routes subject to government subsidies.

Individual expense components attributable to our operations are expressed in the following table on the basis of cents per ASM (dollar amounts in thousands).

	For the year ended December 31,
									2014	2013
	2014		2013		$ Change		% Change		Cents Per	Cents Per
	Amount		Amount		Amount		Percent		ASM	ASM
Salaries, wages and benefits	$	1,258,155	$	1,211,307	$	46,848	3.9	%	3.3	3.1
Aircraft maintenance, materials and repairs		682,773		686,381		(3,608)	(0.5)	%	1.8	1.8
Aircraft rentals		305,334		325,360		(20,026)	(6.2)	%	0.8	0.8
Depreciation and amortization		259,642		245,005		14,637	6.0	%	0.7	0.6
Aircraft fuel		193,247		193,513		(266)	(0.1)	%	0.5	0.5
Ground handling services		123,917		129,119		(5,202)	(4.0)	%	0.3	0.3
Special Items		74,777		—		74,777	NM		0.2	—
Station rentals and landing fees		51,024		114,688		(63,664)	(55.5)	%	0.1	0.3
Other		263,730		239,241		24,489	10.2	%	0.7	0.6
Total operating expenses		3,212,599		3,144,614		67,985	2.2	%	8.4	8.0
Interest expense		65,995		68,658		(2,663)	(3.9)	%	0.2	0.2
Total airline expenses	$	3,278,594	$	3,213,272	$	65,322	2.0	%	8.6	8.2

Salaries, Wages and Employee Benefits.  Salaries, wages and employee benefits increased $46.8 million, or 3.9%, during the year ended December 31, 2014, compared to the year ended December 31, 2013. The increase in salaries, wages and employee benefits was primarily due to additional expenses attributable to the implementation of the Improvement Act, which had a negative effect on pilot scheduling and work hours and resulted in increased crew costs. The increase was also due to the additional E175 operations and training costs associated with the commencement of our E175 flight operations during 2014.

Aircraft maintenance, materials and repairs.  Aircraft maintenance expense decreased $3.6 million, or 0.5%, during the year ended December 31, 2014, compared to the year ended December 31 2013. The following table summarizes the effect of directly reimbursed engine maintenance costs under our fixed-fee flying arrangements included in our aircraft maintenance expense for the periods indicated (dollar amounts in thousands).

	For the Year ended December 31,
	2014		2013		$ Change		% Change
Aircraft maintenance, materials and repairs	$	682,773	$	686,381	$	(3,608)	(0.5)	%
Less: directly-reimbursed engine maintenance from airline partners		130,505		123,024		7,481	6.1	%
Other aircraft maintenance, materials and repairs	$	552,268	$	563,357	$	(11,089)	(2.0)	%

Other aircraft maintenance, materials and repairs, decreased $11.1 million, or 2.0%, during the year ended December 31, 2014, compared to the year ended December 31, 2013. The decrease was primarily driven by a reduction 

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in CRJ200 engine overhaul costs of $14.1 million in 2014 compared to 2013. This decrease was partially offset by an increase in the number of scheduled maintenance events and aircraft parts replacement primarily due to the timing of major maintenance events and general aging of our CRJ and ERJ fleet.

We recognize engine maintenance expense on our CRJ200 engines on an as‑incurred basis as maintenance expense. Under our Fixed‑Rate Engine Contracts, we recognize revenue at fixed hourly rates for mature engine maintenance on regional jet engines. Accordingly, the timing of engine maintenance events associated with aircraft under the Fixed‑Rate Engine Contracts can have a significant impact on our financial results. During the year ended December 31, 2014, our CRJ200 engine expense under our Fixed‑Rate Engine Contracts decreased $14.2 million compared to the year ended December 31, 2013. The decrease in CRJ200 engine overhauls reimbursed under our Fixed‑Rate Engine Contracts was principally due to fewer scheduled engine maintenance events.

Under our Directly‑Reimbursed Engine Contracts, we are reimbursed for engine overhaul costs by our applicable major partner at the time the maintenance event occurs. Such reimbursements are reflected as passenger revenue in the same amount and during the same period we recognized the expense in our consolidated statements of comprehensive income.

Aircraft rentals.  Aircraft rentals decreased $20.0 million, or 6.2%, during the year ended December 31, 2014, compared to the year ended December 31, 2013. The decrease was primarily due to a reduction in leased aircraft in our fleet and lower aircraft lease renewal rates since 2013.

Depreciation and amortization.  Depreciation and amortization expense increased $14.6 million, or 6.0%, during the year ended December 31, 2014, compared to the year ended December 31, 2013. The increase in depreciation and amortization expense was primarily due to the purchase of 20 E175 aircraft and related long lived assets in 2014, combined with acquisition of used aircraft and spare engines in 2014.

Fuel.  Fuel costs decreased $0.3 million, or 0.1%, during the year ended December 31, 2014, compared to the year ended December 31, 2013. The decrease in fuel cost was primarily due to the decrease in the average fuel cost per gallon in 2014 compared to 2013, offset by the increased volume of fuel used in our expanded pro‑rate flying operations during 2014 year compared to 2013.The following table summarizes our aircraft fuel expenses (less directly-reimbursed fuel expense under our fixed-fee flying arrangements) for the periods indicated (dollar amounts in thousands).

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	For the year ended December 31,
	2014		2013		$ Change		% Change
Aircraft fuel expenses	$	193,247	$	193,513	$	(266)	(0.1)	%
Less: directly-reimbursed fuel from airline partners		76,675		91,925		(15,250)	(16.6)	%
Aircraft fuel less fuel reimbursement from airline partners	$	116,572	$	101,588	$	14,984	14.7	%

The average fuel cost per gallon was $3.33 and $3.60 for the years ended December 31, 2014 and 2013, respectively. The following table summarizes the gallons of fuel we purchased directly and our fuel expense, for the periods indicated:

	For the year ended December 31,
(in thousands, except per gallon amounts)	2014		2013		% Change
Fuel gallons purchased		57,959		53,825	7.7	%
Fuel expense	$	193,247	$	193,513	(0.1)	%

Ground handling service.  Ground handling service expense decreased $5.2 million, or 4.0%, during the year ended December 31, 2014, compared to the year ended December 31, 2013. The decrease in ground handling service expense was primarily due to a reduction in outsourced customer service and ramp functions at airport locations serving our pro‑rate operations.

Special items.  Special items for the year ended December 31, 2014 included impairment charges to write‑down owned EMB120 aircraft, including capitalized engine overhaul costs, and related long‑lived assets to their estimated fair value and accrued obligations on leased aircraft and related costs of $57.1 million. The special item associated with the

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EMB120 aircraft was triggered by our decision in November 2014 to remove the EMB120 aircraft from service by the end of the second quarter of 2015. The special item additionally consisted of impairment charges to write‑down certain ERJ145 long‑lived assets, including spare engines and capitalized aircraft improvements, to their estimated fair value and accrued obligations on leased aircraft and related costs of $12.9 million. The special item associated with the ERJ145 aircraft was triggered by our execution of an amended and restated contract with United in November 2014. The amended and restated contract provides for accelerated lease termination dates of certain ERJ145 aircraft and advances the termination date of the ExpressJet United ERJ Agreement to operate the ERJ145s from the year 2020 to 2017. The special item also includes the write‑down of assets associated with the disposition of our paint facility located in Saltillo, Mexico of $4.8 million. We sold the Saltillo paint facility during the year ended December 31, 2014.

Station rentals and landing fees.  Station rentals and landing fees expense decreased $63.7 million, or 55.5%, during the year ended December 31, 2014, compared to the year ended December 31, 2013. The decrease in station rentals and landing fees expense was primarily due to our major partners paying for an increased amount of station rents and landing fees directly to the applicable airports related to our contract flying arrangements.

4
	For the year ended December 31,
	2014		2013		$ Change		% Change
Station rents and landing fees	$	51,024	$	114,688	$	(63,664)	(55.5)	%
Less: Landing fee and station rent reimbursements from airline partners		23,800		95,175		(71,375)	(75.0)	%
Station rents and landing fees less station rent and landing fee reimbursements from airline partners	$	27,224	$	19,513	$	7,711	39.5	%

Other operating expenses.  Other operating expenses, primarily consisting of property taxes, hull and liability insurance, crew simulator training and crew hotel costs, increased $24.5 million, or 10.2%, during the year ended December 31, 2014, compared to the year ended December 31, 2013. The increase in other operating expenses was primarily due to additional crew lodging expenses attributable to the requirements of the Improvement Act. The increase was also attributable to additional other operating expense items associated with incremental pro‑rate operations in 2014.

Total airline expenses.  Total airline expenses (consisting of total operating and interest expenses) increased $65.3 million, or 2.0%, during the year ended December 31, 2014, compared to the year ended December 31, 2013. Under our contract flying arrangements, we are reimbursed by our major airline partners for our actual fuel costs and engine overhaul costs under our Directly‑Reimbursed Engine Contracts. We record such reimbursements as revenue. The following table summarizes the amount of fuel and engine overhaul expenses which are included in our total airline expenses for the periods indicated (dollar amounts in thousands).

	For the year ended December 31,
	2014		2013		$ Change		% Change
Total airline expense	$	3,278,594	$	3,213,272	$	65,322	2.0	%
Less: directly-reimbursed fuel from airline partners		76,675		91,925		(15,250)	(16.6)	%
Less: directly-reimbursed landing fee and station rent from airline partners		23,800		95,175		(71,375)	(75.0)	%
Less: directly-reimbursed engine maintenance from airline partners		130,505		123,024		7,481	6.1	%
Total airline expense excluding directly-reimbursed fuel, landing fee, station rent and engine maintenance	$	3,047,614	$	2,903,148	$	144,466	5.0	%

Excluding directly-reimbursed fuel, station rent, landing fees and engine overhaul costs, our total airline expenses increased $144.5 million, or 5.0%, during the year ended December 31, 2014, compared to the year ended December 31, 2013. The increase in total airline expenses, excluding directly-reimbursed fuel, station rent, landing fees and engine overhaul costs,, was primarily due to the special items recorded during 2014 of $74.8 million, and an increase in salaries, wages and benefits and other operating expenses of $71.3 million, offset by a reduction in station rents and landing fees of $63.7 million, as further explained above.

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Summary of other income (expense) items and provision for income taxes:

Other Income (expense), net.  Other income (expense) for the 2014 year includes a gain of $24.9 million resulting from the sale of our ownership in TRIP stock, offset by losses from the sale of assets during 2014. Other income (expense) for the year ended December 31, 2014 primarily consisted of $10.1 million associated with our sale of stock in Mekong Aviation Joint Stock Company, an airline operating in Vietnam (“Air Mekong”), and recognition of maintenance deposit we collected associated with the aircraft sub‑leases we terminated with Air Mekong.

Provision for income taxes.  The income tax provision for the 2014 year included a valuation allowance of $6.0 million for previously generated state net operating loss benefits specific to ExpressJet that we anticipate to expire, $2.0 million of foreign income tax associated with our sale of ownership in TRIP stock, and the write‑off of $2.4 million of tax assets associated with the sale of our paint facility located in Saltillo, Mexico during 2014. These discrete income tax provision items were partially offset by the income tax benefit associated with our loss before income tax of $16.3 million for 2014.

Net Income (loss).  Primarily due to factors described above, we generated a net loss of $24.2 million, or $(0.47) per diluted share, for the year ended December 31, 2014, compared to net income of $59.0 million, or $1.12 per diluted share, for the year ended December 31, 2013.

Our Business Segments 2015 compared to 2014:

For the year ended December 31, 2015, we had three reportable segments which are the basis of our internal financial reporting: Our segment disclosure relates to components of our business for which separate financial information is available to, and regularly evaluated by our chief operating decision maker. Our operating segment consists of SkyWest Airlines,  ExpressJet andSkyWest Leasing. Corporate overhead expense is allocated to the operating expenses of SkyWest Airlines and ExpressJet.  

During the fourth quarter of 2015, due to the increase in acquired E175 aircraft and the related aircraft debt financing, our chief operating decision maker started to analyze the flight operations of our E175 aircraft separately from the acquisition, ownership and financing costs and related revenue.  Because of this change, the “SkyWest Leasing” segment includes revenue attributed to our E175 ownership cost earned under the applicable fixed-fee flying contracts, and the depreciation and interest expense of our E175 aircraft.  The “SkyWest Leasing” segment’s total assets and capital expenditures include the acquired E175 aircraft.  The “SkyWest Leasing” segment additionally includes the income from two CRJ200 aircraft leased to a third party.

As a result of the change in segmentation, prior periods have been recast to conform to the current presentation. We reclassified $15.0 million of operating revenue, $8.5 million of depreciation expense, $4.9  million of interest expense, $1.6 million of segment profit, $527.0 million of total assets and $535.5 million of capital expenditures (including non-cash) from the “SkyWest Airlines” segment to the “SkyWest Leasing” segment for the year ended December 31, 2014 to reflect the respective E175 activity in the “SkyWest Leasing” segment for 2014.

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The following table sets forth our segment data for the years ended December 31, 2015 and 2014 (in thousands):

	2015		2014		$ Change		% Change
	Amount		Amount		Amount		Percent
Operating Revenues:
SkyWest Airlines operating revenue	$	1,848,363	$	1,873,675	$	(25,312)	(1.4)	%
ExpressJet operating revenues		1,169,923		1,346,859		(176,936)	(13.1)	%
SkyWest Leasing operating revenues		77,277		16,913		60,364	356.9	%
Total Operating Revenues	$	3,095,563	$	3,237,447	$	(141,884)	(4.4)	%
Airline Expenses:
SkyWest Airlines airline expense	$	1,666,341	$	1,797,596	$	(131,255)	(7.3)	%
ExpressJet airlines expense		1,204,161		1,464,804		(260,643)	(17.8)	%
SkyWest Leasing airline expense		66,396		16,194		50,202	310.0	%
Total Airline Expense(1)	$	2,936,898	$	3,278,594	$	(341,696)	(10.4)	%
Segment profit (loss):
SkyWest Airlines segment profit	$	182,022	$	76,079	$	105,943	139.3	%
ExpressJet segment loss		(34,238)		(117,945)		83,707	(71.0)	%
SkyWest Leasing profit (Loss)		10,881		719		10,162	NM
Total Segment Profit (Loss)	$	158,665	$	(41,147)	$	199,812	(485.6)	%
Interest Income		1,997		4,096		(2,099)	(51.2)	%
Other Income (Expense), net		33,660		20,708		12,952	62.5	%
Consolidated Income (Loss) Before Taxes	$	194,322	$	(16,343)	$	210,665	NM

(1) Total Airline Expense includes operating expense and interest expense

NM: Change more than 1,000%

SkyWest Airlines Segment Profit.  SkyWest Airlines segment profit increased $105.9 million, or 139.3%, during the year ended December 31, 2015, compared to the year ended December 31, 2014. The SkyWest Airlines 2014 segment included $57.0 million of special item expenses associated with the removal of the EMB120 aircraft type. The remaining improvement in the SkyWest segment profit was primarily due to additional contract incentives earned under its fixed-fee contracts, additional profitability from operating the E175 aircraft and a reduction in fuel costs incurred under the pro-rate agreements.

SkyWest Airlines block hour production increased to 1,074,809, or 1.4% for the 2015 year from 1,060,147 for the 2014 year primarily due to the additional block hour production from the new E175 aircraft added subsequent to December 31, 2014 which was partially offset by a reduction in block hour production from removing the EMB120 aircraft type from service. Significant items contributing to the SkyWest Airlines segment profit are set forth below.

SkyWest Airlines operating revenue decreased by $25.3 million or 1.4%, for the 2015 year compared to the 2014 year. The decrease was primarily due to a decrease in fuel, landing fees, station rents and engine overhaul reimbursements from major partners.This decrease was partially offset by additional E175 operations along with improved contract performance incentives.

SkyWest Airlines Airline Expense decreased by $131.3 million, or 7.3% during the year ended December 31, 2015, compared to the year ended December 31, 2014.  The decrease in the SkyWest Airlines Airline Expense was primarily due to the following factors:

· SkyWest Airlines airline expense included an increase in salaries, wages and employee benefits of $29.1 million, or 4.8%, for the 2015 year compared to the 2014 year, primarily due to the additional block hour production and related crew training associated with the new E175 aircraft deliveries.

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· SkyWest Airlines’ ground handling service expense decreased $22.0 million, or 25.6%, during the 2015 year, compared to the 2014 year. The decrease in ground handling service expense was primarily due to a reduction in the locations at which SkyWest Airlines provided ground handling services subsequent to December 31, 2014.

· SkyWest Airlines’ fuel expense decreased $60.2 million, or 34.4%, during the 2015 year, compared to the 2014 year.  The decrease in fuel cost was primarily due to a decrease in the average fuel cost per gallon in 2015 compared to 2014.  The average fuel cost per gallon was $2.09 and $3.33 for the year 2015 and 2014, respectively.

· SkyWest Airlines’ aircraft maintenance, materials and repairs expense decreased by $9.0 million, or 3.0%, during the 2015 year, compared to the 2014 year.  The decrease was primarily attributable to a decrease in scheduled maintenance events and the replacement and repair of aircraft parts and components.

· SkyWest Airlines airline expense in 2014 included special items of $57.1 million for impairment charges to write‑down owned EMB120 aircraft, including capitalized engine overhaul costs, and related long‑lived assets to their estimated fair value and accrued obligations on leased aircraft and related costs.

· The remaining decrease in the SkyWest Airlines airline expense was primarily attributable to a reduction in the EMB120 aircraft related depreciation, partially offset by crew-related training costs including simulators, hotels and crew per diem.

ExpressJet Segment Loss.  ExpressJet segment loss decreased $83.7 million, or 71.0%, during the year ended December 31, 2015, compared to the year ended December 31, 2014. The ExpressJet 2014 segment included $17.7 million of special item expenses associated with the ERJ145 aircraft and write down of certain assets. The remaining improvement in the ExpressJet segment loss was primarily due to the removal of aircraft operating under unprofitable fixed-fee contracts, higher flight completion rates, higher contract incentives earned under its fixed-fee contracts and rate improvements in certain fixed-fee contracts rates compared to 2014.

ExpressJet’s block hour production decreased to 999,995, or17.7% for the year ended December 31, 2015 from 1,215,413 for the year ended December 31, 2014 primarily due to the removal of ERJ145 aircraft previously operated under its United fixed-fee agreement, which was partially offset by additional block hour production from its ERJ145 agreement with American subsequent to December 31, 2014.  Significant items contributing to the ExpressJet segment loss are set forth below:

ExpressJet’s operating revenue decreased by $176.9 million, or 13.1%, for the 2015 year compared to the 2014 year. The decrease was primarily due to a reduction in scheduled departures in ExpressJet’s ERJ145 fleet operating under its United fixed-fee arrangement, which was partially offset by an increase in contract performance incentives earned and higher completion rates.

ExpressJet’s Airline Expense decreased $260.6 million, or 17.8%, during the year ended December 31, 2015, compared to the year ended December 31, 2014.  The decrease in the ExpressJet Airlines Expense was primarily due to the following factors:

· ExpressJet’s salaries, wages and benefits decreased $83.7 million, or 12.9%, during the 2015 year, compared to the 2014 year..  The decrease was primarily due to a decrease in scheduled production subsequent to 2014 that resulted, from the decreased number of ERJ145 and CRJ200 aircraft in operation under ExpressJet’s United fixed-fee arrangements.

· ExpressJet’s aircraft maintenance, materials and repairs expense, decreased $70.5 million, or 18.1%, during the 2015 year, compared to the 2014 year.  The decrease was primarily due to the reduced fleet size and related production subsequent to 2014.

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· ExpressJet’s aircraft rental expenses decreased $21.0 million, or 23.3%, during the 2015 year, compared to the 2014 year, primarily due to the termination of aircraft leases on CRJ200 aircraft since 2014.

· ExpressJet’s ground handling services expenses decreased $19.2 million, or 50.7%, during the 2015 year, compared to the 2014 year, primarily due to a decrease in scheduled production and reduced fleet size.

· ExpressJet’s other airline expenses decreased $25.4 million, or 18.1%, during the 2015 year, compared to the 2014 year, primarily due to a decrease in scheduled production subsequent to 2014.

· ExpressJet airlines 2014 expenses included special items of $12.9 million for impairment charges to write‑down certain ERJ145 long‑lived assets, including spare engines and capitalized aircraft improvements, to their estimated fair value and accrued obligations on leased aircraft and related costs. ExpressJet also had $4.8 million in special charges associated with the write‑down of its paint facility located in Saltillo, Mexico that was sold in 2014.

SkyWest Leasing segment Profit.SkyWest Leasing  profit increased $10.2 million during the year ended December 31, 2015, compared to the year ended December 31, 2014, primarily due to the additional E175 aircraft revenue attributed to the ownership costs of the E175 aircraft earned under the applicable fixed-fee flying contract and profitability offset by the E175 aircraft depreciation and interest expense.During the fourth quarter of 2015, we resolved a contract matter with one of our major partners that resulted in a $7.9 million reduction to revenue.  This reduction is reflected in the SkyWest Leasing segment as this amount related to an aircraft financing matter for the year ended December 31, 2015.

Our Business Segments 2014 compared to 2013:

For the year ended December 31, 2014, we had three reportable segments which are the basis of our internal financial reporting: Our segment disclosure relates to components of our business for which separate financial information is available to, and regularly evaluated by our chief operating decision maker. Our operating segment consists of SkyWest Airlines, ExpressJet and SkyWest Leasing. Corporate overhead expense is allocated to the operating expenses of SkyWest Airlines and ExpressJet.  

During the fourth quarter of 2015, due to the increase in acquired E175 aircraft and the related aircraft debt financing, our chief operating decision maker started to analyze the flight operations of our E175 aircraft separately from the acquisition, ownership and financing costs and related revenue.  Because of this change, the “SkyWest Leasing” segment includes revenue attributed to our E175 ownership cost earned under the applicable fixed-fee flying contracts, and the depreciation and interest expense of our E175 aircraft.  The “SkyWest Leasing” segment’s total assets and capital expenditures include the acquired E175 aircraft.  The “SkyWest Leasing” segment additionally includes the income from two CRJ200 aircraft leased to a third party.

As a result of the change in segmentation, prior periods have been recast to conform to the current presentation. We reclassified $15.0 million of operating revenue, $8.5 million of depreciation expense, $4.9 million of interest expense, $1.6 million of segment profit, $527.0 million of total assets and $535.5 million of capital expenditures (including non-cash) from the “SkyWest Airlines” segment to the “SkyWest Leasing” segment for the year ended December 31, 2014 to reflect the respective E175 activity in the “SkyWest Leasing” segment for 2014.

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The following table sets forth our segment data for the years ended December 31, 2014 and 2013 (in thousands):

	2014		2013		$ Change		% Change
	Amount		Amount		Amount		Percent
Operating Revenues:
SkyWest Airlines operating revenue	$	1,873,675	$	1,827,568	$	46,107	2.5	%
ExpressJet operating revenues		1,346,859		1,466,341		(119,482)	(8.1)	%
SkyWest Leasing operating revenues		16,913		3,816		13,097	343.2	%
Total Operating Revenues	$	3,237,447	$	3,297,725	$	(60,278)	(1.8)	%
Airline Expenses:
SkyWest airlines expense	$	1,797,596	$	1,688,049	$	109,547	6.5	%
ExpressJet airlines expense		1,464,804		1,515,336		(50,532)	(3.3)	%
SkyWest Leasing airline expense		16,194		9,887		6,307	63.8	%
Total Airline Expense(1)		3,278,594	$	3,213,272	$	65,322	2.0	%
Segment profit (loss):
SkyWest Airlines segment profit	$	76,079	$	139,519	$	(63,440)	(45.5)	%
ExpressJet segment loss		(117,945)		(48,995)		(68,950)	140.7	%
SkyWest Leasing profit (Loss)		719		(6,071)		6,790	(111.8)	%
Total Segment Profit	$	(41,147)	$	84,453	$	(125,600)	(148.7)	%
Interest Income		4,096		3,689		407	11.0	%
Other		20,708		10,390		10,318	99.3	%
Consolidated Income Before Taxes	$	(16,343)	$	98,532	$	(114,875)	(116.6)	%

Total Airline Expense includes operating expense and interest expense

SkyWest Airlines Segment Profit.  SkyWest Airlines segment profit decreased $63.4 million, or 45.5%, during the year ended December 31, 2014, compared to the year ended December 31, 2013. The decrease in the SkyWest Airlines’ segment profit was due primarily to the following factors:

· SkyWest Airlines operating revenue increased by $46.1 million or 2.5%, for the 2014 year compared to the 2013 year. The increase was primarily due to the additional E175 operations we began in 2014, increased government subsidies applicable to certain routes we operated and improvements in the provisions of certain of our flying contracts since 2013. The increase in operating revenue was partially offset by additional expenses described below.

· SkyWest Airlines airline expense included special items of $57.1 million for impairment charges to write‑down owned EMB120 aircraft, including capitalized engine overhaul costs, and related long‑lived assets to their estimated fair value and accrued obligations on leased aircraft and related costs.

· SkyWest Airlines airline expense included an increase in salaries, wages and employee benefits of $41.1 million, or 7.2%, for the 2014 year compared to the 2013 year, primarily due to direct labor costs associated with our increased pro‑rate and E175 operations during the year, and increased labor related costs attributable to the implementation of the Improvement Act.

· SkyWest Airlines’ airline expense included an increase in other direct operating costs of $11.3 million, or 1.0%, during the 2014 year, compared to the 2013 year, primarily due to other operating expenses associated with the additional pro‑rate and E175 operations and additional crew hotel expenses due to crew scheduling inefficiencies resulting from the Improvement Act.

ExpressJet Segment Loss.  ExpressJet segment loss increased $68.9 million, or 140.7%, during the year ended December 31, 2014, compared to the year ended December 31, 2013. The increase in ExpressJet segment loss was due primarily to the following factors:

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· ExpressJet’s operating revenue decreased by $119.5 million, or 8.1%, for the 2014 year compared to the 2013 year. The decrease in operating revenue was primarily due to a reduction in the ExpressJet fleet size and severe weather that negatively impacted the operations in the first half of 2014. These two factors resulted in a decrease in block hour production of 107,220 hours at ExpressJet, or 8.1%, for 2014 compared to 2013.

· ExpressJet airlines 2014 expenses included special items of $12.9 million for impairment charges to write‑down certain ERJ145 long‑lived assets, including spare engines and capitalized aircraft Improvements, to their estimated fair value and accrued obligations on leased aircraft and related costs. ExpressJet also had $4.8 million in special charges associated with the write‑down of its paint facility located in Saltillo, Mexico that was sold in 2014.

· ExpressJet’s airline expense decreased $50.5 million, or 3.3%, for the 2014 year compared to the 2013 year. The decrease was not proportionate to the decrease in operating revenue for the comparable periods due to the inefficiencies and costs associated with the weather cancellations experienced in the first half of 2014 and additional expenses, including pilot training, associated with the implementation of the Improvement Act in 2014 compared to 2013.

SkyWest LeasingProfit (Loss).SkyWest Leasing profit increased $6.8 million during the year ended December 31, 2014, compared to the year ended December 31, 2013, primarily due to the additional E175 aircraft revenue attributed to the ownership costs of the E175 aircraft earned under the applicable fixed-fee flying contracts and profitability offset by the E175 aircraft depreciation and interest expense. SkyWest Leasing profit(loss) for 2013 was primarily due to maintenance costs associated with transferring aircraft costs from AirMekong to SkyWest Airlines.

Liquidity and Capital Resources

Sources and Uses of Cash—2015 Compared to 2014

Cash Position and Liquidity.  The following table provides a summary of the net cash provided by (used in) our operating, investing and financing activities for the years ended December 31, 2015 and 2014, and our total cash and marketable securities position as of December 31, 2015 and December 31, 2014 (in thousands).

	For the year ended December 31,
	2015		2014		$ Change		% Change
Net cash provided by operating activities	$	420,104	$	285,539	$	134,565	47.1	%
Net cash used in investing activities		(569,716)		(585,226)		15,510	(2.7)	%
Net cash provided by financing activities		220,372		261,326		(40,954)	(15.7)	%

	December 31,		December 31,
	2015		2014		$ Change		% Change
Cash and cash equivalents	$	203,035	$	132,275	$	70,760	53.5	%
Restricted cash		8,216		11,582		(3,366)	(29.1)	%
Marketable securities		286,668		415,273		(128,605)	(31.0)	%
Total	$	497,919	$	559,130	$	(61,211)	(10.9)	%

Cash Flows from Operating Activities.  Net cash provided from operating activities increased $134.6 million, or 47.1%, during 2015, compared to 2014. The primary factors impacting our cash provided from operating activities include: our net income improved  $142.0 million from 2014 to 2015 and our deferred income taxes increased $73.8 million from 2014 to 2015. Additionally, the combination of the 2014 special items, the 2014 gain on sale of our TRIP shares and the 2015 gain on early debt payoff resulted in a net decrease to cash from operations of $83.6 million.

Cash Flows from Investing Activities.  Net cash used in investing activities decreased $15.5 million, or 2.7% during 2015, compared to 2014. The decrease in cash used in investing activities was primarily due to the net sales of

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marketable securities which increased $57.4 million during 2015, compared to 2014 along with the decrease of other assets of $16.0 million during 2015, compared to 2014.  These changes were partially offset by the acquisition of 25 E175 aircraft along with the related rotable spare assets in 2015, compared to 20 E175 aircraft, one used CRJ700 aircraft and 20 used CRJ200 engines along with the related rotable spare assets purchased in 2014, which in total represented an increase of $57.4 million compared to the aircraft acquisition and related rotable spare aircraft purchases from 2014. No additional aircraft deposits were made but$1.9 millionin aircraft deposits were returned during 2015.

Cash Flows from Financing Activities.  Net cash provided by financing activities decreased $41.0 million, or 15.7%, during 2015, compared to 2014.  The decrease was primarily due to the early payoff and principal payments of long-term debt which increased $168.9 million during 2015, compared to 2014. This decrease was partially offset by the proceeds from the issuance of long‑term debt of $591.9 million associated with 25 E175 aircraft acquired during 2015, compared to the issuance of long‑term debt of $460.6 million associated with 20 E175 aircraft acquired during 2014.  

Sources and Uses of Cash—2014 Compared to 2013

Cash Position and Liquidity.The following table provides a summary of the net cash provided by (used in) our operating, investing and financing activities for the years ended December 31, 2014 and 2013, and our total cash and marketable securities position as of December 31, 2014 and December 31, 2013 (in thousands).

	For the Year ended December 31,
	2014		2013		$ Change	% Change
Net cash provided by operating activities	$	285,539	$	289,890	(4,351)	(1.5)	%
Net cash used in investing activities		(585,226)		(65,961)	(519,265)	787.2	%
Net cash provided by (used in) financing activities		261,326		(187,065)	448,391	(239.7)	%

	December 31,		December 31,
	2014		2013		$ Change	% Change
Cash and cash equivalents	$	132,275	$	170,636	(38,361)	(22.5)	%
Restricted cash		11,582		12,219	(637)	(5.2)	%
Marketable securities		415,273		487,239	(71,966)	(14.8)	%
Total	$	559,130	$	670,094	(110,964)	(16.6)	%

Cash Flows from Operating Activities.Net cash provided by operating activities decreased $4.4 million, or 1.5%, during 2014, compared to 2013. The primary factors impacting our cash provided from operating activities include: our income before income taxes was $58.4 million, excluding special items of $74.8 million, in 2014, compared to income before income taxes of $98.5 million for 2013, which resulted in a decrease in cash flows from operating activities of $40.1 million. This reduction in cash from operating activities was substantially offset by an increase in non-cash depreciation expense of $14.6 million from 2013 to 2014, primarily due to 20 E175 aircraft purchased in 2014; a reduction in capitalized EMB120 engine overhaul events, which are reflected as an operating activity, of $10.8 million from 2013 to 2014 primarily due to a reduction in the number of overhaul events; and other changes in working capital accounts.

Cash Flows from Investing Activities.Net cash used in investing activities increased $519.3 million, or 787.2% during 2014, compared to 2013. The increase in cash used in investing activities was primarily due to the acquisition of 20 E175 aircraft, one used CRJ700 aircraft and related rotable spare assets in 2014, which in total represented an increase of $563.4 million compared to the aircraft acquisition and related rotable spare aircraft purchases from 2013. This amount was offset by $40.0 million in aircraft deposits paid in 2013 associated with the order of 40 E175 aircraft. No additional aircraft deposits were made and no aircraft deposits were received during 2014.

Cash Flows from Financing Activities.Net cash provided by financing activities increased $448.4 million, or 239.7%, during 2014, compared to 2013. The increase was primarily related to proceeds from the issuance of long term debt of $460.6 million associated with 20 E175 aircraft acquired during 2014. The remaining change in cash flows from

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financing activities was primarily due to increased principal payments on long term debt and a reduction in treasury stock purchase activity.

Liquidity and Capital Resources as of December 31, 2015 and 2014

We believe that in the absence of unusual circumstances, the working capital currently available to us, together with our projected cash flows from operations, will be sufficient to meet our present financial requirements, including anticipated expansion, planned capital expenditures, and scheduled lease payments and debt service obligations for at least the next 12 months.

At December 31, 2015, our total capital mix was 47.3% equity and 52.7% long‑term debt, compared to 47.7% equity and 52.3% long‑term debt at December 31, 2014.

As of December 31, 2015 and 2014, SkyWest Airlines had a $25 million line of credit. As of December 31, 2015 and 2014, SkyWest Airlines had no amount outstanding under the facility. The facility is scheduled to expire on April 19, 2016 and has a variable interest rate of Libor plus 3%.

As of December 31, 2015 and 2014, we had $88.9 million and $79.9 million, respectively, in letters of credit and surety bonds outstanding with various banks and surety institutions.

As of December 31, 2015 and 2014, we classified $8.2  million and $11.6 million as restricted cash, respectively, related to our workers compensation policies.

Significant Commitments and Obligations

General

The following table summarizes our commitments and obligations as noted for each of the next five years and thereafter (in thousands):

	Total		2016		2017		2018		2019		2020		Thereafter
Operating lease payments for aircraft and facility obligations	$	1,219,523	$	269,520	$	192,122	$	154,077	$	121,107	$	133,659	$	349,038
Firm aircraft commitments		1,565,401		1,071,430		493,971		—		—		—		—
Interest commitments(A)		343,386		68,561		59,763		50,850		42,515		34,568		87,129
Principal maturities on long-term debt		1,948,803		272,027		248,629		230,681		223,898		183,620		789,948
Total commitments and obligations	$	5,077,113	$	1,681,538	$	994,485	$	435,608	$	387,520	$	351,847	$	1,226,115

(A) At December 31, 2015, we had variable rate notes representing 12.1% of our total long‑term debt. Actual interest commitments will change based on the actual variable interest.

Purchase Commitments and Options

On May 21, 2013, we announced our execution of an agreement with Embraer, S.A. for the purchase of 100 new E175 dual‑class regional jet aircraft. Of the 100 aircraft, 99 are considered firm deliveries and the remaining aircraft is considered conditional until we enter into capacity purchase agreements to operate the aircraft. As of December 31, 2015, we had taken delivery of 45 E175s. We anticipate taking delivery of the remaining 54 E175s covered by the firm order through mid-2017.

We have not historically funded a substantial portion of our aircraft acquisitions with working capital. Rather, we have generally funded our aircraft acquisitions through a combination of manufacturer financing, operating leases and long‑term debt financing. At the time of each aircraft acquisition, we evaluate the financing alternatives available to us, and select one or more of these methods to fund the acquisition. At present, we intend to fund our acquisition of additional aircraft through debt financing. Based on current market conditions and discussions with prospective leasing organizations and financial institutions, we currently believe that we will be able to obtain financing for our committed

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acquisitions, as well as additional aircraft, without materially reducing the amount of working capital available for our operating activities.

Aircraft Lease and Facility Obligations

We also have significant long‑term lease obligations, primarily relating to our aircraft fleet. At December 31, 2015, we had 470 aircraft under lease with remaining terms ranging from less than one year to 10 years. Future minimum lease payments due under all long‑term operating leases were approximately $1.2 billion at December 31, 2015. Assuming a 4.89% discount rate, which is the average rate used to approximate the implicit rates within the applicable aircraft leases, the present value of these lease obligations would have been equal to approximately $1.0 billion at December 31, 2015.

Long‑term Debt Obligations

As of December 31, 2015, we had $1.9 billion of long‑term debt obligations related to the acquisition of CRJ200, CRJ700, CRJ900 and E175 aircraft. The average effective interest rate on those long‑term debt obligations was approximately 3.7% at December 31, 2015.

Under our fixed-fee arrangements, the major airline partners compensate us for our costs of owning or leasing the aircraft on a monthly basis. The aircraft compensation structure varies by agreement, but is intended to cover either our aircraft principal and interest debt service costs, our aircraft depreciation and interest expense or our aircraft lease expense costs while the aircraft is under contract.

Guarantees

We have guaranteed the obligations of SkyWest Airlines under the SkyWest Airlines Delta Connection Agreement and the SkyWest Airlines United Express Agreement for the E175 aircraft. We have also guaranteed the obligations of ExpressJet under the ExpressJet Delta Connection Agreement and the ExpressJet United ERJ Agreement.

ITEM 7A.  QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Aircraft Fuel

In the past, we have not experienced difficulties with fuel availability and we currently expect to be able to obtain fuel at prevailing prices in quantities sufficient to meet our future needs. Pursuant to our contract flying arrangements, United, Delta, Alaska and American have agreed to bear the economic risk of fuel price fluctuations on our contracted flights. We bear the economic risk of fuel price fluctuations on our pro‑rate operations. For each of the years ended December 31, 2015, 2014 and 2013, approximately 4%, 3% and 3% of our ASMs were flown under pro‑rate arrangements. For the years ended December 31, 2015, 2014 and 2013, the average price per gallon of aircraft fuel was $2.09, $3.33 and $3.45, respectively. For illustrative purposes only, we have estimated the impact of the market risk of fuel on our pro‑rate operations using a hypothetical increase of 25% in the price per gallon we purchase. Based on this hypothetical assumption, we would have incurred an additional $19.1 million, $29.1 million and $25.3 million in fuel expense for the years ended December 31, 2015, 2014 and 2013, respectively.

Interest Rates

Our earnings are affected by changes in interest rates due to the amounts of variable rate long‑term debt and the amount of cash and securities held. The interest rates applicable to variable rate notes may rise and increase the amount of interest expense. We would also receive higher amounts of interest income on cash and securities held at the time; however, the market value of our available‑for‑sale securities would likely decline. At December 31, 2015, 2014 and 2013, we had variable rate notes representing 12.1%, 41.3% and 29.5% of our total long‑term debt, respectively. For illustrative purposes only, we have estimated the impact of market risk using a hypothetical increase in interest rates of one percentage point for both variable rate long‑term debt and cash and securities. Based on this hypothetical assumption, we would have incurred an additional $3.5 million in interest expense and received $5.2 million in additional interest income for the year ended December 31, 2015; we would have incurred an additional $5.8 million in interest expense and received $5.5 million in additional interest income for the year ended December 31, 2014; and we would have incurred an additional $4.8 million in interest expense and received $6.7 million in additional interest income for the year ended December 31, 2013. However, under our contractual arrangement with our major partners, the majority of the increase in interest expense would be passed through and recorded as passenger revenue in our

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consolidated statements of comprehensive income (loss). If interest rates were to decline, our major partners would receive the principal benefit of the decline, since interest expense is generally passed through to our major partners, resulting in a reduction to passenger revenue in our consolidated statement of comprehensive income (loss).

We currently intend to finance the acquisition of aircraft through manufacturer financing or long‑term borrowings. Changes in interest rates may impact the actual financing cost associated with these aircraft. To the extent we place these aircraft in service under our code‑share agreements with Delta, United, or other carriers, our code‑share agreements currently provide that reimbursement rates will be adjusted higher or lower to reflect interest rate changes in our aircraft ownership costs.

Auction Rate Securities

We have investments in auction rate securities, which are classified as available for sale securities and reflected at fair value. As of December 31, 2015, we had investments in auction rate securities valued at a total of $2.3 million which were classified as “Other Assets” on our consolidated balance sheet. For a more detailed discussion on auction rate securities, including our methodology for estimating their fair value, see Note 6 to our consolidated financial statements appearing in Item 8 of this Report.

ITEM 8.  FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

The information set forth below should be read together with the “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” appearing elsewhere herein.

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Report of Independent Registered Public Accounting Firm

The Board of Directors and Stockholders

SkyWest, Inc.

We have audited the accompanying consolidated balance sheets of SkyWest, Inc. and subsidiaries as of December 31, 2015 and 2014, and the related consolidated statements of comprehensive income (loss), stockholders’ equity and cash flows for each of the three years in the period ended December 31, 2015. These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on these financial statements based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in all material respects, the consolidated financial position of SkyWest, Inc. and subsidiaries at December 31, 2015 and 2014, and the consolidated results of their operations and their cash flows for each of the three years in the period ended December 31, 2015, in conformity with U.S. generally accepted accounting principles.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), SkyWest, Inc. and subsidiaries’ internal control over financial reporting as of December 31, 2015, based on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework) and our report dated February 26, 2016 expressed an unqualified opinion thereon.

/s/ Ernst & Young LLP

Salt Lake City, Utah

February 26, 2016

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SKYWEST, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

(Dollars in thousands)

ASSETS

	December 31,		December 31,
	2015		2014
CURRENT ASSETS:
Cash and cash equivalents	$	203,035	$	132,275
Marketable securities		286,668		415,273
Restricted cash		8,216		11,582
Income tax receivable		2,871		2,779
Receivables, net		62,162		83,099
Inventories, net		140,312		137,452
Prepaid aircraft rents		195,216		196,348
Deferred tax assets		100,730		94,385
Other current assets		18,360		16,308
Total current assets		1,017,570		1,089,501
PROPERTY AND EQUIPMENT:
Aircraft and rotable spares		5,242,790		4,608,663
Deposits on aircraft		38,150		40,000
Buildings and ground equipment		275,788		274,900
		5,556,728		4,923,563
Less-accumulated depreciation and amortization		(2,085,981)		(1,902,375)
Total property and equipment, net		3,470,747		3,021,188
OTHER ASSETS
Intangible assets, net		10,499		12,748
Non-current prepaid aircraft rents		229,180		201,502
Other assets		74,890		84,989
Total other assets		314,569		299,239
Total assets	$	4,802,886	$	4,409,928

See accompanying notes to consolidated financial statements.

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SKYWEST, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS (Continued)

(Dollars in thousands)

LIABILITIES AND STOCKHOLDERS’ EQUITY

	December 31,		December 31,
	2015		2014
CURRENT LIABILITIES:
Current maturities of long-term debt	$	272,027	$	211,821
Accounts payable		279,864		270,097
Accrued salaries, wages and benefits		138,291		138,902
Accrued aircraft rents		3,226		3,303
Taxes other than income taxes		17,176		17,457
Other current liabilities		40,802		42,775
Total current liabilities		751,386		684,355
OTHER LONG TERM LIABILITIES		56,191		49,625
LONG TERM DEBT, net of current maturities		1,676,776		1,533,990
DEFERRED INCOME TAXES PAYABLE		749,575		669,385
DEFERRED AIRCRAFT CREDITS		62,523		72,227
COMMITMENTS AND CONTINGENCIES (Note 5)
STOCKHOLDERS’ EQUITY:
Preferred stock, 5,000,000 shares authorized; none issued		—		—
Common stock, no par value, 120,000,000 shares authorized; 79,020,371 and 77,951,411 shares issued, respectively		641,643		626,521
Retained earnings		1,275,142		1,165,478
Treasury stock, at cost, 28,015,386 and  26,765,386 shares, respectively		(410,090)		(391,364)
Accumulated other comprehensive income (loss)		(260)		(289)
Total stockholders’ equity		1,506,435		1,400,346
Total liabilities and stockholders’ equity	$	4,802,886	$	4,409,928

See accompanying notes to consolidated financial statements.

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SKYWEST, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

(In thousands, except per share amounts)

	Year Ended December 31,
	2015		2014		2013
OPERATING REVENUES:
Passenger	$	3,030,023	$	3,168,000	$	3,239,525
Ground handling and other		65,540		69,447		58,200
Total operating revenues		3,095,563		3,237,447		3,297,725
OPERATING EXPENSES:
Salaries, wages and benefits		1,203,312		1,258,155		1,211,307
Aircraft maintenance, materials and repairs		604,863		682,773		686,381
Aircraft rentals		273,696		305,334		325,360
Depreciation and amortization		264,507		259,642		245,005
Aircraft fuel		118,124		193,247		193,513
Ground handling services		82,694		123,917		129,119
Special items		—		74,777		—
Station rentals and landing fees		54,167		51,024		114,688
Other, net		259,685		263,730		239,241
Total operating expenses		2,861,048		3,212,599		3,144,614
OPERATING INCOME		234,515		24,848		153,111
OTHER INCOME (EXPENSE):
Interest income		1,997		4,096		3,689
Interest expense		(75,850)		(65,995)		(68,658)
Other, net		33,660		20,708		10,390
Total other expense, net		(40,193)		(41,191)		(54,579)
INCOME (LOSS) BEFORE INCOME TAXES		194,322		(16,343)		98,532
PROVISION FOR INCOME TAXES		76,505		7,811		39,576
NET INCOME (LOSS)	$	117,817	$	(24,154)	$	58,956
BASIC EARNINGS (LOSS) PER SHARE	$	2.31	$	(0.47)	$	1.14
DILUTED EARNINGS (LOSS) PER SHARE	$	2.27	$	(0.47)	$	1.12
Weighted average common shares:
Basic		51,077		51,237		51,688
Diluted		51,825		51,237		52,422
COMPREHENSIVE INCOME (LOSS):
Net income (loss)	$	117,817	$	(24,154)	$	58,956
Proportionate share of equity method investee foreign currency translation adjustment, net of taxes		—		(1,129)		66
Net unrealized appreciation (depreciation) on marketable securities, net of taxes		29		(719)		(13)
TOTAL COMPREHENSIVE INCOME (LOSS)	$	117,846	$	(26,002)	$	59,009

See accompanying notes to consolidated financial statements.

