10-Q

prorate

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-Q

☒ QUARTERLY REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2019

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 number 0-14719

SKYWEST, INC.

Incorporated under the laws of Utah	87-0292166
	(I.R.S. Employer ID No.)

444 South River Road

St. George, Utah 84790

(435) 634-3000

(Address of principal executive offices and telephone number)

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 for 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 every Interactive Data File required to be submitted 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 such files).  Yes ☒  No ☐

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

Large accelerated filer ☒	Accelerated filer ☐
Non-accelerated filer ☐	Smaller reporting company ☐
Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

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

Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class	Trading Symbol(s)	Name of Each Exchange on which Registered
Common Stock, No Par Value	SKYW	The Nasdaq Global Select Market

Indicate the number of shares outstanding of each of the registrant’s classes of common stock, as of the latest practicable date.

Class	Outstanding at April 30, 2019
Common stock, no par value	51,233,435

SKYWEST, INC.

QUARTERLY REPORT ON FORM 10-Q

TABLE OF CONTENTS

PART I	FINANCIAL INFORMATION
	Item 1.	Financial Statements	3
		Consolidated Balance Sheets as of March 31, 2019 (unaudited) and December 31, 2018	3
		Consolidated Statements of Comprehensive Income (unaudited) for the three months ended March 31, 2019 and 2018	5
		Consolidated Statements of Stockholders Equity (unaudited) for the three months ended March 31, 2019 and 2018	6
		Condensed Consolidated Statements of Cash Flows (unaudited) for the three months ended March 31, 2019 and 2018	7
		Notes to Condensed Consolidated Financial Statements	8
	Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	19
	Item 3.	Quantitative and Qualitative Disclosures About Market Risk	29
	Item 4.	Controls and Procedures	30
PART II	OTHER INFORMATION
	Item 1.	Legal Proceedings	30
	Item 1A.	Risk Factors	30
	Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	31
	Item 6.	Exhibits	31
		Signature	32
Exhibit 31.1	Certification of Chief Executive Officer
Exhibit 31.2	Certification of Chief Financial Officer
Exhibit 32.1	Certification of Chief Executive Officer
Exhibit 32.2	Certification of Chief Financial Officer

2

PART I. FINANCIAL INFORMATION

Item 1. Financial Statements

SKYWEST, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

(Dollars in Thousands)

ASSETS

	March 31,		December 31,
	2019		2018
	(unaudited)
CURRENT ASSETS:
Cash and cash equivalents	$	290,885	$	328,384
Marketable securities		253,397		360,945
Income tax receivable		21,255		25,936
Receivables, net		78,370		64,194
Inventories, net		112,566		127,690
Prepaid aircraft rents		—		87,031
Other current assets		24,921		26,614
Total current assets		781,394		1,020,794
PROPERTY AND EQUIPMENT:
Aircraft and rotable spares		6,696,982		6,433,916
Deposits on aircraft		37,602		42,012
Buildings and ground equipment		270,665		291,544
		7,005,249		6,767,472
Less-accumulated depreciation and amortization		(1,730,681)		(1,761,728)
Total property and equipment, net		5,274,568		5,005,744
OTHER ASSETS:
Operating lease right-of-use assets		341,898		—
Long-term prepaid assets		—		181,830
Other assets		146,672		104,844
Total other assets		488,570		286,674
Total assets	$	6,544,532	$	6,313,212

See accompanying notes to condensed consolidated financial statements.