59

SKYWEST, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY

(In thousands)

									Accumulated
									Other
	Common Stock			Retained		Treasury Stock			Comprehensive
	Shares	Amount		Earnings		Shares	Amount		Income (Loss)		Total
Balance at December 31, 2012	76,713	$	609,763	$	1,147,117	(25,280)	$	(371,211)	$	1,506	$	1,387,175
Net income	—		—		58,956	—		—		—		58,956
Proportionate share of other companies foreign currency translation adjustment, net of tax of $8	—		—		—	—		—		66		66
Net unrealized depreciation on marketable securities, net of tax of $43	—		—		—	—		—		(13)		(13)
Exercise of common stock options and issuance of restricted stock	313		835		—	—		—		—		835
Sale of common stock under employee stock purchase plan	300		3,696		—	—		—		—		3,696
Stock based compensation expense related to the issuance of stock options and restricted stock	—		4,363		—	—		—		—		4,363
Tax deficiency from exercise of common stock options	—		(146)		—	—		—		—		(146)
Treasury stock purchases	—		—		—	(816)		(11,739)		—		(11,739)
Cash dividends declared ($0.16 per share)	—		—		(8,254)	—		—		—		(8,254)
Balance at December 31, 2013	77,326		618,511		1,197,819	(26,096)		(382,950)		1,559		1,434,939
Net (loss)	—		—		(24,154)	—		—		—		(24,154)
Proportionate share of other companies foreign currency translation adjustment, net of tax of $678	—		—		—	—		—		(1,129)		(1,129)
Net unrealized depreciation on marketable securities, net of tax of $437	—		—		—	—		—		(719)		(719)
Exercise of common stock options and issuance of restricted stock	330		287		—	—		—		—		287
Sale of common stock under employee stock purchase plan	295		3,752		—	—		—		—		3,752
Stock based compensation expense related to the issuance of stock options and restricted stock	—		5,318		—	—		—		—		5,318
Tax deficiency from exercise of common stock options	—		(1,347)		—	—		—		—		(1,347)
Treasury stock purchases	—		—		—	(669)		(8,414)		—		(8,414)
Cash dividends declared ($0.16 per share)	—		—		(8,187)	—		—		—		(8,187)
Balance at December 31, 2014	77,951		626,521		1,165,478	(26,765)		(391,364)		(289)		1,400,346
Net income	—		—		117,817	—		—		—		117,817
Net unrealized depreciation on marketable securities, net of tax of $18	—		—		—	—		—		29		29
Exercise of common stock options and issuance of restricted stock	815		8,490		—	—		—		—		8,490
Sale of common stock under employee stock purchase plan	254		3,430		—	—		—		—		3,430
Stock based compensation expense related to the issuance of stock options and restricted stock	—		5,368		—	—		—		—		5,368
Tax deficiency from exercise of common stock options	—		(2,166)		—	—		—		—		(2,166)
Treasury stock purchases	—		—		—	(1,250)		(18,726)		—		(18,726)
Cash dividends declared ($0.16 per share)	—		—		(8,153)	—		—		—		(8,153)
Balance at December 31, 2015	79,020	$	641,643	$	1,275,142	(28,015)	$	(410,090)	$	(260)	$	1,506,435

See accompanying notes to consolidated financial statements.

60

SKYWEST, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

(In thousands)

	Year Ended December 31,
	2015		2014		2013
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$	117,817	$	(24,154)	$	58,956
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization		264,507		259,642		245,005
Stock based compensation expense		5,368		5,318		4,363
Loss on sale of property and equipment		—		4,016		—
Gain from equity ownership in TRIP and AirMekong airlines		—		(24,922)		(10,830)
Gain from early extinguishment of debt		(33,660)		—		—
Capitalized Brasilia EMB-120 engine overhauls		—		(18,812)		(29,606)
Special items		—		74,777		—
Net increase in deferred income taxes		73,844		5,054		38,007
Changes in operating assets and liabilities:
Decrease in restricted cash		3,366		637		7,334
Decrease in receivables		21,076		25,540		18,916
Increase in income tax receivable		(92)		(1,939)		(840)
Increase in inventories		(2,860)		(890)		(24,513)
Increase in other current assets and prepaid aircraft rents		(28,598)		(25,985)		(31,578)
Decrease in deferred aircraft credits		(8,635)		(7,672)		(8,432)
Increase in accounts payable and accrued aircraft rents		9,690		5,852		17,594
Increase (decrease) in other current liabilities		(1,719)		9,077		5,514
NET CASH PROVIDED BY OPERATING ACTIVITIES		420,104		285,539		289,890
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of marketable securities		(1,170,439)		(326,964)		(488,564)
Sales of marketable securities		1,299,069		398,148		557,424
Proceeds from the sale of aircraft, property and equipment		10,308		9,473		293
Proceeds from installment payment of equity shares of TRIP		—		17,237		16,658
Acquisition of property and equipment:
Aircraft and rotable spare parts		(710,871)		(653,473)		(102,499)
Deposits on aircraft		—		—		(40,000)
Buildings and ground equipment		(10,405)		(21,966)		(9,502)
Return of deposits on aircraft		1,850		—		—
Decrease (increase) in other assets		10,772		(7,681)		229
NET CASH USED IN INVESTING ACTIVITIES		(569,716)		(585,226)		(65,961)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of long-term debt		591,881		460,600		—
Principal payments on long-term debt		(354,277)		(185,357)		(171,453)
Net proceeds from issuance of common stock		9,754		2,692		4,385
Purchase of treasury stock		(18,726)		(8,414)		(11,739)
Payment of cash dividends		(8,260)		(8,195)		(8,258)
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES		220,372		261,326		(187,065)
Increase (decrease) in cash and cash equivalents		70,760		(38,361)		36,864
Cash and cash equivalents at beginning of year		132,275		170,636		133,772
CASH AND CASH EQUIVALENTS AT END OF YEAR		203,035		132,275		170,636
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash paid during the year for:
Interest, net of capitalized amounts	$	80,657	$	67,763	$	71,323
Income taxes	$	5,104	$	2,066	$	3,678

See accompanying notes to consolidated financial statements.

61

SKYWEST, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

DECEMBER 31, 2015

(1) Nature of Operations and Summary of Significant Accounting Policies

SkyWest, Inc. (the “Company”), through its subsidiaries, SkyWest Airlines, Inc. (“SkyWest Airlines”) and ExpressJet Airlines, Inc. (“ExpressJet”), operates the largest regional airline in the United States. As of December 31, 2015, SkyWest and ExpressJet offered scheduled passenger and air freight service with approximately 3,400 total daily departures to different destinations in the United States, Canada, Mexico and the Caribbean. Additionally, the Company provides ground handling services for other airlines throughout its system. As of December 31, 2015, the Company had a combined fleet of 702 aircraft consisting of the following:

	CRJ200	CRJ700	CRJ900	ERJ135	ERJ145	E175	EMB120	Total
United	83	70	—	5	166	40	—	364
Delta	111	60	64	—	—	—	—	235
American	31	—	—	—	16	—	—	47
Alaska	—	9	—	—	—	5	—	14
Aircraft in scheduled service	225	139	64	5	182	45	—	660
Subleased to an un-affiliated entity	2	—	—	—	—	—	—	2
Other*	10	—	—	4	—	—	26	40
Total	237	139	64	9	182	45	26	702

*Other aircraft consisted of leased aircraft removed from service that were in the process of being returned to the lessor and owned aircraft removed from service that were held for sale.

For the year ended December 31, 2015, approximately 57.5% of the Company’s aggregate capacity was operated for United, approximately 33.2% was operated for Delta, approximately 6.4% was operated for American, including the flights operated for US Airways, and approximately 2.9% was operated for Alaska.  

SkyWest Airlines has been a code-share partner with Delta since 1987 and United since 1997. SkyWest Airlines has been a code-share partner with Alaska since 2011 and American since 2012. As of December 31, 2015, SkyWest Airlines operated as a Delta Connection carrier in Salt Lake City and Minneapolis, a United Express carrier in Los Angeles, San Francisco, Denver, Houston, Chicago and the Pacific Northwest, an Alaska carrier in the Pacific Northwest and an American carrier in Los Angeles and Phoenix.

On November 17, 2011, the Company’s wholly-owned subsidiaries, Atlantic Southeast Airlines, Inc. and ExpressJet Airlines, Inc., consolidated their operations under a single operating certificate, and on December 31, 2012, Atlantic Southeast Airlines, Inc. and ExpressJet Airlines, Inc. were merged, with the surviving corporation named ExpressJet Airlines, Inc. (the “ExpressJet Combination”). In the following Notes to Consolidated Financial Statements, “Atlantic Southeast” refers to Atlantic Southeast Airlines, Inc. for periods prior to the ExpressJet Combination, “ExpressJet Delaware” refers to ExpressJet Airlines, Inc., a Delaware corporation, for periods prior to the ExpressJet Combination, and “ExpressJet” refers to ExpressJet Airlines, Inc., the Utah corporation resulting from the combination of Atlantic Southeast and ExpressJet Delaware, for periods subsequent to the ExpressJet Combination. Atlantic Southeast had been a code-share partner with Delta in Atlanta since 1984. As of December 31, 2015, ExpressJet operated as a Delta Connection carrier in Atlanta and Detroit, a United Express carrier in Chicago (O’Hare), Cleveland, Newark and Houston and an American carrier in Dallas.

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Basis of Presentation

The Company’s consolidated financial statements include the accounts of SkyWest, Inc. and its subsidiaries, including SkyWest Airlines and ExpressJet, with all inter‑company transactions and balances having been eliminated.

In preparing the accompanying consolidated financial statements, the Company has reviewed, as determined necessary by the Company’s management, events that have occurred after December 31, 2015, through the filing date of the Company’s annual report with the U.S. Securities and Exchange Commission.

Use of Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Cash and Cash Equivalents

The Company considers all highly liquid investments with an original maturity of three months or less to be cash equivalents. The Company classified $8.2 million and $11.6 million of cash as restricted cash collateralizing letters of credit under the Company’s workers’ compensation insurance policy and classified it accordingly in the consolidated balance sheets as of December 31, 2015 and 2014, respectively.

Marketable Securities

The Company’s investments in marketable debt and equity securities are deemed by management to be available-for-sale and are reported at fair market value with the net unrealized appreciation (depreciation) reported as a component of accumulated other comprehensive income (loss) in stockholders’ equity. At the time of sale, any realized appreciation or depreciation, calculated by the specific identification method, is recognized in other income and expense. The Company’s position in marketable securities as of December 31, 2015 and 2014 was as follows (in thousands):

			Gross unrealized		Gross unrealized
At December 31, 2015	Amortized Cost		holding gains		holding losses		Fair market value
Total cash and cash equivalents	$	203,035	$	—	$	—	$	203,035
Available-for-sale securities:
Bond and bond funds	$	286,857	$	—	$	(220)	$	286,637
Asset backed securities		30		1		—		31
Total available-for-sale securities	$	286,887	$	1	$	(220)	$	286,668
Total cash and cash equivalents and available for sale securities	$	489,922	$	1	$	(220)	$	489,703

			Gross unrealized			Gross unrealized
At December 31, 2014	Amortized Cost		holding gains		holding losses		Fair market value
Total cash and cash equivalents	$	132,275	$	—	$	—	$	132,275
Available-for-sale securities:
Bond and bond funds	$	410,618	$	9	$	(464)	$	410,163
Asset backed securities		5,108		3		(1)		5,110
Total available-for-sale securities	$	415,726	$	12	$	(465)	$	415,273
Total cash and cash equivalents and available for sale securities	$	548,001	$	12	$	(465)	$	547,548

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Marketable securities had the following maturities as of December 31, 2015 (in thousands):

Maturities	Amount
Year 2016	$	231,298
Years 2017 through 2020		55,370

As of December 31, 2015 and 2014, the Company had classified $286.7 million and $415.3 million of marketable securities, respectively, as short‑term since it had the intent to maintain a liquid portfolio and the ability to redeem the securities within one year. The Company has classified approximately $2.3 million and $2.3 million of investments as non‑current and has identified them as “Other assets” in the Company’s consolidated balance sheet as of December 31, 2015 and 2014, respectively (see Note 6).

Inventories

Inventories include expendable parts, fuel and supplies and are valued at cost (FIFO basis) less an allowance for obsolescence based on historical results and management’s expectations of future operations. Expendable inventory parts are charged to expense as used. An obsolescence allowance for flight equipment expendable parts is accrued based on estimated lives of the corresponding fleet types and salvage values. The inventory allowance as of December 31, 2015 and 2014 was $13.9 million and $11.6 million, respectively. These allowances are based on management estimates, which can be modified based on future changes in circumstances.

Property and Equipment

Property and equipment are stated at cost and depreciated over their useful lives to their estimated residual values using the straight‑line method as follows:

Assets	Depreciable Life	Residual Value
New Aircraft	18 years	30	%
Used Aircraft and rotable spares	3 – 10 years	0 - 30	%
Ground equipment	5 – 10 years	0	%
Office equipment	5 – 7 years	0	%
Leasehold improvements	Shorter of 15 years or lease term	0	%
Buildings	20 – 39.5 years	0	%

Impairment of Long-Lived Assets

As of December 31, 2015, the Company had approximately $5.6 billion of property and equipment and related assets. Additionally, as of December 31, 2015, the Company had approximately $10.5 million in intangible assets. In accounting for these long‑lived and intangible assets, the Company makes estimates about the expected useful lives of the assets, the expected residual values of certain of these assets, and the potential for impairment based on the fair value of the assets and the cash flows they generate. On September 7, 2005, the Company acquired all of the issued and outstanding capital stock of Atlantic Southeast and recorded an intangible asset for specifically identifiable contracts of approximately $33.7 million relating to the acquisition. The intangible asset is being amortized over fifteen years under the straight‑line method. As of December 31, 2015 and 2014, the Company had $23.3 million and $21.0 million in accumulated amortization expense, attributable to the acquisition, respectively. Factors indicating potential impairment include, but are not limited to, significant decreases in the market value of the long‑lived assets, a significant change in the condition of the long‑lived assets and operating cash flow losses associated with the use of the long‑lived assets. On a periodic basis, the Company evaluates whether impairment indicators are present. When considering whether or not impairment of long‑lived assets exists, the Company groups similar assets together at the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets and liabilities and compare the undiscounted cash flows for each asset group to the net carrying amount of the assets supporting the asset group. Asset groupings are done at the fleet or contract level. 

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The Company did not recognize any impairment charges of long lived assets during 2015 or 2013.

In 2014, the Company had impairments on several long-lived assets relating to Embraer Brasilia EMB 120 (“EMB120”) turboprop aircraft, ERJ145 aircraft type specific assets and an aircraft paint facility located in Saltillo, Mexico. See Note 8, Special items, for the impairment charges recorded during the year ended December 31, 2014 related to the EMB120 long-lived assets, ERJ145 long-lived assets, Saltillo, Mexico paint facility and related assets.

Capitalized Interest

Interest is capitalized on aircraft purchase deposits as a portion of the cost of the asset and is depreciated over the estimated useful life of the asset. During the years ended December 31, 2015, 2014 and 2013, the Company capitalized interest costs of approximately $2.2 million, $1.8 million, and $1.2 million, respectively.

Maintenance

The Company operates under a FAA approved continuous inspection and maintenance program. The Company uses the direct expense method of accounting for its regional jet engine overhauls wherein the expense is recorded when the overhaul event occurs. The Company has engine services agreements with third-party vendors to provide long-term engine services covering the scheduled and unscheduled repairs for certain of its Bombardier CRJ700 Regional Jets (“CRJ700s”), Embraer  ERJ145 regional jet aircraft and Embraer E-175 jet (“E175”) aircraft. Under the terms of the agreements, the Company pays a fixed dollar amount per engine hour flown on a monthly basis and the third-party vendors will assume the responsibility to repair the engines at no additional cost to the Company, subject to certain specified exclusions. Maintenance costs under these contracts are recognized when the engine hour is flown pursuant to the terms of each contract.

The Company used the “deferral method” of accounting for its EMB120 turboprop aircraft engine overhauls, wherein the overhaul costs were capitalized and depreciated to the next estimated overhaul event, or remaining lease term for leased aircraft, whichever was shorter.  In 2015, the Company removed all of its EMB120 aircraft from service.

The costs of maintenance for airframe and avionics components, landing gear and normal recurring maintenance are expensed as incurred.

Passenger and Ground Handling Revenues

The Company recognizes passenger and ground handling revenues when the service is provided under its code-share agreements. Under the Company’s fixed fee arrangements (referred to as “fixed-fee arrangements, “contract flying” or “capacity purchase agreements”) with Delta, United, American and Alaska, the major airline generally pays the Company a fixed fee for each departure, flight or block time incurred, and an amount per aircraft in service each month with additional incentives based on completion of flights and on time performance.  The major airline partner also directly reimburses the Company for certain direct expenses incurred under the fixed-fee arrangement such as fuel expense and landing fee expenses.  Under the fixed-fee arrangements, revenue is earned when each flight is completed. 

Under a Revenue Sharing Arrangement (referred to as a “revenue-sharing” or “pro rate” arrangement), the major airline and regional airline negotiate a passenger fare proration formula, pursuant to which the regional airline receives a percentage of the ticket revenues for those passengers traveling for one portion of their trip on the regional airline and the other portion of their trip on the major airline.  Revenue is recognized under the Company’s pro rate flying agreements when each flight is completed based upon the portion of the pro rate passenger fare the Company anticipates that it will receive for each completed flight.

Other ancillary revenues commonly associated with airlines such as baggage fee revenue, ticket change fee revenue and the marketing component of the sale of mileage credits are retained by the Company’s major airline partners on flights that the Company operates under its code-share agreements.

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In the event that the contractual rates under the agreements have not been finalized at quarterly or annual financial statement dates, the Company records revenues based on the lower of prior period’s approved rates, as adjusted to reflect any contract negotiations and the Company’s estimate of rates that will be implemented in accordance with revenue recognition guidelines.  In the event the Company has a reimbursement dispute with a major partner, the Company evaluates the dispute under its established revenue recognition criteria and, provided the revenue recognition criteria have been met, the Company recognizes revenue based on management’s estimate of the resolution of the dispute.

In several of the Company’s agreements, the Company is eligible for incentive compensation upon the achievement of certain performance criteria. The incentives are defined in the agreements and are being measured and determined on a monthly, quarterly or semi-annual basis. At the end of each period, the Company calculates the incentives achieved during that period and recognizes revenue accordingly.

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The following summarizes the significant provisions of each code share agreement the Company has with each major partner:

Delta Connection Agreements

	Number of		Pass through costs
	aircraft under	Term / Termination	or costs paid directly
Agreement	agreements	Dates	by major partner
SkyWest Airlines	• CRJ 200 - 48	• The contract is scheduled to expire on an individual aircraft basis commencing in 2016	• Fuel
Delta Connection	• CRJ 700 - 19	• The final aircraft is scheduled to expire in 2022	• Engine Maintenance
Agreement (fixed-fee arrangement)	• CRJ 900 - 36	• The average remaining term of the aircraft under contract is 3.8 years	• Landing fees
		• Upon expiration, aircraft may be renewed or extended	• Station Rents, Deice
			• Insurance
ExpressJet Delta	• CRJ 200 - 42	• The contract is scheduled to expire on an individual aircraft basis commencing in 2016	• Fuel
Connection	• CRJ 700 - 41	• The final aircraft is scheduled to expire in 2022	• Engine Maintenance
Agreement (fixed-fee arrangement)	• CRJ 900 - 28	• The average remaining term of the aircraft under contract is 3.7 years	• Landing fees
		• Upon expiration, aircraft may be renewed or extended	• Station Rents, Deice
			• Insurance
SkyWest Airlines	• CRJ 200 - 21	• Terminable with 30 days' notice	• None
Pro-rate Agreement (revenue-sharing agreement)

United Express Agreements

			Pass through costs
	Number of		or costs paid
	aircraft under	Term / Termination	directly by major
Agreement	agreements	Dates	partner
SkyWest Airlines	• CRJ 200 - 57	• The contract is scheduled to expire on an individual aircraft basis commencing in 2016	• Fuel
United Express	• CRJ 700 - 70	• The final aircraft is scheduled to expire in 2027	• Landing fees
Agreements (fixed-fee	• E175 - 40	• The average remaining term of the aircraft under contract is 4.3 years	• Station Rents, Deice
arrangement)		• Upon expiration, aircraft may be renewed or extended	• Insurance
ExpressJet United ERJ	• ERJ 135 - 5	• The contract is scheduled to expire on an individual aircraft basis commencing in 2016	• Fuel
Agreement (fixed-fee arrangement)	• ERJ 145 - 166	• The final aircraft is scheduled to expire in 2017	• Engine Maintenance
		• The average remaining term of the aircraft under contract is 1.9 years	• Landing fees
		• Upon expiration, aircraft may be renewed or extended	• Station Rents, Deice
			• Insurance
SkyWest Airlines United	• CRJ 200 - 26	• Terminable with 120 days' notice	• None
Express Pro-rate Agreement (revenue-sharing arrangement)

Alaska Capacity Purchase Agreement

			Pass through costs
	Number of		or costs paid
	aircraft under	Term / Termination	directly by major
Agreement	agreements	Dates	partner
SkyWest Airlines	• CRJ 700 - 9	• The contract is scheduled to expire on an individual aircraft basis commencing in 2016	• Fuel
Alaska Agreement	• E175 - 5	• The final aircraft is scheduled to expire in 2028	• Landing fees
(fixed-fee arrangement)		• Upon expiration, aircraft may be renewed or extended	• Station Rents, Deice
			• Insurance

67

American Agreement

			Pass through costs
	Number of		or costs paid
	aircraft under	Term / Termination	directly by major
Agreement	agreements	Dates	partner
SkyWest Airlines	• CRJ 200 - 12	• Scheduled to expire in 2016	• Fuel
American Agreement		• Upon expiration, aircraft may be renewed or extended	• Landing fees
(fixed-fee agreement)			• Station Rents, Deice
			• Insurance
SkyWest Airlines	• CRJ 200 - 5	• Terminable with 120 days' notice	• None
American Pro-rate
Agreement (revenue-
sharing agreement)
ExpressJet American	• CRJ 200 - 11	• Scheduled to expire in 2017	• Fuel
Agreement (fixed-fee	• ERJ 145 - 16	• Upon expiration, aircraft may be renewed or extended	• Landing fees
agreement)			• Station Rents, Deice
			• Insurance
ExpressJet American Pro-rate	• CRJ 200 - 3	• Terminable with 120 days' notice	• None
Agreement (revenue-sharing agreement)

As of December 31, 2015, the Company anticipated placing an additional 25 E175 aircraft with United, ten additional E175 aircraft with Alaska and 19 E175 aircraft with Delta. The delivery dates for the new aircraft are expected to take place from January 2016 to June 2017.

Under the Company’s fixed-fee arrangements, the major airline partners compensate the Company for its costs of owning or leasing the aircraft on a monthly basis. The aircraft compensation structure varies by agreement, but is intended to cover either the Company’s aircraft principal and interest debt service costs, its aircraft depreciation and interest expense or its aircraft lease expense costs while the aircraft is under contract. Under the Company’s ExpressJet United ERJ Agreement and ExpressJet American ERJ145 Agreement, the major partner provides the aircraft to the Company for a nominal amount.

The Company’s passenger and ground handling revenues could be impacted by a number of factors, including changes to the Company’s code‑share agreements with Delta, United, Alaska or American, contract modifications resulting from contract re‑negotiations, the Company’s ability to earn incentive payments contemplated under the Company’s code‑share agreements and settlement of reimbursement disputes with the Company’s major partners.

Under the Company’s fixed-fee agreements with Delta, United, Alaska, and American, the compensation structure generally consists of a combination of agreed‑upon rates for operating flights and direct reimbursement for other certain costs associated with operating the aircraft. A portion of the Company’s contract flying compensation is designed to reimburse the Company for certain aircraft ownership costs. The Company has concluded that a component of its revenue under these agreements is rental income, inasmuch as the agreements identify the “right of use” of a specific type and number of aircraft over a stated period of time. The amounts deemed to be rental income under the agreements for the years ended December 31, 2015, 2014 and 2013 were $504.9 million, $497.0 million and $500.2 million, respectively. These amounts are reflected as passenger revenues on the Company’s consolidated statements of comprehensive income (loss). The Company has not separately stated aircraft rental income and aircraft rental expense in the consolidated statement of comprehensive income (loss) since the use of the aircraft is not a separate activity of the total service provided.

Deferred Aircraft Credits

The Company accounts for incentives provided by aircraft manufacturers as deferred credits. The deferred credits related to leased aircraft are amortized on a straight‑line basis as a reduction to rent expense over the lease term. Credits related to owned aircraft reduce the purchase price of the aircraft, which has the effect of amortizing the credits on a straight‑line basis as a reduction in depreciation expense over the life of the related aircraft. The incentives are credits that may be used to purchase spare parts and pay for training and other expenses.

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Income Taxes

The Company recognizes a liability or asset for the deferred tax consequences of all temporary differences between the tax basis of assets and liabilities and their reported amounts in the consolidated financial statements that are expected to result in taxable or deductible amounts in future years when the reported amounts of the assets and liabilities are recovered or settled.

Net Income (Loss) Per Common Share

Basic net income (loss) per common share (“Basic EPS”) excludes dilution and is computed by dividing net income (loss) by the weighted average number of common shares outstanding during the period. Diluted net income (loss) per common share (“Diluted EPS”) reflects the potential dilution that could occur if stock options or other contracts to issue common stock were exercised or converted into common stock. The computation of Diluted EPS does not assume exercise or conversion of securities that would have an anti‑dilutive effect on net income (loss) per common share. During the years ended December 31, 2015, 2014 and 2013, 505,000, 3,191,000 and 3,072,000 shares reserved for issuance upon the exercise of outstanding options were excluded from the computation of Diluted EPS respectively, as their inclusion would be anti‑dilutive.

The calculation of the weighted average number of common shares outstanding for Basic EPS and Diluted EPS are as follows for the years ended December 31, 2015, 2014 and 2013 (in thousands):

	Year Ended December 31,
	2015		2014		2013
Numerator:
Net Income (Loss)	$	117,817	$	(24,154)	$	58,956
Denominator:
Denominator for basic earnings per-share weighted average shares		51,077		51,237		51,688
Dilution due to stock options and restricted stock		748		—		734
Denominator for diluted earnings per-share weighted average shares		51,825		51,237		52,422
Basic earnings (loss) per-share	$	2.31	$	(0.47)	$	1.14
Diluted earnings (loss) per-share	$	2.27	$	(0.47)	$	1.12

Comprehensive Income (Loss)

Comprehensive income (loss) includes charges and credits to stockholders’ equity that are not the result of transactions with the Company’s shareholders. Also, comprehensive income (loss) consisted of net income (loss) plus changes in unrealized appreciation (depreciation) on marketable securities and unrealized gain (loss) on foreign currency translation adjustment related to the Company’s equity investment in Trip Linhas Aereas, a regional airline operating in Brazil (“TRIP”) and Mekong Aviation Joint Stock Company, an airline operating in Vietnam (“Air Mekong”).

Fair Value of Financial Instruments

The carrying amounts reported in the consolidated balance sheets for receivables and accounts payable approximate fair values because of the immediate or short‑term maturity of these financial instruments. Marketable securities are reported at fair value based on market quoted prices in the consolidated balance sheets. If quoted prices in active markets are no longer available, the Company has estimated the fair values of these securities utilizing a discounted cash flow analysis as of December 31, 2015. These analyses consider, among other items, the collateralization underlying the security investments, the creditworthiness of the counterparty, the timing of expected future cash flows, and the expectation of the next time the security is expected to have a successful auction. The fair value of the Company’s long‑term debt is estimated based on current rates offered to the Company for similar debt and was approximately $1,939.8 million as of December 31, 2015, as compared to the carrying amount of $1,948.8 million

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as of December 31, 2015. The Company’s fair value of long‑term debt as of December 31, 2014 was $1,813.1 million as compared to the carrying amount of $1,745.8 million as of December 31, 2014.

Segment Reporting

Generally accepted accounting principles require disclosures related to components of a company for which separate financial information is available to, and regularly evaluated by, the Company’s chief operating decision maker when deciding how to allocate resources and in assessing performance. The Company’s three operating segments consist of the operations conducted by SkyWest Airlines and ExpressJet, as well as other activities. Information pertaining to the Company’s reportable segments is presented in Note 2, Segment Reporting.  

Recent Accounting Pronouncements

In May 2014, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update No. 2014-09, “Revenue from Contracts with Customers”   (“ASU No. 2014-09”).  Under ASU No. 2014-09, revenue is recognized at the time a good or service is transferred to a customer for the amount of consideration received for that specific good or service. In July 2015, the FASB deferred the effective date of ASU No. 2014-09 to January 1, 2018.  The FASB also proposed permitting early adoption of the standard, but not before January 1, 2017.  Entities may use a full retrospective approach or report the cumulative effect as of the date of adoption. The Company’s management is currently evaluating the impact the adoption of ASU No. 2014-09 is anticipated to have on the Company’s consolidated financial statements.

In April 2015, the FASB issued Accounting Standards Update No. 2015-03, “Simplifying the Presentation of Debt Issuance Costs” (“ASU No. 2015-03”).  In August 2015, ASU No. 2015-03 was amended to modify existing guidance to require the presentation of debt issuance costs in the balance sheet as a deduction from the carrying amount of the related debt liability instead of as a deferred charge. It is effective for annual reporting periods beginning after December 15, 2015, but early adoption is permitted. The Company anticipates reclassifying the unamortized debt issuance costs and present debt net of those unamortized costs on its balance sheet upon adoption of ASU No. 2015-03. As of December 31, 2015, the Company had $20.9 million in unamortized debt issuance costs.

In November 2015, the FASB issued Accounting Standards Update 2015-17, Income Taxes (Topic 740): Balance Sheet Classification of Deferred Taxes (“ASU No. 2015-17”).  The standard requires that deferred tax liabilities and assets be classified as noncurrent in a classified statement of financial position.  The current requirement that deferred tax liabilities and assets of a tax-paying component of an entity be offset and presented as a single amount is not affected by ASU No. 2015-17.  ASU No. 2015-17 is effective for annual periods beginning after December 15, 2016, and interim periods within those annual periods.  The Company’s management is currently evaluating the impact the adoption of ASU No. 2015-17 is anticipated to have on the Company’s consolidated financial statements.

In February 2016, the FASB issued ASU 2016-02, Leases (“ASU 2016-02”). The standard amends the existing accounting standards for lease accounting, including requiring lessees to recognize most leases on their balance sheets and making targeted changes to lessor accounting. ASU 2016-02 will be effective beginning in the first quarter of 2019. Early adoption of ASU 2016-02 is permitted. The new leases standard requires a modified retrospective transition approach for all leases existing at, or entered into after, the date of initial application, with an option to use certain transition relief. The Company’s management is currently evaluating the impact of adopting ASU 2016-02 on the Company’s consolidated financial statements.

Immaterial error correction to consolidated balance sheet

In connection with the preparation of the Company’s consolidated financial statements for the year ended December 31, 2015, the Company determined that certain non-current prepaid aircraft rents previously reported were improperly presented as current on the Company’s consolidated balance sheet at December 31, 2014. As a result, current prepaid aircraft rents, as previously reported, were overstated by $201.5 million and non-current prepaid aircraft rents were understated by $201.5 million. The Company concluded that the error was not material to the consolidated balance sheet, but has elected to correct the error in the accompanying 2014 consolidated financial statements for consistency of

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presentation. The classification error had no effect on the consolidated statements of comprehensive income (loss), stockholders’ equity, or cash flows for the year ended December 31, 2014.

(2) Segment Reporting

Generally accepted accounting principles require disclosures related to components of a company for which separate financial information is available to, and regularly evaluated by, the Company’s chief operating decision maker when deciding how to allocate resources and in assessing performance.

The Company’s three operating segments consist of the operations of SkyWest Airlines, ExpressJet and SkyWest Leasing activities. Corporate overhead expense incurred by the Company is allocated to the operating expenses of SkyWest Airlines and ExpressJet.

During the fourth quarter of 2015, due to the increase in acquired E175 aircraft and the related aircraft debt financing, the Company’s chief operating decision maker started to analyze the flight operations of the Company’s E175 aircraft separately from the acquisition, ownership and financing costs and related revenue.  Because of this change, the “SkyWest Leasing” segment includes revenue attributed to the Company’s E175 ownership cost earned under the applicable fixed-fee flying contracts, and the depreciation and interest expense of the Company’s E175 aircraft.  The “SkyWest Leasing” segment’s total assets and capital expenditures include the acquired E175 aircraft.  The “SkyWest Leasing” segment additionally includes the activity of two CRJ200 aircraft leased to a third party.

As a result of the change in segmentation, prior periods have been recast to conform to the current presentation. The Company reclassified $15.0 million of operating revenue, $8.5 million of depreciation expense, $5.0 million of interest expense, $1.6 million of segment profit, $527.0 million of total assets and $535.5 million of capital expenditures (including non-cash) from the “SkyWest Airlines” segment to the “SkyWest Leasing” segment for the year ended December 31, 2014 to reflect the respective E175 activity in the “SkyWest Leasing” segment for 2014.

During the fourth quarter of 2015, the Company resolved a contract matter with one of its major partners that resulted in a $7.9 million reduction to revenue.  This reduction is reflected in the SkyWest Leasing segment as this amount related to an aircraft financing matter for the year ended December 31, 2015.

The following represents the Company’s segment data for the years ended December 31, 2015, 2014 and 2013 (in thousands).

		Year Ended December 31, 2015
		SkyWest
		Airlines		ExpressJet		SkyWest Leasing		Consolidated
Operating revenues	$	1,848,363	$	1,169,923	$	77,277	$	3,095,563
Operating expense		1,630,200		1,192,070		38,778		2,861,048
Depreciation and amortization expense		141,189		86,382		36,936		264,507
Interest expense		36,141		12,091		27,618		75,850
Segment profit (loss) (1)		182,022		(34,238)		10,881		158,665
Identifiable intangible assets, other than goodwill		—		10,499		—		10,499
Total assets		2,319,295		1,332,995		1,150,596		4,802,886
Capital expenditures (including non-cash)		30,897		24,679		659,513		715,089

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		Year Ended December 31, 2014
		SkyWest
		Airlines		ExpressJet		SkyWest Leasing		Consolidated
Operating revenues	$	1,873,675	$	1,346,859	$	16,913	$	3,237,447
Operating expense		1,758,145		1,446,050		8,404		3,212,599
Depreciation and amortization expense		162,699		88,459		8,484		259,642
Interest expense		39,452		18,754		7,789		65,995
Segment profit (loss) (1)		76,078		(117,945)		720		(41,147)
Identifiable intangible assets, other than goodwill		—		12,748		—		12,748
Total assets		2,492,828		1,390,129		526,971		4,409,928
Capital expenditures (including non-cash)		137,678		23,790		535,455		696,923

		Year Ended December 31, 2013
		SkyWest
		Airlines		ExpressJet		SkyWest Leasing		Consolidated
Operating revenues	$	1,827,568	$	1,466,341	$	3,816	$	3,297,725
Operating expense		1,644,129		1,494,302		6,183		3,144,614
Depreciation and amortization expense		155,667		89,338		—		245,005
Interest expense		43,920		21,034		3,704		68,658
Segment profit (loss) (1)		139,519		(48,995)		(6,071)		84,453
Identifiable intangible assets, other than goodwill		—		14,998		—		14,998
Total assets		2,532,431		1,700,788		—		4,233,219
Capital expenditures (including non-cash)		103,387		38,657		—		142,044

(1) Segment profit is operating income less interest expense

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(3) Long‑term Debt

Long‑term debt consisted of the following as of December 31, 2015 and 2014 (in thousands):

	December 31,		December 31,
	2015		2014
Notes payable to banks, due in semi-annual installments, variable interest based on LIBOR, or with interest rates ranging from 1.29% to 2.22% through 2016 to 2020, secured by aircraft	$	108,348	$	174,159
Notes payable to a financing company, due in semi-annual installments, variable interest based on LIBOR, or with interest rates ranging from 1.76% to 3.25% through 2017 to 2021, secured by aircraft		217,341		350,177
Notes payable to banks, due in semi-annual installments plus interest at 6.06% to 6.51% through 2021, secured by aircraft		108,069		129,201
Notes payable to a financing company, due in semi-annual installments plus interest at 5.78% to 6.23% through 2017, secured by aircraft		17,208		25,090
Notes payable to banks, due in monthly installments plus interest of 2.68% to 6.86% through 2025, secured by aircraft		479,170		572,446
Notes payable to banks, due in monthly installments, plus interest at 6.05% through 2020, secured by aircraft		11,304		13,551
Notes payable to banks, due in monthly installments, plus interest at 3.10% through 2019, secured by aircraft		4,615		5,909
Notes payable to banks, due in quarterly installments plus interest at 3.39% to 4.02% through 2027, secured by aircraft		966,156		446,724
Notes payable to banks, due in monthly installments, plus interest based on LIBOR at 3.21% to 3.33% through 2017, secured by aircraft		14,538		28,554
Notes payable to banks due in monthly installments, interest at 3.30% through 2019, secured by spare engines		22,054		—
Long-term debt	$	1,948,803	$	1,745,811
Less current maturities		(272,027)		(211,821)
Long-term debt, net of current maturities	$	1,676,776	$	1,533,990

During the year ended December 31, 2015, the Company acquired 25 new E175 aircraft. Approximately 85% of the aircraft purchase price was financed through the issuance of debt and 15% of the aircraft purchase price was paid with cash.

As of December 31, 2015, the Company had $1.9 billion of long‑term debt obligations primarily related to the acquisition of CRJ200, CRJ700, CRJ900 and E175 aircraft. The average effective interest rate on the debt related to those long-term debt obligations was approximately 3.7% at December 31, 2015.

During the year ended December 31, 2015, the Company used $110.8 million in cash to pay off $145.4 million in debt. The payment resulted in a pre-tax gain of $33.7 million, net of the write off of deferred loan costs associated with the debt, reflected as other income in the consolidated statements of comprehensive income (loss), of which the Company used $94 million in cash to pay off $128 million in debt, resulting in a pre-tax gain of $33 million during the fourth quarter of 2015.

The aggregate amounts of principal maturities of long‑term debt as of December 31, 2015 were as follows (in thousands):

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2016	$	272,027
2017		248,629
2018		230,681
2019		223,898
2020		183,620
Thereafter		789,948
	$	1,948,803

As of December 31, 2015 and 2014, SkyWest Airlines had a $25 million line of credit. As of December 31, 2015 and 2014, SkyWest Airlines had no amount outstanding under the facility. However, at December 31, 2015 and 2014 the Company had $6 million and $5 million, respectively, in letters of credit issued under the facility which reduced the amount available under the facility to $19 million and $20 million, respectively. The facility expires on April 19, 2016 and has a variable interest rate of Libor plus 3.0%.

As of December 31, 2015 and 2014, the Company had $88.9 million and $79.9 million, respectively, in letters of credit and surety bonds outstanding with various banks and surety institutions.

(4) Income Taxes

The provision for income taxes includes the following components (in thousands):

	Year ended December 31,
	2015		2014		2013
Current tax provision (benefit):
Federal	$	3,801	$	(176)	$	1,767
State		1,035		838		343
Foreign		—		2,081		—
		4,836		2,743		2,110
Deferred tax provision (benefit):
Federal		66,430		4,697		34,728
State		5,239		371		2,738
		71,669		5,068		37,466
Provision for income taxes	$	76,505	$	7,811	$	39,576

The following is a reconciliation between the statutory federal income tax rate of 35% and the effective rate which is derived by dividing the provision for income taxes by income (loss) before for income taxes (in thousands):

	Year ended December 31,
	2015		2014		2013
Computed provision (benefit) for income taxes at the statutory rate	$	68,013	$	(5,720)	$	34,486
Increase (decrease) in income taxes resulting from:
State income tax provision (benefit), net of federal income tax benefit		5,416		(107)		2,867
Non-deductible expenses		3,641		3,865		3,257
Valuation allowance changes affecting the provision for income taxes		(899)		5,981		1,430
Foreign income taxes, net of federal & state benefit		—		1,973
Other, net		334		1,819		(2,464)
Provision for income taxes	$	76,505	$	7,811	$	39,576

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For the year ended December 31, 2015, the Company released a $0.9 million valuation allowance against certain deferred tax assets primarily associated with ExpressJet state net operating losses with a limited carry forward period.  The release of the valuation allowance was based on the Company's gain resulting from the early retirement of certain long term debt which reduced the amount of deferred tax assets that were anticipated to expire before the deferred tax assets may be utilized. 

For the year ended December 31, 2014, the Company recorded a $6.0 million valuation allowance against certain deferred tax assets primarily associated with ExpressJet state net operating losses with a limited carry forward period.  The valuation allowance was based on the Company’s assessment of deferred tax assets that are anticipated to expire before the deferred tax assets may be utilized.  The Company additionally recorded a $2.0 million foreign tax expense associated with Brazilian withholding tax on the sale of the Company's equity ownership in TRIP.

For the year ended December 31, 2013, the Company recorded a $1.4 million valuation allowance against certain deferred tax assets primarily associated with ExpressJet state net operating losses with a limited carry forward period.  The valuation allowance was based on the Company’s assessment at December 31, 2013 of deferred tax assets that were anticipated to expire before the deferred tax assets may be utilized.

The significant components of the Company’s net deferred tax assets and liabilities as of December 31, 2015 and 2014 are as follows (in thousands):

	As of December 31,
	2015		2014
Deferred tax assets:
Intangible Asset	$	30,369	$	34,819
Accrued benefits		47,514		43,853
Net operating loss carryforward		82,211		152,361
AMT credit carryforward		21,391		17,590
Deferred aircraft credits		55,544		53,797
Accrued reserves and other		24,575		27,008
Total deferred tax assets		261,604		329,428
Valuation allowance		(8,126)		(9,025)
Deferred tax liabilities:
Accelerated depreciation		(902,322)		(895,405)
Total deferred tax liabilities		(902,322)		(895,405)
Net deferred tax liability	$	(648,844)	$	(575,002)

The Company’s deferred tax liabilities were primarily generated through accelerated depreciation, combined with shorter depreciable tax lives, allowed under the IRS tax code for purchased aircraft and support equipment compared to the Company’s US GAAP depreciation policy for such assets using the straight-line method (see note 1 Nature of Operations and Summary of Significant Accounting Policies).

The Company's valuation allowance is related to certain deferred tax assets with a limited carry forward period.  The Company does not anticipate utilizing these deferred tax assets prior to the lapse of the carry forward period.

At December 31, 2015 and 2014, the Company had federal net operating losses,net of valuation allowance, of approximately $189.0 million and $379.3 million and state net operating losses of approximately $352.2 million and $452.2 million, respectively.  The estimated effective tax rate applicable to the state and federal net operating losses net of valuation allowances as of December 31, 2015 was 35.0% and 2.6%, respectively.  The Company anticipates that the federal and state net operating losses will start to expire in 2026 and 2017, respectively.  The Company has recorded a valuation allowance for state net operating losses the Company anticipates will expire before the benefit will be realized due to the limited carry forward periods.  As of December 31, 2015 and 2014, the Company also had an alternative minimum tax credit of approximately $21.4 million and $17.6 million, respectively, which does not expire.

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(5) Commitments and Contingencies

Lease Obligations

The Company leases 470 aircraft, as well as airport facilities, office space, and various other property and equipment under non‑cancelable operating leases which are generally on a long‑term net rent basis where the Company pays taxes, maintenance, insurance and certain other operating expenses applicable to the leased property. The following table summarizes future minimum rental payments required under operating leases that have non‑cancelable lease terms as of December 31, 2015 (in thousands):

Year ended December 31,
2016	$	269,520
2017		192,122
2018		154,077
2019		121,107
2020		133,659
Thereafter		349,038
	$	1,219,523

The majority of the Company’s leased aircraft are owned and leased through trusts whose sole purpose is to purchase, finance and lease these aircraft to the Company; therefore, they meet the criteria of  avariable interest entity. However, since these are single owner trusts in which the Company does not participate, the Company is not considered at risk for losses and is not considered the primary beneficiary. As a result, based on the current rules, the Company is not required to consolidate any of these trusts or any other entities in applying the accounting guidance. The Company’s management believes that the Company’s maximum exposure under these leases is the remaining lease payments.

The Company’s leveraged lease agreements typically obligate the Company to indemnify the equity/owner participant against liabilities that may arise due to changes in benefits from tax ownership of the respective leased aircraft. The terms of these contracts range up to 11 years. The Company did not accrue any liability relating to the indemnification to the equity/owner participant because of management’s assessment that the probability of this occurring is remote.

During the year ended December 31, 2015, the Company built a maintenance facility in Boise, Idaho and entered into a sale lease-back agreement with the city of Boise.  The sales price of the facility was $18.5 million and the operating lease expires in 2040.  The future lease obligations for the Boise maintenance facility are included in the above future minimum rental payments schedule.

Total rental expense for non-cancelable aircraft operating leases was approximately $273.7 million, $305.3 million and $325.4 million for the years ended December 31, 2015, 2014 and 2013, respectively. The minimum rental expense for airport station rents was approximately $35.1 million, $29.0 million and $35.1 million for the years ended December 31, 2015, 2014 and 2013, respectively.

Self‑insurance

The Company self‑insures a portion of its potential losses from claims related to workers’ compensation, environmental issues, property damage, medical insurance for employees and general liability. Losses are accrued based on an estimate of the ultimate aggregate liability for claims incurred, using standard industry practices and the Company’s actual experience. Actual results could differ from these estimates.

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Legal Matters

The Company is subject to certain legal actions which it considers routine to its business activities. As of December 31, 2015, management believed, after consultation with legal counsel, that the ultimate outcome of such legal matters was not likely to have a material adverse effect on the Company’s financial position, liquidity or results of operations.

Concentration Risk and Significant Customers

The Company requires no collateral from its major partners or customers but monitors the financial condition of its major partners. Under the majority of the Company’s code-share agreements, the Company receives weekly payments from its major code share partners that approximates a significant percentage of the compensation earned for such period.  Additionally, the Company provides certain customer service functions at multiple airports for various airlines and the Company maintains an allowance for doubtful accounts receivable based upon expected collectability of all accounts receivable. The Company’s allowance for doubtful accounts totaled $187,300 and $326,600 as of December 31, 2015 and 2014, respectively. For the years ended December 31, 2015, 2014 and 2013, the Company’s contractual relationships with Delta and United combined accounted for approximately 86.9%, 88.7% and 91.6%, respectively of the Company’s total revenues.