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SKYWEST, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

(Dollars in Thousands)

LIABILITIES AND STOCKHOLDERS’ EQUITY

	March 31,		December 31,
	2019		2018
	(unaudited)
CURRENT LIABILITIES:
Current maturities of long-term debt	$	362,797	$	350,206
Accounts payable		340,195		331,982
Accrued salaries, wages and benefits		118,074		161,606
Taxes other than income taxes		13,901		16,024
Current maturities of operating lease liabilities		73,524		—
Other current liabilities		36,836		65,008
Total current liabilities		945,327		924,826
LONG-TERM DEBT, net of current maturities		2,734,317		2,809,768
DEFERRED INCOME TAXES PAYABLE		541,196		518,159
DEFERRED AIRCRAFT CREDITS		—		29,308
NONCURRENT OPERATING LEASES		275,088		—
OTHER LONG-TERM LIABILITIES		48,037		66,870
COMMITMENTS AND CONTINGENCIES (Note 6)
STOCKHOLDERS’ EQUITY:
Preferred stock, 5,000,000 shares authorized; none issued		—		—
Common stock, no par value, 120,000,000 shares authorized; 81,798,773 and 81,239,289 shares issued, respectively		692,593		690,910
Retained earnings		1,845,467		1,776,585
Treasury stock, at cost, 30,500,393 and 29,850,999 shares, respectively		(537,493)		(503,182)
Accumulated other comprehensive loss		—		(32)
Total stockholders’ equity		2,000,567		1,964,281
Total liabilities and stockholders’ equity	$	6,544,532	$	6,313,212

See accompanying notes to condensed consolidated financial statements.

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SKYWEST, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(Dollars and Shares in Thousands, Except per Share Amounts)

(Unaudited)

	Three months ended
	March 31,
	2019		2018
OPERATING REVENUES:
Flying agreements	$	700,001	$	767,964
Airport customer service and other		23,693		15,436
Total operating revenues		723,694		783,400
OPERATING EXPENSES:
Salaries, wages and benefits		257,588		306,719
Aircraft maintenance, materials and repairs		118,262		141,606
Depreciation and amortization		89,986		77,585
Airport-related expenses		30,647		29,307
Aircraft fuel		25,656		26,939
Aircraft rentals		20,158		44,680
Special items		21,869		—
Other operating expenses		63,109		68,389
Total operating expenses		627,275		695,225
OPERATING INCOME		96,419		88,175
OTHER INCOME (EXPENSE):
Interest income		3,807		1,705
Interest expense		(32,507)		(26,234)
Other income (expense), net		46,725		3,558
Total other expense, net		18,025		(20,971)
INCOME BEFORE INCOME TAXES		114,444		67,204
PROVISION FOR INCOME TAXES		26,263		12,842
NET INCOME	$	88,181	$	54,362
BASIC EARNINGS PER SHARE	$	1.71	$	1.05
DILUTED EARNINGS PER SHARE	$	1.69	$	1.03
Weighted average common shares:
Basic		51,440		51,921
Diluted		52,098		53,033
COMPREHENSIVE INCOME:
Net income	$	88,181	$	54,362
Net unrealized appreciation (depreciation) on debt securities, net of taxes		32		(50)
TOTAL COMPREHENSIVE INCOME	$	88,213	$	54,312

See accompanying notes to condensed consolidated financial statements

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SKYWEST, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF STOCKHOLDERS EQUITY

(UNAUDITED)

(In Thousands)

									Accumulated
									Other
	Common Stock			Retained		Treasury Stock			Comprehensive
	Shares	Amount		Earnings		Shares	Amount		Income (Loss)		Total
Balance at December 31, 2018	81,239	$	690,910	$	1,776,585	(29,851)	$	(503,182)	$	(32)	$	1,964,281
Change in accounting principle and other (see Note 6)	—				(13,141)	—		—		—		(13,141)
Balance at December 31, 2018, as adjusted	81,239		690,910		1,763,444	(29,851)		(503,182)		(32)		1,951,140
Net income	—		—		88,181	—		—		—		88,181
Net unrealized depreciation on marketable securities, net of tax of $10	—		—		—	—		—		32		32
Exercise of common stock options and stock issued under equity award plan	521		641		—	—		—		—		641
Sale of common stock under employee stock purchase plan	39		1,620		—	—		—		—		1,620
Stock-based compensation expense (forfeiture credit) associated with equity awards, net	—		(578)		—	—		—		—		(578)
Treasury shares acquired from vested employee stock awards for income tax withholdings	—		—		—	(173)		(9,311)		—		(9,311)
Treasury stock purchases	—		—		—	(476)		(25,000)		—		(25,000)
Cash dividends declared ($0.12 per share)	—		—		(6,158)	—		—		—		(6,158)
Balance at March 31, 2019	81,799	$	692,593	$	1,845,467	(30,500)	$	(537,493)	$	—	$	2,000,567
Balance at December 31, 2017	80,398	$	672,593	$	1,516,957	(28,644)	$	(435,178)	$	(50)	$	1,754,322
Net income	—		—		54,362	—		—		—		54,362
Net unrealized depreciation on marketable securities, net of tax of $16	—		—		—	—		—		(50)		(50)
Exercise of common stock options and stock issued under equity award plan	677		836		—	—		—		—		836
Sale of common stock under employee stock purchase plan	30		1,485		—	—		—		—		1,485
Stock based compensation expense associated with equity awards	—		4,854		—	—		—		—		4,854
Treasury shares acquired from vested employee stock awards for income tax withholdings	—		—		—	(238)		(10,003)		—		(10,003)
Treasury stock purchases	—		—		—	(177)		(13,464)		—		(13,464)
Cash dividends declared ($0.10 per share)	—		—		(5,205)	—		—		—		(5,205)
Balance at March 31, 2018	81,105	$	679,768	$	1,566,114	(29,059)	$	(458,645)	$	(100)	$	1,787,137

See accompanying notes to condensed consolidated financial statements.

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SKYWEST, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(UNAUDITED)

(In Thousands)

	Three months ended
	March 31,
	2019		2018
NET CASH PROVIDED BY OPERATING ACTIVITIES	$	154,914	$	165,895
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of marketable securities		(498,113)		(387,572)
Sales of marketable securities		605,693		496,945
Proceeds from the sale of aircraft, property and equipment		43		—
Acquisition of property and equipment:
Aircraft and rotable spare parts		(197,341)		(198,777)
Buildings and ground equipment		(52,075)		(9,305)
Aircraft deposits applied towards acquired aircraft		4,660		—
Net cash received from sale of ExpressJet subsidiary		53,200		—
Decrease (increase) in other assets		7,028		(1,364)
NET CASH USED IN INVESTING ACTIVITIES		(76,905)		(100,073)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of long-term debt		19,940		101,317
Principal payments on long-term debt		(98,204)		(71,587)
Net proceeds from issuance of common stock		2,261		2,320
Purchase of treasury stock and employee income tax paid on equity awards		(34,311)		(23,467)
Increase in debt issuance cost		(53)		(610)
Payment of cash dividends		(5,141)		(4,140)
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES		(115,508)		3,833
Increase (decrease) in cash and cash equivalents		(37,499)		69,655
Cash and cash equivalents at beginning of period		328,384		181,792
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$	290,885	$	251,447
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Non-cash investing activities:
Acquisition of rotable spare parts	$	—	$	574
Debt assumed on aircraft acquired under operating leases	$	14,475	$	59,132
Right of use assets applied to aircraft acquired under operating leases	$	150,688	$	—
Lease liability arising from the recognition of right-of-use asset	$	456,472	$	—
Cash paid during the period for:
Interest, net of capitalized amounts	$	34,288	$	26,481
Income taxes	$	1,653	$	486
DETAILS OF SALES OF SUBSIDIARIES:
Decrease in carrying amount of assets	$	(101,448)	$	—
Decrease in carrying amount of liabilities		68,341		—
Transaction costs		—		—
Cash received from buyers		79,632		—
Gain on sale of subsidiaries	$	46,525	$	—

See accompanying notes to condensed consolidated financial statements.