Employees Under Collective Bargaining Agreements

As of December 31, 2015, the Company had approximately 18,300 full‑time equivalent employees. Approximately 38.0% of these employees were represented by unions, including the following employee groups. Notwithstanding the completion of the ExpressJet Combination, ExpressJet’s employee groups continue to be represented by those unions who provided representation prior to the ExpressJet Combination.

Accordingly, the following table refers to ExpressJet’s employee groups based upon their union affiliations prior to the ExpressJet Combination.

	Approximate
	Number of
	Active Employees		Status of
Employee Group	Represented	Representatives	Agreement
Atlantic Southeast Pilots	1,491	Air Line Pilots Association International	Amendable February 2018
Atlantic Southeast Flight Attendants	1,031	International Association of Machinists and Aerospace Workers	Amendable
Atlantic Southeast Flight Controllers	36	Transport Workers Union of America	Amendable
Atlantic Southeast Mechanics	364	International Brotherhood of Teamsters	Amendable
Atlantic Southeast Stock Clerks	73	International Brotherhood of Teamsters	Amendable
ExpressJet Delaware Pilots	2,107	Air Line Pilots Association International	Amendable February 2018
ExpressJet Delaware Flight Attendants	993	International Association of Machinists and Aerospace Workers	Amendable
ExpressJet Delaware Mechanics	711	International Brotherhood of Teamsters	Amendable
ExpressJet Delaware Dispatchers	53	Transport Workers Union of America	Amendable
ExpressJet Delaware Stock Clerks	96	International Brotherhood of Teamsters	Amendable

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In February 2016, the Atlantic Southeast Pilots and the ExpressJet Delaware Pilots ratified a two-year contract extension to their respective labor agreements.

(6) Fair Value Measurements

The Company holds certain assets that are required to be measured at fair value in accordance with United States GAAP. The Company determined fair value of these assets based on the following three levels of inputs:

Level 1—Quoted prices in active markets for identical assets or liabilities.

Level 2—Observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Some of the Company’s marketable securities primarily utilize broker quotes in a non‑active market for valuation of these securities.

Level 3—Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities, therefore requiring an entity to develop its own assumptions.

As of December 31, 2015, the Company held certain assets that are required to be measured at fair value on a recurring basis. Assets measured at fair value on a recurring basis are summarized below (in thousands):

	Fair Value Measurements as of December 31, 2015
	Total			Level 1		Level 2		Level 3
Marketable Securities
Bonds	$	286,637		$	—	$	286,637	$	—
Commercial paper		31			—		31		—
Asset backed securities	$	286,668		$	—	$	286,668	$	—
Cash, Cash Equivalents and Restricted Cash		211,251			211,251		—		—
Other Assets(a)		2,321	(a)		—		—		2,321
Total Assets Measured at Fair Value	$	500,240		$	211,251	$	286,668	$	2,321

	Fair Value Measurements as of December 31, 2014
	Total		Level 1		Level 2		Level 3
Marketable Securities
Bonds	$	410,163	$	—	$	410,163	$	—
Commercial paper		5,110		—		5,110		—
Asset backed securities		415,273		—		415,273		—
Cash, Cash Equivalents and Restricted Cash		143,857		143,857		—		—
Other Assets(a)		2,309		—		—		2,309
Total Assets Measured at Fair Value	$	561,439	$	143,857	$	415,273	$	2,309

(a) Auction rate securities included in long-term “Other assets” in the Consolidated Balance Sheet

Based on market conditions, the Company uses a discounted cash flow valuation methodology for auction rate securities. Accordingly, for purposes of the foregoing consolidated financial statements, these securities were categorized as Level 3 securities. The Company’s “Marketable Securities” classified as Level 2 primarily utilize broker quotes in a non‑active market for valuation of these securities.

No significant transfers between Level 1, Level 2 and Level 3 occurred during the year ended December 31, 2015. The Company’s policy regarding the recording of transfers between levels is to record any such transfers at the end of the reporting period.

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The following table presents the Company’s assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) at December 31, 2015 (in thousands):

Fair Value Measurements Using Significant Unobservable Inputs

(Level 3)

	Auction Rate
	Securities
Balance at January 1, 2015	$	2,309
Total realized and unrealized gains or (losses)
Included in earnings		—
Included in other comprehensive income		12
Transferred out		—
Settlements		—
Balance at December 31, 2015	$	2,321

(7) Investment in Other Companies

In 2014, the Company completed the sale of its 20% interest in  TRIP to Trip investments Ltda (“Trip Investimentos”) for $42 million.The Company recorded a gain from the sale of its TRIP shares of $24.9 million during the year ended December 31, 2014, which is reflected in Other Income in the Consolidated Statements of Comprehensive Income (Loss).

In 2013, the Company sold its 30% ownership interest in Mekong Aviation Joint Stock Company, an airline operating in Vietnam (“Air Mekong”).The Company recognized a gain from the sale of its Air Mekong shares of $5 million during the year ended December 31, 2013, which is reflected in other income in the Consolidated Statements of Comprehensive Income (Loss). Additionally, in 2013, the Company terminated its sub‑lease of certain aircraft to Air Mekong and recognized $5.1 million of other income during the year ended December 31, 2013 primarily due to the recognition of collected and realized contingent rent payments, net of the write‑off of certain maintenance deposits.

(8) Special Items

The following table summarizes the components of the Company's special items, for the year ended December 31, 2015, 2014 and 2013 (in thousands):

	Year ended December 31,
	2015		2014		2013
Special items:
EMB120 aircraft related items 1	$	—	$	57,046	$	—
ERJ145 aircraft related items 2		—		12,931		—
Paint facility and related items 3		—		4,800		—
Total special items	$	—	$	74,777	$	—

(1) Consists primarily of impairment charges to write-down owned EMB120 aircraft including capitalized engine overhaul costs, and related long-lived assets to their estimated fair value write down of $48.3 million and accrued obligations on leased aircraft and related costs of $8.8 million. The estimated fair value of the long-lived assets was based on third party valuations for similar assets which is considered an unobservable input (Level 3) under the fair value hierarchy.In November 2014, the Company approved a plan to discontinue operating the EMB120 aircraft by the end of the second quarter of 2015.  The decision to discontinue use of the EMB120 aircraft included management’s assessment of the need for pilots to operate upcoming deliveries for the E175 aircraft, the incremental training cost to hire new pilots compared to retraining existing EMB120 pilots to operate CRJ or E175 aircraft, and the uncertainty related to the number of qualified pilots available for hire, combined with the overall age and

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increased operating costs of the Company’s EMB120 fleet.  These special items are reflected in the SkyWest Airlines operating expenses under Note 2 Segment Reporting.

(2) Consists primarily of impairment charges to write-down certain ERJ145 long-lived assets, which primarily consisted of spare engines and ERJ145 spare aircraft parts, to their estimated fair value of $11.4 million  and accrued obligations on leased aircraft and related costs of $1.5 million.  The estimated fair value of the long-lived assets was based on third party valuations for similar assets which is considered an unobservable input (Level 3) under the fair value hierarchy.   In November 2014, the Company entered into an amended and restated contract with United that accelerated the lease terminations of certain ERJ145 aircraft and accelerated the termination date of the Company’s flying contract to operate the ERJ145s with United from the year 2020 to 2017.  The reduced term shortened the anticipated useful life of the ERJ145 long-lived assets which triggered the impairment evaluation.   These special items are reflected in the ExpressJet operating expenses under Note 2 Segment Reporting.

(3) Consists primarily of the write-down of assets associated with the disposition of the Company’s paint facility located in Saltillo, Mexico, which was sold during the year ended December 31, 2014.  These special items are reflected in the ExpressJet operating expenses under Note 2 Segment Reporting.

(9) Capital Transactions

Preferred Stock

The Company is authorized to issue 5,000,000 shares of preferred stock in one or more series without shareholder approval. No shares of preferred stock are presently outstanding. The Company’s Board of Directors is authorized, without any further action by the shareholders of the Company, to (i) divide the preferred stock into series; (ii) designate each such series; (iii) fix and determine dividend rights; (iv) determine the price, terms and conditions on which shares of preferred stock may be redeemed; (v) determine the amount payable to holders of preferred stock in the event of voluntary or involuntary liquidation; (vi) determine any sinking fund provisions; and (vii) establish any conversion privileges.

Stock Compensation

On May 4, 2010, the Company’s shareholders approved the adoption of the SkyWest Inc. 2010 Long‑Term Incentive Plan, which provides for the issuance of up to 5,150,000 shares of common stock to the Company’s directors, employees, consultants and advisors (the “2010 Incentive Plan”). The 2010 Incentive Plan provides for awards in the form of options to acquire shares of common stock, stock appreciation rights, restricted stock grants, restricted stock units and performance awards. The 2010 Incentive Plan is administered by the Compensation Committee of the Company’s Board of Directors (the “Compensation Committee”), which is authorized to designate option grants as either incentive stock options for income tax purposes (“ISO”) or non-statutory stock options ISOs are granted at not less than 100% of the market value of the underlying common stock on the date of grant. Non‑statutory stock options are granted at a price as determined by the Compensation Committee.

In prior years, the Company adopted three stock option plans: the Executive Stock Incentive Plan (the “Executive Plan”), the 2001 Allshare Stock Option Plan (the “Allshare Plan”) and SkyWest Inc. Long‑Term Incentive Plan (the “2006 Incentive Plan”). As of December 31, 2015, options to purchase an aggregate 76,923 shares of the Company’s common stock remained outstanding under the Executive Plan, the Allshare Plan and the 2006 Incentive Plan. There are no additional shares of common stock available for issuance under these plans.

The fair value of stock options awarded under the Company’s stock option plans has been estimated as of the grant date using the Black‑Scholes option pricing model. The Company uses historical data to estimate option exercises and employee termination in the option pricing model. The expected term of options granted is derived from the output of the option pricing model and represents the period of time that options granted are expected to be outstanding. The expected volatilities are based on the historical volatility of the Company’s traded stock and other factors. The Company granted 267,433,  255,503 and 173,560 stock options to employees under the 2010 Incentive Plan during the years ended

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December 31, 2015, 2014 and 2013, respectively. Stock options granted in 2015 vest in three equal installments over a three-year period. Stock options granted in 2014 and 2013 have three-year vesting periods. The following table shows the assumptions used and weighted average fair value for grants in the years ended December 31, 2015, 2014 and 2013.

	2015			2014			2013
Expected annual dividend rate		1.18	%		1.32	%		1.21	%
Risk-free interest rate		1.62	%		1.50	%		0.92	%
Average expected life (years)		5.7			5.8			6.0
Expected volatility of common stock		0.401			0.431			0.446
Forfeiture rate		0.0	%		0.0	%		0.0	%
Weighted average fair value of option grants	$	4.75		$	4.47		$	5.04

The Company recorded share‑based compensation expense only for those options that are expected to vest. The estimated fair value of the stock options is amortized over the vesting period of the respective stock option grants.

During the year ended December 31, 2015, the Company granted 408,163shares of restricted stock units to certain Company’s employees under the 2010 Incentive Plan. The restricted stock units granted during the year ended December 31, 2015 have a three‑year vesting period, during which the recipient must remain employed with the Company or its subsidiaries. The weighted average fair value of the restricted stock units the date of grants made during the year ended December 31, 2015 was $13.57 per share.

The following table summarizes the activity of restricted stock unitsgranted to certain Company employees as of December 31, 2015, 2014 and 2013:

			Weighted-Average
			Grant-Date Fair
	Number of Shares		Value
Non-vested shares outstanding at December 31, 2012	698,885	$	14.21
Granted	282,651		13.43
Vested	(202,012)		14.51
Cancelled	(45,933)		13.69
Non-vested shares outstanding at December 31, 2013	733,591		13.79
Granted	312,749		12.00
Vested	(284,891)		14.74
Cancelled	(38,273)		12.83
Non-vested shares outstanding at December 31, 2014	723,176		12.70
Granted	408,163		13.57
Vested	(215,856)		13.06
Cancelled	(106,184)		13.52
Non-vested shares outstanding at December 31, 2015	809,299		13.13

During the year ended December 31, 2015, the Compensation Committee granted performance share units, which are performance based restricted stock units, to certain Company employees with three-year performance based financial metrics that the Company must meet before those awards may be earned and the performance period for those grants ends December 31, 2017. The Compensation Committee will determine the achievement of performance results and corresponding vesting of performance shares for each performance period. At the end of each performance period,

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the number of shares awarded can range from 0% to 150% of the original granted amount, depending on the performance against the pre-established targets.

The following table summarizes the activity of performance share units  granted at target as of December 31, 2015.

			Weighted-Average
			Grant-Date Fair
	Number of Shares		Value
Non-vested shares outstanding at December 31, 2014	—	$	—
Granted	222,583		13.61
Vested	—		—
Cancelled	(19,754)		13.51
Non-vested shares outstanding at December 31, 2015	202,829	$	13.62

During the years ended December 31, 2015, 2014 and 2013 the Company granted fully‑vested shares of common stock to the Company’s directors in the amounts of 36,950, 44,631 and 29,453 shares,  respectively,with a weighted average grant‑date fair value of $14.05, $12.10, and $13.24, respectively.

During the year ended December 31, 2015, 2014 and 2013, the Company recorded equity‑based compensation expense of $5.4 million, $5.3 million and $4.4 million, respectively.

As of December 31, 2015, the Company had $8.7 million of total unrecognized compensation cost related to non‑vested stock options and non‑vested restricted stock grants. Total unrecognized compensation cost will be adjusted for future changes in estimated forfeitures. The Company expects to recognize this cost over a weighted average period of 2.0 years.

Options are exercisable for a period as defined by the Compensation Committee on the date granted; however, no stock option will be exercisable before six months have elapsed from the date it is granted and no stock option shall be exercisable after seven years from the date of grant. The following table summarizes the stock option activity for all of the Company’s plans for the years ended December 31, 2015, 2014 and 2013:

	2015							2014			2013
				Weighted
		Weighted		Average			Aggregate		Weighted			Weighted
		Average		Remaining			Intrinsic		Average			Average
	Number of	Exercise		Contractual			Value	Number of	Exercise		Number of	Exercise
	Options	Price		Term			($000)	Options	Price		Options	Price
Outstanding at beginning of year	2,888,074	$	16.46	1.7	years	$	—	3,407,575	$	17.99	3,653,859	$	18.44
Granted	267,433		13.63					255,503		11.96	173,560		13.24
Exercised	(544,917)		14.68					(6,701)		12.10	(75,080)		10.91
Cancelled	(1,546,161)		18.53					(768,303)		6.81	(344,764)		20.67
Outstanding at end of year	1,064,429		13.64	3.7	years	$	5,726.7	2,888,074		16.46	3,407,575		17.99
Exercisable at December 31, 2015	484,747		14.46	1.7	years	$	2,212.5
Exercisable at December 31, 2014	2,324,336		17.39	0.8	years		—

The total intrinsic value of options to acquire shares of the Company’s common stock that were exercised during the years ended December 31, 2015, 2014 and 2013 was $1,800,000, $30,000 and $172,000, respectively.

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The following table summarizes the status of the Company’s non‑vested stock options as of December 31, 2015:

		Weighted-Average
	Number of	Grant-Date
	Shares	Fair Value
Non-vested shares at beginning of year	563,738	$	4.56
Granted	267,433		4.92
Vested	(187,403)		4.43
Cancelled	(64,086)		4.65
Non-vested shares at end of year	579,682	$	4.75

The following table summarizes information about the Company’s stock options outstanding at December 31, 2015:

			Options Outstanding					Options Exercisable
				Weighted Average
			Number	Remaining		Weighted Average		Number	Weighted Average
Range of Exercise Prices			Outstanding	Contractual Life		Exercise Price		Exercisable	Exercise Price
$8	to	$11	19,458	5.4	years	$	11.10	—	$	—
$12	to	$14	859,595	4.1	years		13.31	305,331		13.90
$15	to	$18	185,376	1.4	years		15.43	179,416		15.64
$8	to	$18	1,064,429	3.7	years	$	13.64	484,747	$	14.46

Taxes

The Company’s treatment ofstock option grants of non‑ qualified options, restricted stock units and performance shares results in the creation of a deferred tax asset, which is a temporary difference, until the time that the option is exercised or the restrictions lapse.

(10) Retirement Plans and Employee Stock Purchase Plans

SkyWest Retirement Plan

The Company sponsors the SkyWest, Inc. Employees’ Retirement Plan (the “SkyWest Plan”). Employees who have completed 90 days of service and are at least 18 years of age are eligible for participation in the SkyWest Plan. Employees may elect to make contributions to the SkyWest Plan. Generally, the Company matches 100% of such contributions up to 2%, 4% or 6% of the individual participant’s compensation, based upon length of service for non-pilot employees and up to 3%, 5% or 7% of the individual participant’s compensation, based upon length of service for pilot employees. Additionally, a discretionary contribution may be made by the Company. The Company’s combined contributions to the SkyWest Plan were $20.4 million, $19.3 million and $18.3 million for the years ended December 31, 2015, 2014 and 2013, respectively.

ExpressJet and Atlantic Southeast Retirement Plans

ExpressJet (formerly Atlantic Southeast) sponsors the Atlantic Southeast Airlines, Inc. Investment Savings Plan (the “Atlantic Southeast Plan”). Employees who have completed 90 days of service and are 18 years of age are eligible for participation in the Atlantic Southeast Plan. Employees may elect to make contributions to the Atlantic Southeast Plan; however, ExpressJet limits the amount of company match at 6% of each participant’s total compensation, except for those with ten or more years of service whose company match is limited to 8% of total compensation. Additionally, ExpressJet matches the individual participant’s contributions from 20% to 75%, depending on the length of the participant’s service. Additionally, participants are 100% vested in their elective deferrals and rollover amounts and from 10% to 100% vested in company matching contributions based on length of service.

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Effective December 31, 2002, ExpressJet Delaware adopted the ExpressJet Airlines, Inc. 401(k) Savings Plan (the “ExpressJet Retirement Plan”). Substantially all of ExpressJet Delaware’s domestic employees were covered by this plan at the time of the ExpressJet Combination. Effective January 1, 2009, the ExpressJet Retirement Plan was amended such that certain matching payment amounts have been reduced or eliminated depending on the terms of the collective bargaining unit or work group, as applicable.

ExpressJet’s contribution to the Atlantic Southeast and the ExpressJet Retirement Plans was $24.0 million, $27.2 million and $26.7 million for the years ended December 31, 2015, 2014 and 2013, respectively.

Employee Stock Purchase Plans

In May 2009, the Company’s Board of Directors approved the SkyWest, Inc. 2009 Employee Stock Purchase Plan (the “2009 Stock Purchase Plan”). All employees who have completed 90 days of employment with the Company or one of its subsidiaries are eligible to participate in the 2009 Stock Purchase Plan, except employees who own five percent or more of the Company’s common stock. The 2009 Stock Purchase Plan enables employees to purchase shares of the Company’s common stock at a five percent discount, through payroll deductions. Employees can contribute up to 15% of their base pay, not to exceed $25,000 each calendar year, for the purchase of shares. Shares are purchased semi-annually at a five percent discount based on the end of the period price. Employees can terminate their participation in the 2009 Stock Purchase Plan at any time upon written notice.

The following table summarizes purchases made under the 2009 Employee Stock Purchase Plans during the years ended December 31, 2015, 2014 and 2013:

	Year ended December 31,
	2015		2014		2013
Number of shares purchased		254,098		295,035		299,786
Average price of shares purchased	$	13.50	$	12.72	$	12.33

The 2009 Stock Purchase Plan is a non‑compensatory plan under the accounting guidance. Therefore, no compensation expense was recorded for the years ended December 31, 2015, 2014 and 2013.

(11) Stock Repurchase

The Company’s Board of Directors has previously authorized the repurchase of the Company’s common stock in the public market. During the years ended December 31, 2015, 2014 and 2013, the Company repurchased 1.3 million, 0.7 million, 0.8 million shares of common stock for approximately $18.7 million, $8.4 million and $11.7 million, respectively at a weighted average price per share of $14.98,  $12.54 and $14.40, respectively. As of December 31, 2015, the Company’s Board of Directors has not authorized additional repurchases of the Company’s common stock.

(12) Related‑Party Transactions

The Company’s Chairman of the Board and former Chief Executive Officer, serves on the Board of Directors of Zions Bancorporation (“Zions”). The Company maintains a line of credit (see Note 3) and certain bank accounts with Zions. Zions is an equity participant in leveraged leases on one CRJ200, two CRJ700 and four EMB120 aircraft leased by the Company’s subsidiaries. Zions also refinanced five CRJ200 and two CRJ700 aircraft in 2012 for terms of three to four years, becoming the debtor on these aircraft. Zions also serves as the Company’s transfer agent. The Company’s cash balance in the accounts held at Zions as of December 31, 2015 and 2014 was $65.0 million and $90.6 million, respectively.

During the year ended December 31, 2015, the Company purchased $363,910 of spare aircraft parts from an entity affiliated with a director of the Company.

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(13) Quarterly Financial Data (Unaudited)

Unaudited summarized financial data by quarter for 2015 and 2014 is as follows (in thousands, except per share data):

	Year ended December 31, 2015
	First		Second		Third		Fourth
	Quarter		Quarter		Quarter		Quarter		Year
Operating revenues	$	760,398	$	788,417	$	794,004	$	752,744	$	3,095,563
Operating income		34,075		69,932		78,296		52,212		234,515
Net income		9,620		31,475		36,268		40,454		117,817
Net income per common share:
Basic		0.19		0.61		0.72		0.80		2.31
Diluted		0.18		0.61		0.71		0.78		2.27
Weighted average common shares:
Basic:		51,457		51,357		50,616		50,880		51,077
Diluted:		52,392		51,971		51,282		51,657		51,825

	Year ended December 31, 2014
	First		Second		Third		Fourth
	Quarter		Quarter		Quarter		Quarter		Year
Operating revenues	$	772,386	$	816,574	$	834,633	$	813,854	$	3,237,447
Operating income		(27,774)		13,244		59,080		(19,702)		24,848
Net income (loss)		(22,887)		(14,737)		41,338		(27,868)		(24,154)
Net income (loss) per common share:
Basic		(0.44)		(0.29)		0.81		(0.54)		(0.47)
Diluted		(0.44)		(0.29)		0.79		(0.54)		(0.47)
Weighted average common shares:
Basic:		51,467		51,183		51,127		51,174		51,237
Diluted:		51,467		51,183		52,036		51,174		51,237

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ITEM 9.  CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE

None.

ITEM 9A.  CONTROLS AND PROCEDURES

Disclosure Controls and Procedures

Our management, including our Chief Executive Officer and Chief Financial Officer, performed an evaluation of our disclosure controls and procedures, which have been designed to ensure that information we are required to disclose in the reports we file or submit under the Exchange Act is recorded, processed, summarized and reportedaccurately and within the time periods specified in the Commission rules and forms. Our management, including our Chief Executive Officer and Chief Financial Officer, concluded that, as of December 31, 2015, those controls and procedures were effective to ensure that information we are required to disclose in the reports we file or submit under the Exchange Act is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

Changes in Internal Control

During the most recently completed fiscal quarter, we did not make any changes in our internal control over financial reporting that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Management’s Annual Report on Internal Control Over Financial Reporting

Management is responsible for establishing and maintaining adequate internal control over financial reporting, as such term is defined in Rules13a‑15(f) and 15d‑15(f) under the Exchange Act. Our internal control over financial reporting is designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with accounting principles generally accepted in the United States of America.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies may deteriorate.

Management conducted an evaluation of the effectiveness of our internal control over financial reporting as of December 31, 2015 using the criteria issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO) in Internal Control—Integrated Framework (2013). Based on that evaluation, management believes that our internal control over financial reporting was effective as of December 31, 2015.

The effectiveness of our internal control over financial reporting as of December 31, 2015, has been audited by Ernst & Young LLP (“Ernst & Young”), the independent registered public accounting firm who also has audited our Consolidated Financial Statements included in this Report. Ernst & Young’s report on our internal control over financial reporting appears on the following page.

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Report of Independent Registered Public Accounting Firm

The Board of Directors and Stockholders

SkyWest, Inc.

We have audited SkyWest, Inc. and subsidiaries’ internal control over financial reporting as of December 31, 2015, based on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework) (the COSO criteria). SkyWest, Inc. and subsidiaries’ management is responsible for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting included in the accompanying Management’s Annual Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the company’s internal control over financial reporting based on our audit.

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

In our opinion, SkyWest, Inc. and subsidiaries maintained, in all material respects, effective internal control over financial reporting as of December 31, 2015, based on the COSO criteria.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated balance sheets of SkyWest, Inc. and subsidiaries as of December 31, 2015 and 2014, and the related consolidated statements of comprehensive income (loss), stockholders’ equity, and cash flows for each of the three years in the period ended December 31, 2015 of SkyWest, Inc. and subsidiaries and our report dated February 26, 2016 expressed an unqualified opinion thereon.

/s/ Ernst & Young LLP

Salt Lake City, Utah

February 26, 2016

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ITEM 9B.  OTHER INFORMATION

None.

PART III

Items 10, 11, 12, 13 and 14 in Part III of this Report are incorporated herein by reference to our definitive proxy statement for our 2015 Annual Meeting of Shareholders scheduled for May 3, 2016. We intend to file our definitive proxy statement with the SEC not later than 120 days after December 31, 2015, pursuant to Regulation 14A of the Exchange Act.

		Headings in Proxy Statement
ITEM 10.	DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE	“Election of Directors,” “Executive Officers,” “Corporate Governance,” “Meetings and Committees of the Board” and “Section 16(a) Beneficial Ownership Reporting Compliance”
ITEM 11.	EXECUTIVE COMPENSATION	“Corporate Governance,” “Meetings and Committees of the Board,” “Compensation Discussion and Analysis,” “Compensation Committee Report,” “Executive Compensation,” “Director Compensation” and “Director Summary Compensation Table”
ITEM 12.	SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS	“Security Ownership of Certain Beneficial Owners”
ITEM 13.	CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS	“Certain Relationships and Related Transactions”
ITEM 14.	PRINCIPAL ACCOUNTANT FEES AND SERVICES	“Audit and Finance Committee Disclosure” and “Fees Paid to Independent Registered Public Accounting Firm”

PART IV

ITEM 15.  EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

(a)Documents Filed:

1.Financial Statements:  Reports of Independent Auditors, Consolidated Balance Sheets as of December 31, 2015 and 2014, Consolidated Statements of Comprehensive Income (Loss) for the years ended December 31, 2015, 2014 and 2013, Consolidated Statements of Cash Flows for the year ended December 31, 2015, 2014 and 2013, Consolidated Statements of Stockholders’ Equity for the years ended December 31, 2015, 2014 and 2013 and Notes to Consolidated Financial Statements.

2.Financial Statement Schedule.  The following consolidated financial statement schedule of our company is included in this Item 15.

•Report of independent auditors on financial statement schedule

•Schedule II—Valuation and qualifying accounts

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All other schedules for which provision is made in the applicable accounting regulations of the Commission are not required under the related instructions or are not applicable, and therefore have been omitted.

(b)Exhibits

Number	Exhibit	Incorporated by Reference
3.1	Restated Articles of Incorporation	(1)
3.2	Amended and Restated Bylaws	(12)
4.1	Specimen of Common Stock Certificate	(2)
10.1	Amended and Restated Delta Connection Agreement, dated as of September 8, 2005, between SkyWest Airlines, Inc. and Delta Air Lines, Inc.	(3)
10.2	Second Amended and Restated Delta Connection Agreement, dated as of September 8, 2005, between Atlantic Southeast Airlines, Inc. and Delta Air Lines, Inc.	(3)
10.3	United Express Agreement dated July 31, 2003, between United Air Lines, Inc., and SkyWest Airlines, Inc.	(4)
10.4	Stock Option Agreement dated January 28, 1987 between Delta Air Lines, Inc. and SkyWest, Inc.	(5)
10.5	Lease Agreement dated December 1,1989 between Salt Lake City Corporation and SkyWest Airlines, Inc.	(6)
10.6	Master Purchase Agreement dated November 7, 2000 between Bombardier, Inc. and SkyWest Airlines, Inc.	(7)
10.7	Supplement to Master Purchase Agreement dated November 7, 2000 between Bombardier, Inc. and SkyWest Airlines, Inc.	(4)
10.8	SkyWest Inc. 2006 Employee Stock Purchase Plan	(8)
10.9	First Amendment to SkyWest, Inc. 2006 Employee Stock Purchase Plan	(9)
10.10	SkyWest, Inc. 2002 Deferred Compensation Plan, as amended and restated effective January 1, 2008	(9)
10.11	First Amendment to the Restated SkyWest, Inc. 2002 Deferred Compensation Plan	(9)
10.12	SkyWest, Inc. 2006 Long‑Term Incentive Plan	(9)
10.13	First Amendment to the SkyWest, Inc. 2006 Long‑Term Incentive Plan	(9)
10.13(a)	Second Amendment to the SkyWest, Inc. 2006 Long‑Term Incentive Plan	(9)
10.14	SkyWest, Inc. 2009 Employee Stock Purchase Plan	(9)
10.15	Capacity Purchase Agreement, dated November 12, 2010, by and among ExpressJet Airlines, Inc. and Continental Airlines, Inc.	(10)
10.16	Aircraft Purchase Agreement, dated December 7, 2012, between Mitsubishi Aircraft Corporation and SkyWest Inc.	(11)
10.17	Letter Agreement dated December 7, 2012, between Mitsubishi Aircraft Corporation and SkyWest, Inc.	(11)
10.18	Purchase Agreement COM0028‑13 between Embraer S.A. and SkyWest Inc. dated February 15, 2013	(13)
10.19	Purchase Agreement COM0344‑13 between Embraer S.A. and SkyWest Inc. dated June 17, 2013	(13)
10.20	Form of Indemnification Agreement executed by and between SkyWest, Inc. and each of Jerry C. Atkin, W. Steve Albrecht, J. Ralph Atkin, Margaret Billson, Henry J. Eyring, Robert G. Sarver, Steven F. Udvar‑Hazy, James L. Welch, Bradford R. Rich, Michael J. Kraupp, Eric J. Woodward, Russell A. Childs and Bradford R. Holt, as of August 6, 2013	(13)

89

Number	Exhibit	Incorporated by Reference
10.21	Form of Indemnification Agreement executed by and between SkyWest, Inc. and each of Ronald J. Mittelstaedt and Keith E. Smith, as of October 1, 2013	(14)
10.22	Amended and Restated Capacity Purchase Agreement, dated as of November 7, 2014, by and between ExpressJet Airlines, Inc. and United Airlines*	(15)
10.23	Indemnification Agreement executed by and between SkyWest, Inc. and Robert J. Simmons, as of March 16, 2015	Filed herewith
10.25	Form of Indemnification Agreement executed by and between SkyWest, Inc. and each of Meredith S. Madden and Andrew C. Roberts, as of May 5, 2015	Filed herewith
21.1	Subsidiaries of the Registrant	(12)
23.1	Consent of Independent Registered Public Accounting Firm	Filed herewith
31.1	Certification of Chief Executive Officer	Filed herewith
31.2	Certification of Chief Financial Officer	Filed herewith
32.1	Certification of Chief Executive Officer	Filed herewith
32.2	Certification of Chief Financial Officer	Filed herewith
101.INS**	XBRL Instance Document
101.SCH**	XBRL Taxonomy Extension Schema Document
101.CAL**	XBRL Taxonomy Extension Calculation Linkbase Document
101.LAB**	XBRL Taxonomy Extension Label Linkbase Document
101.PRE**	XBRL Taxonomy Extension Presentation Linkbase Document
101.DEF**	XBRL Taxonomy Extension Definition Linkbase Document

*Certain portions of this exhibit have been omitted pursuant to Rule 24b‑2 and are subject to a confidential treatment request.

**Attached as Exhibit 101 to this report are the following documents formatted in XBRL (Extensible Business Reporting Language): (i) the Consolidated Statement of Comprehensive Income (Loss) for the years ended December 31, 2015, December 31, 2014 and December 31, 2013, (ii) the Consolidated Balance Sheet at December 31, 2015 and December 31, 2014, and (iii) the Consolidated Statement of Cash Flows for the years ended December 31, 2015, December 31, 2014 and December 31, 2013

(1)Incorporated by reference to the exhibits to a Registration Statement on Form S‑3, File No. 333‑129832

(2)Incorporated by reference to a Registration Statement on Form S‑3, File No. 333‑42508

(3)Incorporated by reference to Registrant’s Current Report on Form 8‑K filed on September 13, 2005, as amended by Amendment No. 2 on Form 8‑K/A filed on February 21, 2006

(4)Incorporated by reference to exhibits to Registrant’s Quarterly Report on Form 10‑Q filed on November 14, 2003

(5)Incorporated by reference to the exhibits to Amendment No. 1 to a Registration Statement on Form S‑3 filed on February 10, 1998 (File No. 333‑44619)

(6)Incorporated by reference to the exhibits to Registrant’s Quarterly Report on Form 10‑Q filed for the quarter ended December 31, 1986

(7)Incorporated by reference to the exhibits to Registrant’s Quarterly Report on Form 10‑Q filed on February 13, 2001

(8)Incorporated by reference to the exhibits to a Registration Statement on Form S‑8 (File No. 333‑130848)

90

(9)Incorporated by reference to the exhibits to Registrant’s Annual Report on Form 10‑K filed on February 25, 2009

(10)Incorporated by reference to the exhibits to Registrant’s Current Report on Form 8‑K filed on November 18, 2010

(11)Incorporated by reference to the exhibits to Registrant’s Current Report on Form 8‑K filed on December 13, 2012, as amended by Amendment No. 1 to Current Report on Form 8‑K/A filed on June 25, 2013

(12)Incorporated by reference to the exhibits to Registrant’s Annual Report on Form 10‑K filed on February 24, 2012

(13)Incorporated by reference to the exhibits to Registrant’s Quarterly Report on Form 10 Q filed on August 7, 2013, as amended by Amendment No. 1 to Quarterly Report on Form 10 Q/A filed on November 4, 2013

(14)Incorporated by reference to the exhibits to Registrant’s Annual Report on Form 10‑K filed on February 14, 2014

(15)Incorporated by reference to the exhibits to Registrant’s Annual Report on Form 10‑K  filed on February 18, 2015

91

Report of Independent Registered Public Accounting Firm

The Board of Directors and Stockholders

SkyWest, Inc.

We have audited the consolidated financial statements of SkyWest, Inc. and subsidiaries (the “Company”) as of December 31, 2015 and 2014, and for each of the three years in the period ended December 31, 2015, and have issued our report thereon dated February 26, 2016 (included elsewhere in this Form 10-K). Our audits also included the financial statement schedule listed in Item 15(a) of this Form 10-K. This schedule is the responsibility of the Company’s management. Our responsibility is to express an opinion based on our audits.

In our opinion, the financial statement schedule referred to above, when considered in relation to the basic financial statements taken as a whole, presents fairly in all material respects the information set forth therein.

/s/ Ernst & Young LLP

Salt Lake City, Utah

February 26, 2016

92

SKYWEST, INC. AND SUBSIDIARIES

SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS

For the Years Ended December 31, 2015, 2014 and 2013

(Dollars in thousands)

			Additions
	Balance at		Charged to
	Beginning		Costs and			Balance at
Description	of Year		Expenses		Deductions	End of Year
Year ended December 31, 2015:
Allowance for inventory obsolescence	$	11,588		2,345	—	$	13,933
Allowance for doubtful accounts receivable		326		—	(139)		187
		11,914		2,345	(139)	$	14,120
Year ended December 31, 2014:
Allowance for inventory obsolescence	$	10,138		1,450	—	$	11,588
Allowance for doubtful accounts receivable		94		232	—		326
		10,232		1,682	—	$	11,914
Year ended December 31, 2013:
Allowance for inventory obsolescence	$	9,189		949	—	$	10,138
Allowance for doubtful accounts receivable		94		—	—		94
		9,283		949	—		10,232

93

SIGNATURES

Pursuant to the requirements of Section 13 or 15 (d) of the Securities Act of 1934, as amended, the Registrant has duly caused this Annual Report on Form 10‑K for the year ended December 31, 2015, to be signed on its behalf by the undersigned, thereunto duly authorized, on February 26, 2016.

Skywest, Inc.
By:	/s/ ROBERT J. SIMMONS Robert J. Simmons Chief Financial Officer

94

ADDITIONAL SIGNATURES

Pursuant to the requirement of the Securities Act of 1934, as amended, this Annual Report on Form 10‑K has been signed below by the following persons in the capacities and on the dates indicated.

	Name		Capacities		Date
/s/ Jerry C. Atkin Jerry C. Atkin		Chairman of the Board		February 26, 2016
/s/ Russell A. Childs Russell A. Childs		Chief Executive Officer (Principal Executive Officer) and Director		February 26, 2016
/s/ Robert J. Simmons Robert J. Simmons		Chief Financial Officer (Principal Financial Officer)		February 26, 2016
/s/ Eric J. Woodward Eric J. Woodward		Chief Accounting Officer (Principal Accounting Officer)		February 26, 2016
/s/ Steven F. Udvar‑Hazy Steven F. Udvar‑Hazy		Lead Director		February 26, 2016
/s/ W. Steve Albrecht Steve Albrecht		Director		February 26, 2016
/s/ Henry J. Eyring Henry J. Eyring		Director		February 26, 2016
/s/ Meredith S. Madden Meredith S. Madden		Director		February 26, 2016
/s/ Ronald J. Mittelstaedt Ronald J. Mittelstaedt		Director		February 26, 2016
/s/ Andrew C. Roberts Andrew C. Roberts		Director		February 26, 2016
/s/ Keith E. Smith Keith E. Smith		Director		February 26, 2016
/s/ James L. Welch James L. Welch		Director		February 26, 2016

95

EX-10.23

Exhibit 10.23

INDEMNIFICATION AGREEMENT

THIS INDEMNIFICATION AGREEMENT is entered into as of March 16, 2015, by and between SkyWest, Inc., a Utah corporation (the “Company”), and Robert J. Simmons, an individual (“Indemnitee”).

RECITALS

A.The Company is aware that because of the increased exposure to litigation costs, talented and experienced persons are increasingly reluctant to serve or continue serving as directors and officers of corporations unless they are protected by comprehensive liability insurance and indemnification.

B.The statutes and judicial decisions regarding the duties of directors and officers are often difficult to apply, ambiguous, or conflicting, and therefore often fail to provide such directors and officers with adequate guidance regarding the proper course of action.

C.The Board of Directors of the Company (the “Board”), has concluded that, in order to retain and attract talented and experienced individuals to serve as officers and directors of the Company and its subsidiaries and to encourage such individuals to take the business risks necessary for the success of the Company and its subsidiaries, the Company should contractually indemnify its officers and directors, and the officers and directors of its subsidiaries, in connection with claims against such officers and directors relating to their services to the Company and its subsidiaries and has further concluded that the failure to provide such contractual indemnification could be detrimental to the Company, its subsidiaries and shareholders.

D.Indemnitee’s willingness to serve as an officer of the Company is predicated, in substantial part, upon the Company’s willingness to indemnify Indemnitee in accordance with the principles reflected above, to the fullest extent permitted by the laws of the State of Utah, and upon the other undertakings set forth in this Agreement.

NOW, THEREFORE, in consideration of the promises and as an inducement to Indemnitee to serve as an officer of the Company, the parties, intending to be legally bound, hereby agree as follows:

1.Definitions.

(a)Agent.  “Agent” with respect to the Company means any person who is or was a director, officer, employee or other agent of the Company or a Subsidiary; or is or was serving at the request of, for the convenience of, or to represent the interests of, the Company or a Subsidiary as a director, officer, employee or agent of another corporation, partnership, joint venture, trust or other enterprise (including without limitation any employee benefit plan whether or not subject to the Employee Retirement Income Security Act of 1974, as amended (“ERISA”)); or was a director, officer, employee or agent of a predecessor corporation (or other predecessor entity or enterprise) of the Company or a Subsidiary, or was a director, officer, employee or agent of another corporation, partnership, joint venture, trust or other enterprise

Indemnification Agreement:  [Robert J. simmons] Page 1of 13

(including without limitation any employee benefit plan whether or not subject to the ERISA) at the request of, for the convenience of, or to represent the interests of such predecessor.

(b)Change in Control.  “Change in Control” shall mean, and shall be deemed to have occurred if, on or after the date of this Agreement:  (i) any “person” (as such term is used in Sections 13(d) and 14(d) of the Securities Exchange Act of 1934, as amended) or group acting in concert, other than a trustee or other fiduciary holding securities under an employee benefit plan of the Company acting in such capacity or a corporation owned directly or indirectly by the shareholders of the Company in substantially the same proportions as their ownership of stock of the Company, becomes the “beneficial owner” (as defined in Rule 13d-3 under said Act), directly or indirectly, of securities of the Company representing more than 50% of the total voting power represented by the Company’s then outstanding voting securities; (ii) during any period of two (2) consecutive years, individuals who at the beginning of such period constitute the Board and any new director whose election by the Board or nomination for election by the Company’s shareholders was approved by a vote of at least two-thirds (2/3) of the directors then still in office who either were directors at the beginning of the period or whose election or nomination for election was previously so approved, cease for any reason to constitute a majority thereof; (iii) the shareholders of the Company approve a merger or consolidation of the Company with any other corporation other than a merger or consolidation which would result in the voting securities of the Company outstanding immediately prior thereto continuing to represent (either by remaining outstanding or by being converted into voting securities of the surviving entity) at least eighty percent (80%) of the total voting power represented by the voting securities of the Company or such surviving entity outstanding immediately after such merger or consolidation; or (iv) the shareholders of the Company approve a plan of complete liquidation of the Company or an agreement for the sale or disposition by the Company of (in one transaction or a series of related transactions) all or substantially all of the Company’s assets.

(c)Company.  References to the “Company” shall include, in addition to SkyWest, Inc., any constituent corporation (including any constituent of a constituent) absorbed in a consolidation or merger to which SkyWest, Inc. (or any of its wholly-owned subsidiaries) is a party which, if its separate existence had continued, would have had power and authority to indemnify its directors, officers, employees, agents or fiduciaries, so that if Indemnitee is or was a director, officer, employee, agent or fiduciary of such constituent corporation, or is or was serving at the request of such constituent corporation as a director, officer, employee, agent or fiduciary of another corporation, partnership, joint venture, employee benefit plan, trust or other enterprise, Indemnitee shall stand in the same position under the provisions of this Agreement with respect to the resulting or surviving corporation as Indemnitee would have with respect to such constituent corporation if its separate existence had continued.

(d)Expenses.  “Expenses” means all direct and indirect costs of any type or nature whatsoever (including, without limitation, all reasonable attorneys’ and experts’ fees, costs of investigation and related disbursements) reasonably incurred by Indemnitee in connection with the investigation (whether formal or informal), settlement, defense or appeal of a Proceeding covered hereby or the establishment or enforcement of a right to indemnification under this Agreement, including without limitation in the case of an appeal the premium for, and other costs relating to, any costs bond or supercedes bond or other appeal bond or its equivalent.

Indemnification Agreement:  [Robert simmons] Page 2of 13

(e)Independent Legal Counsel.  “Independent Legal Counsel” shall mean an attorney or firm of attorneys, selected in accordance with the provisions of Section 3(h) hereof, who shall not have otherwise performed services for the Company or Indemnitee within the preceding three years (other than with respect to matters concerning the rights of Indemnitee under this Agreement, or of other Indemnitees under similar indemnity agreements).

(f)Other References.  References to “other enterprises” shall include employee benefit plans; references to “fines” shall include any excise taxes assessed on Indemnitee with respect to an employee benefit plan; and references to “serving at the request of the Company” shall include any service as a director, officer, employee, agent or fiduciary of the Company which imposes duties on, or involves services by, such director, officer, employee, agent or fiduciary with respect to an employee benefit plan, its participants or its beneficiaries; and if Indemnitee acted in good faith and in a manner Indemnitee reasonably believed to be in the interest of the participants and beneficiaries of an employee benefit plan, Indemnitee shall be deemed to have acted in a manner “not opposed to the best interests of the Company”  as referred to in this Agreement.

(g)Proceeding.  “Proceeding” means any threatened, pending, or completed claim, suit, action, proceeding or alternative dispute resolution mechanism, or any hearing or investigation, whether civil, criminal, administrative, investigative or otherwise, including without limitation any situation which Indemnitee believes in good faith might lead to the institution of any such proceeding.

(h)Reviewing Party.  “Reviewing Party” shall mean, subject to the provisions of Section 3(f), any person or body appointed by the Board in accordance with applicable law to review the Company’s obligations hereunder and under applicable law, which may include a member or members of the Board, Independent Legal Counsel or any other person or body not a party to the particular Proceeding for which Indemnitee is seeking indemnification.

(i)Subsidiary.  “Subsidiary” means any corporation or other entity of which more than ten percent (10%) of the outstanding voting securities or other voting interests is owned directly or indirectly by the Company, and one or more other Subsidiaries, taken as a whole.

2.Maintenance of Liability Insurance.

(a)The Company hereby covenants and agrees with Indemnitee that, subject to Section 2(b), the Company shall obtain and maintain in full force and effect directors’ and officers’ liability insurance (“D&O Insurance”), in reasonable amounts as the Board shall determine from established and reputable insurers with an AM Best rating of A.VI or better, but no less than the amounts in effect upon initial procurement of the D&O Insurance.  In all policies of D&O Insurance, Indemnitee shall be named as an insured.

(b)Notwithstanding the foregoing, the Company shall have no obligation to obtain or maintain D&O Insurance if the Board determines in good faith that the premium costs for such insurance are (i) disproportionate to the amount of coverage provided after giving effect

Indemnification Agreement:  [Robert simmons] Page 3 of 13

to exclusions, and (ii) substantially more burdensome to the Company than the premiums charged to the Company for its initial D&O Insurance.

(c)To the extent the Company maintains liability insurance applicable to directors, officers, employees, agents or fiduciaries, Indemnitee shall be covered by such policies in such a manner as to provide Indemnitee the same rights and benefits as are provided to the most favorably insured of the Company’s directors, if Indemnitee is a director; or of the Company’s officers, if Indemnitee is not a director of the Company but is an officer; or of the Company’s key employees, agents or fiduciaries, if Indemnitee is not an officer or director but is a key employee, agent or fiduciary.

3.Mandatory Indemnification.  The Company shall defend, indemnify and hold harmless Indemnitee to the fullest extent permitted by the Utah Revised Business Corporation Act (the “Act”):

(a)Third Party Actions.  If Indemnitee was or is a party, or is threatened to be made a party, to any Proceeding (other than an action by or in the right of the Company) by reason of the fact that Indemnitee is or was or is claimed to be an Agent of the Company, or by reason of anything done or not done by Indemnitee in any such capacity, or by reason of the fact that Indemnitee personally guaranteed any obligation of the Company at any time, against any and all Expenses and liabilities or any type whatsoever (including, but not limited to, legal fees, judgments, fines, ERISA excise taxes or penalties, and amounts paid in settlement) reasonably incurred by Indemnitee in connection with the investigation, defense, settlement or appeal of such Proceeding, if Indemnitee acted in good faith and in a manner Indemnitee reasonably believed to be in or not opposed to the best interests of the Company, or, with respect to any criminal action or Proceeding, had no reasonable cause to believe such persons conduct was unlawful.  The termination of any action, suit or proceeding by judgment, order, settlement, conviction, or upon a plea of nolo contendere or its equivalent, shall not, of itself, create a presumption that Indemnitee did not act in good faith and in a manner which Indemnitee reasonably believed to be in or not opposed to the best interests of the Company, and, with respect to any criminal action or proceeding, had reasonable cause to believe that Indemnitee’s conduct was unlawful.

(b)Derivative Actions.  If Indemnitee was or is a party, or is threatened to be made a party, to any Proceeding by or in the right of the Company by reason of the fact that Indemnitee is or was an Agent of the Company, or by reason of anything done or not done by Indemnitee in any such capacity, against any and all Expenses and liabilities of any type whatsoever (including, but not limited to, legal fees, judgments, fines, ERISA excise taxes or penalties, and amounts paid in settlement) incurred by Indemnitee in connection with the investigation, defense, settlement or appeal of such Proceeding, if Indemnitee acted in good faith and in a manner Indemnitee reasonably believed to be in or not opposed to the best interests of the Company; except that no indemnification under this subsection shall be made, and Indemnitee shall repay all amounts previously advanced by the Company, in respect of any claim, issue or matter for which Indemnitee is judged in a final, non-appealable decision to be liable to the Company by a court of competent jurisdiction due to willful misconduct in the performance of Indemnitee’s duties to the Company, unless and only to the extent that the court in which such Proceeding was brought shall determine that, despite the adjudication of liability

Indemnification Agreement:  [Robert simmons] Page 4 of 13

but in view of all of the circumstances of the case, Indemnitee is fairly and reasonably entitled to indemnification.  The termination of any action, suit or proceeding by judgment, order, settlement, conviction, or upon a plea of nolo contendere or its equivalent, shall not, of itself, create a presumption that Indemnitee did not act in good faith and in a manner which Indemnitee reasonably believed to be in or not opposed to the best interests of the Company, and, with respect to any criminal action or proceeding, had reasonable cause to believe that Indemnitee’s conduct was unlawful.

(c)Presumptions; Burden of Proof.  In making any determination concerning Indemnitee’s right to indemnification, there shall be a presumption that Indemnitee has satisfied the applicable standard of conduct, and the Company may overcome such presumption only by its adducing clear and convincing evidence to the contrary.  For purposes of this Agreement, the termination of any Proceeding by judgment, order, settlement (whether with or without court approval) or conviction, or upon a plea of nolo contendere, or its equivalent, shall not create a presumption that Indemnitee did not meet any particular standard of conduct or have any particular belief or that a court has determined that indemnification is not permitted by this Agreement or applicable law.  In addition, neither the failure of any Reviewing Party to have made a determination as to whether Indemnitee has met any particular standard of conduct or had any particular belief, nor an actual determination by any Reviewing Party that Indemnitee has not met such standard of conduct or did not have such belief, prior to the commencement of legal proceedings by Indemnitee to secure a judicial determination that Indemnitee should be indemnified under this Agreement under applicable law, shall be a defense to Indemnitee’s claim or create a presumption that Indemnitee has not met any particular standard of conduct or did not have any particular belief.  Any determination concerning Indemnitee’s right to indemnification that is adverse to Indemnitee may be challenged by Indemnitee in the courts of the State of Utah.  No determination by the Company (including without limitation by its directors or any Independent Legal Counsel) that Indemnitee has not satisfied any applicable standard of conduct shall be a defense to any claim by Indemnitee for indemnification or reimbursement or advance payment of Expenses by the Company hereunder or create a presumption that Indemnitee has not met any applicable standard of conduct.

(d)Actions Where Indemnitee Is Deceased.  If Indemnitee was or is a party, or is threatened to be made a party, to any Proceeding by reason of the fact that Indemnitee is or was an Agent of the Company, or by reason of anything done or not done by Indemnitee in any such capacity, and prior to, during the pendency of, or after completion of, such Proceeding, Indemnitee shall die, then the Company shall defend, indemnify and hold harmless the estate, heirs and legatees of Indemnitee against any and all Expenses and liabilities reasonably incurred by or for such persons or entities in connection with the investigation, defense, settlement or appeal of such Proceeding on the same basis as provided for Indemnitee in Sections 3(a) and 3(b) above.

(e)Extent of Insurance.  The Expenses and liabilities covered hereby shall be net of any payments made by D&O Insurance carriers or others.

(f)Review of Indemnification Obligations.  Notwithstanding the foregoing, in the event any Reviewing Party shall have determined (in a written opinion, in any case in which Independent Legal Counsel is the Reviewing Party) that Indemnitee is not entitled to be

Indemnification Agreement:  [Robert simmons] Page 5 of 13

indemnified hereunder under applicable law:  (i) the Company shall have no further obligation under Section 3(a) or 3(b) to make any payments to Indemnitee not made prior to such determination by such Reviewing Party; and (ii) the Company shall be entitled to be reimbursed by Indemnitee (who hereby agrees to reimburse the Company) for all Expenses theretofore paid to Indemnitee to which Indemnitee is not entitled hereunder under applicable law; provided,  however, that if Indemnitee has commenced or thereafter commences legal proceedings in a court of competent jurisdiction to secure a determination that Indemnitee is entitled to be indemnified hereunder under applicable law, any determination made by any Reviewing Party that Indemnitee is not entitled to be indemnified hereunder under applicable law shall not be binding and Indemnitee shall not be required to reimburse the Company for any Expenses theretofore paid in indemnifying Indemnitee until a final judicial determination is made with respect thereto (as to which all rights of appeal therefrom have been exhausted or lapsed).  Indemnitee’s obligation to reimburse the Company for any Expenses shall be unsecured and no interest shall be charged thereon.

(g)Indemnitee Rights on Unfavorable Determination; Binding Effect.  If any Reviewing Party determines that Indemnitee substantively is not entitled to be indemnified hereunder in whole or in part under applicable law, Indemnitee shall have the right to commence litigation seeking an initial determination by the court or challenging any such determination by such Reviewing Party or any aspect thereof, including the legal or factual bases therefor, and the Company hereby consents to service of process and to appear in any such proceeding.  Absent such litigation, any determination by any Reviewing Party shall be conclusive and binding on the Company and Indemnitee.

(h)Selection of Reviewing Party; Change in Control.  A determination, if required by applicable law, with respect to Indemnitee’s entitlement to indemnification shall be made in accordance with the provisions of this paragraph (h).  If there has not been a Change in Control, a Reviewing Party shall be selected by the Board, and if there has been such a Change in Control (other than a Change in Control which has been approved by a majority of the Board who were directors immediately prior to such Change in Control), any Reviewing Party with respect to all matters thereafter arising concerning the rights of Indemnitee to indemnification of Expenses under this Agreement or any other agreement or under the Company’s Articles of Incorporation or Bylaws as now or hereafter in effect, or under any other applicable law, if desired by Indemnitee, shall be Independent Legal Counsel selected by Indemnitee and approved by the Company (which approval shall not be unreasonably withheld).  Such counsel, among other things, shall render its written opinion to the Company and Indemnitee as to whether and to what extent Indemnitee would be entitled to be indemnified hereunder under applicable law and the Company agrees to abide by such opinion.  The Company agrees to pay the reasonable fees of the Independent Legal Counsel referred to above and to indemnify fully such counsel against any and all expenses (including attorneys’ fees), claims, liabilities and damages arising out of or relating to this Agreement or its engagement pursuant hereto.  Notwithstanding any other provision of this Agreement, the Company shall not be required to pay Expenses of more than one Independent Legal Counsel in connection with all matters concerning a single Indemnitee, and such Independent Legal Counsel shall be the Independent Legal Counsel for any or all other Indemnitees unless:  (i) the employment of separate counsel by one or more Indemnitees has been previously authorized by the Board in writing; or (ii) an Indemnitee shall have provided to the Company a written statement that such Indemnitee has reasonably concluded that there may

Indemnification Agreement:  [Robert simmons] Page 6 of 13

be a conflict of interest between such Indemnitee and the other Indemnitees with respect to the matters arising under this Agreement.

4.Partial Indemnification.  If Indemnitee is found under Sections 3, 6 or 9 hereof not to be entitled to indemnification for all of the Expenses relating to a Proceeding, the Company shall indemnify Indemnitee for any portion of such Expenses not specifically precluded by the operation of such Sections 3, 6 or 9.

5.Indemnification Procedures; Mandatory Advancement of Expenses.

(a)Promptly after receipt by Indemnitee of notice to him or her of the commencement or threat of any Proceeding covered hereby, Indemnitee shall notify the Company of the commencement or threat thereof, provided that any failure to so notify shall not relieve the Company of any of its obligations hereunder, except to the extent that such failure prejudices the Company’s ability to perform its obligations hereunder.

(b)If, at the time of the receipt of a notice pursuant to Section 5(a) above, the Company has D&O Insurance in effect, the Company shall give prompt notice of the Proceeding or claim to its insurers in accordance with the procedures set forth in the applicable policies.  The Company shall thereafter take all reasonably necessary action to cause such insurers to pay all amounts payable as a result of such Proceeding in accordance with the terms of such policies.

(c)Indemnitee shall be entitled to retain one or more counsel from time to time selected by Indemnitee in Indemnitee’s reasonable discretion to act as its counsel in and for the investigation, defense, settlement or appeal of each Proceeding.  The Company shall not waive any privilege or right available to Indemnitee in any such Proceeding.

(d)The Company shall bear all reasonable fees and Expenses (including invoices for advance retainers) of such counsel, and all reasonable fees and Expenses invoiced by other persons or entities, in connection with the investigation, defense, settlement or appeal of each such Proceeding.  Such fees and Expenses are referred to herein as “Covered Expenses.”

(e)Until a determination to the contrary under Section 6 hereof is made, the Company shall advance all Covered Expenses in connection with each Proceeding.  Indemnitee shall qualify for advances upon the execution and delivery to the Company of this Agreement which shall constitute an undertaking providing that Indemnitee undertakes to the fullest extent permitted by law to repay the advance if and to the extent that it is ultimately determined by a court of competent jurisdiction in a final judgment, not subject to appeal, that Indemnitee is not entitled to be indemnified by the Company.  No other form of undertaking shall be required other than the execution of this Agreement.  Advances shall be unsecured and interest free.  Advances shall be made without regard to Indemnitee’s ability to repay the expenses and without regard to Indemnitee’s ultimate entitlement to indemnification under the other provisions of this Agreement.

(f)Each advance to be made hereunder shall be paid by the Company to Indemnitee within ten (10) business days following delivery of a written request therefor by Indemnitee to the Company.

Indemnification Agreement:  [Robert simmons] Page 7 of 13

(g)The Company acknowledges the potentially severe damage to Indemnitee should the Company fail timely to make such advances to Indemnitee.

(h)The Company shall not settle any proceeding if, as a result of such settlement, any fine or obligation is imposed on Indemnitee without Indemnitee’s prior written consent.

(i)If Indemnitee is the subject of or is implicated in any way during any proceeding, the Company will share with Indemnitee any information it has turned over to any third parties concerning the investigation.

(j)The knowledge and/or actions, or failure to act, of any other Agent of the Company shall not be imputed to Indemnitee for purposes of determining the right to indemnification under this Agreement.

(k)For purposes of any determination of good faith, Indemnitee shall be deemed to have acted in good faith if Indemnitee’s action is based on the records or books of account of the Company, including financial statements, or on information supplied to Indemnitee by the officers of the Company (other than Indemnitee) in the course of their duties, or on the advice of legal counsel for the Company or the Board or counsel selected by any committee of the Board or on information or records given or reports made to the Company by an independent certified public accountant or by an appraiser, investment banker, compensation consultant, or other expert selected with reasonable care by the Company or the Board or any committee of the Board.  The provisions of this Section 5(k) shall not be deemed to be exclusive or to limit in any way the other circumstances in which Indemnitee may be deemed to have met the applicable standard of conduct.

(l)Notice to Insurers.  If, at the time of the receipt by the Company of a notice of a Proceeding subject to Section 3(a) or 3(b) hereof, the Company has D&O Insurance or other liability insurance in effect which may cover such Proceeding, the Company shall give prompt notice of the commencement of such Proceeding to the insurers in accordance with the procedures set forth in the respective policies.  The Company shall thereafter take all reasonably necessary action to cause such insurers to pay, on behalf of Indemnitee, all amounts payable as a result of such Proceeding in accordance with the terms of such policies.

(m)Selection of Counsel.  In the event the Company shall be obligated hereunder to provide indemnification for or make any advancement of Expenses with respect to the Expenses of any Proceeding, the Company, if appropriate, shall be entitled to assume the defense of such Proceeding with counsel selected by the Company, subject to approval by Indemnitee (which approval shall not be unreasonably withheld), upon the delivery to Indemnitee of written notice of the Company’s election to do so.  After delivery of such notice and the retention of such counsel by the Company, the Company will not be liable to Indemnitee under this Agreement for any fees or expenses of separate counsel subsequently retained by or on behalf of Indemnitee with respect to the same Proceeding; provided that:  (i) Indemnitee shall have the right to employ Indemnitee’s separate counsel in any such Proceeding at Indemnitee’s expense; and (ii) if (A) the employment of separate counsel by Indemnitee has been previously authorized by the Company, (B) Indemnitee shall have reasonably concluded that there may be a

Indemnification Agreement:  [Robert simmons] Page 8 of 13

conflict of interest between the Company and Indemnitee in the conduct of any such defense, or (C) the Company shall not continue to retain such counsel to defend such Proceeding, then the fees and expenses of Indemnitee’s separate counsel shall be Expenses for which Indemnitee may receive indemnification or advancement of Expenses hereunder.

6.Determination of Right to Indemnification.

(a)To the extent Indemnitee has been successful on the merits or otherwise in defense of any Proceeding, claim, issue or matter covered hereby, Indemnitee need not repay any of the Expenses advanced in connection with the investigation, defense or appeal of such Proceeding.

(b)Indemnitee shall have the right to advancement by the Company prior to the final disposition of any Proceeding of any and all Expenses relating to, arising out of or resulting from any Proceeding paid or incurred by Indemnitee or which Indemnitee determines are reasonably likely to be paid or incurred by Indemnitee.

(c)Subject to the provisions of Section 3(f), notwithstanding a determination by a Reviewing Party or a court that Indemnitee is not entitled to indemnification with respect to a specific Proceeding, Indemnitee shall have the right to apply to the courts of the State of Utah for the purpose of enforcing Indemnitee’s right to indemnification pursuant to this Agreement.

(d)Subject to the provisions of Section 3(h),  the Company shall indemnify Indemnitee against all Expenses reasonably incurred by Indemnitee in connection with any Proceeding under Sections 6(b) or 6(c) and against all Expenses reasonably incurred by Indemnitee in connection with any other Proceeding between the Company and Indemnitee involving the interpretation or enforcement of the rights of Indemnitee under this Agreement unless a court of competent jurisdiction finds that each of the material claims and/or defenses of Indemnitee in any such Proceeding were frivolous or made in bad faith.

(e)The Company hereby agrees to indemnify Indemnitee to the fullest extent permitted by the Act, notwithstanding that such indemnification is not specifically authorized by the other provisions of this Agreement, the Company’s Articles of Incorporation, the Company’s Bylaws or by statute.  In the event of any change after the date of this Agreement in any applicable law, statute or rule which expands the right of a Utah corporation to indemnify a member of its board of directors or an officer, employee, agent or fiduciary, it is the intent of the parties hereto that Indemnitee shall enjoy by this Agreement the greater benefits afforded by such change.  In the event of any change in any applicable law, statute or rule which narrows the right of a Utah corporation to indemnify a member of its board of directors or an officer, employee, agent or fiduciary, such change, to the extent not otherwise required by such law, statute or rule to be applied to this Agreement, shall have no effect on this Agreement or the parties’ rights and obligations hereunder except as set forth in Section 9 hereof.

(f)Nonexclusivity.  The indemnification and the payment of Expense advances provided by this Agreement shall be in addition to any rights to which Indemnitee may be entitled under the Company’s Articles of Incorporation, its Bylaws, any other agreement, any vote of shareholders or disinterested directors, the Act, or otherwise.  The indemnification and

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the payment or advancement of Expenses provided under this Agreement shall continue as to Indemnitee for any action taken or not taken while serving in an indemnified capacity even though subsequent thereto Indemnitee may have ceased to serve in such capacity.

(g)No Duplication of Payments.  The Company shall not be liable under this Agreement to make any payment in connection with any Proceeding to the extent Indemnitee has otherwise actually received payment (under any insurance policy, provision of the Company’s Articles of Incorporation, Bylaws or otherwise) of the amounts otherwise payable hereunder.

(h)Partial Indemnification.  If Indemnitee is entitled under any provision of this Agreement to indemnification by the Company for some or a portion of Expenses incurred in connection with any Proceeding, but not, however, for all of the total amount thereof, the Company shall nevertheless indemnify Indemnitee for the portion of such Expenses to which Indemnitee is entitled.

7.Articles of Incorporation and By-Laws.  The Company agrees that the Company’s Articles of Incorporation and Bylaws in effect on the date hereof shall not be amended to reduce, limit, hinder or delay (a) the rights of Indemnitee granted hereby, or (b) the ability of the Company to indemnify Indemnitee as required hereby.  The Company further agrees that it shall exercise the powers granted to it under its Articles of Incorporation, its Bylaws and by applicable law to indemnify Indemnitee to the fullest extent possible as required hereby.

8.Witness Expenses.  The Company agrees to compensate Indemnitee for the reasonable value of Indemnitee’s time spent, and to reimburse Indemnitee for all Expenses (including reasonable attorneys’ fees and travel costs) reasonably incurred by Indemnitee, in connection with being a witness, or if Indemnitee is threatened to be made a witness, with respect to any Proceeding, by reason of Indemnitee serving or having served as an Agent of the Company.

9.Exceptions.  Notwithstanding any other provision hereunder to the contrary, the Company shall not be obligated pursuant to the terms of this Agreement:

(a)Claims Initiated by Indemnitee.  To indemnify or advance Expenses to Indemnitee with respect to Proceedings or claims initiated or brought voluntarily by Indemnitee and not by way of defense (other than:  (i) Proceedings under Sections 6(b) or 6(c); (ii) proceedings brought to establish or enforce a right to indemnification under this Agreement or the provisions of the Company’s Articles of Incorporation or Bylaws unless a court of competent jurisdiction determines that each of the material assertions made by Indemnitee in such Proceeding were not made in good faith or were frivolous; or (iii) proceedings or claims instituted by Indemnitee with the approval by the Board); or

(b)Unauthorized Settlements.  To indemnify Indemnitee under this Agreement for any amounts paid in settlement of a Proceeding covered hereby without the prior written consent of the Company to such settlement, which consent will not be unreasonably withheld provided that the Company’s consent is not required if the Company is refusing to indemnify or advance Expenses to Indemnitee.

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10.Non-exclusivity.  This Agreement is not the exclusive arrangement between the Company and Indemnitee regarding the subject matter hereof and shall not diminish or affect any other rights which Indemnitee may have under any provision of law, the Company’s Articles of Incorporation or Bylaws, under other agreements, or otherwise.

11.Continuation After Term; Binding Effect.  Indemnitee’s rights hereunder shall continue after Indemnitee has ceased acting an Agent of the Company and the benefits hereof shall inure to the benefit of the heirs, executors and administrators of Indemnitee.  The Company shall require and cause any successor (whether direct or indirect by purchase, merger, consolidation or otherwise) to all, substantially all or a substantial part, of the business and/or assets of the Company, by written agreement in form and substance satisfactory to Indemnitee, expressly to assume and agree to perform this Agreement in the same manner and to the same extent that the Company would be required to perform if no such succession had taken place.

12.Interpretation of Agreement.  This Agreement shall be interpreted and enforced so as to provide indemnification to Indemnitee to the fullest extent now or hereafter permitted by the Act.

13.Severability.  If any provision or provisions of this Agreement shall be held to be invalid, illegal or unenforceable, provisions of the Agreement shall not in any way be affected or impaired thereby, and to the fullest extent possible, the provisions of this Agreement shall be construed or altered by the court so as to remain enforceable and to provide Indemnitee with as many of the benefits contemplated hereby as are permitted under the Act.

14.Counterparts, Modification and Waiver.  This Agreement may be signed in counterparts.  This Agreement constitutes a separate agreement between the Company and Indemnitee and may be supplemented or amended as to Indemnitee only by a written instrument signed by the Company and Indemnitee, with such amendment binding only the Company and Indemnitee.  All waivers must be in a written document signed by the party to be charged.  No waiver of any of the provisions of this Agreement shall be implied by the conduct of the parties.  A waiver of any right hereunder shall not constitute a waiver of any other right hereunder.

15.Notices.  All notices, demands, consents, requests, approvals and other communications required or permitted hereunder shall be in writing and shall be deemed to have been properly given if hand delivered (effective upon receipt or when refused), or if sent by a courier freight prepaid (effective upon receipt or when refused), in the case of the Company, at the addresses listed below, or to such other addresses as the parties may notify each other in writing.

To Company:	SkyWest, Inc. Attention: Chief Executive Officer 444 South River Road St. George, Utah 84790
To Indemnitee:	At Indemnitee’s residence address and facsimile number on the records of the Company from time to time.

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16.Evidence of Coverage.  Upon request by Indemnitee, the Company shall provide evidence of the liability insurance coverage required by this Agreement.  The Company shall promptly notify Indemnitee of any change in the Company’s D&O Insurance coverage.

17.Governing Law.  This Agreement shall be governed by and construed in accordance with the internal laws of the State of Utah.

18.Consent to Jurisdiction.  The Company and Indemnitee each hereby irrevocably consent to the jurisdiction of the courts of the State of Utah for all purposes in connection with any action or proceeding which arises out of or relates to this Agreement and agree that any action instituted under this Agreement shall be commenced, prosecuted and continued only in the federal and state courts located in the State of Utah in and for Salt Lake County, which shall be the exclusive and only proper forum for adjudicating such a claim.

19.No Construction as Employment Agreement.  Nothing contained in this Agreement shall be construed as giving Indemnitee any right to be retained in the employ of the Company or any of its subsidiaries or affiliated entities.

[Remainder of Page Intentionally Left Blank;
Signatures appear on the following page.]

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IN WITNESS WHEREOF, the parties hereto have entered into this Indemnification Agreement effective as of the date first above written.

SkyWest INC.
By:
	Jerry C. Atkin, Chief Executive Officer
INDEMNITEE:
Robert J. Simmons

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EX-10.25

Exhibit 10.25

INDEMNIFICATION AGREEMENT

THIS INDEMNIFICATION AGREEMENT is entered into as of May 5, 2015, by and between SkyWest, Inc., a Utah corporation (the “Company”), and [DIRECTOR NAME] (“Indemnitee”).

RECITALS

A.The Company is aware that because of the increased exposure to litigation costs, talented and experienced persons are increasingly reluctant to serve or continue serving as directors and officers of corporations unless they are protected by comprehensive liability insurance and indemnification.

B.The statutes and judicial decisions regarding the duties of directors and officers are often difficult to apply, ambiguous, or conflicting, and therefore often fail to provide such directors and officers with adequate guidance regarding the proper course of action.

C.The Board of Directors of the Company (the “Board”), has concluded that, in order to retain and attract talented and experienced individuals to serve as officers and directors of the Company and its subsidiaries and to encourage such individuals to take the business risks necessary for the success of the Company and its subsidiaries, the Company should contractually indemnify its officers and directors, and the officers and directors of its subsidiaries, in connection with claims against such officers and directors relating to their services to the Company and its subsidiaries and has further concluded that the failure to provide such contractual indemnification could be detrimental to the Company, its subsidiaries and shareholders.

D.Indemnitee’s willingness to serve as a director or officer of the Company is predicated, in substantial part, upon the Company’s willingness to indemnify Indemnitee in accordance with the principles reflected above, to the fullest extent permitted by the laws of the state of Utah, and upon the other undertakings set forth in this Agreement.

NOW, THEREFORE, in consideration of the promises and as an inducement to Indemnitee to serve as a director or officer of the Company, the parties, intending to be legally bound, hereby agree as follows:

1.Definitions.

(a)Agent.  “Agent” with respect to the Company means any person who is or was a director, officer, employee or other agent of the Company or a Subsidiary; or is or was serving at the request of, for the convenience of, or to represent the interests of, the Company or a Subsidiary as a director, officer, employee or agent of another corporation, partnership, joint venture, trust or other enterprise (including without limitation any employee benefit plan whether or not subject to the Employee Retirement Income Security Act of 1974, as amended (“ERISA”)); or was a director, officer, employee or agent of a predecessor corporation (or other predecessor entity or enterprise) of the Company or a Subsidiary, or was a director, officer, employee or agent of another corporation, partnership, joint venture, trust or other enterprise

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(including without limitation any employee benefit plan whether or not subject to the ERISA) at the request of, for the convenience of, or to represent the interests of such predecessor.

(b)Change in Control.  “Change in Control” shall mean, and shall be deemed to have occurred if, on or after the date of this Agreement:  (i) any “person” (as such term is used in Sections 13(d) and 14(d) of the Securities Exchange Act of 1934, as amended) or group acting in concert, other than a trustee or other fiduciary holding securities under an employee benefit plan of the Company acting in such capacity or a corporation owned directly or indirectly by the shareholders of the Company in substantially the same proportions as their ownership of stock of the Company, becomes the “beneficial owner” (as defined in Rule 13d-3 under said Act), directly or indirectly, of securities of the Company representing more than 50% of the total voting power represented by the Company’s then outstanding voting securities; (ii) during any period of two (2) consecutive years, individuals who at the beginning of such period constitute the Board and any new director whose election by the Board or nomination for election by the Company’s shareholders was approved by a vote of at least two-thirds (2/3) of the directors then still in office who either were directors at the beginning of the period or whose election or nomination for election was previously so approved, cease for any reason to constitute a majority thereof; (iii) the shareholders of the Company approve a merger or consolidation of the Company with any other corporation other than a merger or consolidation which would result in the voting securities of the Company outstanding immediately prior thereto continuing to represent (either by remaining outstanding or by being converted into voting securities of the surviving entity) at least eighty percent (80%) of the total voting power represented by the voting securities of the Company or such surviving entity outstanding immediately after such merger or consolidation; or (iv) the shareholders of the Company approve a plan of complete liquidation of the Company or an agreement for the sale or disposition by the Company of (in one transaction or a series of related transactions) all or substantially all of the Company’s assets.

(c)Company.  References to the “Company” shall include, in addition to SkyWest, Inc., any constituent corporation (including any constituent of a constituent) absorbed in a consolidation or merger to which SkyWest, Inc. (or any of its wholly owned subsidiaries) is a party which, if its separate existence had continued, would have had power and authority to indemnify its directors, officers, employees, agents or fiduciaries, so that if Indemnitee is or was a director, officer, employee, agent or fiduciary of such constituent corporation, or is or was serving at the request of such constituent corporation as a director, officer, employee, agent or fiduciary of another corporation, partnership, joint venture, employee benefit plan, trust or other enterprise, Indemnitee shall stand in the same position under the provisions of this Agreement with respect to the resulting or surviving corporation as Indemnitee would have with respect to such constituent corporation if its separate existence had continued.

(d)Expenses.  “Expenses” means all direct and indirect costs of any type or nature whatsoever (including, without limitation, all reasonable attorneys’ and experts’ fees, costs of investigation and related disbursements) reasonably incurred by Indemnitee in connection with the investigation (whether formal or informal), settlement, defense or appeal of a Proceeding covered hereby or the establishment or enforcement of a right to indemnification under this Agreement, including without limitation in the case of an appeal the premium for, and other costs relating to, any costs bond or supercedes bond or other appeal bond or its equivalent.

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(e)Independent Legal Counsel.  “Independent Legal Counsel” shall mean an attorney or firm of attorneys, selected in accordance with the provisions of Section 3(h) hereof, who shall not have otherwise performed services for the Company or Indemnitee within the preceding three years (other than with respect to matters concerning the rights of Indemnitee under this Agreement, or of other Indemnitees under similar indemnity agreements).

(f)Other References.  References to “other enterprises” shall include employee benefit plans; references to “fines” shall include any excise taxes assessed on Indemnitee with respect to an employee benefit plan; and references to “serving at the request of the Company” shall include any service as a director, officer, employee, agent or fiduciary of the Company which imposes duties on, or involves services by, such director, officer, employee, agent or fiduciary with respect to an employee benefit plan, its participants or its beneficiaries; and if Indemnitee acted in good faith and in a manner Indemnitee reasonably believed to be in the interest of the participants and beneficiaries of an employee benefit plan, Indemnitee shall be deemed to have acted in a manner “not opposed to the best interests of the Company”  as referred to in this Agreement.

(g)Proceeding.  “Proceeding” means any threatened, pending, or completed claim, suit, action, proceeding or alternative dispute resolution mechanism, or any hearing or investigation, whether civil, criminal, administrative, investigative or otherwise, including without limitation any situation which Indemnitee believes in good faith might lead to the institution of any such proceeding.

(h)Reviewing Party.  “Reviewing Party” shall mean, subject to the provisions of Section 3(f), any person or body appointed by the Board in accordance with applicable law to review the Company’s obligations hereunder and under applicable law, which may include a member or members of the Board, Independent Legal Counsel or any other person or body not a party to the particular Proceeding for which Indemnitee is seeking indemnification.

(i)Subsidiary.  “Subsidiary” means any corporation or other entity of which more than ten percent (10%) of the outstanding voting securities or other voting interests is owned directly or indirectly by the Company, and one or more other Subsidiaries, taken as a whole.

2.Maintenance of Liability Insurance.

(a)The Company hereby covenants and agrees with Indemnitee that, subject to Section 2(b), the Company shall obtain and maintain in full force and effect directors’ and officers’ liability insurance (“D&O Insurance”), in reasonable amounts as the Board shall determine from established and reputable insurers with an AM Best rating of A.VI or better, but no less than the amounts in effect upon initial procurement of the D&O Insurance.  In all policies of D&O Insurance, Indemnitee shall be named as an insured.

(b)Notwithstanding the foregoing, the Company shall have no obligation to obtain or maintain D&O Insurance if the Board determines in good faith that the premium costs for such insurance are (i) disproportionate to the amount of coverage provided after giving effect

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to exclusions, and (ii) substantially more burdensome to the Company than the premiums charged to the Company for its initial D&O Insurance.

(c)To the extent the Company maintains liability insurance applicable to directors, officers, employees, agents or fiduciaries, Indemnitee shall be covered by such policies in such a manner as to provide Indemnitee the same rights and benefits as are provided to the most favorably insured of the Company’s directors, if Indemnitee is a director; or of the Company’s officers, if Indemnitee is not a director of the Company but is an officer; or of the Company’s key employees, agents or fiduciaries, if Indemnitee is not an officer or director but is a key employee, agent or fiduciary.

3.Mandatory Indemnification.  The Company shall defend, indemnify and hold harmless Indemnitee to the fullest extent permitted by the Utah Revised Business Corporation Act (the “Act”):

(a)Third Party Actions.  If Indemnitee was or is a party, or is threatened to be made a party, to any Proceeding (other than an action by or in the right of the Company) by reason of the fact that Indemnitee is or was or is claimed to be an Agent of the Company, or by reason of anything done or not done by Indemnitee in any such capacity, or by reason of the fact that Indemnitee personally guaranteed any obligation of the Company at any time, against any and all Expenses and liabilities or any type whatsoever (including, but not limited to, legal fees, judgments, fines, ERISA excise taxes or penalties, and amounts paid in settlement) reasonably incurred by Indemnitee in connection with the investigation, defense, settlement or appeal of such Proceeding, if Indemnitee acted in good faith and in a manner Indemnitee reasonably believed to be in or not opposed to the best interests of the Company, or, with respect to any criminal action or Proceeding, had no reasonable cause to believe such persons conduct was unlawful.  The termination of any action, suit or proceeding by judgment, order, settlement, conviction, or upon a plea of nolo contendere or its equivalent, shall not, of itself, create a presumption that Indemnitee did not act in good faith and in a manner which Indemnitee reasonably believed to be in or not opposed to the best interests of the Company, and, with respect to any criminal action or proceeding, had reasonable cause to believe that Indemnitee’s conduct was unlawful.

(b)Derivative Actions.  If Indemnitee was or is a party, or is threatened to be made a party, to any Proceeding by or in the right of the Company by reason of the fact that Indemnitee is or was an Agent of the Company, or by reason of anything done or not done by Indemnitee in any such capacity, against any and all Expenses and liabilities of any type whatsoever (including, but not limited to, legal fees, judgments, fines, ERISA excise taxes or penalties, and amounts paid in settlement) incurred by Indemnitee in connection with the investigation, defense, settlement or appeal of such Proceeding, if Indemnitee acted in good faith and in a manner Indemnitee reasonably believed to be in or not opposed to the best interests of the Company; except that no indemnification under this subsection shall be made, and Indemnitee shall repay all amounts previously advanced by the Company, in respect of any claim, issue or matter for which Indemnitee is judged in a final, non-appealable decision to be liable to the Company by a court of competent jurisdiction due to willful misconduct in the performance of Indemnitee’s duties to the Company, unless and only to the extent that the court in which such Proceeding was brought shall determine that, despite the adjudication of liability

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but in view of all of the circumstances of the case, Indemnitee is fairly and reasonably entitled to indemnification.  The termination of any action, suit or proceeding by judgment, order, settlement, conviction, or upon a plea of nolo contendere or its equivalent, shall not, of itself, create a presumption that Indemnitee did not act in good faith and in a manner which Indemnitee reasonably believed to be in or not opposed to the best interests of the Company, and, with respect to any criminal action or proceeding, had reasonable cause to believe that Indemnitee’s conduct was unlawful.

(c)Presumptions; Burden of Proof.  In making any determination concerning Indemnitee’s right to indemnification, there shall be a presumption that Indemnitee has satisfied the applicable standard of conduct, and the Company may overcome such presumption only by its adducing clear and convincing evidence to the contrary.  For purposes of this Agreement, the termination of any Proceeding by judgment, order, settlement (whether with or without court approval) or conviction, or upon a plea of nolo contendere, or its equivalent, shall not create a presumption that Indemnitee did not meet any particular standard of conduct or have any particular belief or that a court has determined that indemnification is not permitted by this Agreement or applicable law.  In addition, neither the failure of any Reviewing Party to have made a determination as to whether Indemnitee has met any particular standard of conduct or had any particular belief, nor an actual determination by any Reviewing Party that Indemnitee has not met such standard of conduct or did not have such belief, prior to the commencement of legal proceedings by Indemnitee to secure a judicial determination that Indemnitee should be indemnified under this Agreement under applicable law, shall be a defense to Indemnitee’s claim or create a presumption that Indemnitee has not met any particular standard of conduct or did not have any particular belief.  Any determination concerning Indemnitee’s right to indemnification that is adverse to Indemnitee may be challenged by Indemnitee in the courts of the State of Utah.  No determination by the Company (including without limitation by its directors or any Independent Legal Counsel) that Indemnitee has not satisfied any applicable standard of conduct shall be a defense to any claim by Indemnitee for indemnification or reimbursement or advance payment of Expenses by the Company hereunder or create a presumption that Indemnitee has not met any applicable standard of conduct.

(d)Actions Where Indemnitee Is Deceased.  If Indemnitee was or is a party, or is threatened to be made a party, to any Proceeding by reason of the fact that Indemnitee is or was an Agent of the Company, or by reason of anything done or not done by Indemnitee in any such capacity, and prior to, during the pendency of, or after completion of, such Proceeding, Indemnitee shall die, then the Company shall defend, indemnify and hold harmless the estate, heirs and legatees of Indemnitee against any and all Expenses and liabilities reasonably incurred by or for such persons or entities in connection with the investigation, defense, settlement or appeal of such Proceeding on the same basis as provided for Indemnitee in Sections 3(a) and 3(b) above.

(e)Extent of Insurance.  The Expenses and liabilities covered hereby shall be net of any payments made by D&O Insurance carriers or others.

(f)Review of Indemnification Obligations.  Notwithstanding the foregoing, in the event any Reviewing Party shall have determined (in a written opinion, in any case in which Independent Legal Counsel is the Reviewing Party) that Indemnitee is not entitled to be

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indemnified hereunder under applicable law:  (i) the Company shall have no further obligation under Section 3(a) or 3(b) to make any payments to Indemnitee not made prior to such determination by such Reviewing Party; and (ii) the Company shall be entitled to be reimbursed by Indemnitee (who hereby agrees to reimburse the Company) for all Expenses theretofore paid to Indemnitee to which Indemnitee is not entitled hereunder under applicable law; provided,  however, that if Indemnitee has commenced or thereafter commences legal proceedings in a court of competent jurisdiction to secure a determination that Indemnitee is entitled to be indemnified hereunder under applicable law, any determination made by any Reviewing Party that Indemnitee is not entitled to be indemnified hereunder under applicable law shall not be binding and Indemnitee shall not be required to reimburse the Company for any Expenses theretofore paid in indemnifying Indemnitee until a final judicial determination is made with respect thereto (as to which all rights of appeal therefrom have been exhausted or lapsed).  Indemnitee’s obligation to reimburse the Company for any Expenses shall be unsecured and no interest shall be charged thereon.

(g)Indemnitee Rights on Unfavorable Determination; Binding Effect.  If any Reviewing Party determines that Indemnitee substantively is not entitled to be indemnified hereunder in whole or in part under applicable law, Indemnitee shall have the right to commence litigation seeking an initial determination by the court or challenging any such determination by such Reviewing Party or any aspect thereof, including the legal or factual bases therefor, and the Company hereby consents to service of process and to appear in any such proceeding.  Absent such litigation, any determination by any Reviewing Party shall be conclusive and binding on the Company and Indemnitee.

(h)Selection of Reviewing Party; Change in Control.  A determination, if required by applicable law, with respect to Indemnitee’s entitlement to indemnification shall be made in accordance with the provisions of this paragraph (h).  If there has not been a Change in Control, a Reviewing Party shall be selected by the Board, and if there has been such a Change in Control (other than a Change in Control which has been approved by a majority of the Board who were directors immediately prior to such Change in Control), any Reviewing Party with respect to all matters thereafter arising concerning the rights of Indemnitee to indemnification of Expenses under this Agreement or any other agreement or under the Company’s Articles of Incorporation or Bylaws as now or hereafter in effect, or under any other applicable law, if desired by Indemnitee, shall be Independent Legal Counsel selected by Indemnitee and approved by the Company (which approval shall not be unreasonably withheld).  Such counsel, among other things, shall render its written opinion to the Company and Indemnitee as to whether and to what extent Indemnitee would be entitled to be indemnified hereunder under applicable law and the Company agrees to abide by such opinion.  The Company agrees to pay the reasonable fees of the Independent Legal Counsel referred to above and to indemnify fully such counsel against any and all expenses (including attorneys’ fees), claims, liabilities and damages arising out of or relating to this Agreement or its engagement pursuant hereto.  Notwithstanding any other provision of this Agreement, the Company shall not be required to pay Expenses of more than one Independent Legal Counsel in connection with all matters concerning a single Indemnitee, and such Independent Legal Counsel shall be the Independent Legal Counsel for any or all other Indemnitees unless:  (i) the employment of separate counsel by one or more Indemnitees has been previously authorized by the Board in writing; or (ii) an Indemnitee shall have provided to the Company a written statement that such Indemnitee has reasonably concluded that there may

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be a conflict of interest between such Indemnitee and the other Indemnitees with respect to the matters arising under this Agreement.

4.Partial Indemnification.  If Indemnitee is found under Sections 3, 6 or 9 hereof not to be entitled to indemnification for all of the Expenses relating to a Proceeding, the Company shall indemnify Indemnitee for any portion of such Expenses not specifically precluded by the operation of such Sections 3, 6 or 9.

5.Indemnification Procedures; Mandatory Advancement of Expenses.

(a)Promptly after receipt by Indemnitee of notice to him or her of the commencement or threat of any Proceeding covered hereby, Indemnitee shall notify the Company of the commencement or threat thereof, provided that any failure to so notify shall not relieve the Company of any of its obligations hereunder, except to the extent that such failure prejudices the Company’s ability to perform its obligations hereunder.

(b)If, at the time of the receipt of a notice pursuant to Section 5(a) above, the Company has D&O Insurance in effect, the Company shall give prompt notice of the Proceeding or claim to its insurers in accordance with the procedures set forth in the applicable policies.  The Company shall thereafter take all reasonably necessary action to cause such insurers to pay all amounts payable as a result of such Proceeding in accordance with the terms of such policies.

(c)Indemnitee shall be entitled to retain one or more counsel from time to time selected by Indemnitee in Indemnitee’s reasonable discretion to act as its counsel in and for the investigation, defense, settlement or appeal of each Proceeding.  The Company shall not waive any privilege or right available to Indemnitee in any such Proceeding.

(d)The Company shall bear all reasonable fees and Expenses (including invoices for advance retainers) of such counsel, and all reasonable fees and Expenses invoiced by other persons or entities, in connection with the investigation, defense, settlement or appeal of each such Proceeding.  Such fees and Expenses are referred to herein as “Covered Expenses.”

(e)Until a determination to the contrary under Section 6 hereof is made, the Company shall advance all Covered Expenses in connection with each Proceeding.  Indemnitee shall qualify for advances upon the execution and delivery to the Company of this Agreement which shall constitute an undertaking providing that Indemnitee undertakes to the fullest extent permitted by law to repay the advance if and to the extent that it is ultimately determined by a court of competent jurisdiction in a final judgment, not subject to appeal, that Indemnitee is not entitled to be indemnified by the Company.  No other form of undertaking shall be required other than the execution of this Agreement.  Advances shall be unsecured and interest free.  Advances shall be made without regard to Indemnitee’s ability to repay the expenses and without regard to Indemnitee’s ultimate entitlement to indemnification under the other provisions of this Agreement.

(f)Each advance to be made hereunder shall be paid by the Company to Indemnitee within ten (10) business days following delivery of a written request therefor by Indemnitee to the Company.

Indemnification Agreement:  [Director Name] Page 7 of 13

(g)The Company acknowledges the potentially severe damage to Indemnitee should the Company fail timely to make such advances to Indemnitee.

(h)The Company shall not settle any proceeding if, as a result of such settlement, any fine or obligation is imposed on Indemnitee without Indemnitee’s prior written consent.

(i)If Indemnitee is the subject of or is implicated in any way during any proceeding, the Company will share with Indemnitee any information it has turned over to any third parties concerning the investigation.

(j)The knowledge and/or actions, or failure to act, of any other Agent of the Company shall not be imputed to Indemnitee for purposes of determining the right to indemnification under this Agreement.

(k)For purposes of any determination of good faith, Indemnitee shall be deemed to have acted in good faith if Indemnitee’s action is based on the records or books of account of the Company, including financial statements, or on information supplied to Indemnitee by the officers of the Company (other than Indemnitee) in the course of their duties, or on the advice of legal counsel for the Company or the Board or counsel selected by any committee of the Board or on information or records given or reports made to the Company by an independent certified public accountant or by an appraiser, investment banker, compensation consultant, or other expert selected with reasonable care by the Company or the Board or any committee of the Board.  The provisions of this Section 5(k) shall not be deemed to be exclusive or to limit in any way the other circumstances in which Indemnitee may be deemed to have met the applicable standard of conduct.

(l)Notice to Insurers.  If, at the time of the receipt by the Company of a notice of a Proceeding subject to Section 3(a) or 3(b) hereof, the Company has D&O Insurance or other liability insurance in effect which may cover such Proceeding, the Company shall give prompt notice of the commencement of such Proceeding to the insurers in accordance with the procedures set forth in the respective policies.  The Company shall thereafter take all reasonably necessary action to cause such insurers to pay, on behalf of Indemnitee, all amounts payable as a result of such Proceeding in accordance with the terms of such policies.

(m)Selection of Counsel.  In the event the Company shall be obligated hereunder to provide indemnification for or make any advancement of Expenses with respect to the Expenses of any Proceeding, the Company, if appropriate, shall be entitled to assume the defense of such Proceeding with counsel selected by the Company, subject to approval by Indemnitee (which approval shall not be unreasonably withheld), upon the delivery to Indemnitee of written notice of the Company’s election to do so.  After delivery of such notice and the retention of such counsel by the Company, the Company will not be liable to Indemnitee under this Agreement for any fees or expenses of separate counsel subsequently retained by or on behalf of Indemnitee with respect to the same Proceeding; provided that:  (i) Indemnitee shall have the right to employ Indemnitee’s separate counsel in any such Proceeding at Indemnitee’s expense; and (ii) if (A) the employment of separate counsel by Indemnitee has been previously authorized by the Company, (B) Indemnitee shall have reasonably concluded that there may be a

Indemnification Agreement:  [Director Name] Page 8 of 13

conflict of interest between the Company and Indemnitee in the conduct of any such defense, or (C) the Company shall not continue to retain such counsel to defend such Proceeding, then the fees and expenses of Indemnitee’s separate counsel shall be Expenses for which Indemnitee may receive indemnification or advancement of Expenses hereunder.