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SKYWEST, INC. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

Note 1 — Condensed Consolidated Financial Statements

Basis of Presentation

The condensed consolidated financial statements of SkyWest, Inc. (“SkyWest” or the “Company”) and its operating subsidiary SkyWest Airlines, Inc. (“SkyWest Airlines”) and its leasing subsidiary SkyWest Leasing, Inc. (“SkyWest Leasing”) included herein have been prepared, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). On January 22, 2019, the Company completed the sale of its former wholly-owned subsidiary, ExpressJet Airlines, Inc. (“ExpressJet”).  The Company’s financial and operating results presented in this Report include the financial results of ExpressJet for the period of time ExpressJet was operating as a subsidiary of the Company.  Certain information and disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) have been condensed or omitted pursuant to such rules and regulations, although the Company believes that the following disclosures are adequate to make the information presented not misleading. These condensed consolidated financial statements reflect all adjustments that, in the opinion of management, are necessary to present fairly the results of operations for the interim periods presented. All adjustments are of a normal recurring nature, unless otherwise disclosed. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and the notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2018.  The results of operations for the three months ended March 31, 2019 are not necessarily indicative of the results that may be expected for the year ending December 31, 2019.

The preparation of financial statements in conformity with GAAP 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 will likely differ, and may differ materially, from those estimates and assumptions.

Recent Accounting Pronouncements

Recently Adopted Standards

In February 2016, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update 2016-02, “Leases (Topic 842)” (“Topic 842”). Topic 842 and subsequently issued amendments require certain leases with durations longer than 12 months to be recognized on the balance sheet. The Company adopted Topic 842 effective January 1, 2019 and elected the package of transition practical expedients for expired or existing contracts, which does not require reassessment of: (1) whether any of the Company’s contracts are or contain leases, (2) lease classification and (3) initial direct costs.  In July 2018, the FASB issued ASU No. 2018-11, "Targeted Improvements - Leases (Topic 842)." This update provides an optional transition method that allows entities to elect to apply the standard using the modified retrospective approach at its effective date, versus recasting the prior years presented. If this adoption method is elected, an entity would recognize a cumulative-effect adjustment to the opening balance of retained earnings in the year of adoption. The Company elected this adoption method and recognized a cumulative-effect adjustment to the opening balance of retained earnings on January 1, 2019.  

Additionally, the Company’s adoption of Topic 842 did not have a significant impact on the recognition, measurement or presentation of lease revenue and lease expenses within the condensed consolidated statements of operations and comprehensive income or the condensed consolidated statements of cash flows. The Company’s adoption of Topic 842 did not have a material impact on the timing or amount of the Company’s lease revenue as a lessor.  The Company’s prepaid aircraft rents, accrued aircraft rents and deferred rent credits that were separately stated in the Company’s December 31, 2018 balance sheet have been classified as a component of the Company’s right-of-use assets effective January 1, 2019. The consolidated financial statements for the three months ended March 31, 2019 are

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presented under the new standard, while comparative years presented are not adjusted and continue to be reported in accordance with the Company’s historical accounting policy.

See Note 6, "Leases, Commitments and Contingencies," for more information.

Note 2 — Flying Agreements Revenue and Airport Customer Service and Other Revenues

The Company recognizes flying agreements revenue and airport customer service and other revenues when the service is provided under its code-share agreements. Under the Company’s fixed-fee arrangements (referred to as “fixed-fee arrangements,” “fixed-fee contracts” or “capacity purchase agreements”) with Delta Air Lines, Inc. (“Delta”), United Airlines, Inc. (“United”), American Airlines, Inc. (“American”) and Alaska Airlines, Inc. (“Alaska”) (each, a “major airline partner”), the major airline partner generally pays the Company a fixed-fee for each departure, flight hour (measured from takeoff to landing, excluding taxi time) or block hour (measured from takeoff to landing, including taxi time) incurred, and an amount per aircraft in service each month with additional incentives based on flight completion 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 airport landing fees and airport rents. Under the fixed-fee arrangements, the Company’s performance obligation is met when each flight is completed and is reflected in flying agreements revenue. The transaction price for the fixed-fee agreements is determined from the fixed-fee consideration, incentive consideration and directly reimbursed expenses earned as flights are completed over the agreement term.  For the three months ended March 31, 2019, fixed-fee arrangements represented approximately 84.8% of the Company’s flying agreements revenue.