6.Determination of Right to Indemnification.

(a)To the extent Indemnitee has been successful on the merits or otherwise in defense of any Proceeding, claim, issue or matter covered hereby, Indemnitee need not repay any of the Expenses advanced in connection with the investigation, defense or appeal of such Proceeding.

(b)Indemnitee shall have the right to advancement by the Company prior to the final disposition of any Proceeding of any and all Expenses relating to, arising out of or resulting from any Proceeding paid or incurred by Indemnitee or which Indemnitee determines are reasonably likely to be paid or incurred by Indemnitee.

(c)Subject to the provisions of Section 3(f), notwithstanding a determination by a Reviewing Party or a court that Indemnitee is not entitled to indemnification with respect to a specific Proceeding, Indemnitee shall have the right to apply to the courts of the State of Utah for the purpose of enforcing Indemnitee’s right to indemnification pursuant to this Agreement.

(d)Subject to the provisions of Section 3(h),  the Company shall indemnify Indemnitee against all Expenses reasonably incurred by Indemnitee in connection with any Proceeding under Sections 6(b) or 6(c) and against all Expenses reasonably incurred by Indemnitee in connection with any other Proceeding between the Company and Indemnitee involving the interpretation or enforcement of the rights of Indemnitee under this Agreement unless a court of competent jurisdiction finds that each of the material claims and/or defenses of Indemnitee in any such Proceeding were frivolous or made in bad faith.

(e)The Company hereby agrees to indemnify Indemnitee to the fullest extent permitted by the Act, notwithstanding that such indemnification is not specifically authorized by the other provisions of this Agreement, the Company’s Articles of Incorporation, the Company’s Bylaws or by statute.  In the event of any change after the date of this Agreement in any applicable law, statute or rule which expands the right of a Utah corporation to indemnify a member of its board of directors or an officer, employee, agent or fiduciary, it is the intent of the parties hereto that Indemnitee shall enjoy by this Agreement the greater benefits afforded by such change.  In the event of any change in any applicable law, statute or rule which narrows the right of a Utah corporation to indemnify a member of its board of directors or an officer, employee, agent or fiduciary, such change, to the extent not otherwise required by such law, statute or rule to be applied to this Agreement, shall have no effect on this Agreement or the parties’ rights and obligations hereunder except as set forth in Section 9 hereof.

(f)Nonexclusivity.  The indemnification and the payment of Expense advances provided by this Agreement shall be in addition to any rights to which Indemnitee may be entitled under the Company’s Articles of Incorporation, its Bylaws, any other agreement, any vote of shareholders or disinterested directors, the Act, or otherwise.  The indemnification and

Indemnification Agreement:  [Director Name] Page 9 of 13

the payment or advancement of Expenses provided under this Agreement shall continue as to Indemnitee for any action taken or not taken while serving in an indemnified capacity even though subsequent thereto Indemnitee may have ceased to serve in such capacity.

(g)No Duplication of Payments.  The Company shall not be liable under this Agreement to make any payment in connection with any Proceeding to the extent Indemnitee has otherwise actually received payment (under any insurance policy, provision of the Company’s Articles of Incorporation, Bylaws or otherwise) of the amounts otherwise payable hereunder.

(h)Partial Indemnification.  If Indemnitee is entitled under any provision of this Agreement to indemnification by the Company for some or a portion of Expenses incurred in connection with any Proceeding, but not, however, for all of the total amount thereof, the Company shall nevertheless indemnify Indemnitee for the portion of such Expenses to which Indemnitee is entitled.

7.Articles of Incorporation and By-Laws.  The Company agrees that the Company’s Articles of Incorporation and Bylaws in effect on the date hereof shall not be amended to reduce, limit, hinder or delay (a) the rights of Indemnitee granted hereby, or (b) the ability of the Company to indemnify Indemnitee as required hereby.  The Company further agrees that it shall exercise the powers granted to it under its Articles of Incorporation, its Bylaws and by applicable law to indemnify Indemnitee to the fullest extent possible as required hereby.

8.Witness Expenses.  The Company agrees to compensate Indemnitee for the reasonable value of Indemnitee’s time spent, and to reimburse Indemnitee for all Expenses (including reasonable attorneys’ fees and travel costs) reasonably incurred by Indemnitee, in connection with being a witness, or if Indemnitee is threatened to be made a witness, with respect to any Proceeding, by reason of Indemnitee serving or having served as an Agent of the Company.

9.Exceptions.  Notwithstanding any other provision hereunder to the contrary, the Company shall not be obligated pursuant to the terms of this Agreement:

(a)Claims Initiated by Indemnitee.  To indemnify or advance Expenses to Indemnitee with respect to Proceedings or claims initiated or brought voluntarily by Indemnitee and not by way of defense (other than:  (i) Proceedings under Sections 6(b) or 6(c); (ii) proceedings brought to establish or enforce a right to indemnification under this Agreement or the provisions of the Company’s Articles of Incorporation or Bylaws unless a court of competent jurisdiction determines that each of the material assertions made by Indemnitee in such Proceeding were not made in good faith or were frivolous; or (iii) proceedings or claims instituted by Indemnitee with the approval by the Board); or

(b)Unauthorized Settlements.  To indemnify Indemnitee under this Agreement for any amounts paid in settlement of a Proceeding covered hereby without the prior written consent of the Company to such settlement, which consent will not be unreasonably withheld provided that the Company’s consent is not required if the Company is refusing to indemnify or advance Expenses to Indemnitee.

Indemnification Agreement:  [Director Name] Page 10 of 13

10.Non-exclusivity.  This Agreement is not the exclusive arrangement between the Company and Indemnitee regarding the subject matter hereof and shall not diminish or affect any other rights which Indemnitee may have under any provision of law, the Company’s Articles of Incorporation or Bylaws, under other agreements, or otherwise.

11.Continuation After Term; Binding Effect.  Indemnitee’s rights hereunder shall continue after Indemnitee has ceased acting an Agent of the Company and the benefits hereof shall inure to the benefit of the heirs, executors and administrators of Indemnitee.  The Company shall require and cause any successor (whether direct or indirect by purchase, merger, consolidation or otherwise) to all, substantially all or a substantial part, of the business and/or assets of the Company, by written agreement in form and substance satisfactory to Indemnitee, expressly to assume and agree to perform this Agreement in the same manner and to the same extent that the Company would be required to perform if no such succession had taken place.

12.Interpretation of Agreement.  This Agreement shall be interpreted and enforced so as to provide indemnification to Indemnitee to the fullest extent now or hereafter permitted by the Act.

13.Severability.  If any provision or provisions of this Agreement shall be held to be invalid, illegal or unenforceable, provisions of the Agreement shall not in any way be affected or impaired thereby, and to the fullest extent possible, the provisions of this Agreement shall be construed or altered by the court so as to remain enforceable and to provide Indemnitee with as many of the benefits contemplated hereby as are permitted under the Act.

14.Counterparts, Modification and Waiver.  This Agreement may be signed in counterparts.  This Agreement constitutes a separate agreement between the Company and Indemnitee and may be supplemented or amended as to Indemnitee only by a written instrument signed by the Company and Indemnitee, with such amendment binding only the Company and Indemnitee.  All waivers must be in a written document signed by the party to be charged.  No waiver of any of the provisions of this Agreement shall be implied by the conduct of the parties.  A waiver of any right hereunder shall not constitute a waiver of any other right hereunder.

15.Notices.  All notices, demands, consents, requests, approvals and other communications required or permitted hereunder shall be in writing and shall be deemed to have been properly given if hand delivered (effective upon receipt or when refused), or if sent by a courier freight prepaid (effective upon receipt or when refused), in the case of the Company, at the addresses listed below, or to such other addresses as the parties may notify each other in writing.

To Company:	SkyWest, Inc. Attention: Chief Executive Officer 444 South River Road St. George, Utah 84790
To Indemnitee:	At Indemnitee’s residence address and facsimile number on the records of the Company from time to time.

Indemnification Agreement:  [Director Name] Page 11 of 13

16.Evidence of Coverage.  Upon request by Indemnitee, the Company shall provide evidence of the liability insurance coverage required by this Agreement.  The Company shall promptly notify Indemnitee of any change in the Company’s D&O Insurance coverage.

17.Governing Law.  This Agreement shall be governed by and construed in accordance with the internal laws of the State of Utah.

18.Consent to Jurisdiction.  The Company and Indemnitee each hereby irrevocably consent to the jurisdiction of the courts of the State of Utah for all purposes in connection with any action or proceeding which arises out of or relates to this Agreement and agree that any action instituted under this Agreement shall be commenced, prosecuted and continued only in the federal and state courts located in the State of Utah in and for Salt Lake County, which shall be the exclusive and only proper forum for adjudicating such a claim.

19.No Construction as Employment Agreement.  Nothing contained in this Agreement shall be construed as giving Indemnitee any right to be retained in the employ of the Company or any of its subsidiaries or affiliated entities.

[Remainder of Page Intentionally Left Blank;
Signatures appear on the following page.]

Indemnification Agreement:  [Director Name] Page 12 of 13

IN WITNESS WHEREOF, the parties hereto have entered into this Indemnification Agreement effective as of the date first above written. 

SkyWest INC.
By:
	Jerry C. Atkin, Chief Executive Officer
INDEMNITEE:
[DIRECTOR NAME]

Indemnification Agreement:  [Director Name] S-13

EX-23.1

Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the Registration Statements (Form S 8 No.’s 333 200540, 333 171595, 333 161396, 333 135239, 333 134379, 333 133470, 333 130848, 333 130846, 33 60173 and 333 70408) pertaining to the SkyWest, Inc. 2010 Long Term Incentive Plan, SkyWest, Inc. 2009 Employee Stock Purchase Plan, Atlantic Southeast Airlines, Inc. Investment Savings Plan (as amended), SkyWest, Inc. 2006 Long Term Incentive Plan (as amended), 2004 Restatement of the SkyWest, Inc. Employees’ Retirement Plan (as amended), SkyWest, Inc. 2006 Employee Stock Purchase Plan (as amended), SkyWest, Inc. 1995 Employee Stock Purchase Plan (as amended), SkyWest, Inc. 2001 Allshare Stock Option Plan and SkyWest, Inc. Executive Stock Incentive Plan, respectively, of SkyWest, Inc. and subsidiaries, of our reports dated February 26, 2016, with respect to the consolidated financial statements and schedule of SkyWest, Inc. and subsidiaries, and the effectiveness of internal control over financial reporting of SkyWest, Inc. and subsidiaries, included in this Annual Report (Form10 K) for the year ended December 31, 2015.

/s/ Ernst & Young LLP

Salt Lake City, Utah

February 26, 2016

EX-31.1

Exhibit 31.1

CERTIFICATION

I, Russell A. Childs, certify that:

1.I have reviewed this Annual Report on Form 10‑K of SkyWest, Inc. for the year ended December 31, 2015;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of and for the periods presented in this report.

4.The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a‑15(e) and 15d‑15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a‑15(f) and 15(d)‑15(f)) for the registrant and have:

a)designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b)designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with general accepted accounting principles;

c)evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d)disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officers and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a)all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b)any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: February 26, 2016

Chief Executive Officer

/s/ Russell A. Childs

Russell A. Childs
Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Robert J. Simmons, certify that:

1.I have reviewed this Annual Report on Form 10‑K of SkyWest, Inc. for the year ended December 31, 2015;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of and for the periods presented in this report.

4.The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a‑15(e) and 15d‑15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a‑15(f) and 15(d)‑15(f)) for the registrant and have:

a)designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b)designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with general accepted accounting principles;

c)evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d)disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officers and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a)all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b)any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: February 26, 2016

ob
Chief Accounting Officer

/s/ ROBERT J. SIMMONS

Robert J. Simmons

Chief Financial Officer

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES‑OXLEY ACT OF 2002

In connection with the Annual Report on Form 10‑K of SkyWest, Inc. (the “Company”) for the year ended December 31, 2015, as filed with the Securities and Exchange Commission (the “Report”), I, RussellA.  Childs, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes‑Oxley Act of 2002, that, to the best of my knowledge:

(1)The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2)The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

uss
Chief Executive Officer
February 18, 2015

/s/ RUSSELL A. CHILDS

Russell A. Childs
Chief Executive Officer
February 26, 2016

This certification accompanies the Report pursuant to Section 906 of the Sarbanes‑Oxley Act of 2002 and shall not, except to the extent required by the Sarbanes‑Oxley Act of 2002, be deemed filed by the Company for purposes of Section 18 of the Securities Exchange Act of 1934, as amended.

A signed original of this written statement required by Section 906 of the Sarbanes‑Oxley Act of 2002 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT

TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES‑OXLEY ACT OF 2002

In connection with the Annual Report on Form 10‑K of SkyWest, Inc. (the “Company”) for the year ended December 31, 2015, as filed with the Securities and Exchange Commission (the “Report”), I, Robert J. Simmons, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes‑Oxley Act of 2002, that, to the best of my knowledge:

(1)The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2)The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Obert
Chief Accounting Officer
February 18, 2015

/s/ ROBERT J. SIMMONS

Robert J. Simmons
Chief Financial Officer
February 26, 2016

This certification accompanies the Report Amendment pursuant to Section 906 of the Sarbanes‑Oxley Act of 2002 and shall not, except to the extent required by the Sarbanes‑Oxley Act of 2002, be deemed filed by the Company for purposes of Section 18 of the Securities Exchange Act of 1934, as amended.

A signed original of this written statement required by Section 906 of the Sarbanes‑Oxley Act of 2002 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

XML

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2015	Feb. 16, 2016	Jun. 30, 2015
Document and Entity Information
Entity Registrant Name	SKYWEST INC
Entity Central Index Key	0000793733
Document Type	10-K
Document Period End Date	Dec. 31, 2015
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Public Float			$ 759,240,572
Entity Common Stock, Shares Outstanding		51,127,542
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	FY

XML

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
CURRENT ASSETS:
Cash and cash equivalents	$ 203,035	$ 132,275
Marketable securities	286,668	415,273
Restricted cash	8,216	11,582
Income tax receivable	2,871	2,779
Receivables, net	62,162	83,099
Inventories, net	140,312	137,452
Prepaid aircraft rents	195,216	196,348
Deferred tax assets	100,730	94,385
Other current assets	18,360	16,308
Total current assets	1,017,570	1,089,501
PROPERTY AND EQUIPMENT:
Aircraft and rotable spares	5,242,790	4,608,663
Deposits on aircraft	38,150	40,000
Buildings and ground equipment	275,788	274,900
Total property and equipment, gross	5,556,728	4,923,563
Less-accumulated depreciation and amortization	(2,085,981)	(1,902,375)
Total property and equipment, net	3,470,747	3,021,188
OTHER ASSETS
Intangible assets, net	10,499	12,748
Non-current prepaid aircraft rents	229,180	201,502
Other assets	74,890	84,989
Total other assets	314,569	299,239
Total assets	4,802,886	4,409,928
CURRENT LIABILITIES:
Current maturities of long-term debt	272,027	211,821
Accounts payable	279,864	270,097
Accrued salaries, wages and benefits	138,291	138,902
Accrued aircraft rents	3,226	3,303
Taxes other than income taxes	17,176	17,457
Other current liabilities	40,802	42,775
Total current liabilities	751,386	684,355
OTHER LONG-TERM LIABILITIES	56,191	49,625
LONG-TERM DEBT, net of current maturities	1,676,776	1,533,990
DEFERRED INCOME TAXES PAYABLE	749,575	669,385
DEFERRED AIRCRAFT CREDITS	$ 62,523	$ 72,227
COMMITMENTS AND CONTINGENCIES (Note 5)
STOCKHOLDERS' EQUITY:
Common stock, no par value, 120,000,000 shares authorized; 79,020,371 and 77,951,411 shares issued, respectively	$ 641,643	$ 626,521
Retained earnings	1,275,142	1,165,478
Treasury stock, at cost, 28,015,386 and 26,765,386 shares, respectively	(410,090)	(391,364)
Accumulated other comprehensive income (loss)	(260)	(289)
Total stockholders' equity	1,506,435	1,400,346
Total liabilities and stockholders' equity	$ 4,802,886	$ 4,409,928

XML

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2015	Dec. 31, 2014
CONSOLIDATED BALANCE SHEETS
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized	120,000,000	120,000,000
Common stock, shares issued	79,020,371	77,951,411
Treasury stock, at cost, shares	28,015,386	26,765,386

XML

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
OPERATING REVENUES:
Passenger	$ 3,030,023	$ 3,168,000	$ 3,239,525
Ground handling and other	65,540	69,447	58,200
Total operating revenues	3,095,563	3,237,447	3,297,725
OPERATING EXPENSES:
Salaries, wages and benefits	1,203,312	1,258,155	1,211,307
Aircraft maintenance, materials and repairs	604,863	682,773	686,381
Aircraft rentals	273,696	305,334	325,360
Depreciation and amortization	264,507	259,642	245,005
Aircraft fuel	118,124	193,247	193,513
Ground handling services	82,694	123,917	129,119
Special items		74,777
Station rentals and landing fees	54,167	51,024	114,688
Other operating expenses	259,685	263,730	239,241
Total operating expenses	2,861,048	3,212,599	3,144,614
OPERATING INCOME	234,515	24,848	153,111
OTHER INCOME (EXPENSE):
Interest income	1,997	4,096	3,689
Interest expense	(75,850)	(65,995)	(68,658)
Other, net	33,660	20,708	10,390
Total other expense, net	(40,193)	(41,191)	(54,579)
INCOME (LOSS) BEFORE INCOME TAXES	194,322	(16,343)	98,532
PROVISION FOR INCOME TAXES	76,505	7,811	39,576
NET INCOME (LOSS)	$ 117,817	$ (24,154)	$ 58,956
BASIC EARNINGS (LOSS) PER SHARE (in dollars per share)	$ 2.31	$ (0.47)	$ 1.14
DILUTED EARNINGS (LOSS) PER SHARE (in dollars per share)	$ 2.27	$ (0.47)	$ 1.12
Weighted average common shares:
Basic (in shares)	51,077	51,237	51,688
Diluted (in shares)	51,825	51,237	52,422
COMPREHENSIVE INCOME (LOSS):
Net Income (loss)	$ 117,817	$ (24,154)	$ 58,956
Proportionate share of equity method investee foreign currency translation adjustment, net of taxes		(1,129)	66
Net unrealized appreciation (depreciation) on marketable securities, net of taxes	29	(719)	(13)
TOTAL COMPREHENSIVE INCOME (LOSS)	$ 117,846	$ (26,002)	$ 59,009

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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Common Stock Including Additional Paid in Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Balance at Dec. 31, 2012	$ 609,763	$ 1,147,117	$ (371,211)	$ 1,506	$ 1,387,175
Balance (in shares) at Dec. 31, 2012	76,713		(25,280)
Increase (Decrease) in Stockholders' Equity
Net Income (loss)		58,956			58,956
Proportionate share of other companies foreign currency translation adjustment, net of tax of $8 and $678 for 2013, and 2014, respectively				66	66
Net unrealized depreciation on marketable securities net of tax of $43, $437 and $18 for 2013, 2014 and 2015, respectively				(13)	(13)
Exercise of common stock options and issuance of restricted stock	$ 835				835
Exercise of common stock options and issuance of restricted stock (in shares)	313
Sale of common stock under employee stock purchase plan	$ 3,696				3,696
Sale of common stock under employee stock purchase plan (in shares)	300
Stock based compensation expense related to the issuance of stock options and restricted stock	$ 4,363				4,363
Tax deficiency from exercise of common stock options	(146)				(146)
Treasury stock purchases			$ (11,739)		(11,739)
Treasury stock purchases (in shares)			(816)
Cash dividends declared ( $0.16 per share)		(8,254)			(8,254)
Balance at Dec. 31, 2013	$ 618,511	1,197,819	$ (382,950)	1,559	1,434,939
Balance (in shares) at Dec. 31, 2013	77,326		(26,096)
Increase (Decrease) in Stockholders' Equity
Net Income (loss)		(24,154)			(24,154)
Proportionate share of other companies foreign currency translation adjustment, net of tax of $8 and $678 for 2013, and 2014, respectively				(1,129)	(1,129)
Net unrealized depreciation on marketable securities net of tax of $43, $437 and $18 for 2013, 2014 and 2015, respectively				(719)	(719)
Exercise of common stock options and issuance of restricted stock	$ 287				287
Exercise of common stock options and issuance of restricted stock (in shares)	330
Sale of common stock under employee stock purchase plan	$ 3,752				3,752
Sale of common stock under employee stock purchase plan (in shares)	295
Stock based compensation expense related to the issuance of stock options and restricted stock	$ 5,318				5,318
Tax deficiency from exercise of common stock options	(1,347)				(1,347)
Treasury stock purchases			$ (8,414)		(8,414)
Treasury stock purchases (in shares)			(669)
Cash dividends declared ( $0.16 per share)		(8,187)			(8,187)
Balance at Dec. 31, 2014	$ 626,521	1,165,478	$ (391,364)	(289)	1,400,346
Balance (in shares) at Dec. 31, 2014	77,951		(26,765)
Increase (Decrease) in Stockholders' Equity
Net Income (loss)		117,817			117,817
Net unrealized depreciation on marketable securities net of tax of $43, $437 and $18 for 2013, 2014 and 2015, respectively				29	29
Exercise of common stock options and issuance of restricted stock	$ 8,490				8,490
Exercise of common stock options and issuance of restricted stock (in shares)	815
Sale of common stock under employee stock purchase plan	$ 3,430				3,430
Sale of common stock under employee stock purchase plan (in shares)	254
Stock based compensation expense related to the issuance of stock options and restricted stock	$ 5,368				5,368
Tax deficiency from exercise of common stock options	(2,166)				(2,166)
Treasury stock purchases			$ (18,726)		(18,726)
Treasury stock purchases (in shares)			(1,250)
Cash dividends declared ( $0.16 per share)		(8,153)			(8,153)
Balance at Dec. 31, 2015	$ 641,643	$ 1,275,142	$ (410,090)	$ (260)	$ 1,506,435
Balance (in shares) at Dec. 31, 2015	79,020		(28,015)

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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY
Proportionate share of other companies foreign currency translation adjustment, tax		$ 678	$ 8
Net unrealized appreciation (depreciation) on marketable securities, tax	$ (18)	$ (437)	$ 43
Cash dividends declared (in dollars per share)	$ 0.16	$ 0.16	$ 0.16

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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income (loss)	$ 117,817	$ (24,154)	$ 58,956
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	264,507	259,642	245,005
Stock based compensation expense	5,368	5,318	4,363
Loss on sale of property and equipment		4,016
Gain from equity ownership in TRIP and AirMekong airlines		(24,922)	(10,830)
Gain from early extinguishment of debt	(33,660)
Capitalized Brasilia EMB-120 engine overhauls		(18,812)	(29,606)
Special items		74,777
Net increase in deferred income taxes	73,844	5,054	38,007
Changes in operating assets and liabilities:
Decrease in restricted cash	3,366	637	7,334
Decrease in receivables	21,076	25,540	18,916
Increase in income tax receivable	(92)	(1,939)	(840)
Increase in inventories	(2,860)	(890)	(24,513)
Increase in other current assets and prepaid aircraft rents	(28,598)	(25,985)	(31,578)
Decrease in deferred aircraft credits	(8,635)	(7,672)	(8,432)
Increase in accounts payable and accrued aircraft rents	9,690	5,852	17,594
Increase (decrease) in other current liabilities	(1,719)	9,077	5,514
NET CASH PROVIDED BY OPERATING ACTIVITIES	420,104	285,539	289,890
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of marketable securities	(1,170,439)	(326,964)	(488,564)
Sales of marketable securities	1,299,069	398,148	557,424
Proceeds from the sale of aircraft, property and equipment	10,308	9,473	293
Proceeds from installment payment of equity shares of TRIP		17,237	16,658
Acquisition of property and equipment:
Aircraft and rotable spare parts	(710,871)	(653,473)	(102,499)
Deposits on aircraft			(40,000)
Buildings and ground equipment	(10,405)	(21,966)	(9,502)
Return of deposits on aircraft	1,850
Decrease (increase) in other assets	10,772	(7,681)	229
NET CASH USED IN INVESTING ACTIVITIES	(569,716)	(585,226)	(65,961)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of long-term debt	591,881	460,600
Principal payments on long-term debt	(354,277)	(185,357)	(171,453)
Net proceeds from issuance of common stock	9,754	2,692	4,385
Purchase of treasury stock	(18,726)	(8,414)	(11,739)
Payment of cash dividends	(8,260)	(8,195)	(8,258)
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	220,372	261,326	(187,065)
Increase (decrease) in cash and cash equivalents	70,760	(38,361)	36,864
Cash and cash equivalents at beginning of year	132,275	170,636	133,772
CASH AND CASH EQUIVALENTS AT END OF YEAR	203,035	132,275	170,636
Cash paid during the year for:
Interest, net of capitalized amounts	80,657	67,763	71,323
Income taxes	$ 5,104	$ 2,066	$ 3,678

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Nature of Operations and Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2015

Nature of Operations and Summary of Significant Accounting Policies

Nature of Operations and Summary of Significant Accounting Policies

(1) Nature of Operations and Summary of Significant Accounting Policies

SkyWest, Inc. (the “Company”), through its subsidiaries, SkyWest Airlines, Inc. (“SkyWest Airlines”) and ExpressJet Airlines, Inc. (“ExpressJet”), operates the largest regional airline in the United States. As of December 31, 2015, SkyWest and ExpressJet offered scheduled passenger and air freight service with approximately3,400 total daily departures to different destinations in the United States, Canada, Mexico and the Caribbean. Additionally, the Company provides ground handling services for other airlines throughout its system. As of December 31, 2015, the Company had a combined fleet of 702 aircraft consisting of the following:

	CRJ200	CRJ700	CRJ900	ERJ135	ERJ145	E175	EMB120	Total
United	83	70	—	5	166	40	—	364
Delta	111	60	64	—	—	—	—	235
American	31	—	—	—	16	—	—	47
Alaska	—	9	—	—	—	5	—	14
Aircraft in scheduled service	225	139	64	5	182	45	—	660
Subleased to an un-affiliated entity	2	—	—	—	—	—	—	2
Other*	10	—	—	4	—	—	26	40
Total	237	139	64	9	182	45	26	702

*Other aircraft consisted of leased aircraft removed from service that were in the process of being returned to the lessor and owned aircraft removed from service that were held for sale.

For the year ended December 31, 2015, approximately 57.5% of the Company’s aggregate capacity was operated for United, approximately 33.2% was operated for Delta, approximately 6.4% was operated for American, including the flights operated for US Airways, and approximately 2.9% was operated for Alaska.  

SkyWest Airlines has been a code-share partner with Delta since 1987 and United since 1997. SkyWest Airlines has been a code-share partner with Alaska since 2011 and American since 2012. As of December 31, 2015, SkyWest Airlines operated as a Delta Connection carrier in Salt Lake City and Minneapolis, a United Express carrier in Los Angeles, San Francisco, Denver, Houston, Chicago and the Pacific Northwest, an Alaska carrier in the Pacific Northwest and an American carrier in Los Angeles and Phoenix.

On November 17, 2011, the Company’s wholly-owned subsidiaries, Atlantic Southeast Airlines, Inc. and ExpressJet Airlines, Inc., consolidated their operations under a single operating certificate, and on December 31, 2012, Atlantic Southeast Airlines, Inc. and ExpressJet Airlines, Inc. were merged, with the surviving corporation named ExpressJet Airlines, Inc. (the “ExpressJet Combination”). In the following Notes to Consolidated Financial Statements, “Atlantic Southeast” refers to Atlantic Southeast Airlines, Inc. for periods prior to the ExpressJet Combination, “ExpressJet Delaware” refers to ExpressJet Airlines, Inc., a Delaware corporation, for periods prior to the ExpressJet Combination, and “ExpressJet” refers to ExpressJet Airlines, Inc., the Utah corporation resulting from the combination of Atlantic Southeast and ExpressJet Delaware, for periods subsequent to the ExpressJet Combination. Atlantic Southeast had been a code-share partner with Delta in Atlanta since 1984. As of December 31, 2015, ExpressJet operated as a Delta Connection carrier in Atlanta and Detroit, a United Express carrier in Chicago (O’Hare), Cleveland, Newark and Houston and an American carrier in Dallas.

Basis of Presentation

The Company’s consolidated financial statements include the accounts of SkyWest, Inc. and its subsidiaries, including SkyWest Airlines and ExpressJet, with all inter‑company transactions and balances having been eliminated.

In preparing the accompanying consolidated financial statements, the Company has reviewed, as determined necessary by the Company’s management, events that have occurred after December 31, 2015, through the filing date of the Company’s annual report with the U.S. Securities and Exchange Commission.

Use of Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Cash and Cash Equivalents

The Company considers all highly liquid investments with an original maturity of three months or less to be cash equivalents. The Company classified  $8.2 million and $11.6 million of cash as restricted cash collateralizing letters of credit under the Company’s workers’ compensation insurance policy and classified it accordingly in the consolidated balance sheets as of December 31, 2015 and 2014, respectively.

Marketable Securities

The Company’s investments in marketable debt and equity securities are deemed by management to be available-for-sale and are reported at fair market value with the net unrealized appreciation (depreciation) reported as a component of accumulated other comprehensive income (loss) in stockholders’ equity. At the time of sale, any realized appreciation or depreciation, calculated by the specific identification method, is recognized in other income and expense. The Company’s position in marketable securities as of December 31, 2015 and 2014 was as follows (in thousands):

			Gross unrealized		Gross unrealized
At December 31, 2015	Amortized Cost		holding gains		holding losses		Fair market value
Total cash and cash equivalents	$	203,035	$	—	$	—	$	203,035
Available-for-sale securities:
Bond and bond funds	$	286,857	$	—	$	(220)	$	286,637
Asset backed securities		30		1		—		31
Total available-for-sale securities	$	286,887	$	1	$	(220)	$	286,668
Total cash and cash equivalents and available for sale securities	$	489,922	$	1	$	(220)	$	489,703

			Gross unrealized			Gross unrealized
At December 31, 2014	Amortized Cost		holding gains		holding losses		Fair market value
Total cash and cash equivalents	$	132,275	$	—	$	—	$	132,275
Available-for-sale securities:
Bond and bond funds	$	410,618	$	9	$	(464)	$	410,163
Asset backed securities		5,108		3		(1)		5,110
Total available-for-sale securities	$	415,726	$	12	$	(465)	$	415,273
Total cash and cash equivalents and available for sale securities	$	548,001	$	12	$	(465)	$	547,548

Marketable securities had the following maturities as of December 31, 2015 (in thousands):

Maturities	Amount
Year 2016	$	231,298
Years 2017 through 2020		55,370

As of December 31, 2015 and 2014, the Company had classified $286.7 million and $415.3 million of marketable securities, respectively, as short‑term since it had the intent to maintain a liquid portfolio and the ability to redeem the securities within one year. The Company has classified approximately $2.3 million and $2.3 million of investments as non‑current and has identified them as “Other assets” in the Company’s consolidated balance sheet as of December 31, 2015 and 2014, respectively (see Note 6).

Inventories

Inventories include expendable parts, fuel and supplies and are valued at cost (FIFO basis) less an allowance for obsolescence based on historical results and management’s expectations of future operations. Expendable inventory parts are charged to expense as used. An obsolescence allowance for flight equipment expendable parts is accrued based on estimated lives of the corresponding fleet types and salvage values. The inventory allowance as of December 31, 2015 and 2014 was $13.9 million and $11.6 million, respectively. These allowances are based on management estimates, which can be modified based on future changes in circumstances.

Property and Equipment

Property and equipment are stated at cost and depreciated over their useful lives to their estimated residual values using the straight‑line method as follows:

Assets	Depreciable Life	Residual Value
New Aircraft	18 years	30	%
Used Aircraft and rotable spares	3 – 10 years	0 - 30	%
Ground equipment	5 – 10 years	0	%
Office equipment	5 – 7 years	0	%
Leasehold improvements	Shorter of 15 years or lease term	0	%
Buildings	20 – 39.5 years	0	%

Impairment of Long-Lived Assets

As of December 31, 2015, the Company had approximately  $5.6 billion of property and equipment and related assets. Additionally, as of December 31, 2015, the Company had approximately $10.5 million in intangible assets. In accounting for these long‑lived and intangible assets, the Company makes estimates about the expected useful lives of the assets, the expected residual values of certain of these assets, and the potential for impairment based on the fair value of the assets and the cash flows they generate. On September 7, 2005, the Company acquired all of the issued and outstanding capital stock of Atlantic Southeast and recorded an intangible asset for specifically identifiable contracts of approximately $33.7 million relating to the acquisition. The intangible asset is being amortized over fifteen years under the straight‑line method. As of December 31, 2015 and 2014, the Company had $23.3 million and $21.0 million in accumulated amortization expense, attributable to the acquisition, respectively. Factors indicating potential impairment include, but are not limited to, significant decreases in the market value of the long‑lived assets, a significant change in the condition of the long‑lived assets and operating cash flow losses associated with the use of the long‑lived assets. On a periodic basis, the Company evaluates whether impairment indicators are present. When considering whether or not impairment of long‑lived assets exists, the Company groups similar assets together at the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets and liabilities and compare the undiscounted cash flows for each asset group to the net carrying amount of the assets supporting the asset group. Asset groupings are done at the fleet or contract level. 

The Company did not recognize any impairment charges of long lived assets during 2015 or 2013.

In 2014, the Company had impairments on several long-lived assets relating to Embraer Brasilia EMB 120 (“EMB120”) turboprop aircraft, ERJ145 aircraft type specific assets and an aircraft paint facility located in Saltillo, Mexico. See Note 8, Special items, for the impairment charges recorded during the year ended December 31, 2014 related to the EMB120 long-lived assets, ERJ145 long-lived assets, Saltillo, Mexico paint facility and related assets.

Capitalized Interest

Interest is capitalized on aircraft purchase deposits as a portion of the cost of the asset and is depreciated over the estimated useful life of the asset. During the years ended December 31, 2015, 2014 and 2013, the Company capitalized interest costs of approximately $2.2 million, $1.8 million, and $1.2 million, respectively.

Maintenance

The Company operates under a FAA approved continuous inspection and maintenance program. The Company uses the direct expense method of accounting for its regional jet engine overhauls wherein the expense is recorded when the overhaul event occurs. The Company has engine services agreements with third-party vendors to provide long-term engine services covering the scheduled and unscheduled repairs for certain of its Bombardier CRJ700 Regional Jets (“CRJ700s”), Embraer  ERJ145 regional jet aircraft and Embraer E-175 jet (“E175”) aircraft. Under the terms of the agreements, the Company pays a fixed dollar amount per engine hour flown on a monthly basis and the third-party vendors will assume the responsibility to repair the engines at no additional cost to the Company, subject to certain specified exclusions. Maintenance costs under these contracts are recognized when the engine hour is flown pursuant to the terms of each contract.

The Company used the “deferral method” of accounting for its EMB120 turboprop aircraft engine overhauls, wherein the overhaul costs were capitalized and depreciated to the next estimated overhaul event, or remaining lease term for leased aircraft, whichever was shorter.  In 2015, the Company removed all of its EMB120 aircraft from service.

The costs of maintenance for airframe and avionics components, landing gear and normal recurring maintenance are expensed as incurred.

Passenger and Ground Handling Revenues

The Company recognizes passenger and ground handling revenues when the service is provided under its code-share agreements. Under the Company’s fixed fee arrangements (referred to as “fixed-fee arrangements, “contract flying” or “capacity purchase agreements”) with Delta, United, American and Alaska, the major airline generally pays the Company a fixed fee for each departure, flight or block time incurred, and an amount per aircraft in service each month with additional incentives based on completion of flights and on time performance.  The major airline partner also directly reimburses the Company for certain direct expenses incurred under the fixed-fee arrangement such as fuel expense and landing fee expenses.  Under the fixed-fee arrangements, revenue is earned when each flight is completed. 

Under a Revenue Sharing Arrangement (referred to as a “revenue-sharing” or “pro rate” arrangement), the major airline and regional airline negotiate a passenger fare proration formula, pursuant to which the regional airline receives a percentage of the ticket revenues for those passengers traveling for one portion of their trip on the regional airline and the other portion of their trip on the major airline.  Revenue is recognized under the Company’s pro rate flying agreements when each flight is completed based upon the portion of the pro rate passenger fare the Company anticipates that it will receive for each completed flight.

Other ancillary revenues commonly associated with airlines such as baggage fee revenue, ticket change fee revenue and the marketing component of the sale of mileage credits are retained by the Company’s major airline partners on flights that the Company operates under its code-share agreements.

In the event that the contractual rates under the agreements have not been finalized at quarterly or annual financial statement dates, the Company records revenues based on the lower of prior period’s approved rates, as adjusted to reflect any contract negotiations and the Company’s estimate of rates that will be implemented in accordance with revenue recognition guidelines.  In the event the Company has a reimbursement dispute with a major partner, the Company evaluates the dispute under its established revenue recognition criteria and, provided the revenue recognition criteria have been met, the Company recognizes revenue based on management’s estimate of the resolution of the dispute.

In several of the Company’s agreements, the Company is eligible for incentive compensation upon the achievement of certain performance criteria. The incentives are defined in the agreements and are being measured and determined on a monthly, quarterly or semi-annual basis. At the end of each period, the Company calculates the incentives achieved during that period and recognizes revenue accordingly.

The following summarizes the significant provisions of each code share agreement the Company has with each major partner:

Delta Connection Agreements

	Number of		Pass through costs
	aircraft under	Term / Termination	or costs paid directly
Agreement	agreements	Dates	by major partner
SkyWest Airlines	• CRJ 200 - 48	• The contract is scheduled to expire on an individual aircraft basis commencing in 2016	• Fuel
Delta Connection	• CRJ 700 - 19	• The final aircraft is scheduled to expire in 2022	• Engine Maintenance
Agreement (fixed-fee arrangement)	• CRJ 900 - 36	• The average remaining term of the aircraft under contract is 3.8 years	• Landing fees
		• Upon expiration, aircraft may be renewed or extended	• Station Rents, Deice
			• Insurance
ExpressJet Delta	• CRJ 200 - 42	• The contract is scheduled to expire on an individual aircraft basis commencing in 2016	• Fuel
Connection	• CRJ 700 - 41	• The final aircraft is scheduled to expire in 2022	• Engine Maintenance
Agreement (fixed-fee arrangement)	• CRJ 900 - 28	• The average remaining term of the aircraft under contract is 3.7 years	• Landing fees
		• Upon expiration, aircraft may be renewed or extended	• Station Rents, Deice
			• Insurance
SkyWest Airlines	• CRJ 200 - 21	• Terminable with 30 days' notice	• None
Pro-rate Agreement (revenue-sharing agreement)

United Express Agreements

			Pass through costs
	Number of		or costs paid
	aircraft under	Term / Termination	directly by major
Agreement	agreements	Dates	partner
SkyWest Airlines	• CRJ 200 - 57	• The contract is scheduled to expire on an individual aircraft basis commencing in 2016	• Fuel
United Express	• CRJ 700 - 70	• The final aircraft is scheduled to expire in 2027	• Landing fees
Agreements (fixed-fee	• E175 - 40	• The average remaining term of the aircraft under contract is 4.3 years	• Station Rents, Deice
arrangement)		• Upon expiration, aircraft may be renewed or extended	• Insurance
ExpressJet United ERJ	• ERJ 135 - 5	• The contract is scheduled to expire on an individual aircraft basis commencing in 2016	• Fuel
Agreement (fixed-fee arrangement)	• ERJ 145 - 166	• The final aircraft is scheduled to expire in 2017	• Engine Maintenance
		• The average remaining term of the aircraft under contract is 1.9 years	• Landing fees
		• Upon expiration, aircraft may be renewed or extended	• Station Rents, Deice
			• Insurance
SkyWest Airlines United	• CRJ 200 - 26	• Terminable with 120 days' notice	• None
Express Pro-rate Agreement (revenue-sharing arrangement)

Alaska Capacity Purchase Agreement

			Pass through costs
	Number of		or costs paid
	aircraft under	Term / Termination	directly by major
Agreement	agreements	Dates	partner
SkyWest Airlines	• CRJ 700 - 9	• The contract is scheduled to expire on an individual aircraft basis commencing in 2016	• Fuel
Alaska Agreement	• E175 - 5	• The final aircraft is scheduled to expire in 2028	• Landing fees
(fixed-fee arrangement)		• Upon expiration, aircraft may be renewed or extended	• Station Rents, Deice
			• Insurance

American Agreement

			Pass through costs
	Number of		or costs paid
	aircraft under	Term / Termination	directly by major
Agreement	agreements	Dates	partner
SkyWest Airlines	• CRJ 200 - 12	• Scheduled to expire in 2016	• Fuel
American Agreement		• Upon expiration, aircraft may be renewed or extended	• Landing fees
(fixed-fee agreement)			• Station Rents, Deice
			• Insurance
SkyWest Airlines	• CRJ 200 - 5	• Terminable with 120 days' notice	• None
American Pro-rate
Agreement (revenue-
sharing agreement)
ExpressJet American	• CRJ 200 - 11	• Scheduled to expire in 2017	• Fuel
Agreement (fixed-fee	• ERJ 145 - 16	• Upon expiration, aircraft may be renewed or extended	• Landing fees
agreement)			• Station Rents, Deice
			• Insurance
ExpressJet American Pro-rate	• CRJ 200 - 3	• Terminable with 120 days' notice	• None
Agreement (revenue-sharing agreement)

As of December 31, 2015, the Company anticipated placing an additional 25 E175 aircraft with United, ten additional E175 aircraft with Alaska and 19 E175 aircraft with Delta. The delivery dates for the new aircraft are expected to take place from January 2016 to June 2017.

Under the Company’s fixed-fee arrangements, the major airline partners compensate the Company for its costs of owning or leasing the aircraft on a monthly basis. The aircraft compensation structure varies by agreement, but is intended to cover either the Company’s aircraft principal and interest debt service costs, its aircraft depreciation and interest expense or its aircraft lease expense costs while the aircraft is under contract. Under the Company’s ExpressJet United ERJ Agreement and ExpressJet American ERJ145 Agreement, the major partner provides the aircraft to the Company for a nominal amount.

The Company’s passenger and ground handling revenues could be impacted by a number of factors, including changes to the Company’s code‑share agreements with Delta, United, Alaska or American, contract modifications resulting from contract re‑negotiations, the Company’s ability to earn incentive payments contemplated under the Company’s code‑share agreements and settlement of reimbursement disputes with the Company’s major partners.

Under the Company’s fixed-fee agreements with Delta, United, Alaska, and American, the compensation structure generally consists of a combination of agreed‑upon rates for operating flights and direct reimbursement for other certain costs associated with operating the aircraft. A portion of the Company’s contract flying compensation is designed to reimburse the Company for certain aircraft ownership costs. The Company has concluded that a component of its revenue under these agreements is rental income, inasmuch as the agreements identify the “right of use” of a specific type and number of aircraft over a stated period of time. The amounts deemed to be rental income under the agreements for the years ended December 31, 2015, 2014 and 2013 were $504.9 million, $497.0 million and $500.2 million, respectively. These amounts are reflected as passenger revenues on the Company’s consolidated statements of comprehensive income (loss). The Company has not separately stated aircraft rental income and aircraft rental expense in the consolidated statement of comprehensive income (loss) since the use of the aircraft is not a separate activity of the total service provided.

Deferred Aircraft Credits

The Company accounts for incentives provided by aircraft manufacturers as deferred credits. The deferred credits related to leased aircraft are amortized on a straight‑line basis as a reduction to rent expense over the lease term. Credits related to owned aircraft reduce the purchase price of the aircraft, which has the effect of amortizing the credits on a straight‑line basis as a reduction in depreciation expense over the life of the related aircraft. The incentives are credits that may be used to purchase spare parts and pay for training and other expenses.

Income Taxes

The Company recognizes a liability or asset for the deferred tax consequences of all temporary differences between the tax basis of assets and liabilities and their reported amounts in the consolidated financial statements that are expected to result in taxable or deductible amounts in future years when the reported amounts of the assets and liabilities are recovered or settled.

Net Income (Loss) Per Common Share

Basic net income (loss) per common share (“Basic EPS”) excludes dilution and is computed by dividing net income (loss) by the weighted average number of common shares outstanding during the period. Diluted net income (loss) per common share (“Diluted EPS”) reflects the potential dilution that could occur if stock options or other contracts to issue common stock were exercised or converted into common stock. The computation of Diluted EPS does not assume exercise or conversion of securities that would have an anti‑dilutive effect on net income (loss) per common share. During the years ended December 31, 2015, 2014 and 2013, 505,000,  3,191,000 and 3,072,000 shares reserved for issuance upon the exercise of outstanding options were excluded from the computation of Diluted EPS respectively, as their inclusion would be anti‑dilutive.

The calculation of the weighted average number of common shares outstanding for Basic EPS and Diluted EPS are as follows for the years ended December 31, 2015, 2014 and 2013 (in thousands):

	Year Ended December 31,
	2015		2014		2013
Numerator:
Net Income (Loss)	$	117,817	$	(24,154)	$	58,956
Denominator:
Denominator for basic earnings per-share weighted average shares		51,077		51,237		51,688
Dilution due to stock options and restricted stock		748		—		734
Denominator for diluted earnings per-share weighted average shares		51,825		51,237		52,422
Basic earnings (loss) per-share	$	2.31	$	(0.47)	$	1.14
Diluted earnings (loss) per-share	$	2.27	$	(0.47)	$	1.12

Comprehensive Income (Loss)

Comprehensive income (loss) includes charges and credits to stockholders’ equity that are not the result of transactions with the Company’s shareholders. Also, comprehensive income (loss) consisted of net income (loss) plus changes in unrealized appreciation (depreciation) on marketable securities and unrealized gain (loss) on foreign currency translation adjustment related to the Company’s equity investment in Trip Linhas Aereas, a regional airline operating in Brazil (“TRIP”) and Mekong Aviation Joint Stock Company, an airline operating in Vietnam (“Air Mekong”).

Fair Value of Financial Instruments

The carrying amounts reported in the consolidated balance sheets for receivables and accounts payable approximate fair values because of the immediate or short‑term maturity of these financial instruments. Marketable securities are reported at fair value based on market quoted prices in the consolidated balance sheets. If quoted prices in active markets are no longer available, the Company has estimated the fair values of these securities utilizing a discounted cash flow analysis as of December 31, 2015. These analyses consider, among other items, the collateralization underlying the security investments, the creditworthiness of the counterparty, the timing of expected future cash flows, and the expectation of the next time the security is expected to have a successful auction. The fair value of the Company’s long‑term debt is estimated based on current rates offered to the Company for similar debt and was approximately $1,939.8 million as of December 31, 2015, as compared to the carrying amount of $1,948.8 million as of December 31, 2015. The Company’s fair value of long‑term debt as of December 31, 2014 was $1,813.1 million as compared to the carrying amount of  $1,745.8 million as of December 31, 2014.

Segment Reporting

Generally accepted accounting principles require disclosures related to components of a company for which separate financial information is available to, and regularly evaluated by, the Company’s chief operating decision maker when deciding how to allocate resources and in assessing performance. The Company’s three operating segments consist of the operations conducted by SkyWest Airlines and ExpressJet, as well as other activities. Information pertaining to the Company’s reportable segments is presented in Note 2, Segment Reporting.  

Recent Accounting Pronouncements

In May 2014, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update No. 2014-09, “Revenue from Contracts with Customers”   (“ASU No. 2014-09”).  Under ASU No. 2014-09, revenue is recognized at the time a good or service is transferred to a customer for the amount of consideration received for that specific good or service. In July 2015, the FASB deferred the effective date of ASU No. 2014-09 to January 1, 2018.  The FASB also proposed permitting early adoption of the standard, but not before January 1, 2017.  Entities may use a full retrospective approach or report the cumulative effect as of the date of adoption. The Company’s management is currently evaluating the impact the adoption of ASU No. 2014-09 is anticipated to have on the Company’s consolidated financial statements.

In April 2015, the FASB issued Accounting Standards Update No. 2015-03, “Simplifying the Presentation of Debt Issuance Costs” (“ASU No. 2015-03”).  In August 2015, ASU No. 2015-03 was amended to modify existing guidance to require the presentation of debt issuance costs in the balance sheet as a deduction from the carrying amount of the related debt liability instead of as a deferred charge. It is effective for annual reporting periods beginning after December 15, 2015, but early adoption is permitted. The Company anticipates reclassifying the unamortized debt issuance costs and present debt net of those unamortized costs on its balance sheet upon adoption of ASU No. 2015-03. As of December 31, 2015, the Company had $20.9 million in unamortized debt issuance costs.

In November 2015, the FASB issued Accounting Standards Update 2015-17, Income Taxes (Topic 740): Balance Sheet Classification of Deferred Taxes (“ASU No. 2015-17”).  The standard requires that deferred tax liabilities and assets be classified as noncurrent in a classified statement of financial position.  The current requirement that deferred tax liabilities and assets of a tax-paying component of an entity be offset and presented as a single amount is not affected by ASU No. 2015-17.  ASU No. 2015-17 is effective for annual periods beginning after December 15, 2016, and interim periods within those annual periods.  The Company’s management is currently evaluating the impact the adoption of ASU No. 2015-17 is anticipated to have on the Company’s consolidated financial statements.

In February 2016, the FASB issued ASU 2016-02, Leases (“ASU 2016-02”). The standard amends the existing accounting standards for lease accounting, including requiring lessees to recognize most leases on their balance sheets and making targeted changes to lessor accounting. ASU 2016-02 will be effective beginning in the first quarter of 2019. Early adoption of ASU 2016-02 is permitted. The new leases standard requires a modified retrospective transition approach for all leases existing at, or entered into after, the date of initial application, with an option to use certain transition relief. The Company’s management is currently evaluating the impact of adopting ASU 2016-02 on the Company’s consolidated financial statements.

Immaterial error correction to consolidated balance sheet

In connection with the preparation of the Company’s consolidated financial statements for the year ended December 31, 2015, the Company determined that certain non-current prepaid aircraft rents previously reported were improperly presented as current on the Company’s consolidated balance sheet at December 31, 2014. As a result, current prepaid aircraft rents, as previously reported, were overstated by $201.5 million and non-current prepaid aircraft rents were understated by $201.5 million. The Company concluded that the error was not material to the consolidated balance sheet, but has elected to correct the error in the accompanying 2014 consolidated financial statements for consistency of presentation. The classification error had no effect on the consolidated statements of comprehensive income (loss), stockholders’ equity, or cash flows for the year ended December 31, 2014.

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Segment Reporting

12 Months Ended

Dec. 31, 2015

Segment Reporting

Segment Reporting

(2) Segment Reporting

Generally accepted accounting principles require disclosures related to components of a company for which separate financial information is available to, and regularly evaluated by, the Company’s chief operating decision maker when deciding how to allocate resources and in assessing performance.

The Company’s three operating segments consist of the operations of SkyWest Airlines, ExpressJet and SkyWest Leasing activities. Corporate overhead expense incurred by the Company is allocated to the operating expenses of SkyWest Airlines and ExpressJet.

During the fourth quarter of 2015, due to the increase in acquired E175 aircraft and the related aircraft debt financing, the Company’s chief operating decision maker started to analyze the flight operations of the Company’s E175 aircraft separately from the acquisition, ownership and financing costs and related revenue.  Because of this change, the “SkyWest Leasing” segment includes revenue attributed to the Company’s E175 ownership cost earned under the applicable fixed-fee flying contracts, and the depreciation and interest expense of the Company’s E175 aircraft.  The “SkyWest Leasing” segment’s total assets and capital expenditures include the acquired E175 aircraft.  The “SkyWest Leasing” segment additionally includes the activity of two CRJ200 aircraft leased to a third party.

As a result of the change in segmentation, prior periods have been recast to conform to the current presentation. The Company reclassified $15.0million of operating revenue, $8.5million of depreciation expense, $5.0million of interest expense, $1.6million of segment profit, $527.0million of total assets and $535.5million of capital expenditures (including non-cash) from the “SkyWest Airlines” segment to the “SkyWest Leasing” segment for the year ended December 31, 2014 to reflect the respective E175 activity in the “SkyWest Leasing” segment for 2014.

During the fourth quarter of 2015, the Company resolved a contract matter with one of its major partners that resulted in a $7.9 million reduction to revenue.  This reduction is reflected in the SkyWest Leasing segment as this amount related to an aircraft financing matter for the year ended December 31, 2015.

The following represents the Company’s segment data for the years ended December 31, 2015, 2014 and 2013 (in thousands).

		Year Ended December 31, 2015
		SkyWest
		Airlines		ExpressJet		SkyWest Leasing		Consolidated
Operating revenues	$	1,848,363	$	1,169,923	$	77,277	$	3,095,563
Operating expense		1,630,200		1,192,070		38,778		2,861,048
Depreciation and amortization expense		141,189		86,382		36,936		264,507
Interest expense		36,141		12,091		27,618		75,850
Segment profit (loss) (1)		182,022		(34,238)		10,881		158,665
Identifiable intangible assets, other than goodwill		—		10,499		—		10,499
Total assets		2,319,295		1,332,995		1,150,596		4,802,886
Capital expenditures (including non-cash)		30,897		24,679		659,513		715,089

		Year Ended December 31, 2014
		SkyWest
		Airlines		ExpressJet		SkyWest Leasing		Consolidated
Operating revenues	$	1,873,675	$	1,346,859	$	16,913	$	3,237,447
Operating expense		1,758,145		1,446,050		8,404		3,212,599
Depreciation and amortization expense		162,699		88,459		8,484		259,642
Interest expense		39,452		18,754		7,789		65,995
Segment profit (loss) (1)		76,078		(117,945)		720		(41,147)
Identifiable intangible assets, other than goodwill		—		12,748		—		12,748
Total assets		2,492,828		1,390,129		526,971		4,409,928
Capital expenditures (including non-cash)		137,678		23,790		535,455		696,923

		Year Ended December 31, 2013
		SkyWest
		Airlines		ExpressJet		SkyWest Leasing		Consolidated
Operating revenues	$	1,827,568	$	1,466,341	$	3,816	$	3,297,725
Operating expense		1,644,129		1,494,302		6,183		3,144,614
Depreciation and amortization expense		155,667		89,338		—		245,005
Interest expense		43,920		21,034		3,704		68,658
Segment profit (loss) (1)		139,519		(48,995)		(6,071)		84,453
Identifiable intangible assets, other than goodwill		—		14,998		—		14,998
Total assets		2,532,431		1,700,788		—		4,233,219
Capital expenditures (including non-cash)		103,387		38,657		—		142,044

(1) Segment profit is operating income less interest expense

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Long-term Debt

12 Months Ended

Dec. 31, 2015

Long-term Debt

Long-term Debt

(3) Long‑term Debt

Long‑term debt consisted of the following as of December 31, 2015 and 2014 (in thousands):

	December 31,		December 31,
	2015		2014
Notes payable to banks, due in semi-annual installments, variable interest based on LIBOR, or with interest rates ranging from 1.29% to 2.22% through 2016 to 2020, secured by aircraft	$	108,348	$	174,159
Notes payable to a financing company, due in semi-annual installments, variable interest based on LIBOR, or with interest rates ranging from 1.76% to 3.25% through 2017 to 2021, secured by aircraft		217,341		350,177
Notes payable to banks, due in semi-annual installments plus interest at 6.06% to 6.51% through 2021, secured by aircraft		108,069		129,201
Notes payable to a financing company, due in semi-annual installments plus interest at 5.78% to 6.23% through 2017, secured by aircraft		17,208		25,090
Notes payable to banks, due in monthly installments plus interest of 2.68% to 6.86% through 2025, secured by aircraft		479,170		572,446
Notes payable to banks, due in monthly installments, plus interest at 6.05% through 2020, secured by aircraft		11,304		13,551
Notes payable to banks, due in monthly installments, plus interest at 3.10% through 2019, secured by aircraft		4,615		5,909
Notes payable to banks, due in quarterly installments plus interest at 3.39% to 4.02% through 2027, secured by aircraft		966,156		446,724
Notes payable to banks, due in monthly installments, plus interest based on LIBOR at 3.21% to 3.33% through 2017, secured by aircraft		14,538		28,554
Notes payable to banks due in monthly installments, interest at 3.30% through 2019, secured by spare engines		22,054		—
Long-term debt	$	1,948,803	$	1,745,811
Less current maturities		(272,027)		(211,821)
Long-term debt, net of current maturities	$	1,676,776	$	1,533,990

During the year ended December 31, 2015, the Company acquired 25 new E175 aircraft. Approximately 85% of the aircraft purchase price was financed through the issuance of debt and 15% of the aircraft purchase price was paid with cash.

As of December 31, 2015, the Company had $1.9 billion of long‑term debt obligations primarily related to the acquisition of CRJ200, CRJ700, CRJ900 and E175 aircraft. The average effective interest rate on the debt related to those long-term debt obligations was approximately 3.7% at December 31, 2015.

During the year ended December 31, 2015, the Company used $110.8 million in cash to pay off $145.4 million in debt. The payment resulted in a pre-tax gain of $33.7 million, net of the write off of deferred loan costs associated with the debt, reflected as other income in the consolidated statements of comprehensive income (loss), of which the Company used $94 million in cash to pay off $128 million in debt, resulting in a pre-tax gain of $33 million during the fourth quarter of 2015.

The aggregate amounts of principal maturities of long‑term debt as of December 31, 2015 were as follows (in thousands):

2016	$	272,027
2017		248,629
2018		230,681
2019		223,898
2020		183,620
Thereafter		789,948
	$	1,948,803

As of December 31, 2015 and 2014, SkyWest Airlines had a $25 million line of credit. As of December 31, 2015 and 2014, SkyWest Airlines had no amount outstanding under the facility. However, at December 31, 2015 and 2014 the Company had $6 million and $5 million, respectively, in letters of credit issued under the facility which reduced the amount available under the facility to $19 million and $20 million, respectively. The facility expires on April 19, 2016 and has a variable interest rate of Libor plus 3.0%.

As of December 31, 2015 and 2014, the Company had $88.9 million and $79.9 million, respectively, in letters of credit and surety bonds outstanding with various banks and surety institutions.

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Income Taxes

12 Months Ended

Dec. 31, 2015

Income Taxes

Income Taxes

(4) Income Taxes

The provision for income taxes includes the following components (in thousands):

	Year ended December 31,
	2015		2014		2013
Current tax provision (benefit):
Federal	$	3,801	$	(176)	$	1,767
State		1,035		838		343
Foreign		—		2,081		—
		4,836		2,743		2,110
Deferred tax provision (benefit):
Federal		66,430		4,697		34,728
State		5,239		371		2,738
		71,669		5,068		37,466
Provision for income taxes	$	76,505	$	7,811	$	39,576

The following is a reconciliation between the statutory federal income tax rate of 35% and the effective rate which is derived by dividing the provision for income taxes by income (loss) before for income taxes (in thousands):

	Year ended December 31,
	2015		2014		2013
Computed provision (benefit) for income taxes at the statutory rate	$	68,013	$	(5,720)	$	34,486
Increase (decrease) in income taxes resulting from:
State income tax provision (benefit), net of federal income tax benefit		5,416		(107)		2,867
Non-deductible expenses		3,641		3,865		3,257
Valuation allowance changes affecting the provision for income taxes		(899)		5,981		1,430
Foreign income taxes, net of federal & state benefit		—		1,973
Other, net		334		1,819		(2,464)
Provision for income taxes	$	76,505	$	7,811	$	39,576

For the year ended December 31, 2015, the Company released a $0.9  million valuation allowance against certain deferred tax assets primarily associated with ExpressJet state net operating losses with a limited carry forward period.  The release of the valuation allowance was based on the Company's gain resulting from the early retirement of certain long term debt which reduced the amount of deferred tax assets that were anticipated to expire before the deferred tax assets may be utilized. 

For the year ended December 31, 2014, the Company recorded a$6.0million valuation allowance against certain deferred tax assets primarily associated with ExpressJet state net operating losses with a limited carry forward period.  The valuation allowance was based on the Company’s assessment of deferred tax assets that are anticipated to expire before the deferred tax assets may be utilized.  The Company additionally recorded a  $2.0  million foreign tax expense associated with Brazilian withholding tax on the sale of the Company's equity ownership in TRIP.

For the year ended December 31, 2013, the Company recorded a $1.4 million valuation allowance against certain deferred tax assets primarily associated with ExpressJet state net operating losses with a limited carry forward period.  The valuation allowance was based on the Company’s assessment at December 31, 2013 of deferred tax assets that were anticipated to expire before the deferred tax assets may be utilized.

The significant components of the Company’s net deferred tax assets and liabilities as of December 31, 2015 and 2014 are as follows (in thousands):

	As of December 31,
	2015		2014
Deferred tax assets:
Intangible Asset	$	30,369	$	34,819
Accrued benefits		47,514		43,853
Net operating loss carryforward		82,211		152,361
AMT credit carryforward		21,391		17,590
Deferred aircraft credits		55,544		53,797
Accrued reserves and other		24,575		27,008
Total deferred tax assets		261,604		329,428
Valuation allowance		(8,126)		(9,025)
Deferred tax liabilities:
Accelerated depreciation		(902,322)		(895,405)
Total deferred tax liabilities		(902,322)		(895,405)
Net deferred tax liability	$	(648,844)	$	(575,002)

The Company’s deferred tax liabilities were primarily generated through accelerated depreciation, combined with shorter depreciable tax lives, allowed under the IRS tax code for purchased aircraft and support equipment compared to the Company’s US GAAP depreciation policy for such assets using the straight-line method (see note 1 Nature of Operations and Summary of Significant Accounting Policies).

The Company's valuation allowance is related to certain deferred tax assets with a limited carry forward period.  The Company does not anticipate utilizing these deferred tax assets prior to the lapse of the carry forward period.

At December 31, 2015 and 2014, the Company had federal net operating losses, net of valuation allowance, of approximately $189.0 million and $379.3 million and state net operating losses of approximately $352.2 million and $452.2 million, respectively.  The estimated effective tax rate applicable to the state and federal net operating losses net of valuation allowances as of December 31, 2015 was 35.0% and 2.6%, respectively.  The Company anticipates that the federal and state net operating losses will start to expire in 2026 and 2017, respectively.  The Company has recorded a valuation allowance for state net operating losses the Company anticipates will expire before the benefit will be realized due to the limited carry forward periods.  As of December 31, 2015 and 2014, the Company also had an alternative minimum tax credit of approximately $21.4 million and $17.6 million, respectively, which does not expire.

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Commitments and Contingencies

12 Months Ended

Dec. 31, 2015

Commitments and Contingencies

Commitments and Contingencies

(5) Commitments and Contingencies

Lease Obligations

The Company leases 470 aircraft, as well as airport facilities, office space, and various other property and equipment under non‑cancelable operating leases which are generally on a long‑term net rent basis where the Company pays taxes, maintenance, insurance and certain other operating expenses applicable to the leased property. The following table summarizes future minimum rental payments required under operating leases that have non‑cancelable lease terms as of December 31, 2015 (in thousands):

Year ended December 31,
2016	$	269,520
2017		192,122
2018		154,077
2019		121,107
2020		133,659
Thereafter		349,038
	$	1,219,523

The majority of the Company’s leased aircraft are owned and leased through trusts whose sole purpose is to purchase, finance and lease these aircraft to the Company; therefore, they meet the criteria of a variable interest entity. However, since these are single owner trusts in which the Company does not participate, the Company is not considered at risk for losses and is not considered the primary beneficiary. As a result, based on the current rules, the Company is not required to consolidate any of these trusts or any other entities in applying the accounting guidance. The Company’s management believes that the Company’s maximum exposure under these leases is the remaining lease payments.

The Company’s leveraged lease agreements typically obligate the Company to indemnify the equity/owner participant against liabilities that may arise due to changes in benefits from tax ownership of the respective leased aircraft. The terms of these contracts range up to 11 years. The Company did not accrue any liability relating to the indemnification to the equity/owner participant because of management’s assessment that the probability of this occurring is remote.

During the year ended December 31, 2015, the Company built a maintenance facility in Boise, Idaho and entered into a sale lease-back agreement with the city of Boise.  The sales price of the facility was $18.5 million and the operating lease expires in 2040.  The future lease obligations for the Boise maintenance facility are included in the above future minimum rental payments schedule.

Total rental expense for non-cancelable aircraft operating leases was approximately $273.7 million, $305.3 million and $325.4 million for the years ended December 31, 2015, 2014 and 2013, respectively. The minimum rental expense for airport station rents was approximately $35.1 million, $29.0 million and $35.1 million for the years ended December 31, 2015, 2014 and 2013, respectively.

Self‑insurance

The Company self‑insures a portion of its potential losses from claims related to workers’ compensation, environmental issues, property damage, medical insurance for employees and general liability. Losses are accrued based on an estimate of the ultimate aggregate liability for claims incurred, using standard industry practices and the Company’s actual experience. Actual results could differ from these estimates.

Legal Matters

The Company is subject to certain legal actions which it considers routine to its business activities. As of December 31, 2015, management believed, after consultation with legal counsel, that the ultimate outcome of such legal matters was not likely to have a material adverse effect on the Company’s financial position, liquidity or results of operations.

Concentration Risk and Significant Customers

The Company requires no collateral from its major partners or customers but monitors the financial condition of its major partners. Under the majority of the Company’s code-share agreements, the Company receives weekly payments from its major code share partners that approximates a significant percentage of the compensation earned for such period.  Additionally, the Company provides certain customer service functions at multiple airports for various airlines and the Company maintains an allowance for doubtful accounts receivable based upon expected collectability of all accounts receivable. The Company’s allowance for doubtful accounts totaled $187,300 and $326,600 as of December 31, 2015 and 2014, respectively. For the years ended December 31, 2015, 2014 and 2013, the Company’s contractual relationships with Delta and United combined accounted for approximately 86.9%,  88.7% and 91.6%, respectively of the Company’s total revenues.

Employees Under Collective Bargaining Agreements

As of December 31, 2015, the Company had approximately 18,300 full‑time equivalent employees. Approximately 38.0% of these employees were represented by unions, including the following employee groups. Notwithstanding the completion of the ExpressJet Combination, ExpressJet’s employee groups continue to be represented by those unions who provided representation prior to the ExpressJet Combination.

Accordingly, the following table refers to ExpressJet’s employee groups based upon their union affiliations prior to the ExpressJet Combination.

	Approximate
	Number of
	Active Employees		Status of
Employee Group	Represented	Representatives	Agreement
Atlantic Southeast Pilots	1,491	Air Line Pilots Association International	Amendable February 2018
Atlantic Southeast Flight Attendants	1,031	International Association of Machinists and Aerospace Workers	Amendable
Atlantic Southeast Flight Controllers	36	Transport Workers Union of America	Amendable
Atlantic Southeast Mechanics	364	International Brotherhood of Teamsters	Amendable
Atlantic Southeast Stock Clerks	73	International Brotherhood of Teamsters	Amendable
ExpressJet Delaware Pilots	2,107	Air Line Pilots Association International	Amendable February 2018
ExpressJet Delaware Flight Attendants	993	International Association of Machinists and Aerospace Workers	Amendable
ExpressJet Delaware Mechanics	711	International Brotherhood of Teamsters	Amendable
ExpressJet Delaware Dispatchers	53	Transport Workers Union of America	Amendable
ExpressJet Delaware Stock Clerks	96	International Brotherhood of Teamsters	Amendable

In February 2016, the Atlantic Southeast Pilots and the ExpressJet Delaware Pilots ratified a two-year contract extension to their respective labor agreements.

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Fair Value Measurements

12 Months Ended

Dec. 31, 2015

Fair Value Measurements

Fair Value Measurements

(6) Fair Value Measurements

The Company holds certain assets that are required to be measured at fair value in accordance with United States GAAP. The Company determined fair value of these assets based on the following three levels of inputs:

Level 1—Quoted prices in active markets for identical assets or liabilities.

Level 2—Observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Some of the Company’s marketable securities primarily utilize broker quotes in a non‑active market for valuation of these securities.

Level 3—Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities, therefore requiring an entity to develop its own assumptions.

As of December 31, 2015, the Company held certain assets that are required to be measured at fair value on a recurring basis. Assets measured at fair value on a recurring basis are summarized below (in thousands):

	Fair Value Measurements as of December 31, 2015
	Total			Level 1		Level 2		Level 3
Marketable Securities
Bonds	$	286,637		$	—	$	286,637	$	—
Commercial paper		31			—		31		—
Asset backed securities	$	286,668		$	—	$	286,668	$	—
Cash, Cash Equivalents and Restricted Cash		211,251			211,251		—		—
Other Assets(a)		2,321	(a)		—		—		2,321
Total Assets Measured at Fair Value	$	500,240		$	211,251	$	286,668	$	2,321

	Fair Value Measurements as of December 31, 2014
	Total		Level 1		Level 2		Level 3
Marketable Securities
Bonds	$	410,163	$	—	$	410,163	$	—
Commercial paper		5,110		—		5,110		—
Asset backed securities		415,273		—		415,273		—
Cash, Cash Equivalents and Restricted Cash		143,857		143,857		—		—
Other Assets(a)		2,309		—		—		2,309
Total Assets Measured at Fair Value	$	561,439	$	143,857	$	415,273	$	2,309

(a) Auction rate securities included in long-term “Other assets” in the Consolidated Balance Sheet

Based on market conditions, the Company uses a discounted cash flow valuation methodology for auction rate securities. Accordingly, for purposes of the foregoing consolidated financial statements, these securities were categorized as Level 3 securities. The Company’s “Marketable Securities” classified as Level 2 primarily utilize broker quotes in a non‑active market for valuation of these securities.

No significant transfers between Level 1, Level 2 and Level 3 occurred during the year ended December 31, 2015. The Company’s policy regarding the recording of transfers between levels is to record any such transfers at the end of the reporting period.

The following table presents the Company’s assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) at December 31, 2015 (in thousands):

Fair Value Measurements Using Significant Unobservable Inputs

(Level 3)

	Auction Rate
	Securities
Balance at January 1, 2015	$	2,309
Total realized and unrealized gains or (losses)
Included in earnings		—
Included in other comprehensive income		12
Transferred out		—
Settlements		—
Balance at December 31, 2015	$	2,321

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Investment in Other Companies

12 Months Ended

Dec. 31, 2015

Investment in Other Companies

Investment in Other Companies

(7) Investment in Other Companies

In 2014, the Company completed the sale of its 20% interest in TRIP to Trip investments Ltda (“Trip Investimentos”) for $42 million. The Company recorded a gain from the sale of its TRIP shares of $24.9 million during the year ended December 31, 2014, which is reflected in Other Income in the Consolidated Statements of Comprehensive Income (Loss).

In 2013, the Company sold its 30% ownership interest in Mekong Aviation Joint Stock Company, an airline operating in Vietnam (“Air Mekong”). The Company recognized a gain from the sale of its Air Mekong shares of $5million during the year ended December 31, 2013, which is reflected in other income in the Consolidated Statements of Comprehensive Income (Loss). Additionally, in 2013, the Company terminated its sub‑lease of certain aircraft to Air Mekong and recognized $5.1 million of other income during the year ended December 31, 2013 primarily due to the recognition of collected and realized contingent rent payments, net of the write‑off of certain maintenance deposits.

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Special Items

12 Months Ended

Dec. 31, 2015

Special Items

Special Items

(8) Special Items

The following table summarizes the components of the Company's special items, for the year ended December 31, 2015, 2014 and 2013 (in thousands):

	Year ended December 31,
	2015		2014		2013
Special items:
EMB120 aircraft related items 1	$	—	$	57,046	$	—
ERJ145 aircraft related items 2		—		12,931		—
Paint facility and related items 3		—		4,800		—
Total special items	$	—	$	74,777	$	—

(1) Consists primarily of impairment charges to write-down owned EMB120 aircraft including capitalized engine overhaul costs, and related long-lived assets to their estimated fair value write down of $48.3 million and accrued obligations on leased aircraft and related costs of $8.8 million. The estimated fair value of the long-lived assets was based on third party valuations for similar assets which is considered an unobservable input (Level 3) under the fair value hierarchy.  In November 2014, the Company approved a plan to discontinue operating the EMB120 aircraft by the end of the second quarter of 2015.  The decision to discontinue use of the EMB120 aircraft included management’s assessment of the need for pilots to operate upcoming deliveries for the E175 aircraft, the incremental training cost to hire new pilots compared to retraining existing EMB120 pilots to operate CRJ or E175 aircraft, and the uncertainty related to the number of qualified pilots available for hire, combined with the overall age and increased operating costs of the Company’s EMB120 fleet.  These special items are reflected in the SkyWest Airlines operating expenses under Note 2 Segment Reporting.

(2) Consists primarily of impairment charges to write-down certain ERJ145 long-lived assets, which primarily consisted of spare engines and ERJ145 spare aircraft parts, to their estimated fair value of $11.4 million  and accrued obligations on leased aircraft and related costs of $1.5 million.  The estimated fair value of the long-lived assets was based on third party valuations for similar assets which is considered an unobservable input (Level 3) under the fair value hierarchy.   In November 2014, the Company entered into an amended and restated contract with United that accelerated the lease terminations of certain ERJ145 aircraft and accelerated the termination date of the Company’s flying contract to operate the ERJ145s with United from the year 2020 to 2017.  The reduced term shortened the anticipated useful life of the ERJ145 long-lived assets which triggered the impairment evaluation.   These special items are reflected in the ExpressJet operating expenses under Note 2 Segment Reporting.

(3) Consists primarily of the write-down of assets associated with the disposition of the Company’s paint facility located in Saltillo, Mexico, which was sold during the year ended December 31, 2014.  These special items are reflected in the ExpressJet operating expenses under Note 2 Segment Reporting.

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Capital Transactions

12 Months Ended

Dec. 31, 2015

Capital Transactions

Capital Transactions

(9) Capital Transactions

Preferred Stock

The Company is authorized to issue 5,000,000 shares of preferred stock in one or more series without shareholder approval. No shares of preferred stock are presently outstanding. The Company’s Board of Directors is authorized, without any further action by the shareholders of the Company, to (i) divide the preferred stock into series; (ii) designate each such series; (iii) fix and determine dividend rights; (iv) determine the price, terms and conditions on which shares of preferred stock may be redeemed; (v) determine the amount payable to holders of preferred stock in the event of voluntary or involuntary liquidation; (vi) determine any sinking fund provisions; and (vii) establish any conversion privileges.

Stock Compensation

On May 4, 2010, the Company’s shareholders approved the adoption of the SkyWest Inc. 2010 Long‑Term Incentive Plan, which provides for the issuance of up to 5,150,000 shares of common stock to the Company’s directors, employees, consultants and advisors (the “2010 Incentive Plan”). The 2010 Incentive Plan provides for awards in the form of options to acquire shares of common stock, stock appreciation rights, restricted stock grants, restricted stock units and performance awards. The 2010 Incentive Plan is administered by the Compensation Committee of the Company’s Board of Directors (the “Compensation Committee”), which is authorized to designate option grants as either incentive stock options for income tax purposes (“ISO”) or non-statutory stock options ISOs are granted at not less than 100% of the market value of the underlying common stock on the date of grant. Non‑statutory stock options are granted at a price as determined by the Compensation Committee.

In prior years, the Company adopted three stock option plans: the Executive Stock Incentive Plan (the “Executive Plan”), the 2001 Allshare Stock Option Plan (the “Allshare Plan”) and SkyWest Inc. Long‑Term Incentive Plan (the “2006 Incentive Plan”). As of December 31, 2015, options to purchase an aggregate 76,923 shares of the Company’s common stock remained outstanding under the Executive Plan, the Allshare Plan and the 2006 Incentive Plan. There are no additional shares of common stock available for issuance under these plans.

The fair value of stock options awarded under the Company’s stock option plans has been estimated as of the grant date using the Black‑Scholes option pricing model. The Company uses historical data to estimate option exercises and employee termination in the option pricing model. The expected term of options granted is derived from the output of the option pricing model and represents the period of time that options granted are expected to be outstanding. The expected volatilities are based on the historical volatility of the Company’s traded stock and other factors. The Company granted 267,433,  255,503 and 173,560 stock options to employees under the 2010 Incentive Plan during the years ended December 31, 2015, 2014 and 2013, respectively. Stock options granted in 2015 vest in three equal installments over a three-year period. Stock options granted in 2014 and 2013 have three-year vesting periods.  The following table shows the assumptions used and weighted average fair value for grants in the years ended December 31, 2015, 2014 and 2013.

	2015			2014			2013
Expected annual dividend rate		1.18	%		1.32	%		1.21	%
Risk-free interest rate		1.62	%		1.50	%		0.92	%
Average expected life (years)		5.7			5.8			6.0
Expected volatility of common stock		0.401			0.431			0.446
Forfeiture rate		0.0	%		0.0	%		0.0	%
Weighted average fair value of option grants	$	4.75		$	4.47		$	5.04

The Company recorded share‑based compensation expense only for those options that are expected to vest. The estimated fair value of the stock options is amortized over the vesting period of the respective stock option grants.

During the year ended December 31, 2015, the Company granted 408,163shares of restricted stock units to certain Company’s employees under the 2010 Incentive Plan. The restricted stock units granted during the year ended December 31, 2015 have a three‑year vesting period, during which the recipient must remain employed with the Company or its subsidiaries. The weighted average fair value of the restricted stock units the date of grants made during the year ended December 31, 2015 was $13.57 per share.

The following table summarizes the activity of restricted stock units granted to certain Company employees as of December 31, 2015, 2014 and 2013:

			Weighted-Average
			Grant-Date Fair
	Number of Shares		Value
Non-vested shares outstanding at December 31, 2012	698,885	$	14.21
Granted	282,651		13.43
Vested	(202,012)		14.51
Cancelled	(45,933)		13.69
Non-vested shares outstanding at December 31, 2013	733,591		13.79
Granted	312,749		12.00
Vested	(284,891)		14.74
Cancelled	(38,273)		12.83
Non-vested shares outstanding at December 31, 2014	723,176		12.70
Granted	408,163		13.57
Vested	(215,856)		13.06
Cancelled	(106,184)		13.52
Non-vested shares outstanding at December 31, 2015	809,299		13.13

During the year ended December 31, 2015, the Compensation Committee granted performance share units, which are performance based restricted stock units, to certain Company employees with three-year performance based financial metrics that the Company must meet before those awards may be earned and the performance period for those grants ends December 31, 2017. The Compensation Committee will determine the achievement of performance results and corresponding vesting of performance shares for each performance period. At the end of each performance period, the number of shares awarded can range from 0% to 150% of the original granted amount, depending on the performance against the pre-established targets.

The following table summarizes the activity of performance share units granted at target as of December 31, 2015.

			Weighted-Average
			Grant-Date Fair
	Number of Shares		Value
Non-vested shares outstanding at December 31, 2014	—	$	—
Granted	222,583		13.61
Vested	—		—
Cancelled	(19,754)		13.51
Non-vested shares outstanding at December 31, 2015	202,829	$	13.62

During the years ended December 31, 2015, 2014 and 2013 the Company granted fully‑vested shares of common stock to the Company’s directors in the amounts of 36,950,  44,631 and 29,453 shares,  respectively, with a weighted average grant‑date fair value of $14.05,  $12.10, and$13.24,  respectively.

During the year ended December 31, 2015, 2014 and 2013, the Company recorded equity‑based compensation expense of $5.4 million, $5.3 million and $4.4 million, respectively.

As of December 31, 2015, the Company had $8.7 million of total unrecognized compensation cost related to non‑vested stock options and non‑vested restricted stock grants. Total unrecognized compensation cost will be adjusted for future changes in estimated forfeitures. The Company expects to recognize this cost over a weighted average period of 2.0 years.

Options are exercisable for a period as defined by the Compensation Committee on the date granted; however, no stock option will be exercisable before six months have elapsed from the date it is granted and no stock option shall be exercisable after seven years from the date of grant. The following table summarizes the stock option activity for all of the Company’s plans for the years ended December 31, 2015, 2014 and 2013:

	2015							2014			2013
				Weighted
		Weighted		Average			Aggregate		Weighted			Weighted
		Average		Remaining			Intrinsic		Average			Average
	Number of	Exercise		Contractual			Value	Number of	Exercise		Number of	Exercise
	Options	Price		Term			($000)	Options	Price		Options	Price
Outstanding at beginning of year	2,888,074	$	16.46	1.7	years	$	—	3,407,575	$	17.99	3,653,859	$	18.44
Granted	267,433		13.63					255,503		11.96	173,560		13.24
Exercised	(544,917)		14.68					(6,701)		12.10	(75,080)		10.91
Cancelled	(1,546,161)		18.53					(768,303)		6.81	(344,764)		20.67
Outstanding at end of year	1,064,429		13.64	3.7	years	$	5,726.7	2,888,074		16.46	3,407,575		17.99
Exercisable at December 31, 2015	484,747		14.46	1.7	years	$	2,212.5
Exercisable at December 31, 2014	2,324,336		17.39	0.8	years		—

The total intrinsic value of options to acquire shares of the Company’s common stock that were exercised during the years ended December 31, 2015, 2014 and 2013 was $1,800,000,  $30,000 and $172,000, respectively.

The following table summarizes the status of the Company’s non‑vested stock options as of December 31, 2015:

		Weighted-Average
	Number of	Grant-Date
	Shares	Fair Value
Non-vested shares at beginning of year	563,738	$	4.56
Granted	267,433		4.92
Vested	(187,403)		4.43
Cancelled	(64,086)		4.65
Non-vested shares at end of year	579,682	$	4.75

The following table summarizes information about the Company’s stock options outstanding at December 31, 2015:

			Options Outstanding					Options Exercisable
				Weighted Average
			Number	Remaining		Weighted Average		Number	Weighted Average
Range of Exercise Prices			Outstanding	Contractual Life		Exercise Price		Exercisable	Exercise Price
$8	to	$11	19,458	5.4	years	$	11.10	—	$	—
$12	to	$14	859,595	4.1	years		13.31	305,331		13.90
$15	to	$18	185,376	1.4	years		15.43	179,416		15.64
$8	to	$18	1,064,429	3.7	years	$	13.64	484,747	$	14.46

Taxes

The Company’s treatment of stock option grants of non‑ qualified options, restricted stock units and performance shares results in the creation of a deferred tax asset, which is a temporary difference, until the time that the option is exercised or the restrictions lapse.

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Retirement Plans and Employee Stock Purchase Plans

12 Months Ended

Dec. 31, 2015

Retirement Plans and Employee Stock Purchase Plans

Retirement Plans and Employee Stock Purchase Plans

(10) Retirement Plans and Employee Stock Purchase Plans

SkyWest Retirement Plan

The Company sponsors the SkyWest, Inc. Employees’ Retirement Plan (the “SkyWest Plan”). Employees who have completed 90 days of service and are at least 18 years of age are eligible for participation in the SkyWest Plan. Employees may elect to make contributions to the SkyWest Plan. Generally, the Company matches 100% of such contributions up to 2%,  4% or 6% of the individual participant’s compensation, based upon length of service for non-pilot employees and up to 3%,  5% or 7% of the individual participant’s compensation, based upon length of service for pilot employees.  Additionally, a discretionary contribution may be made by the Company. The Company’s combined contributions to the SkyWest Plan were $20.4 million, $19.3 million and $18.3 million for the years ended December 31, 2015, 2014 and 2013, respectively.

ExpressJet and Atlantic Southeast Retirement Plans

ExpressJet (formerly Atlantic Southeast) sponsors the Atlantic Southeast Airlines, Inc. Investment Savings Plan (the “Atlantic Southeast Plan”). Employees who have completed 90 days of service and are 18 years of age are eligible for participation in the Atlantic Southeast Plan. Employees may elect to make contributions to the Atlantic Southeast Plan; however, ExpressJet limits the amount of company match at 6% of each participant’s total compensation, except for those with ten or more years of service whose company match is limited to 8% of total compensation. Additionally, ExpressJet matches the individual participant’s contributions from 20% to 75%, depending on the length of the participant’s service. Additionally, participants are 100% vested in their elective deferrals and rollover amounts and from 10% to 100% vested in company matching contributions based on length of service.

Effective December 31, 2002, ExpressJet Delaware adopted the ExpressJet Airlines, Inc. 401(k) Savings Plan (the “ExpressJet Retirement Plan”). Substantially all of ExpressJet Delaware’s domestic employees were covered by this plan at the time of the ExpressJet Combination. Effective January 1, 2009, the ExpressJet Retirement Plan was amended such that certain matching payment amounts have been reduced or eliminated depending on the terms of the collective bargaining unit or work group, as applicable.

ExpressJet’s contribution to the Atlantic Southeast and the ExpressJet Retirement Plans was $24.0 million, $27.2 million and $26.7 million for the years ended December 31, 2015, 2014 and 2013, respectively.

Employee Stock Purchase Plans

In May 2009, the Company’s Board of Directors approved the SkyWest, Inc. 2009 Employee Stock Purchase Plan (the “2009 Stock Purchase Plan”). All employees who have completed 90 days of employment with the Company or one of its subsidiaries are eligible to participate in the 2009 Stock Purchase Plan, except employees who own five percent or more of the Company’s common stock. The 2009 Stock Purchase Plan enables employees to purchase shares of the Company’s common stock at a five percent discount, through payroll deductions. Employees can contribute up to 15% of their base pay, not to exceed $25,000 each calendar year, for the purchase of shares. Shares are purchased semi-annually at a five percent discount based on the end of the period price. Employees can terminate their participation in the 2009 Stock Purchase Plan at any time upon written notice.

The following table summarizes purchases made under the 2009 Employee Stock Purchase Plans during the years ended December 31, 2015, 2014 and 2013:

	Year ended December 31,
	2015		2014		2013
Number of shares purchased		254,098		295,035		299,786
Average price of shares purchased	$	13.50	$	12.72	$	12.33

The 2009 Stock Purchase Plan is a non‑compensatory plan under the accounting guidance. Therefore, no compensation expense was recorded for the years ended December 31, 2015, 2014 and 2013.

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Stock Repurchase

12 Months Ended

Dec. 31, 2015

Stock Repurchase

Stock Repurchase

(11) Stock Repurchase

The Company’s Board of Directors has previously authorized the repurchase of the Company’s common stock in the public market. During the years ended December 31, 2015, 2014 and 2013, the Company repurchased 1.3 million, 0.7 million, 0.8 million shares of common stock for approximately $18.7 million, $8.4 million and $11.7 million, respectively at a weighted average price per share of $14.98,  $12.54 and $14.40, respectively. As of December 31, 2015, the Company’s Board of Directors has not authorized additional repurchases of the Company’s common stock.

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Related-Party Transactions

12 Months Ended

Dec. 31, 2015

Related-Party Transactions

Related-Party Transactions

(12) Related‑Party Transactions

The Company’s Chairman of the Board and former Chief Executive Officer, serves on the Board of Directors of Zions Bancorporation (“Zions”). The Company maintains a line of credit (see Note 3) and certain bank accounts with Zions. Zions is an equity participant in leveraged leases on one CRJ200, two CRJ700 and four EMB120 aircraft leased by the Company’s subsidiaries. Zions also refinanced five CRJ200 and two CRJ700 aircraft in 2012 for terms of three to four years, becoming the debtor on these aircraft. Zions also serves as the Company’s transfer agent. The Company’s cash balance in the accounts held at Zions as of December 31, 2015 and 2014 was $65.0 million and $90.6 million, respectively.

During the year ended December 31, 2015, the Company purchased $363,910 of spare aircraft parts from an entity affiliated with a director of the Company.

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Quarterly Financial Data (Unaudited)

12 Months Ended

Dec. 31, 2015

Quarterly Financial Data (Unaudited)

Quarterly Financial Data (Unaudited)

(13) Quarterly Financial Data (Unaudited)

Unaudited summarized financial data by quarter for 2015 and 2014 is as follows (in thousands, except per share data):

	Year ended December 31, 2015
	First		Second		Third		Fourth
	Quarter		Quarter		Quarter		Quarter		Year
Operating revenues	$	760,398	$	788,417	$	794,004	$	752,744	$	3,095,563
Operating income		34,075		69,932		78,296		52,212		234,515
Net income		9,620		31,475		36,268		40,454		117,817
Net income per common share:
Basic		0.19		0.61		0.72		0.80		2.31
Diluted		0.18		0.61		0.71		0.78		2.27
Weighted average common shares:
Basic:		51,457		51,357		50,616		50,880		51,077
Diluted:		52,392		51,971		51,282		51,657		51,825

	Year ended December 31, 2014
	First		Second		Third		Fourth
	Quarter		Quarter		Quarter		Quarter		Year
Operating revenues	$	772,386	$	816,574	$	834,633	$	813,854	$	3,237,447
Operating income		(27,774)		13,244		59,080		(19,702)		24,848
Net income (loss)		(22,887)		(14,737)		41,338		(27,868)		(24,154)
Net income (loss) per common share:
Basic		(0.44)		(0.29)		0.81		(0.54)		(0.47)
Diluted		(0.44)		(0.29)		0.79		(0.54)		(0.47)
Weighted average common shares:
Basic:		51,467		51,183		51,127		51,174		51,237
Diluted:		51,467		51,183		52,036		51,174		51,237

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SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS

12 Months Ended

Dec. 31, 2015

SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS

SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS

SKYWEST, INC. AND SUBSIDIARIES

SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS

For the Years Ended December 31, 2015, 2014 and 2013

(Dollars in thousands)

			Additions
	Balance at		Charged to
	Beginning		Costs and			Balance at
Description	of Year		Expenses		Deductions	End of Year
Year ended December 31, 2015:
Allowance for inventory obsolescence	$	11,588		2,345	—	$	13,933
Allowance for doubtful accounts receivable		326		—	(139)		187
		11,914		2,345	(139)	$	14,120
Year ended December 31, 2014:
Allowance for inventory obsolescence	$	10,138		1,450	—	$	11,588
Allowance for doubtful accounts receivable		94		232	—		326
		10,232		1,682	—	$	11,914
Year ended December 31, 2013:
Allowance for inventory obsolescence	$	9,189		949	—	$	10,138
Allowance for doubtful accounts receivable		94		—	—		94
		9,283		949	—		10,232

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Nature of Operations and Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2015

Nature of Operations and Summary of Significant Accounting Policies

Basis of Presentation

Basis of Presentation

The Company’s consolidated financial statements include the accounts of SkyWest, Inc. and its subsidiaries, including SkyWest Airlines and ExpressJet, with all inter‑company transactions and balances having been eliminated.

In preparing the accompanying consolidated financial statements, the Company has reviewed, as determined necessary by the Company’s management, events that have occurred after December 31, 2015, through the filing date of the Company’s annual report with the U.S. Securities and Exchange Commission.

Use of Estimates

Use of Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Cash and Cash Equivalents

Cash and Cash Equivalents

The Company considers all highly liquid investments with an original maturity of three months or less to be cash equivalents. The Company classified  $8.2 million and $11.6 million of cash as restricted cash collateralizing letters of credit under the Company’s workers’ compensation insurance policy and classified it accordingly in the consolidated balance sheets as of December 31, 2015 and 2014, respectively.

Marketable Securities

Marketable Securities

The Company’s investments in marketable debt and equity securities are deemed by management to be available-for-sale and are reported at fair market value with the net unrealized appreciation (depreciation) reported as a component of accumulated other comprehensive income (loss) in stockholders’ equity. At the time of sale, any realized appreciation or depreciation, calculated by the specific identification method, is recognized in other income and expense. The Company’s position in marketable securities as of December 31, 2015 and 2014 was as follows (in thousands):

			Gross unrealized		Gross unrealized
At December 31, 2015	Amortized Cost		holding gains		holding losses		Fair market value
Total cash and cash equivalents	$	203,035	$	—	$	—	$	203,035
Available-for-sale securities:
Bond and bond funds	$	286,857	$	—	$	(220)	$	286,637
Asset backed securities		30		1		—		31
Total available-for-sale securities	$	286,887	$	1	$	(220)	$	286,668
Total cash and cash equivalents and available for sale securities	$	489,922	$	1	$	(220)	$	489,703

			Gross unrealized			Gross unrealized
At December 31, 2014	Amortized Cost		holding gains		holding losses		Fair market value
Total cash and cash equivalents	$	132,275	$	—	$	—	$	132,275
Available-for-sale securities:
Bond and bond funds	$	410,618	$	9	$	(464)	$	410,163
Asset backed securities		5,108		3		(1)		5,110
Total available-for-sale securities	$	415,726	$	12	$	(465)	$	415,273
Total cash and cash equivalents and available for sale securities	$	548,001	$	12	$	(465)	$	547,548

Marketable securities had the following maturities as of December 31, 2015 (in thousands):

Maturities	Amount
Year 2016	$	231,298
Years 2017 through 2020		55,370

As of December 31, 2015 and 2014, the Company had classified $286.7 million and $415.3 million of marketable securities, respectively, as short‑term since it had the intent to maintain a liquid portfolio and the ability to redeem the securities within one year. The Company has classified approximately $2.3 million and $2.3 million of investments as non‑current and has identified them as “Other assets” in the Company’s consolidated balance sheet as of December 31, 2015 and 2014, respectively (see Note 6).