Under the Company’s revenue-sharing arrangements (referred to as a “revenue-sharing” or “prorate” arrangement), the major airline partner and the Company negotiate a passenger fare proration formula, pursuant to which the Company receives a percentage of the ticket revenues for those passengers traveling for one portion of their trip on a Company airline and the other portion of their trip on the major airline partner.  Under the Company’s prorate flying agreements, the performance obligation is met and revenue is recognized when each flight is completed based upon the portion of the prorate passenger fare the Company anticipates that it will receive for each completed flight. The transaction price for the prorate agreements is determined from the proration formula derived from each passenger ticket amount on each completed flight over the agreement term.  For the three months ended March 31, 2019, prorate flying arrangements represented approximately 15.2% of the Company’s flying agreements revenue.

Airport customer service and other revenues primarily consist of ground handling functions, such as gate and ramp agent services at applicable airports where the Company provides such services. The transaction price for airport customer service agreements is determined from an agreed-upon rate by location applied to the applicable number of flights handled by the Company over the agreement term. Additionally, airport customer service and other revenues includes revenue generated from aircraft and spare engines leased to third parties. As of March 31, 2019, the Company leased regional jet aircraft and spare engines to third parties. Of the Company’s $5.3 billion of property and equipment, net, $23.2 million was leased to third parties under operating leases as of March 31, 2019. The Company mitigates the residual asset risks of these assets by leasing aircraft and engine types that can be operated by the Company in the event of a default. Additionally, the operating leases typically have specified lease return condition requirements paid by the lessee to the Company and the Company typically maintains inspection rights under the leases. The following table summarizes future minimum rental income under operating leases primarily related to leased aircraft that had remaining non-cancelable lease terms as of March 31, 2019 (in thousands):

April 2019 through December 2019	$	18,495
2020		13,034
2021		7,956
2022		3,125
2023		185
Thereafter		—
	$	42,795

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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.

The following table represents the Company’s flying agreements revenue by type for the three-month period ended March 31, 2019 and 2018 (in thousands):

	For the three months ended March 31,
	2019		2018
Capacity purchase agreements revenue: flight operations	$	386,545	$	469,025
Capacity purchase agreements revenue: aircraft lease revenue		207,381		189,068
Prorate agreements revenue		106,075		109,871
Flying agreements revenue	$	700,001	$	767,964

A portion of the Company’s compensation under its fixed-fee agreements is designed to reimburse the Company for certain aircraft ownership costs. The consideration for aircraft ownership costs 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. The consideration received for the use of the aircraft under the Company’s fixed-fee agreements is reflected as lease revenue, inasmuch as the agreements identify the “right of use” of a specific type and number of aircraft over a stated period of time. The lease revenue associated with the Company’s fixed-fee agreements is accounted for as an operating lease and is reflected as flying agreements revenue on the Company’s consolidated statements of comprehensive income. The Company has not separately stated aircraft rental income and aircraft rental expense in the consolidated statement of comprehensive income since the use of the aircraft is not a separate activity of the total service provided.

The Company’s fixed-fee and prorate agreements include weekly provisional cash payments from the respective major airline partner based on a projected level of flying each month. The Company and each major airline partner subsequently reconcile these payments to the actual completed flight activity on a monthly or quarterly basis.  In the event a flying agreement includes a mid-term rate reset to adjust rates prospectively and the contractual rates under the Company’s flying agreements have not been finalized at quarterly or annual financial statement dates, the Company applies the variable constraint guidance under Accounting Standards Update No. 2014‑09, “Revenue from Contracts with Customers, (Topic 606)” (“Topic 606”), where the Company records revenue to the extent it believes that it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is subsequently resolved.

In several of the Company’s agreements, the Company is eligible to receive incentive compensation upon the achievement of certain performance criteria. The incentives are defined in the agreements and are measured and determined on a monthly, quarterly or semi‑annual basis. At the end of each period during the term of an agreement, the Company calculates the incentives achieved during that period and recognizes revenue attributable to that agreement accordingly, subject to the variable constraint guidance under Topic 606.