Inventories

Inventories

Inventories include expendable parts, fuel and supplies and are valued at cost (FIFO basis) less an allowance for obsolescence based on historical results and management’s expectations of future operations. Expendable inventory parts are charged to expense as used. An obsolescence allowance for flight equipment expendable parts is accrued based on estimated lives of the corresponding fleet types and salvage values. The inventory allowance as of December 31, 2015 and 2014 was $13.9 million and $11.6 million, respectively. These allowances are based on management estimates, which can be modified based on future changes in circumstances.

Property and Equipment

Property and Equipment

Property and equipment are stated at cost and depreciated over their useful lives to their estimated residual values using the straight‑line method as follows:

Assets	Depreciable Life	Residual Value
New Aircraft	18 years	30	%
Used Aircraft and rotable spares	3 – 10 years	0 - 30	%
Ground equipment	5 – 10 years	0	%
Office equipment	5 – 7 years	0	%
Leasehold improvements	Shorter of 15 years or lease term	0	%
Buildings	20 – 39.5 years	0	%

Impairment of Long-Lived Assets

Impairment of Long-Lived Assets

As of December 31, 2015, the Company had approximately  $5.6 billion of property and equipment and related assets. Additionally, as of December 31, 2015, the Company had approximately $10.5 million in intangible assets. In accounting for these long‑lived and intangible assets, the Company makes estimates about the expected useful lives of the assets, the expected residual values of certain of these assets, and the potential for impairment based on the fair value of the assets and the cash flows they generate. On September 7, 2005, the Company acquired all of the issued and outstanding capital stock of Atlantic Southeast and recorded an intangible asset for specifically identifiable contracts of approximately $33.7 million relating to the acquisition. The intangible asset is being amortized over fifteen years under the straight‑line method. As of December 31, 2015 and 2014, the Company had $23.3 million and $21.0 million in accumulated amortization expense, attributable to the acquisition, respectively. Factors indicating potential impairment include, but are not limited to, significant decreases in the market value of the long‑lived assets, a significant change in the condition of the long‑lived assets and operating cash flow losses associated with the use of the long‑lived assets. On a periodic basis, the Company evaluates whether impairment indicators are present. When considering whether or not impairment of long‑lived assets exists, the Company groups similar assets together at the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets and liabilities and compare the undiscounted cash flows for each asset group to the net carrying amount of the assets supporting the asset group. Asset groupings are done at the fleet or contract level. 

The Company did not recognize any impairment charges of long lived assets during 2015 or 2013.

In 2014, the Company had impairments on several long-lived assets relating to Embraer Brasilia EMB 120 (“EMB120”) turboprop aircraft, ERJ145 aircraft type specific assets and an aircraft paint facility located in Saltillo, Mexico. See Note 8, Special items, for the impairment charges recorded during the year ended December 31, 2014 related to the EMB120 long-lived assets, ERJ145 long-lived assets, Saltillo, Mexico paint facility and related assets.

Capitalized Interest

Capitalized Interest

Interest is capitalized on aircraft purchase deposits as a portion of the cost of the asset and is depreciated over the estimated useful life of the asset. During the years ended December 31, 2015, 2014 and 2013, the Company capitalized interest costs of approximately $2.2 million, $1.8 million, and $1.2 million, respectively.

Maintenance

Maintenance

The Company operates under a FAA approved continuous inspection and maintenance program. The Company uses the direct expense method of accounting for its regional jet engine overhauls wherein the expense is recorded when the overhaul event occurs. The Company has engine services agreements with third-party vendors to provide long-term engine services covering the scheduled and unscheduled repairs for certain of its Bombardier CRJ700 Regional Jets (“CRJ700s”), Embraer  ERJ145 regional jet aircraft and Embraer E-175 jet (“E175”) aircraft. Under the terms of the agreements, the Company pays a fixed dollar amount per engine hour flown on a monthly basis and the third-party vendors will assume the responsibility to repair the engines at no additional cost to the Company, subject to certain specified exclusions. Maintenance costs under these contracts are recognized when the engine hour is flown pursuant to the terms of each contract.

The Company used the “deferral method” of accounting for its EMB120 turboprop aircraft engine overhauls, wherein the overhaul costs were capitalized and depreciated to the next estimated overhaul event, or remaining lease term for leased aircraft, whichever was shorter.  In 2015, the Company removed all of its EMB120 aircraft from service.

The costs of maintenance for airframe and avionics components, landing gear and normal recurring maintenance are expensed as incurred.

Passenger and Ground Handling Revenues

Passenger and Ground Handling Revenues

The Company recognizes passenger and ground handling revenues when the service is provided under its code-share agreements. Under the Company’s fixed fee arrangements (referred to as “fixed-fee arrangements, “contract flying” or “capacity purchase agreements”) with Delta, United, American and Alaska, the major airline generally pays the Company a fixed fee for each departure, flight or block time incurred, and an amount per aircraft in service each month with additional incentives based on completion of flights and on time performance.  The major airline partner also directly reimburses the Company for certain direct expenses incurred under the fixed-fee arrangement such as fuel expense and landing fee expenses.  Under the fixed-fee arrangements, revenue is earned when each flight is completed. 

Under a Revenue Sharing Arrangement (referred to as a “revenue-sharing” or “pro rate” arrangement), the major airline and regional airline negotiate a passenger fare proration formula, pursuant to which the regional airline receives a percentage of the ticket revenues for those passengers traveling for one portion of their trip on the regional airline and the other portion of their trip on the major airline.  Revenue is recognized under the Company’s pro rate flying agreements when each flight is completed based upon the portion of the pro rate passenger fare the Company anticipates that it will receive for each completed flight.

Other ancillary revenues commonly associated with airlines such as baggage fee revenue, ticket change fee revenue and the marketing component of the sale of mileage credits are retained by the Company’s major airline partners on flights that the Company operates under its code-share agreements.

In the event that the contractual rates under the agreements have not been finalized at quarterly or annual financial statement dates, the Company records revenues based on the lower of prior period’s approved rates, as adjusted to reflect any contract negotiations and the Company’s estimate of rates that will be implemented in accordance with revenue recognition guidelines.  In the event the Company has a reimbursement dispute with a major partner, the Company evaluates the dispute under its established revenue recognition criteria and, provided the revenue recognition criteria have been met, the Company recognizes revenue based on management’s estimate of the resolution of the dispute.

In several of the Company’s agreements, the Company is eligible for incentive compensation upon the achievement of certain performance criteria. The incentives are defined in the agreements and are being measured and determined on a monthly, quarterly or semi-annual basis. At the end of each period, the Company calculates the incentives achieved during that period and recognizes revenue accordingly.

The following summarizes the significant provisions of each code share agreement the Company has with each major partner:

Delta Connection Agreements

	Number of		Pass through costs
	aircraft under	Term / Termination	or costs paid directly
Agreement	agreements	Dates	by major partner
SkyWest Airlines	• CRJ 200 - 48	• The contract is scheduled to expire on an individual aircraft basis commencing in 2016	• Fuel
Delta Connection	• CRJ 700 - 19	• The final aircraft is scheduled to expire in 2022	• Engine Maintenance
Agreement (fixed-fee arrangement)	• CRJ 900 - 36	• The average remaining term of the aircraft under contract is 3.8 years	• Landing fees
		• Upon expiration, aircraft may be renewed or extended	• Station Rents, Deice
			• Insurance
ExpressJet Delta	• CRJ 200 - 42	• The contract is scheduled to expire on an individual aircraft basis commencing in 2016	• Fuel
Connection	• CRJ 700 - 41	• The final aircraft is scheduled to expire in 2022	• Engine Maintenance
Agreement (fixed-fee arrangement)	• CRJ 900 - 28	• The average remaining term of the aircraft under contract is 3.7 years	• Landing fees
		• Upon expiration, aircraft may be renewed or extended	• Station Rents, Deice
			• Insurance
SkyWest Airlines	• CRJ 200 - 21	• Terminable with 30 days' notice	• None
Pro-rate Agreement (revenue-sharing agreement)

United Express Agreements

			Pass through costs
	Number of		or costs paid
	aircraft under	Term / Termination	directly by major
Agreement	agreements	Dates	partner
SkyWest Airlines	• CRJ 200 - 57	• The contract is scheduled to expire on an individual aircraft basis commencing in 2016	• Fuel
United Express	• CRJ 700 - 70	• The final aircraft is scheduled to expire in 2027	• Landing fees
Agreements (fixed-fee	• E175 - 40	• The average remaining term of the aircraft under contract is 4.3 years	• Station Rents, Deice
arrangement)		• Upon expiration, aircraft may be renewed or extended	• Insurance
ExpressJet United ERJ	• ERJ 135 - 5	• The contract is scheduled to expire on an individual aircraft basis commencing in 2016	• Fuel
Agreement (fixed-fee arrangement)	• ERJ 145 - 166	• The final aircraft is scheduled to expire in 2017	• Engine Maintenance
		• The average remaining term of the aircraft under contract is 1.9 years	• Landing fees
		• Upon expiration, aircraft may be renewed or extended	• Station Rents, Deice
			• Insurance
SkyWest Airlines United	• CRJ 200 - 26	• Terminable with 120 days' notice	• None
Express Pro-rate Agreement (revenue-sharing arrangement)

Alaska Capacity Purchase Agreement

			Pass through costs
	Number of		or costs paid
	aircraft under	Term / Termination	directly by major
Agreement	agreements	Dates	partner
SkyWest Airlines	• CRJ 700 - 9	• The contract is scheduled to expire on an individual aircraft basis commencing in 2016	• Fuel
Alaska Agreement	• E175 - 5	• The final aircraft is scheduled to expire in 2028	• Landing fees
(fixed-fee arrangement)		• Upon expiration, aircraft may be renewed or extended	• Station Rents, Deice
			• Insurance

American Agreement

			Pass through costs
	Number of		or costs paid
	aircraft under	Term / Termination	directly by major
Agreement	agreements	Dates	partner
SkyWest Airlines	• CRJ 200 - 12	• Scheduled to expire in 2016	• Fuel
American Agreement		• Upon expiration, aircraft may be renewed or extended	• Landing fees
(fixed-fee agreement)			• Station Rents, Deice
			• Insurance
SkyWest Airlines	• CRJ 200 - 5	• Terminable with 120 days' notice	• None
American Pro-rate
Agreement (revenue-
sharing agreement)
ExpressJet American	• CRJ 200 - 11	• Scheduled to expire in 2017	• Fuel
Agreement (fixed-fee	• ERJ 145 - 16	• Upon expiration, aircraft may be renewed or extended	• Landing fees
agreement)			• Station Rents, Deice
			• Insurance
ExpressJet American Pro-rate	• CRJ 200 - 3	• Terminable with 120 days' notice	• None
Agreement (revenue-sharing agreement)

Other Revenue Items

As of December 31, 2015, the Company anticipated placing an additional 25 E175 aircraft with United, ten additional E175 aircraft with Alaska and 19 E175 aircraft with Delta. The delivery dates for the new aircraft are expected to take place from January 2016 to June 2017.

Under the Company’s fixed-fee arrangements, the major airline partners compensate the Company for its costs of owning or leasing the aircraft on a monthly basis. The aircraft compensation structure varies by agreement, but is intended to cover either the Company’s aircraft principal and interest debt service costs, its aircraft depreciation and interest expense or its aircraft lease expense costs while the aircraft is under contract. Under the Company’s ExpressJet United ERJ Agreement and ExpressJet American ERJ145 Agreement, the major partner provides the aircraft to the Company for a nominal amount.

The Company’s passenger and ground handling revenues could be impacted by a number of factors, including changes to the Company’s code‑share agreements with Delta, United, Alaska or American, contract modifications resulting from contract re‑negotiations, the Company’s ability to earn incentive payments contemplated under the Company’s code‑share agreements and settlement of reimbursement disputes with the Company’s major partners.

Under the Company’s fixed-fee agreements with Delta, United, Alaska, and American, the compensation structure generally consists of a combination of agreed‑upon rates for operating flights and direct reimbursement for other certain costs associated with operating the aircraft. A portion of the Company’s contract flying compensation is designed to reimburse the Company for certain aircraft ownership costs. The Company has concluded that a component of its revenue under these agreements is rental income, inasmuch as the agreements identify the “right of use” of a specific type and number of aircraft over a stated period of time. The amounts deemed to be rental income under the agreements for the years ended December 31, 2015, 2014 and 2013 were $504.9 million, $497.0 million and $500.2 million, respectively. These amounts are reflected as passenger revenues on the Company’s consolidated statements of comprehensive income (loss). The Company has not separately stated aircraft rental income and aircraft rental expense in the consolidated statement of comprehensive income (loss) since the use of the aircraft is not a separate activity of the total service provided.

Deferred Aircraft Credits

Deferred Aircraft Credits

The Company accounts for incentives provided by aircraft manufacturers as deferred credits. The deferred credits related to leased aircraft are amortized on a straight‑line basis as a reduction to rent expense over the lease term. Credits related to owned aircraft reduce the purchase price of the aircraft, which has the effect of amortizing the credits on a straight‑line basis as a reduction in depreciation expense over the life of the related aircraft. The incentives are credits that may be used to purchase spare parts and pay for training and other expenses.

Income Taxes

Income Taxes

The Company recognizes a liability or asset for the deferred tax consequences of all temporary differences between the tax basis of assets and liabilities and their reported amounts in the consolidated financial statements that are expected to result in taxable or deductible amounts in future years when the reported amounts of the assets and liabilities are recovered or settled.

Net Income (Loss) Per Common Share

Net Income (Loss) Per Common Share

Basic net income (loss) per common share (“Basic EPS”) excludes dilution and is computed by dividing net income (loss) by the weighted average number of common shares outstanding during the period. Diluted net income (loss) per common share (“Diluted EPS”) reflects the potential dilution that could occur if stock options or other contracts to issue common stock were exercised or converted into common stock. The computation of Diluted EPS does not assume exercise or conversion of securities that would have an anti‑dilutive effect on net income (loss) per common share. During the years ended December 31, 2015, 2014 and 2013, 505,000,  3,191,000 and 3,072,000 shares reserved for issuance upon the exercise of outstanding options were excluded from the computation of Diluted EPS respectively, as their inclusion would be anti‑dilutive.

The calculation of the weighted average number of common shares outstanding for Basic EPS and Diluted EPS are as follows for the years ended December 31, 2015, 2014 and 2013 (in thousands):

	Year Ended December 31,
	2015		2014		2013
Numerator:
Net Income (Loss)	$	117,817	$	(24,154)	$	58,956
Denominator:
Denominator for basic earnings per-share weighted average shares		51,077		51,237		51,688
Dilution due to stock options and restricted stock		748		—		734
Denominator for diluted earnings per-share weighted average shares		51,825		51,237		52,422
Basic earnings (loss) per-share	$	2.31	$	(0.47)	$	1.14
Diluted earnings (loss) per-share	$	2.27	$	(0.47)	$	1.12

Comprehensive Income (Loss)

Comprehensive Income (Loss)

Comprehensive income (loss) includes charges and credits to stockholders’ equity that are not the result of transactions with the Company’s shareholders. Also, comprehensive income (loss) consisted of net income (loss) plus changes in unrealized appreciation (depreciation) on marketable securities and unrealized gain (loss) on foreign currency translation adjustment related to the Company’s equity investment in Trip Linhas Aereas, a regional airline operating in Brazil (“TRIP”) and Mekong Aviation Joint Stock Company, an airline operating in Vietnam (“Air Mekong”).

Fair Value of Financial Instruments

Fair Value of Financial Instruments

The carrying amounts reported in the consolidated balance sheets for receivables and accounts payable approximate fair values because of the immediate or short‑term maturity of these financial instruments. Marketable securities are reported at fair value based on market quoted prices in the consolidated balance sheets. If quoted prices in active markets are no longer available, the Company has estimated the fair values of these securities utilizing a discounted cash flow analysis as of December 31, 2015. These analyses consider, among other items, the collateralization underlying the security investments, the creditworthiness of the counterparty, the timing of expected future cash flows, and the expectation of the next time the security is expected to have a successful auction. The fair value of the Company’s long‑term debt is estimated based on current rates offered to the Company for similar debt and was approximately $1,939.8 million as of December 31, 2015, as compared to the carrying amount of $1,948.8 million as of December 31, 2015. The Company’s fair value of long‑term debt as of December 31, 2014 was $1,813.1 million as compared to the carrying amount of  $1,745.8 million as of December 31, 2014.

Segment Reporting

Segment Reporting

Generally accepted accounting principles require disclosures related to components of a company for which separate financial information is available to, and regularly evaluated by, the Company’s chief operating decision maker when deciding how to allocate resources and in assessing performance. The Company’s three operating segments consist of the operations conducted by SkyWest Airlines and ExpressJet, as well as other activities. Information pertaining to the Company’s reportable segments is presented in Note 2, Segment Reporting.  

Recent Accounting Pronouncements

Recent Accounting Pronouncements

In May 2014, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update No. 2014-09, “Revenue from Contracts with Customers”   (“ASU No. 2014-09”).  Under ASU No. 2014-09, revenue is recognized at the time a good or service is transferred to a customer for the amount of consideration received for that specific good or service. In July 2015, the FASB deferred the effective date of ASU No. 2014-09 to January 1, 2018.  The FASB also proposed permitting early adoption of the standard, but not before January 1, 2017.  Entities may use a full retrospective approach or report the cumulative effect as of the date of adoption. The Company’s management is currently evaluating the impact the adoption of ASU No. 2014-09 is anticipated to have on the Company’s consolidated financial statements.

In April 2015, the FASB issued Accounting Standards Update No. 2015-03, “Simplifying the Presentation of Debt Issuance Costs” (“ASU No. 2015-03”).  In August 2015, ASU No. 2015-03 was amended to modify existing guidance to require the presentation of debt issuance costs in the balance sheet as a deduction from the carrying amount of the related debt liability instead of as a deferred charge. It is effective for annual reporting periods beginning after December 15, 2015, but early adoption is permitted. The Company anticipates reclassifying the unamortized debt issuance costs and present debt net of those unamortized costs on its balance sheet upon adoption of ASU No. 2015-03. As of December 31, 2015, the Company had $20.9 million in unamortized debt issuance costs.

In November 2015, the FASB issued Accounting Standards Update 2015-17, Income Taxes (Topic 740): Balance Sheet Classification of Deferred Taxes (“ASU No. 2015-17”).  The standard requires that deferred tax liabilities and assets be classified as noncurrent in a classified statement of financial position.  The current requirement that deferred tax liabilities and assets of a tax-paying component of an entity be offset and presented as a single amount is not affected by ASU No. 2015-17.  ASU No. 2015-17 is effective for annual periods beginning after December 15, 2016, and interim periods within those annual periods.  The Company’s management is currently evaluating the impact the adoption of ASU No. 2015-17 is anticipated to have on the Company’s consolidated financial statements.

Immaterial error correction to consolidated balance sheet

Immaterial error correction to consolidated balance sheet

In connection with the preparation of the Company’s consolidated financial statements for the year ended December 31, 2015, the Company determined that certain non-current prepaid aircraft rents previously reported were improperly presented as current on the Company’s consolidated balance sheet at December 31, 2014. As a result, current prepaid aircraft rents, as previously reported, were overstated by $201.5 million and non-current prepaid aircraft rents were understated by $201.5 million. The Company concluded that the error was not material to the consolidated balance sheet, but has elected to correct the error in the accompanying 2014 consolidated financial statements for consistency of presentation. The classification error had no effect on the consolidated statements of comprehensive income (loss), stockholders’ equity, or cash flows for the year ended December 31, 2014.

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Nature of Operations and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2015

Nature of operations and significant accounting policies summary

Schedule of details of aircraft and agreements with other airlines

As of December 31, 2015, the Company had a combined fleet of 702 aircraft consisting of the following:

	CRJ200	CRJ700	CRJ900	ERJ135	ERJ145	E175	EMB120	Total
United	83	70	—	5	166	40	—	364
Delta	111	60	64	—	—	—	—	235
American	31	—	—	—	16	—	—	47
Alaska	—	9	—	—	—	5	—	14
Aircraft in scheduled service	225	139	64	5	182	45	—	660
Subleased to an un-affiliated entity	2	—	—	—	—	—	—	2
Other*	10	—	—	4	—	—	26	40
Total	237	139	64	9	182	45	26	702

*Other aircraft consisted of leased aircraft removed from service that were in the process of being returned to the lessor and owned aircraft removed from service that were held for sale.

Schedule of the Company's position in marketable securities

The Company’s position in marketable securities as of December 31, 2015 and 2014 was as follows (in thousands):

			Gross unrealized		Gross unrealized
At December 31, 2015	Amortized Cost		holding gains		holding losses		Fair market value
Total cash and cash equivalents	$	203,035	$	—	$	—	$	203,035
Available-for-sale securities:
Bond and bond funds	$	286,857	$	—	$	(220)	$	286,637
Asset backed securities		30		1		—		31
Total available-for-sale securities	$	286,887	$	1	$	(220)	$	286,668
Total cash and cash equivalents and available for sale securities	$	489,922	$	1	$	(220)	$	489,703

			Gross unrealized			Gross unrealized
At December 31, 2014	Amortized Cost		holding gains		holding losses		Fair market value
Total cash and cash equivalents	$	132,275	$	—	$	—	$	132,275
Available-for-sale securities:
Bond and bond funds	$	410,618	$	9	$	(464)	$	410,163
Asset backed securities		5,108		3		(1)		5,110
Total available-for-sale securities	$	415,726	$	12	$	(465)	$	415,273
Total cash and cash equivalents and available for sale securities	$	548,001	$	12	$	(465)	$	547,548

Schedule of maturities of marketable securities

Marketable securities had the following maturities as of December 31, 2015 (in thousands):

Maturities	Amount
Year 2016	$	231,298
Years 2017 through 2020		55,370

Schedule of property and equipment

Assets	Depreciable Life	Residual Value
New Aircraft	18 years	30	%
Used Aircraft and rotable spares	3 – 10 years	0 - 30	%
Ground equipment	5 – 10 years	0	%
Office equipment	5 – 7 years	0	%
Leasehold improvements	Shorter of 15 years or lease term	0	%
Buildings	20 – 39.5 years	0	%

Net income with per share data and comprehensive income

Schedule of net income (loss) per common share

	Year Ended December 31,
	2015		2014		2013
Numerator:
Net Income (Loss)	$	117,817	$	(24,154)	$	58,956
Denominator:
Denominator for basic earnings per-share weighted average shares		51,077		51,237		51,688
Dilution due to stock options and restricted stock		748		—		734
Denominator for diluted earnings per-share weighted average shares		51,825		51,237		52,422
Basic earnings (loss) per-share	$	2.31	$	(0.47)	$	1.14
Diluted earnings (loss) per-share	$	2.27	$	(0.47)	$	1.12

Delta Connection Agreements

Nature of operations and significant accounting policies summary

Schedule of details of aircraft and agreements with other airlines

	Number of		Pass through costs
	aircraft under	Term / Termination	or costs paid directly
Agreement	agreements	Dates	by major partner
SkyWest Airlines	• CRJ 200 - 48	• The contract is scheduled to expire on an individual aircraft basis commencing in 2016	• Fuel
Delta Connection	• CRJ 700 - 19	• The final aircraft is scheduled to expire in 2022	• Engine Maintenance
Agreement (fixed-fee arrangement)	• CRJ 900 - 36	• The average remaining term of the aircraft under contract is 3.8 years	• Landing fees
		• Upon expiration, aircraft may be renewed or extended	• Station Rents, Deice
			• Insurance
ExpressJet Delta	• CRJ 200 - 42	• The contract is scheduled to expire on an individual aircraft basis commencing in 2016	• Fuel
Connection	• CRJ 700 - 41	• The final aircraft is scheduled to expire in 2022	• Engine Maintenance
Agreement (fixed-fee arrangement)	• CRJ 900 - 28	• The average remaining term of the aircraft under contract is 3.7 years	• Landing fees
		• Upon expiration, aircraft may be renewed or extended	• Station Rents, Deice
			• Insurance
SkyWest Airlines	• CRJ 200 - 21	• Terminable with 30 days' notice	• None
Pro-rate Agreement (revenue-sharing agreement)

United Express Agreements

Nature of operations and significant accounting policies summary

Schedule of details of aircraft and agreements with other airlines

			Pass through costs
	Number of		or costs paid
	aircraft under	Term / Termination	directly by major
Agreement	agreements	Dates	partner
SkyWest Airlines	• CRJ 200 - 57	• The contract is scheduled to expire on an individual aircraft basis commencing in 2016	• Fuel
United Express	• CRJ 700 - 70	• The final aircraft is scheduled to expire in 2027	• Landing fees
Agreements (fixed-fee	• E175 - 40	• The average remaining term of the aircraft under contract is 4.3 years	• Station Rents, Deice
arrangement)		• Upon expiration, aircraft may be renewed or extended	• Insurance
ExpressJet United ERJ	• ERJ 135 - 5	• The contract is scheduled to expire on an individual aircraft basis commencing in 2016	• Fuel
Agreement (fixed-fee arrangement)	• ERJ 145 - 166	• The final aircraft is scheduled to expire in 2017	• Engine Maintenance
		• The average remaining term of the aircraft under contract is 1.9 years	• Landing fees
		• Upon expiration, aircraft may be renewed or extended	• Station Rents, Deice
			• Insurance
SkyWest Airlines United	• CRJ 200 - 26	• Terminable with 120 days' notice	• None
Express Pro-rate Agreement (revenue-sharing arrangement)

Alaska Capacity Purchase Agreement

Nature of operations and significant accounting policies summary

Schedule of details of aircraft and agreements with other airlines

			Pass through costs
	Number of		or costs paid
	aircraft under	Term / Termination	directly by major
Agreement	agreements	Dates	partner
SkyWest Airlines	• CRJ 700 - 9	• The contract is scheduled to expire on an individual aircraft basis commencing in 2016	• Fuel
Alaska Agreement	• E175 - 5	• The final aircraft is scheduled to expire in 2028	• Landing fees
(fixed-fee arrangement)		• Upon expiration, aircraft may be renewed or extended	• Station Rents, Deice
			• Insurance

American Agreements

Nature of operations and significant accounting policies summary

Schedule of details of aircraft and agreements with other airlines

			Pass through costs
	Number of		or costs paid
	aircraft under	Term / Termination	directly by major
Agreement	agreements	Dates	partner
SkyWest Airlines	• CRJ 200 - 12	• Scheduled to expire in 2016	• Fuel
American Agreement		• Upon expiration, aircraft may be renewed or extended	• Landing fees
(fixed-fee agreement)			• Station Rents, Deice
			• Insurance
SkyWest Airlines	• CRJ 200 - 5	• Terminable with 120 days' notice	• None
American Pro-rate
Agreement (revenue-
sharing agreement)
ExpressJet American	• CRJ 200 - 11	• Scheduled to expire in 2017	• Fuel
Agreement (fixed-fee	• ERJ 145 - 16	• Upon expiration, aircraft may be renewed or extended	• Landing fees
agreement)			• Station Rents, Deice
			• Insurance
ExpressJet American Pro-rate	• CRJ 200 - 3	• Terminable with 120 days' notice	• None
Agreement (revenue-sharing agreement)

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Segment Reporting (Tables)

12 Months Ended

Dec. 31, 2015

Segment Reporting

Schedule of Company's segment data

The following represents the Company’s segment data for the years ended December 31, 2015, 2014 and 2013 (in thousands).

		Year Ended December 31, 2015
		SkyWest
		Airlines		ExpressJet		SkyWest Leasing		Consolidated
Operating revenues	$	1,848,363	$	1,169,923	$	77,277	$	3,095,563
Operating expense		1,630,200		1,192,070		38,778		2,861,048
Depreciation and amortization expense		141,189		86,382		36,936		264,507
Interest expense		36,141		12,091		27,618		75,850
Segment profit (loss) (1)		182,022		(34,238)		10,881		158,665
Identifiable intangible assets, other than goodwill		—		10,499		—		10,499
Total assets		2,319,295		1,332,995		1,150,596		4,802,886
Capital expenditures (including non-cash)		30,897		24,679		659,513		715,089

		Year Ended December 31, 2014
		SkyWest
		Airlines		ExpressJet		SkyWest Leasing		Consolidated
Operating revenues	$	1,873,675	$	1,346,859	$	16,913	$	3,237,447
Operating expense		1,758,145		1,446,050		8,404		3,212,599
Depreciation and amortization expense		162,699		88,459		8,484		259,642
Interest expense		39,452		18,754		7,789		65,995
Segment profit (loss) (1)		76,078		(117,945)		720		(41,147)
Identifiable intangible assets, other than goodwill		—		12,748		—		12,748
Total assets		2,492,828		1,390,129		526,971		4,409,928
Capital expenditures (including non-cash)		137,678		23,790		535,455		696,923

		Year Ended December 31, 2013
		SkyWest
		Airlines		ExpressJet		SkyWest Leasing		Consolidated
Operating revenues	$	1,827,568	$	1,466,341	$	3,816	$	3,297,725
Operating expense		1,644,129		1,494,302		6,183		3,144,614
Depreciation and amortization expense		155,667		89,338		—		245,005
Interest expense		43,920		21,034		3,704		68,658
Segment profit (loss) (1)		139,519		(48,995)		(6,071)		84,453
Identifiable intangible assets, other than goodwill		—		14,998		—		14,998
Total assets		2,532,431		1,700,788		—		4,233,219
Capital expenditures (including non-cash)		103,387		38,657		—		142,044

Segment profit is operating income less interest expense

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Long-term Debt (Tables)

12 Months Ended

Dec. 31, 2015

Long-term Debt

Schedule of long-term debt

Long‑term debt consisted of the following as of December 31, 2015 and 2014 (in thousands):

	December 31,		December 31,
	2015		2014
Notes payable to banks, due in semi-annual installments, variable interest based on LIBOR, or with interest rates ranging from 1.29% to 2.22% through 2016 to 2020, secured by aircraft	$	108,348	$	174,159
Notes payable to a financing company, due in semi-annual installments, variable interest based on LIBOR, or with interest rates ranging from 1.76% to 3.25% through 2017 to 2021, secured by aircraft		217,341		350,177
Notes payable to banks, due in semi-annual installments plus interest at 6.06% to 6.51% through 2021, secured by aircraft		108,069		129,201
Notes payable to a financing company, due in semi-annual installments plus interest at 5.78% to 6.23% through 2017, secured by aircraft		17,208		25,090
Notes payable to banks, due in monthly installments plus interest of 2.68% to 6.86% through 2025, secured by aircraft		479,170		572,446
Notes payable to banks, due in monthly installments, plus interest at 6.05% through 2020, secured by aircraft		11,304		13,551
Notes payable to banks, due in monthly installments, plus interest at 3.10% through 2019, secured by aircraft		4,615		5,909
Notes payable to banks, due in quarterly installments plus interest at 3.39% to 4.02% through 2027, secured by aircraft		966,156		446,724
Notes payable to banks, due in monthly installments, plus interest based on LIBOR at 3.21% to 3.33% through 2017, secured by aircraft		14,538		28,554
Notes payable to banks due in monthly installments, interest at 3.30% through 2019, secured by spare engines		22,054		—
Long-term debt	$	1,948,803	$	1,745,811
Less current maturities		(272,027)		(211,821)
Long-term debt, net of current maturities	$	1,676,776	$	1,533,990

Schedule of maturities of long-term debt

The aggregate amounts of principal maturities of long‑term debt as of December 31, 2015 were as follows (in thousands):

2016	$	272,027
2017		248,629
2018		230,681
2019		223,898
2020		183,620
Thereafter		789,948
	$	1,948,803

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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2015

Income Taxes

Schedule of components of provision for income taxes

The provision for income taxes includes the following components (in thousands):

	Year ended December 31,
	2015		2014		2013
Current tax provision (benefit):
Federal	$	3,801	$	(176)	$	1,767
State		1,035		838		343
Foreign		—		2,081		—
		4,836		2,743		2,110
Deferred tax provision (benefit):
Federal		66,430		4,697		34,728
State		5,239		371		2,738
		71,669		5,068		37,466
Provision for income taxes	$	76,505	$	7,811	$	39,576

Schedule of income tax rate reconciliation

The following is a reconciliation between the statutory federal income tax rate of 35% and the effective rate which is derived by dividing the provision for income taxes by income (loss) before for income taxes (in thousands):

	Year ended December 31,
	2015		2014		2013
Computed provision (benefit) for income taxes at the statutory rate	$	68,013	$	(5,720)	$	34,486
Increase (decrease) in income taxes resulting from:
State income tax provision (benefit), net of federal income tax benefit		5,416		(107)		2,867
Non-deductible expenses		3,641		3,865		3,257
Valuation allowance changes affecting the provision for income taxes		(899)		5,981		1,430
Foreign income taxes, net of federal & state benefit		—		1,973
Other, net		334		1,819		(2,464)
Provision for income taxes	$	76,505	$	7,811	$	39,576

Schedule of components of the net deferred tax assets and liabilities

The significant components of the Company’s net deferred tax assets and liabilities as of December 31, 2015 and 2014 are as follows (in thousands):

	As of December 31,
	2015		2014
Deferred tax assets:
Intangible Asset	$	30,369	$	34,819
Accrued benefits		47,514		43,853
Net operating loss carryforward		82,211		152,361
AMT credit carryforward		21,391		17,590
Deferred aircraft credits		55,544		53,797
Accrued reserves and other		24,575		27,008
Total deferred tax assets		261,604		329,428
Valuation allowance		(8,126)		(9,025)
Deferred tax liabilities:
Accelerated depreciation		(902,322)		(895,405)
Total deferred tax liabilities		(902,322)		(895,405)
Net deferred tax liability	$	(648,844)	$	(575,002)

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Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2015

Commitments and Contingencies

Schedule of Future Minimum Rental Payments for Operating Leases

The following table summarizes future minimum rental payments required under operating leases that have non‑cancelable lease terms as of December 31, 2015 (in thousands):

Year ended December 31,
2016	$	269,520
2017		192,122
2018		154,077
2019		121,107
2020		133,659
Thereafter		349,038
	$	1,219,523

Schedule of Employees Under Collective Bargaining Agreements

	Approximate
	Number of
	Active Employees		Status of
Employee Group	Represented	Representatives	Agreement
Atlantic Southeast Pilots	1,491	Air Line Pilots Association International	Amendable February 2018
Atlantic Southeast Flight Attendants	1,031	International Association of Machinists and Aerospace Workers	Amendable
Atlantic Southeast Flight Controllers	36	Transport Workers Union of America	Amendable
Atlantic Southeast Mechanics	364	International Brotherhood of Teamsters	Amendable
Atlantic Southeast Stock Clerks	73	International Brotherhood of Teamsters	Amendable
ExpressJet Delaware Pilots	2,107	Air Line Pilots Association International	Amendable February 2018
ExpressJet Delaware Flight Attendants	993	International Association of Machinists and Aerospace Workers	Amendable
ExpressJet Delaware Mechanics	711	International Brotherhood of Teamsters	Amendable
ExpressJet Delaware Dispatchers	53	Transport Workers Union of America	Amendable
ExpressJet Delaware Stock Clerks	96	International Brotherhood of Teamsters	Amendable

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Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2015

Fair Value Measurements

Schedule of assets measured at fair value on a recurring basis

As of December 31, 2015, the Company held certain assets that are required to be measured at fair value on a recurring basis. Assets measured at fair value on a recurring basis are summarized below (in thousands):

	Fair Value Measurements as of December 31, 2015
	Total			Level 1		Level 2		Level 3
Marketable Securities
Bonds	$	286,637		$	—	$	286,637	$	—
Commercial paper		31			—		31		—
Asset backed securities	$	286,668		$	—	$	286,668	$	—
Cash, Cash Equivalents and Restricted Cash		211,251			211,251		—		—
Other Assets(a)		2,321	(a)		—		—		2,321
Total Assets Measured at Fair Value	$	500,240		$	211,251	$	286,668	$	2,321

	Fair Value Measurements as of December 31, 2014
	Total		Level 1		Level 2		Level 3
Marketable Securities
Bonds	$	410,163	$	—	$	410,163	$	—
Commercial paper		5,110		—		5,110		—
Asset backed securities		415,273		—		415,273		—
Cash, Cash Equivalents and Restricted Cash		143,857		143,857		—		—
Other Assets(a)		2,309		—		—		2,309
Total Assets Measured at Fair Value	$	561,439	$	143,857	$	415,273	$	2,309

(a) Auction rate securities included in long-term “Other assets” in the Consolidated Balance Sheet

Schedule of fair value measurements using significant unobservable inputs

The following table presents the Company’s assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) at December 31, 2015 (in thousands):

Fair Value Measurements Using Significant Unobservable Inputs

(Level 3)

	Auction Rate
	Securities
Balance at January 1, 2015	$	2,309
Total realized and unrealized gains or (losses)
Included in earnings		—
Included in other comprehensive income		12
Transferred out		—
Settlements		—
Balance at December 31, 2015	$	2,321

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Special Items (Tables)

12 Months Ended

Dec. 31, 2015

Special Items

Summary of the components of special items

The following table summarizes the components of the Company's special items, for the year ended December 31, 2015, 2014 and 2013 (in thousands):

	Year ended December 31,
	2015		2014		2013
Special items:
EMB120 aircraft related items 1	$	—	$	57,046	$	—
ERJ145 aircraft related items 2		—		12,931		—
Paint facility and related items 3		—		4,800		—
Total special items	$	—	$	74,777	$	—

(1) Consists primarily of impairment charges to write-down owned EMB120 aircraft including capitalized engine overhaul costs, and related long-lived assets to their estimated fair value write down of $48.3 million and accrued obligations on leased aircraft and related costs of $8.8 million. The estimated fair value of the long-lived assets was based on third party valuations for similar assets which is considered an unobservable input (Level 3) under the fair value hierarchy.  In November 2014, the Company approved a plan to discontinue operating the EMB120 aircraft by the end of the second quarter of 2015.  The decision to discontinue use of the EMB120 aircraft included management’s assessment of the need for pilots to operate upcoming deliveries for the E175 aircraft, the incremental training cost to hire new pilots compared to retraining existing EMB120 pilots to operate CRJ or E175 aircraft, and the uncertainty related to the number of qualified pilots available for hire, combined with the overall age and increased operating costs of the Company’s EMB120 fleet.  These special items are reflected in the SkyWest Airlines operating expenses under Note 2 Segment Reporting.

(2) Consists primarily of impairment charges to write-down certain ERJ145 long-lived assets, which primarily consisted of spare engines and ERJ145 spare aircraft parts, to their estimated fair value of $11.4 million  and accrued obligations on leased aircraft and related costs of $1.5 million.  The estimated fair value of the long-lived assets was based on third party valuations for similar assets which is considered an unobservable input (Level 3) under the fair value hierarchy.   In November 2014, the Company entered into an amended and restated contract with United that accelerated the lease terminations of certain ERJ145 aircraft and accelerated the termination date of the Company’s flying contract to operate the ERJ145s with United from the year 2020 to 2017.  The reduced term shortened the anticipated useful life of the ERJ145 long-lived assets which triggered the impairment evaluation.   These special items are reflected in the ExpressJet operating expenses under Note 2 Segment Reporting.

(3) Consists primarily of the write-down of assets associated with the disposition of the Company’s paint facility located in Saltillo, Mexico, which was sold during the year ended December 31, 2014.  These special items are reflected in the ExpressJet operating expenses under Note 2 Segment Reporting.

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Capital Transactions (Tables)

12 Months Ended

Dec. 31, 2015

Schedule of assumptions used and weighted average fair value for stock option grants

	2015			2014			2013
Expected annual dividend rate		1.18	%		1.32	%		1.21	%
Risk-free interest rate		1.62	%		1.50	%		0.92	%
Average expected life (years)		5.7			5.8			6.0
Expected volatility of common stock		0.401			0.431			0.446
Forfeiture rate		0.0	%		0.0	%		0.0	%
Weighted average fair value of option grants	$	4.75		$	4.47		$	5.04

Schedule of restricted stock activity

			Weighted-Average
			Grant-Date Fair
	Number of Shares		Value
Non-vested shares outstanding at December 31, 2012	698,885	$	14.21
Granted	282,651		13.43
Vested	(202,012)		14.51
Cancelled	(45,933)		13.69
Non-vested shares outstanding at December 31, 2013	733,591		13.79
Granted	312,749		12.00
Vested	(284,891)		14.74
Cancelled	(38,273)		12.83
Non-vested shares outstanding at December 31, 2014	723,176		12.70
Granted	408,163		13.57
Vested	(215,856)		13.06
Cancelled	(106,184)		13.52
Non-vested shares outstanding at December 31, 2015	809,299		13.13

Schedule of stock option activity

	2015							2014			2013
				Weighted
		Weighted		Average			Aggregate		Weighted			Weighted
		Average		Remaining			Intrinsic		Average			Average
	Number of	Exercise		Contractual			Value	Number of	Exercise		Number of	Exercise
	Options	Price		Term			($000)	Options	Price		Options	Price
Outstanding at beginning of year	2,888,074	$	16.46	1.7	years	$	—	3,407,575	$	17.99	3,653,859	$	18.44
Granted	267,433		13.63					255,503		11.96	173,560		13.24
Exercised	(544,917)		14.68					(6,701)		12.10	(75,080)		10.91
Cancelled	(1,546,161)		18.53					(768,303)		6.81	(344,764)		20.67
Outstanding at end of year	1,064,429		13.64	3.7	years	$	5,726.7	2,888,074		16.46	3,407,575		17.99
Exercisable at December 31, 2015	484,747		14.46	1.7	years	$	2,212.5
Exercisable at December 31, 2014	2,324,336		17.39	0.8	years		—

Schedule of non-vested stock options

The following table summarizes the status of the Company’s non‑vested stock options as of December 31, 2015:

		Weighted-Average
	Number of	Grant-Date
	Shares	Fair Value
Non-vested shares at beginning of year	563,738	$	4.56
Granted	267,433		4.92
Vested	(187,403)		4.43
Cancelled	(64,086)		4.65
Non-vested shares at end of year	579,682	$	4.75

Schedule of stock options outstanding

The following table summarizes information about the Company’s stock options outstanding at December 31, 2015:

			Options Outstanding					Options Exercisable
				Weighted Average
			Number	Remaining		Weighted Average		Number	Weighted Average
Range of Exercise Prices			Outstanding	Contractual Life		Exercise Price		Exercisable	Exercise Price
$8	to	$11	19,458	5.4	years	$	11.10	—	$	—
$12	to	$14	859,595	4.1	years		13.31	305,331		13.90
$15	to	$18	185,376	1.4	years		15.43	179,416		15.64
$8	to	$18	1,064,429	3.7	years	$	13.64	484,747	$	14.46

Performance Share Units

Schedule of non-vested stock options

The following table summarizes the activity of performance share units granted at target as of December 31, 2015.

			Weighted-Average
			Grant-Date Fair
	Number of Shares		Value
Non-vested shares outstanding at December 31, 2014	—	$	—
Granted	222,583		13.61
Vested	—		—
Cancelled	(19,754)		13.51
Non-vested shares outstanding at December 31, 2015	202,829	$	13.62

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Retirement Plans and Employee Stock Purchase Plans (Tables)

12 Months Ended

Dec. 31, 2015

Retirement Plans and Employee Stock Purchase Plans

Schedule of purchases made under the 2009 Employee Stock Purchase Plans

	Year ended December 31,
	2015		2014		2013
Number of shares purchased		254,098		295,035		299,786
Average price of shares purchased	$	13.50	$	12.72	$	12.33

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Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2015

Quarterly Financial Data (Unaudited)

Schedule of Quarterly Financial Data (Unaudited)

Unaudited summarized financial data by quarter for 2015 and 2014 is as follows (in thousands, except per share data):

	Year ended December 31, 2015
	First		Second		Third		Fourth
	Quarter		Quarter		Quarter		Quarter		Year
Operating revenues	$	760,398	$	788,417	$	794,004	$	752,744	$	3,095,563
Operating income		34,075		69,932		78,296		52,212		234,515
Net income		9,620		31,475		36,268		40,454		117,817
Net income per common share:
Basic		0.19		0.61		0.72		0.80		2.31
Diluted		0.18		0.61		0.71		0.78		2.27
Weighted average common shares:
Basic:		51,457		51,357		50,616		50,880		51,077
Diluted:		52,392		51,971		51,282		51,657		51,825

	Year ended December 31, 2014
	First		Second		Third		Fourth
	Quarter		Quarter		Quarter		Quarter		Year
Operating revenues	$	772,386	$	816,574	$	834,633	$	813,854	$	3,237,447
Operating income		(27,774)		13,244		59,080		(19,702)		24,848
Net income (loss)		(22,887)		(14,737)		41,338		(27,868)		(24,154)
Net income (loss) per common share:
Basic		(0.44)		(0.29)		0.81		(0.54)		(0.47)
Diluted		(0.44)		(0.29)		0.79		(0.54)		(0.47)
Weighted average common shares:
Basic:		51,467		51,183		51,127		51,174		51,237
Diluted:		51,467		51,183		52,036		51,174		51,237

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Nature of Operations and Summary of Significant Accounting Policies (Details)	12 Months Ended
	Dec. 31, 2015 item aircraft
Agreements with other airlines
Number of daily departures to different destinations | item	3,400
Number of aircrafts held by entity	702
United
Agreements with other airlines
Number of aircrafts held by entity	364
Percentage of aggregate capacity operated	57.50%
Delta
Agreements with other airlines
Number of aircrafts held by entity	235
Percentage of aggregate capacity operated	33.20%
American
Agreements with other airlines
Number of aircrafts held by entity	47
Percentage of aggregate capacity operated	6.40%
Alaska
Agreements with other airlines
Number of aircrafts held by entity	14
Percentage of aggregate capacity operated	2.90%
Aircraft in scheduled service
Agreements with other airlines
Number of aircrafts held by entity	660
Subleased to an un-affiliated entity
Agreements with other airlines
Number of aircrafts held by entity	2
Other
Agreements with other airlines
Number of aircrafts held by entity	40
CRJ 200
Agreements with other airlines
Number of aircrafts held by entity	237
CRJ 200 | United
Agreements with other airlines
Number of aircrafts held by entity	83
CRJ 200 | Delta
Agreements with other airlines
Number of aircrafts held by entity	111
CRJ 200 | American
Agreements with other airlines
Number of aircrafts held by entity	31
CRJ 200 | Aircraft in scheduled service
Agreements with other airlines
Number of aircrafts held by entity	225
CRJ 200 | Subleased to an un-affiliated entity
Agreements with other airlines
Number of aircrafts held by entity	2
CRJ 200 | Other
Agreements with other airlines
Number of aircrafts held by entity	10
CRJ 700
Agreements with other airlines
Number of aircrafts held by entity	139
CRJ 700 | United
Agreements with other airlines
Number of aircrafts held by entity	70
CRJ 700 | Delta
Agreements with other airlines
Number of aircrafts held by entity	60
CRJ 700 | Alaska
Agreements with other airlines
Number of aircrafts held by entity	9
CRJ 700 | Aircraft in scheduled service
Agreements with other airlines
Number of aircrafts held by entity	139
CRJ 900
Agreements with other airlines
Number of aircrafts held by entity	64
CRJ 900 | Delta
Agreements with other airlines
Number of aircrafts held by entity	64
CRJ 900 | Aircraft in scheduled service
Agreements with other airlines
Number of aircrafts held by entity	64
ERJ135
Agreements with other airlines
Number of aircrafts held by entity	9
ERJ135 | United
Agreements with other airlines
Number of aircrafts held by entity	5
ERJ135 | Aircraft in scheduled service
Agreements with other airlines
Number of aircrafts held by entity	5
ERJ135 | Other
Agreements with other airlines
Number of aircrafts held by entity	4
ERJ 145
Agreements with other airlines
Number of aircrafts held by entity	182
ERJ 145 | United
Agreements with other airlines
Number of aircrafts held by entity	166
ERJ 145 | American
Agreements with other airlines
Number of aircrafts held by entity	16
ERJ 145 | Aircraft in scheduled service
Agreements with other airlines
Number of aircrafts held by entity	182
E 175
Agreements with other airlines
Number of aircrafts held by entity	45
E 175 | United
Agreements with other airlines
Number of aircrafts held by entity	40
E 175 | Alaska
Agreements with other airlines
Number of aircrafts held by entity	5
E 175 | Aircraft in scheduled service
Agreements with other airlines
Number of aircrafts held by entity	45
EMB 120
Agreements with other airlines
Number of aircrafts held by entity	26
EMB 120 | Other
Agreements with other airlines
Number of aircrafts held by entity	26

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Nature of Operations and Summary of Significant Accounting Policies (Details 2) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Nature of Operations and Summary of Significant Accounting Policies
Restricted cash	$ 8,216	$ 11,582

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Nature of Operations and Summary of Significant Accounting Policies (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Maturities of marketable securities
Year 2016	$ 231,298
Years 2017 through 2020	55,370
Marketable securities	$ 286,700	$ 415,300
Maximum period for redemption	1 year
Investment as non-current	$ 2,300	2,300
Total cash and cash equivalents	203,035	132,275	$ 170,636	$ 133,772
Amortized Cost	286,887	415,726
Gross unrealized holding gains	1	12
Gross unrealized holding losses	(220)	(465)
Marketable securities	286,668	415,273
Total cash and cash equivalents and available for sale securities, amortized cost	489,922	548,001
Total cash and cash equivalents and available for sale securities, fair market value	489,703	547,548
Bonds and bond funds
Maturities of marketable securities
Amortized Cost	286,857	410,618
Gross unrealized holding gains		9
Gross unrealized holding losses	(220)	(464)
Marketable securities	286,637	410,163
Asset-backed Securities
Maturities of marketable securities
Amortized Cost	30	5,108
Gross unrealized holding gains	1	3
Gross unrealized holding losses		(1)
Marketable securities	$ 31	$ 5,110

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Nature of Operations and Summary of Significant Accounting Policies (Details 4) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Inventories
Inventory allowance	$ 13.9	$ 11.6

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Nature of Operations and Summary of Significant Accounting Policies (Details 5)	12 Months Ended
	Dec. 31, 2015
New aircraft
Property and Equipment
Depreciable Life	18 years
Residual Value (as a percent)	30.00%
Used Aircraft and rotable spares | Minimum
Property and Equipment
Depreciable Life	3 years
Residual Value (as a percent)	0.00%
Used Aircraft and rotable spares | Maximum
Property and Equipment
Depreciable Life	10 years
Residual Value (as a percent)	30.00%
Ground equipment
Property and Equipment
Residual Value (as a percent)	0.00%
Ground equipment | Minimum
Property and Equipment
Depreciable Life	5 years
Ground equipment | Maximum
Property and Equipment
Depreciable Life	10 years
Office Equipment
Property and Equipment
Residual Value (as a percent)	0.00%
Office Equipment | Minimum
Property and Equipment
Depreciable Life	5 years
Office Equipment | Maximum
Property and Equipment
Depreciable Life	7 years
Leasehold Improvements
Property and Equipment
Residual Value (as a percent)	0.00%
Leasehold Improvements | Minimum
Property and Equipment
Depreciable Life	15 years
Buildings
Property and Equipment
Residual Value (as a percent)	0.00%
Buildings | Minimum
Property and Equipment
Depreciable Life	20 years
Buildings | Maximum
Property and Equipment
Depreciable Life	39 years 6 months

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Nature of Operations and Summary of Significant Accounting Policies (Details 6) - USD ($) $ in Thousands	Sep. 07, 2005	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Impairment of Long Lived and Intangible Assets
Property and equipment and related assets		$ 5,556,728	$ 4,923,563
Intangible assets		10,499	12,748	$ 14,998
Atlantic Southeast Airlines Inc
Impairment of Long Lived and Intangible Assets
Intangible assets related to acquisition of Atlantic Southeast	$ 33,700
Period for amortization of intangible assets	15 years
Accumulated amortization expense		$ 23,300	$ 21,000

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Nature of Operations and Summary of Significant Accounting Policies (Details 7) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Capitalized Interest
Capitalized interest costs	$ 2.2	$ 1.8	$ 1.2

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Nature of Operations and Summary of Significant Accounting Policies (Details 8) - aircraft	12 Months Ended	18 Months Ended
	Dec. 31, 2015	Jun. 30, 2017
Delta Connection Agreements | Forecast
Agreements with other airlines
Number of aircraft under contract		19
Delta Connection Agreements | ExpressJet
Agreements with other airlines
Term of agreement	3 years 8 months 12 days
Delta Connection Agreements | Sky West Airlines Inc
Agreements with other airlines
Term of agreement	3 years 9 months 18 days
Delta Connection Agreements | CRJ 200 | ExpressJet
Agreements with other airlines
Number of aircraft under contract	42
Delta Connection Agreements | CRJ 200 | Sky West Airlines Inc
Agreements with other airlines
Number of aircraft under contract	48
Delta Connection Agreements | CRJ 700 | ExpressJet
Agreements with other airlines
Number of aircraft under contract	41
Delta Connection Agreements | CRJ 700 | Sky West Airlines Inc
Agreements with other airlines
Number of aircraft under contract	19
Delta Connection Agreements | CRJ 900 | ExpressJet
Agreements with other airlines
Number of aircraft under contract	28
Delta Connection Agreements | CRJ 900 | Sky West Airlines Inc
Agreements with other airlines
Number of aircraft under contract	36
United Express Agreements | Forecast
Agreements with other airlines
Number of aircraft under contract		25
United Express Agreements | ExpressJet
Agreements with other airlines
Term of agreement	1 year 10 months 24 days
United Express Agreements | Sky West Airlines Inc
Agreements with other airlines
Term of agreement	4 years 3 months 18 days
United Express Agreements | CRJ 200 | Sky West Airlines Inc
Agreements with other airlines
Number of aircraft under contract	57
United Express Agreements | CRJ 700 | Sky West Airlines Inc
Agreements with other airlines
Number of aircraft under contract	70
United Express Agreements | E 175 | Sky West Airlines Inc
Agreements with other airlines
Number of aircraft under contract	40
United Express Agreements | ERJ135 | ExpressJet
Agreements with other airlines
Number of aircraft under contract	5
United Express Agreements | ERJ 145 | ExpressJet
Agreements with other airlines
Number of aircraft under contract	166
United Express Prorate Agreement | Sky West Airlines Inc
Agreements with other airlines
Notice period for termination of agreement	120 days
United Express Prorate Agreement | CRJ 200 | Sky West Airlines Inc
Agreements with other airlines
Number of aircraft under contract	26
Alaska Capacity Purchase Agreement | Forecast
Agreements with other airlines
Number of aircraft under contract		10
Alaska Capacity Purchase Agreement | CRJ 700 | Sky West Airlines Inc
Agreements with other airlines
Number of aircraft under contract	9
Alaska Capacity Purchase Agreement | E 175 | Sky West Airlines Inc
Agreements with other airlines
Number of aircraft under contract	5
American Capacity Purchase Agreement | CRJ 200 | ExpressJet
Agreements with other airlines
Number of aircraft under contract	11
American Capacity Purchase Agreement | CRJ 200 | Sky West Airlines Inc
Agreements with other airlines
Number of aircraft under contract	12
American Capacity Purchase Agreement | ERJ 145 | ExpressJet
Agreements with other airlines
Number of aircraft under contract	16
American Capacity Prorate Agreement | Sky West Airlines Inc
Agreements with other airlines
Notice period for termination of agreement	120 days
American Capacity Prorate Agreement | CRJ 200 | Sky West Airlines Inc
Agreements with other airlines
Number of aircraft under contract	5
Prorate Agreement | ExpressJet
Agreements with other airlines
Notice period for termination of agreement	120 days
Prorate Agreement | Sky West Airlines Inc
Agreements with other airlines
Number of aircraft under contract	21
Notice period for termination of agreement	30 days
Prorate Agreement | CRJ 200 | ExpressJet
Agreements with other airlines
Number of aircraft under contract	3

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Nature of Operations and Summary of Significant Accounting Policies (Details 9) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015 USD ($) $ / shares shares	Sep. 30, 2015 USD ($) $ / shares shares	Jun. 30, 2015 USD ($) $ / shares shares	Mar. 31, 2015 USD ($) $ / shares shares	Dec. 31, 2014 USD ($) $ / shares shares	Sep. 30, 2014 USD ($) $ / shares shares	Jun. 30, 2014 USD ($) $ / shares shares	Mar. 31, 2014 USD ($) $ / shares shares	Dec. 31, 2015 USD ($) segment $ / shares shares	Dec. 31, 2014 USD ($) $ / shares shares	Dec. 31, 2013 USD ($) $ / shares shares
Net Income (loss) Per Common Share
Number of outstanding options not included in computation of Diluted EPS (in shares) | shares									505,000	3,191,000	3,072,000
Numerator
Net Income (loss)	$ 40,454	$ 36,268	$ 31,475	$ 9,620	$ (27,868)	$ 41,338	$ (14,737)	$ (22,887)	$ 117,817	$ (24,154)	$ 58,956
Denominator
Denominator for basic earnings per-share weighted average shares | shares	50,880,000	50,616,000	51,357,000	51,457,000	51,174,000	51,127,000	51,183,000	51,467,000	51,077,000	51,237,000	51,688,000
Dilution due to stock options and restricted stock (in shares) | shares									748,000		734,000
Denominator for diluted earnings per-share weighted average shares | shares	51,657,000	51,282,000	51,971,000	52,392,000	51,174,000	52,036,000	51,183,000	51,467,000	51,825,000	51,237,000	52,422,000
Basic earnings per share (in dollars per share) | $ / shares	$ 0.80	$ 0.72	$ 0.61	$ 0.19	$ (0.54)	$ 0.81	$ (0.29)	$ (0.44)	$ 2.31	$ (0.47)	$ 1.14
Diluted earnings per share (in dollars per share) | $ / shares	$ 0.78	$ 0.71	$ 0.61	$ 0.18	$ (0.54)	$ 0.79	$ (0.29)	$ (0.44)	$ 2.27	$ (0.47)	$ 1.12
Other Revenue Items
Deemed rental income under code-share agreement									$ 504,900	$ 497,000	$ 500,200
Fair Value of Financial Instruments
Fair value of long-term debt	$ 1,939,800				$ 1,813,100				1,939,800	1,813,100
Carrying amount of long-term debt	1,948,803				$ 1,745,811				$ 1,948,803	$ 1,745,811
Segment Reporting
Operating segments number | segment									3
Recent Accounting Pronouncements
Unamortized debt issuance costs	$ 20,900								$ 20,900
Previously reported
Prior Period Adjustment [Abstract]
Overstatement of prepaid expense									201,500
Understatement of long term prepaid aircraft									$ 201,500

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Segment Reporting (Details) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Sep. 30, 2014 USD ($)	Jun. 30, 2014 USD ($)	Mar. 31, 2014 USD ($)	Dec. 31, 2015 USD ($) segment aircraft	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Segment Reporting
Operating segments number | segment									3
Operating revenues	$ 752,744	$ 794,004	$ 788,417	$ 760,398	$ 813,854	$ 834,633	$ 816,574	$ 772,386	$ 3,095,563	$ 3,237,447	$ 3,297,725
Operating expense									2,861,048	3,212,599	3,144,614
Depreciation and amortization expense									264,507	259,642	245,005
Interest expense									75,850	65,995	68,658
Segment profit (loss)									158,665	(41,147)	84,453
Identifiable intangible assets, other than goodwill	10,499				12,748				10,499	12,748	14,998
Total assets	4,802,886				4,409,928				4,802,886	4,409,928	4,233,219
Capital expenditures (including non - cash)									$ 715,089	696,923	142,044
CRJ 200
Segment Reporting
Number of aircraft lease to third party | aircraft									2
SkyWest Airlines
Segment Reporting
Operating revenues									$ 1,848,363	1,873,675	1,827,568
Operating expense									1,630,200	1,758,145	1,644,129
Depreciation and amortization expense									141,189	162,699	155,667
Interest expense									36,141	39,452	43,920
Segment profit (loss)									182,022	76,078	139,519
Total assets	2,319,295				2,492,828				2,319,295	2,492,828	2,532,431
Capital expenditures (including non - cash)									30,897	137,678	103,387
SkyWest Airlines | E 175 | Restated Adjustment
Segment Reporting
Operating revenues										(15,000)
Depreciation and amortization expense										(8,500)
Interest expense										(5,000)
Segment profit (loss)										(1,600)
Total assets					(527,000)					(527,000)
Capital expenditures (including non - cash)										(535,500)
Express Jet Airlines Inc
Segment Reporting
Operating revenues									1,169,923	1,346,859	1,466,341
Operating expense									1,192,070	1,446,050	1,494,302
Depreciation and amortization expense									86,382	88,459	89,338
Interest expense									12,091	18,754	21,034
Segment profit (loss)									(34,238)	(117,945)	(48,995)
Identifiable intangible assets, other than goodwill	10,499				12,748				10,499	12,748	14,998
Total assets	1,332,995				1,390,129				1,332,995	1,390,129	1,700,788
Capital expenditures (including non - cash)									24,679	23,790	38,657
Other Segments
Segment Reporting
Operating revenues	(7,900)								77,277	16,913	3,816
Operating expense									38,778	8,404	6,183
Depreciation and amortization expense									36,936	8,484
Interest expense									27,618	7,789	3,704
Segment profit (loss)									10,881	720	$ (6,071)
Total assets	$ 1,150,596				526,971				1,150,596	526,971
Capital expenditures (including non - cash)									$ 659,513	535,455
Other Segments | E 175 | Restated Adjustment
Segment Reporting
Operating revenues										15,000
Depreciation and amortization expense										8,500
Interest expense										5,000
Segment profit (loss)										1,600
Total assets					$ 527,000					527,000
Capital expenditures (including non - cash)										$ 535,500

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Long-term Debt (Details)	3 Months Ended	12 Months Ended
	Dec. 31, 2015 USD ($)	Dec. 31, 2015 USD ($) aircraft	Dec. 31, 2014 USD ($)
Long-term Debt
Long-term debt	$ 1,948,803,000	$ 1,948,803,000	$ 1,745,811,000
Less current maturities	(272,027,000)	(272,027,000)	(211,821,000)
Long-term debt, net of current maturities	1,676,776,000	1,676,776,000	1,533,990,000
Aggregate amounts of principal maturities of long-term debt
2016	272,027,000	272,027,000
2017	248,629,000	248,629,000
2018	230,681,000	230,681,000
2019	223,898,000	223,898,000
2020	183,620,000	183,620,000
Thereafter	789,948,000	789,948,000
Long-term debt	1,948,803,000	1,948,803,000	1,745,811,000
Repayment of debt in cash	94,000,000	110,800,000
TotalRepaymentOfDebt	128,000,000	145,400,000
Pre-tax gain	33,000,000	33,660,000
Letters of credit and surety bonds outstanding with various banks and surety institutions	88,900,000	88,900,000	79,900,000
CRJ
Long-term Debt
Long-term debt	$ 1,900,000,000	$ 1,900,000,000
Effective interest rate (as a percent)	3.70%	3.70%
Aggregate amounts of principal maturities of long-term debt
Long-term debt	$ 1,900,000,000	$ 1,900,000,000
E 175
Long-term Debt
Number of new aircraft acquired | aircraft		25
Purchase price portion financed through debt issuance (as a percent)		85.00%
Purchase price portion paid with cash (as a percent)		15.00%
Notes payable to banks, due in semi-annual installments, variable interest based on LIBOR, or with interest rates ranging from 1.29% to 2.22% through 2016 to 2020, secured by aircraft
Long-term Debt
Interest rate, minimum (as a percent)		1.29%
Interest rate, maximum (as a percent)		2.22%
Long-term debt	108,348,000	$ 108,348,000	174,159,000
Aggregate amounts of principal maturities of long-term debt
Long-term debt	108,348,000	$ 108,348,000	174,159,000
Notes payable to a financing company, due in semi-annual installments, variable interest based on LIBOR, or with interest rates ranging from 1.76% to 3.25% through 2017 to 2021, secured by aircraft
Long-term Debt
Interest rate, minimum (as a percent)		1.76%
Interest rate, maximum (as a percent)		3.25%
Long-term debt	217,341,000	$ 217,341,000	350,177,000
Aggregate amounts of principal maturities of long-term debt
Long-term debt	217,341,000	$ 217,341,000	350,177,000
Notes payable to banks, due in semi-annual installments plus interest at 6.06% to 6.51% through 2021, secured by aircraft
Long-term Debt
Interest rate, minimum (as a percent)		6.06%
Interest rate, maximum (as a percent)		6.51%
Long-term debt	108,069,000	$ 108,069,000	129,201,000
Aggregate amounts of principal maturities of long-term debt
Long-term debt	108,069,000	$ 108,069,000	129,201,000
Notes payable to a financing company, due in semi-annual installments plus interest at 5.78% to 6.23% through 2017, secured by aircraft
Long-term Debt
Interest rate, minimum (as a percent)		5.78%
Interest rate, maximum (as a percent)		6.23%
Long-term debt	17,208,000	$ 17,208,000	25,090,000
Aggregate amounts of principal maturities of long-term debt
Long-term debt	17,208,000	$ 17,208,000	25,090,000
Notes payable to banks, due in monthly installments plus interest of 2.68% to 6.86% through 2025, secured by aircraft
Long-term Debt
Interest rate, minimum (as a percent)		2.68%
Interest rate, maximum (as a percent)		6.86%
Long-term debt	479,170,000	$ 479,170,000	572,446,000
Aggregate amounts of principal maturities of long-term debt
Long-term debt	$ 479,170,000	$ 479,170,000	572,446,000
Notes payable to banks, due in monthly installments, plus interest at 6.05% through 2020, secured by aircraft
Long-term Debt
Interest rate (as a percent)	6.05%	6.05%
Long-term debt	$ 11,304,000	$ 11,304,000	13,551,000
Aggregate amounts of principal maturities of long-term debt
Long-term debt	$ 11,304,000	$ 11,304,000	13,551,000
Notes payable to banks, due in monthly installments, plus interest at 3.10% through 2019, secured by aircraft
Long-term Debt
Interest rate (as a percent)	3.10%	3.10%
Long-term debt	$ 4,615,000	$ 4,615,000	5,909,000
Aggregate amounts of principal maturities of long-term debt
Long-term debt	4,615,000	$ 4,615,000	5,909,000
Notes payable to banks, due in quarterly installments plus interest at 3.39% to 4.02% through 2027, secured by aircraft(1)
Long-term Debt
Interest rate, minimum (as a percent)		3.39%
Interest rate, maximum (as a percent)		4.02%
Long-term debt	966,156,000	$ 966,156,000	446,724,000
Aggregate amounts of principal maturities of long-term debt
Long-term debt	966,156,000	$ 966,156,000	446,724,000
Notes payable to banks, due in monthly installments, plus interest based on LIBOR at 3.21% to 3.33% through 2017, secured by aircraft
Long-term Debt
Interest rate, minimum (as a percent)		3.21%
Interest rate, maximum (as a percent)		3.33%
Long-term debt	14,538,000	$ 14,538,000	28,554,000
Aggregate amounts of principal maturities of long-term debt
Long-term debt	14,538,000	$ 14,538,000	28,554,000
Notes payable to banks due in monthly installments, interest based on LIBOR interest at 3.30% through 2019, secured by spare engines
Long-term Debt
Interest rate, minimum (as a percent)		3.30%
Interest rate, maximum (as a percent)		2019.00%
Long-term debt	22,054,000	$ 22,054,000
Aggregate amounts of principal maturities of long-term debt
Long-term debt	$ 22,054,000	$ 22,054,000
Line of Credit | SkyWest Airlines
Long-term Debt
Interest rate (as a percent)	3.00%	3.00%
Aggregate amounts of principal maturities of long-term debt
Maximum borrowing capacity	$ 25,000,000	$ 25,000,000	25,000,000
Amount outstanding	0	0	0
Letters of credit	6,000,000	6,000,000	5,000,000
Line of credit facility, reduction of amount available	$ 19,000,000	$ 19,000,000	$ 20,000,000

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Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current tax provision (benefit):
Federal	$ 3,801	$ (176)	$ 1,767
State	1,035	838	343
Foreign		2,081
Total current payable	4,836	2,743	2,110
Deferred tax provision (benefit):
Federal	66,430	4,697	34,728
State	5,239	371	2,738
Total deferred payable	71,669	5,068	37,466
Provision for income taxes	$ 76,505	$ 7,811	$ 39,576

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Income Taxes (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Taxes
Statutory Federal income tax rate (as a percent)	35.00%
Reconciliation between the statutory Federal income tax rate of 35% and the effective rate which is derived by dividing the provision for income taxes by income (loss) before provision for income taxes
Computed provision (benefit) for income taxes at the statutory rate	$ 68,013	$ (5,720)	$ 34,486
State income tax provision (benefit), net of federal income tax benefit	5,416	(107)	2,867
Non-deductible expenses	3,641	3,865	3,257
Valuation allowance changes affecting the provision for income taxes	(899)	5,981	1,430
Foreign income taxes, net of federal & state benefit		1,973
Other, net	334	1,819	(2,464)
Provision for income taxes	76,505	7,811	$ 39,576
Deferred tax assets:
Intangible Asset	30,369	34,819
Accrued benefits	47,514	43,853
Net operating loss carryforward	82,211	152,361
AMT credit carryforward	21,391	17,590
Deferred aircraft credits	55,544	53,797
Accrued reserves and other	24,575	27,008
Total deferred tax assets	261,604	329,428
Valuation allowance	(8,126)	(9,025)
Deferred tax liabilities:
Accelerated depreciation	(902,322)	(895,405)
Total deferred tax liabilities	(902,322)	(895,405)
Net deferred tax liability	$ 648,844	$ 575,002

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Income Taxes (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Net operating losses
State income tax rate (as a percent)	2.60%
Statutory Federal income tax rate (as a percent)	35.00%
Alternative minimum tax credit without expiration	$ 21,391	$ 17,590
Valuation allowance on acquired non-amortizable intangible tax assets and other tax assets	8,126	9,025
Domestic Tax Authority
Net operating losses
Operating loss carryforward	189,000	379,300
State
Net operating losses
Operating loss carryforward	$ 352,200	$ 452,200

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Commitments and Contingencies (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($) aircraft	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Commitments and Contingencies
Number of aircraft leased by the entity | aircraft	470
Future minimum rental payments required under operating leases
2016	$ 269,520
2017	192,122
2018	154,077
2019	121,107
2020	133,659
Thereafter	349,038
Total future lease obligations	1,219,523
Rental expense for non-cancelable aircraft operating leases	273,696	$ 305,334	$ 325,360
Minimum rental expense for airport station rents	$ 35,100	$ 29,000	$ 35,100
Leveraged lease agreements term, maximum	11 years
Sale lease-back agreement, sales price of the facility	$ 18,500

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Commitments and Contingencies (Details 2)	12 Months Ended
	Dec. 31, 2015 USD ($) employee	Dec. 31, 2014 USD ($)	Dec. 31, 2013
Concentration Risk and Significant Customers
Allowance for doubtful accounts | $	$ 187,300	$ 326,600
Number of full-time equivalent employees	18,300
Revenue from Rights Concentration Risk | Customer Concentration Risk | Delta, United, and Continental Combined
Concentration Risk and Significant Customers
Concentration risk (as a percent)	86.90%	88.70%	91.60%
Workforce Subject to Collective Bargaining Arrangements | Labor Force Concentration Risk
Concentration Risk and Significant Customers
Concentration risk (as a percent)	38.00%
Workforce Subject to Collective Bargaining Arrangements | Labor Force Concentration Risk | Atlantic Southeast Pilots
Concentration Risk and Significant Customers
Approximate Number of Active Employees	1,491
Workforce Subject to Collective Bargaining Arrangements | Labor Force Concentration Risk | Atlantic Southeast Flight Attendants
Concentration Risk and Significant Customers
Approximate Number of Active Employees	1,031
Workforce Subject to Collective Bargaining Arrangements | Labor Force Concentration Risk | Atlantic Southeast Flight Controllers
Concentration Risk and Significant Customers
Approximate Number of Active Employees	36
Workforce Subject to Collective Bargaining Arrangements | Labor Force Concentration Risk | Atlantic Southeast Mechanics
Concentration Risk and Significant Customers
Approximate Number of Active Employees	364
Workforce Subject to Collective Bargaining Arrangements | Labor Force Concentration Risk | Atlantic Southeast Stock Clerks
Concentration Risk and Significant Customers
Approximate Number of Active Employees	73
Workforce Subject to Collective Bargaining Arrangements | Labor Force Concentration Risk | ExpressJet Delaware Pilots
Concentration Risk and Significant Customers
Approximate Number of Active Employees	2,107
Workforce Subject to Collective Bargaining Arrangements | Labor Force Concentration Risk | ExpressJet Delaware Flight Attendants
Concentration Risk and Significant Customers
Approximate Number of Active Employees	993
Workforce Subject to Collective Bargaining Arrangements | Labor Force Concentration Risk | ExpressJet Delaware Mechanics
Concentration Risk and Significant Customers
Approximate Number of Active Employees	711
Workforce Subject to Collective Bargaining Arrangements | Labor Force Concentration Risk | ExpressJet Delaware Dispatchers
Concentration Risk and Significant Customers
Approximate Number of Active Employees	53
Workforce Subject to Collective Bargaining Arrangements | Labor Force Concentration Risk | ExpressJet Delaware Stock Clerks
Concentration Risk and Significant Customers
Approximate Number of Active Employees	96

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Fair Value Measurements (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Fair Value Measurements
Marketable securities	$ 286,668	$ 415,273
Fair Value of Financial Instruments
Fair value of long-term debt	1,939,800	1,813,100
Carrying amount of long-term debt	1,948,803	1,745,811
Auction Rate Securities
Changes in assets measured at fair value on a recurring basis using significant unobservable inputs (level 3)
Balance at the beginning of the period	2,309
Total realized and unrealized gains or (losses) Included in other comprehensive income	12
Balance at the end of the period	2,321
Recurring | Fair value
Fair Value Measurements
Marketable securities	286,668
Cash, Cash Equivalents and Restricted Cash	211,251	143,857
Other Assets	2,321	2,309
Total Assets Measured at Fair Value	500,240	561,439
Recurring | Bonds and bond funds | Fair value
Fair Value Measurements
Marketable securities	286,637	410,163
Recurring | Asset-backed Securities | Fair value
Fair Value Measurements
Marketable securities	31	415,273
Recurring | Commercial Paper | Fair value
Fair Value Measurements
Marketable securities		5,110
Recurring | Level 1
Fair Value Measurements
Cash, Cash Equivalents and Restricted Cash	211,251	143,857
Total Assets Measured at Fair Value	211,251	143,857
Recurring | Level 2
Fair Value Measurements
Marketable securities	286,668
Total Assets Measured at Fair Value	286,668	415,273
Recurring | Level 2 | Bonds and bond funds
Fair Value Measurements
Marketable securities	286,637	410,163
Recurring | Level 2 | Asset-backed Securities
Fair Value Measurements
Marketable securities	31	415,273
Recurring | Level 2 | Commercial Paper
Fair Value Measurements
Marketable securities		5,110
Recurring | Level 3
Fair Value Measurements
Other Assets	2,321	2,309
Total Assets Measured at Fair Value	$ 2,321	$ 2,309

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Investment in Other Companies (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Trip Linhas Aereas [Member]
Investments in other companies
Company's investment balance	$ 42.0
Gain (loss) on equity method investments	$ 24.9
Trip Linhas Aereas [Member] | Common Stock [Member]
Investments in other companies
Annual rate of return used to calculate the put option price (as a percent)	20.00%
Mekong Aviation Joint Stock Company [Member]
Investments in other companies
Percentage ownership acquired		30.00%
Gain on sale of cost method investment		$ 5.0
Other income recognized on termination of sub-lease with Air Mekong		$ 5.1

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Special Items (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Total Special items		$ 74,777
Aircraft rentals	$ 273,696	305,334	$ 325,360
Paint facility
Total Special items		4,800
EMB 120
Total Special items		57,046
Estimated fair value		48,300
Aircraft rentals		8,800
ERJ 145
Total Special items		12,931
Estimated fair value		11,400
Aircraft rentals		$ 1,500

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Capital Transactions (Details) - shares	Dec. 31, 2015	Dec. 31, 2014
Preferred Stock
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock outstanding (in shares)	0

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Capital Transactions (Details 2)		12 Months Ended
	May. 04, 2010 shares	Dec. 31, 2015 USD ($) $ / shares shares	Dec. 31, 2014 USD ($) $ / shares shares	Dec. 31, 2013 USD ($) $ / shares shares	Dec. 31, 2015 USD ($) plan $ / shares shares	Dec. 31, 2014 $ / shares shares
Stock Compensation
Additional shares of common stock available for issuance					0
Compensation expenses
Stock based compensation expense | $		$ 5,368,000	$ 5,318,000	$ 4,363,000
Maximum
Assumptions used to determine value of the shares purchased under the stock purchase plan using Black-Scholes option pricing model
Award percentage		150.00%
Minimum
Assumptions used to determine value of the shares purchased under the stock purchase plan using Black-Scholes option pricing model
Award percentage		0.00%
Stock Options and Restricted Stock
Compensation expenses
Total unrecognized compensation cost | $					$ 8,700,000
Unrecognized compensation cost recognized over a weighted average period (in years)		2 years
Employee Stock Option
Stock Compensation
Options outstanding (in shares)		2,888,074	3,407,575	3,653,859	1,064,429	2,888,074
Assumptions used to determine value of the shares purchased under the stock purchase plan using Black-Scholes option pricing model
Expected annual dividend rate (as a percent)		1.18%	1.32%	1.21%
Risk-free interest rate (as a percent)		1.62%	1.50%	0.92%
Average expected life (years)		5 years 8 months 12 days	5 years 9 months 18 days	6 years
Expected volatility of common stock (as a percent)		0.401%	0.431%	0.446%
Forfeiture rate (as a percent)		0.00%	0.00%	0.00%
Weighted average fair value of option grants | $ / shares		$ 4.75	$ 4.47	$ 5.04
Weighted Average Grant-Date Fair Value
Granted (in dollars per share) | $ / shares		$ 4.92
Compensation expenses
Period from grant date after which stock options become exercisable, minimum (in months)		6 months
Period from grant date within which incentive stock options are exercisable, maximum (in years)		7 years
Number of Options
Outstanding at the beginning of the period (in shares)		2,888,074	3,407,575	3,653,859
Granted (in shares)		267,433	255,503	173,560
Exercised (in shares)		(544,917)	(6,701)	(75,080)
Cancelled (in shares)		(1,546,161)	(768,303)	(344,764)
Outstanding at the end of the period (in shares)		1,064,429	2,888,074	3,407,575
Exercisable (in shares)					484,747	2,324,336
Weighted Average Exercise Price
Outstanding at the beginning of the period (in dollars per share) | $ / shares		$ 16.46	$ 17.99	$ 18.44
Granted (in dollars per share) | $ / shares		13.63	11.96	13.24
Exercised (in dollars per share) | $ / shares		14.68	12.10	10.91
Cancelled (in dollars per share) | $ / shares		18.53	6.81	20.67
Outstanding at the end of the period (in dollars per share) | $ / shares		$ 13.64	$ 16.46	$ 17.99
Exercisable (in dollars per share) | $ / shares					$ 14.46	$ 17.39
Weighted Average Remaining Contractual Term
Outstanding, Weighted Average Remaining Contractual Term (in years)		3 years 8 months 12 days	1 year 8 months 12 days
Exercisable, Weighted Average Remaining Contractual Term (in years)		1 year 8 months 12 days	9 months 18 days
Aggregate Intrinsic Value
Average intrinsic value of shares outstanding | $					$ 5,726,700
Average intrinsic value of shares exercisable | $					$ 2,212,500
Total intrinsic value of options exercised | $		$ 1,800,000	$ 30,000	$ 172,000
Non-vested stock options
Non-vested shares at beginning of year (in shares)		563,738
Granted (in shares)		267,433	255,503	173,560
Vested (in shares)		(187,403)
Cancelled (in shares)		(64,086)
Non-vested shares at end of year (in shares)		579,682	563,738
Weighted Average Grant-Date Fair Value
Non-vested shares at beginning of year (in dollars per share) | $ / shares		$ 4.56
Weighted average fair value of option grants | $ / shares		4.75	$ 4.47	$ 5.04
Vested (in dollars per share) | $ / shares		4.43
Cancelled (in dollars per share) | $ / shares		4.65
Non-vested shares at end of year (in dollars per share) | $ / shares		$ 4.75	$ 4.56
Restricted Stock
Assumptions used to determine value of the shares purchased under the stock purchase plan using Black-Scholes option pricing model
Granted (in shares)		408,163	312,749	282,651
Number of shares
Nonvested shares at the beginning of the period (in shares)		723,176	733,591	698,885
Granted (in shares)		408,163	312,749	282,651
Vested (in shares)		(215,856)	(284,891)	(202,012)
Cancelled (in shares)		(106,184)	(38,273)	(45,933)
Nonvested shares at the end of the period (in shares)		809,299	723,176	733,591
Weighted Average Grant-Date Fair Value
Nonvested shares at the beginning of the period (in dollars per share) | $ / shares		$ 12.70	$ 13.79	$ 14.21
Granted (in dollars per share) | $ / shares		13.57	12.00	13.43
Vested (in dollars per share) | $ / shares		13.06	14.74	14.51
Cancelled (in dollars per share) | $ / shares		13.52	12.83	13.69
Nonvested shares at the end of the period (in dollars per share) | $ / shares		$ 13.13	$ 12.70	$ 13.79
Restricted Stock | Director
Assumptions used to determine value of the shares purchased under the stock purchase plan using Black-Scholes option pricing model
Granted (in shares)		36,950	44,631	29,453
Number of shares
Granted (in shares)		36,950	44,631	29,453
Weighted Average Grant-Date Fair Value
Granted (in dollars per share) | $ / shares		$ 14.05	$ 12.10	$ 13.24
Performance Share Units
Assumptions used to determine value of the shares purchased under the stock purchase plan using Black-Scholes option pricing model
Granted (in shares)		222,583
Number of shares
Granted (in shares)		222,583
Cancelled (in shares)		(19,754)
Nonvested shares at the end of the period (in shares)		202,829
Weighted Average Grant-Date Fair Value
Granted (in dollars per share) | $ / shares		$ 13.61
Cancelled (in dollars per share) | $ / shares		13.51
Nonvested shares at the end of the period (in dollars per share) | $ / shares		$ 13.62
Group of Plans
Stock Compensation
Number of stock option plans | plan					3
Group of Plans | Employee Stock Option
Stock Compensation
Options outstanding (in shares)		76,923			76,923
Number of Options
Outstanding at the end of the period (in shares)		76,923
Long Term Incentive Plan 2010
Stock Compensation
Number of shares authorized	5,150,000
Long Term Incentive Plan 2010 | Employee Stock Option
Stock Compensation
Minimum incentive stock option exercise price, expressed as a percentage of common stock grant date market value	100.00%
Number of Options
Granted (in shares)		267,433	255,503	173,560
Non-vested stock options
Granted (in shares)		267,433	255,503	173,560
Long Term Incentive Plan 2010 | Restricted Stock
Assumptions used to determine value of the shares purchased under the stock purchase plan using Black-Scholes option pricing model
Granted (in shares)		408,163
Vesting period		3 years
Number of shares
Granted (in shares)		408,163
Weighted Average Grant-Date Fair Value
Granted (in dollars per share) | $ / shares		$ 13.57

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Capital Transactions (Details 3)	12 Months Ended
	Dec. 31, 2015 $ / shares shares
$8 to $11
Stock options, exercise price
Exercise price range, low end of range (in dollars per share)	$ 8
Exercise price range, high end of range (in dollars per share)	$ 11
Options Outstanding
Number of options outstanding (in shares) | shares	19,458
Options outstanding, Weighted Average Remaining Contractual Life	5 years 4 months 24 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 11.10
$12 to $14
Stock options, exercise price
Exercise price range, low end of range (in dollars per share)	12
Exercise price range, high end of range (in dollars per share)	$ 14
Options Outstanding
Number of options outstanding (in shares) | shares	859,595
Options outstanding, Weighted Average Remaining Contractual Life	4 years 1 month 6 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 13.31
Options Exercisable
Number of options Exercisable (in shares) | shares	305,331
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 13.90
$15 to $18
Stock options, exercise price
Exercise price range, low end of range (in dollars per share)	15
Exercise price range, high end of range (in dollars per share)	$ 18
Options Outstanding
Number of options outstanding (in shares) | shares	185,376
Options outstanding, Weighted Average Remaining Contractual Life	1 year 4 months 24 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 15.43
Options Exercisable
Number of options Exercisable (in shares) | shares	179,416
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 15.64
$8 to $18
Stock options, exercise price
Exercise price range, low end of range (in dollars per share)	8
Exercise price range, high end of range (in dollars per share)	$ 18
Options Outstanding
Number of options outstanding (in shares) | shares	1,064,429
Options outstanding, Weighted Average Remaining Contractual Life	3 years 8 months 12 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 13.64
Options Exercisable
Number of options Exercisable (in shares) | shares	484,747
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 14.46

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Retirement Plans and Employee Stock Purchase Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
SkyWest Plan
Retirement Plans
Service period required to be completed to be eligible to participate in plan	90 days
Required age for an employee to be eligible to participate in plan	18 years
Percentage of employer matching contribution based on length of service	100.00%
Company's combined contributions	$ 20.4	$ 19.3	$ 18.3
SkyWest Plan | Pilot employees
Retirement Plans
Percentage of participant's compensation eligible for employer's matching contribution based upon length of service, threshold one	2.00%
Percentage of participant's compensation eligible for employer's matching contribution based upon length of service, threshold two	4.00%
Percentage of participant compensation eligible for employer's matching contribution based upon length of service, threshold three	6.00%
SkyWest Plan | Non-pilot employees
Retirement Plans
Percentage of participant's compensation eligible for employer's matching contribution based upon length of service, threshold one	3.00%
Percentage of participant's compensation eligible for employer's matching contribution based upon length of service, threshold two	5.00%
Percentage of participant compensation eligible for employer's matching contribution based upon length of service, threshold three	7.00%
Atlantic Southeast and the ExpressJet Plans
Retirement Plans
Service period required to be completed to be eligible to participate in plan	90 days
Required age for an employee to be eligible to participate in plan	18 years
Company's combined contributions	$ 24.0	$ 27.2	$ 26.7
Atlantic Southeast Plan
Retirement Plans
Maximum percentage of participant's total compensation eligible for employer matching contribution	6.00%
Minimum service period required to be completed for eight percent matching contribution by the employer	10 years
Maximum percentage of participant's total compensation eligible for employer matching contribution after requisite service period	8.00%
Percentage of vesting for plan participants' elective deferrals and rollover amounts	100.00%
Atlantic Southeast Plan | Minimum
Retirement Plans
Percentage of employer matching contribution based on length of service	20.00%
Percentage of vesting of company matching contribution based on length of service	10.00%
Atlantic Southeast Plan | Maximum
Retirement Plans
Percentage of employer matching contribution based on length of service	75.00%
Percentage of vesting of company matching contribution based on length of service	100.00%

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Retirement Plans and Employee Stock Purchase Plans (Details 2) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Retirement Plans and Employee Stock Purchase Plans
Service period required to be completed for an employee to be eligible to participate in plan, minimum	90 days
Ownership interest in Company common stock to disqualify employee from participation in plan, maximum (as a percent)	5.00%
Maximum percentage of base salary which can be contributed by the employees	15.00%
Maximum amount of base salary which can be contributed annually by the employees	$ 25,000
Discount rate at which common stock can be purchased by the plan participant (as a percent)	5.00%
Summary of purchases made under the 2010 and 1995 Employee Stock Purchase Plans
Number of shares purchased	254,098	295,035	299,786
Average price of shares purchased (in dollars per share)	$ 13.50	$ 12.72	$ 12.33

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Stock Repurchase (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Stock Repurchase
Common stock repurchased (in shares)	1.3	0.7	0.8
Common stock repurchased, value	$ 18.7	$ 8.4	$ 11.7
Weighted average price per share of common stock (in dollars per share)	$ 14.98	$ 12.54	$ 14.40

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Related-Party Transactions (Details)	12 Months Ended
	Dec. 31, 2015 USD ($) aircraft	Dec. 31, 2012 aircraft	Dec. 31, 2014 USD ($)
Zions Bancorporation
Related Party Transactions
Cash balance with related party | $	$ 65,000,000		$ 90,600,000
Zions Bancorporation | Minimum
Related Party Transactions
Refinancing term		3 years
Zions Bancorporation | Maximum
Related Party Transactions
Refinancing term		4 years
Zions Bancorporation | CRJ 200
Related Party Transactions
Equity participation in leveraged leases on number of aircraft	1
Number of refinanced aircraft		5
Zions Bancorporation | CRJ 700
Related Party Transactions
Equity participation in leveraged leases on number of aircraft	2
Number of refinanced aircraft		2
Zions Bancorporation | Brasilia turboprop aircraft
Related Party Transactions
Equity participation in leveraged leases on number of aircraft	4
Affiliated Entity [Member] | ERJ 145
Related Party Transactions
Purchase from related party | $	$ 363,910

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Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Quarterly Financial Data (Unaudited)
Operating revenues	$ 752,744	$ 794,004	$ 788,417	$ 760,398	$ 813,854	$ 834,633	$ 816,574	$ 772,386	$ 3,095,563	$ 3,237,447	$ 3,297,725
Operating income	52,212	78,296	69,932	34,075	(19,702)	59,080	13,244	(27,774)	234,515	24,848	153,111
Net Income (loss)	$ 40,454	$ 36,268	$ 31,475	$ 9,620	$ (27,868)	$ 41,338	$ (14,737)	$ (22,887)	$ 117,817	$ (24,154)	$ 58,956
Net income (loss) per common share:
Basic (in dollars per share)	$ 0.80	$ 0.72	$ 0.61	$ 0.19	$ (0.54)	$ 0.81	$ (0.29)	$ (0.44)	$ 2.31	$ (0.47)	$ 1.14
Diluted (in dollars per share)	$ 0.78	$ 0.71	$ 0.61	$ 0.18	$ (0.54)	$ 0.79	$ (0.29)	$ (0.44)	$ 2.27	$ (0.47)	$ 1.12
Weighted average common shares:
Basic (in shares)	50,880	50,616	51,357	51,457	51,174	51,127	51,183	51,467	51,077	51,237	51,688
Diluted (in shares)	51,657	51,282	51,971	52,392	51,174	52,036	51,183	51,467	51,825	51,237	52,422

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SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
VALUATION AND QUALIFYING ACCOUNTS
Balance at Beginning of Year	$ 11,914	$ 10,232	$ 9,283
Additions Charged to Costs and Expenses	2,345	1,682	949
Deductions	(139)
Balance at End of Year	14,120	11,914	10,232
Allowance for inventory obsolescence
VALUATION AND QUALIFYING ACCOUNTS
Balance at Beginning of Year	11,588	10,138	9,189
Additions Charged to Costs and Expenses	2,345	1,450	949
Balance at End of Year	13,933	11,588	10,138
Allowance for doubtful accounts receivable
VALUATION AND QUALIFYING ACCOUNTS
Balance at Beginning of Year	326	94	94
Additions Charged to Costs and Expenses		232
Deductions	(139)
Balance at End of Year	$ 187	$ 326	$ 94