The following table summarizes the significant provisions of each code-share agreement SkyWest Airlines has with each major airline partner:

Delta Connection Agreements
Agreement	Aircraft type	Number of Aircraft	Term / Termination Dates
Delta Connection Agreement (fixed-fee arrangement)	•CRJ 200 •CRJ 700 •CRJ 900 •E175	58 18 43 50	•Individual aircraft have scheduled removal dates from 2019 to 2030
Delta Connection Prorate Agreement (revenue-sharing arrangement)	•CRJ 200	29	•Terminable with 30-day notice

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United Express Agreements
Agreement	Aircraft type	Number of Aircraft	Term / Termination Dates
United Express Agreements (fixed-fee arrangement)	•CRJ 200 •CRJ 700 •E175	68 19 65	•Individual aircraft have scheduled removal dates from 2020 to 2029
United Express Prorate Agreement (revenue-sharing arrangement)	•CRJ 200	25	•Terminable with 120-day notice

American Agreements
Agreement	Aircraft type	Number of Aircraft	Term / Termination Dates
American Agreement (fixed-fee arrangement)	•CRJ 700	62	•Individual aircraft have scheduled removal dates from 2022 to 2025
American Prorate Agreement (revenue-sharing arrangement)	•CRJ 200	7	•Terminable with 120-day notice
Alaska Capacity Purchase Agreement
Agreement	Aircraft type	Number of Aircraft		Term / Termination Dates
Alaska Agreement (fixed-fee arrangement)	•E175	32		•Individual aircraft have scheduled removal dates from 2027 to 2030

In addition to the contractual arrangements described above, SkyWest Airlines has entered into fixed-fee agreements with Alaska and Delta to place additional Embraer E175 dual-class regional jet aircraft (“E175”) into service.  As of March 31, 2019, the Company was scheduled to take delivery of eight E175 aircraft in connection with its agreement with Delta (four aircraft in 2019 and four aircraft in 2020) and three E175 aircraft in 2021 in connection with its agreement with Alaska. Final delivery dates may be adjusted based on various factors.

SkyWest Airlines also entered into an agreement with Delta in the second quarter of 2018 to operate 20 Canadair CRJ900 regional jet aircraft (“CRJ900”) aircraft under a fixed-fee agreement. As of March 31, 2019, SkyWest Airlines had placed eight of these CRJ900 aircraft into service with Delta. The delivery dates for the remaining 12 aircraft are expected to continue through the end of 2020. The remaining 12 new CRJ900 aircraft will replace 12 Canadair CRJ700 regional jet aircraft (“CRJ700”) scheduled to expire under SkyWest’s flying contracts with Delta.

When an aircraft is scheduled to be removed from a fixed-fee arrangement, the Company may, as practical under the circumstances, negotiate an extension with the respective major airline partner, negotiate the placement of the aircraft with another major airline partner, return the aircraft to the lessor if the aircraft is leased and the lease is expiring, place owned aircraft for sale, or pursue other uses for the aircraft. Other uses for the aircraft may include placing the aircraft in a prorate arrangement, leasing the aircraft to a third party or parting out the aircraft to use the engines and parts as spare inventory or to lease the engines to a third party.

The Company’s operating revenues could be impacted by a number of factors, including changes to the Company’s code-share agreements with its major airline partners, contract modifications resulting from contract renegotiations, 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 airline partners.

Note 3 — Share-Based Compensation and Stock Repurchases

During the three months ended March 31, 2019, the Company granted 101,400 restricted stock units and 83,784 performance shares to certain employees of the Company and its subsidiaries under the SkyWest, Inc. 2010 Long-Term Incentive Plan.  Both the restricted stock units and performance shares have a three-year vesting period, during which the recipient must remain employed with the Company or one of the Company’s subsidiaries. The number of performance shares awardable from the 2019 grants can range from 0% to 200% of the original amount granted depending on the Company’s performance over the three-year vesting period against the pre-established targets. Upon vesting, each

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restricted stock unit and performance share will be replaced with one share of common stock. The fair value of the restricted stock units and performance shares on the date of grant was $48.45 per share. During the three months ended March 31, 2019, the Company did not grant any options to purchase shares of common stock.  Additionally, during the three months ended March 31, 2019, the Company granted 18,576 fully-vested shares of common stock to the Company’s directors at a grant date fair value of $48.45.

The Company accounts for forfeitures of stock options, restricted stock units and performance share grants in 2019 when forfeitures occur.  The estimated fair value of the stock options, restricted stock units and performance shares is amortized over the applicable vesting periods.  During the three months ended March 31, 2019 and 2018, the Company recorded pre-tax share-based compensation expense of $3.9 million and $4.9 million, respectively.  Additionally, the Company incurred $7.9 million of employee severance related costs associated with the sale of ExpressJet, partially offset by a forfeiture credit of $4.5 million, primarily resulting from stock-based compensation awards that terminated upon the sale of ExpressJet during the three months ended March 31, 2019.

The Company repurchased 476,277 shares of its common stock for $25.0 million, and paid $9.3 million for the income tax obligation on vested employee equity awards and issued the net, after-tax shares to employees during the three months ended March 31, 2019. The Company repurchased 177,580 shares of its common stock for $10.0 million and paid $13.5 million for the income tax obligation on vested employee equity awards and issued the net, after-tax shares to employees during the three months ended March  31, 2018.

Note 4 — Net Income Per Common Share

Basic net income per common share (“Basic EPS”) excludes dilution and is computed by dividing net income by the weighted average number of common shares outstanding during the period. Diluted net income 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 per common share. During the three months ended March 31, 2019,  241,000 performance shares (at target performance) were excluded from the computation of Diluted EPS since the Company had not achieved the minimum target thresholds as of March 31, 2019. During the three months ended March  31, 2018,  372,600 performance shares (at target performance) were excluded from the computation of Diluted EPS since the Company had not achieved the minimum target thresholds as of March 31, 2018.

The calculation of the weighted average number of shares of common stock outstanding for Basic EPS and Diluted EPS for the periods indicated (in thousands, except per share data) is as follows:

	Three Months Ended
	March 31,
	2019		2018
Numerator:
Net Income	$	88,181	$	54,362
Denominator:
Weighted average number of common shares outstanding		51,440		51,921
Effect of outstanding share-based awards		658		1,112
Weighted average number of shares for diluted net income per common share		52,098		53,033
Basic earnings per share	$	1.71	$	1.05
Diluted earnings per share	$	1.69	$	1.03

Note 5 - Segment Reporting

The Company’s three reporting segments consisted of the operations of SkyWest Airlines, ExpressJet and SkyWest Leasing activities. The Company sold ExpressJet on January 22, 2019.  The segment information for ExpressJet reflects the period of time ExpressJet was operating as a subsidiary of the Company.  The Company concluded that the sale of ExpressJet did not meet the criteria for a discontinued operation.  

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The Company’s chief operating decision maker analyzes the profitability of operating new aircraft financed through the issuance of debt, including the Company’s E175 fleet, separately from the profitability of the Company’s capital deployed for ownership and financing of such aircraft. The SkyWest Leasing segment includes applicable revenue earned under the applicable fixed-fee contracts attributed to the ownership of new aircraft acquired through the issuance of debt and the respective depreciation and interest expense of such aircraft. The SkyWest Airlines segment includes revenue earned under the applicable fixed-fee contracts attributed to operating such aircraft and the respective operating costs. The SkyWest Leasing segment includes the activity of leasing regional jet aircraft and spare engines to third parties. The SkyWest Leasing segment’s total assets and capital expenditures include new aircraft acquired through the issuance of debt and assets leased to third parties.

The following represents the Company’s segment data for the three-month periods ended March 31, 2019 and 2018 (in thousands):

	Three months ended  March 31, 2019
	SkyWest				SkyWest
	Airlines		ExpressJet		Leasing		Consolidated
Operating revenues (1)	$	585,768	$	24,050	$	113,876	$	723,694
Operating expense		545,901		28,690		52,684		627,275
Depreciation and amortization expense		40,053		971		48,962		89,986
Special Items		18,508		3,361		—		21,869
Interest expense		3,818		—		28,689		32,507
Segment profit (loss) (2)		36,049		(4,640)		32,503		63,912
Total assets (as of March 31, 2019)		2,738,248		—		3,806,284		6,544,532
Capital expenditures (including non-cash)		68,650		—		345,929		414,579

	Three months ended  March 31, 2018
	SkyWest				SkyWest
	Airlines		ExpressJet		Leasing		Consolidated
Operating revenues (1)	$	556,294	$	161,081	$	66,025	$	783,400
Operating expense		498,875		166,824		29,526		695,225
Depreciation and amortization expense		37,487		11,161		28,937		77,585
Interest expense		4,476		827		20,931		26,234
Segment profit (loss) (2)		52,943		(6,570)		15,568		61,941
Identifiable intangible assets, other than goodwill		—		3,672		—		3,672
Total assets (as of March 31, 2018)		2,184,306		581,722		2,834,159		5,600,187
Capital expenditures (including non-cash)		36,283		1,338		230,167		267,788

(1) Prorate revenue, Airport customer service and other revenues is primarily reflected in the SkyWest Airlines segment.

(2) Segment profit (loss) is equal to operating income less interest expense.

Note 6 — Leases, Commitments and Contingencies

Effective January 1, 2019, the Company adopted Topic 842. The Company leases property and equipment under operating leases. For leases with durations longer than 12 months, the Company recorded the related asset and obligation at the present value of lease payments over the term.  The Company used its incremental borrowing rate to discount the lease payments based on information available at lease commencement.

Aircraft

During the three months ended March 31, 2019, the Company acquired 52 CRJ aircraft under an early lease buyout arrangement with the lessor for $111.7 million.  As of March 31, 2019, the Company had 89 aircraft under operating leases with remaining terms ranging from less than oneyear to nine years.

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With the adoption of Topic 842, the Company evaluated whether leased aircraft asset groups within the Company’s fleet were impaired. Under the transition guidance for Topic 842, a company is permitted to recognize a previously unrecognized impairment related to a right-of-use asset in the period prior to the adoption date of Topic 842 if the event giving rise to the impairment occurred before the adoption date. In 2016, the Company recorded an impairment on certain of its long-lived assets, which included the Company’s 50-seat Bombardier CRJ200 regional jet aircraft (“CRJ200”).  In 2016, the market lease rate was less than the contractual lease rate on the Company’s CRJ200 leased aircraft.  The Company recorded an impairment of $13.1 million (net of tax) as an adjustment to the Company’s January 1, 2019 retained earnings related to the previously unrecognized impairment of these leased CRJ200s.

Airport facilities

The Company has operating leases for facility space including airport terminals, office space, cargo warehouses and maintenance facilities. The Company generally leases this space from government agencies that control the use of the airport. The remaining lease terms vary from one month to 37 years. The Company’s operating leases with lease rates that are variable based on airport operating costs, use of the facilities or other variable factors are excluded from the Company’s right-of-use assets and operating lease liabilities in accordance with accounting guidance.

Leases

As of March 31, 2019, the Company’s right-of-use assets were $341.9 million, the Company’s current maturities of operating lease liabilities were $73.5 million, and the Company’s noncurrent lease liabilities were $275.1 million. During the three months ended March 31, 2019, the Company had operating cash flows from operating leases of $19.7 million.

The table below presents lease related terms and discount rates as of March 31, 2019.

	March 31, 2019
Weighted-average remaining lease term
Operating leases		7.0 years
Weighted-average discount rate
Operating leases		6.4%

The Company’s lease costs for the periods indicated included the following components (in thousands):

	For the three months ended March 31,
	2019		2018		$ Change		% Change
Operating lease cost	$	27,221	$	52,833	$	(25,612)	(48.5)	%
Variable and short-term lease cost		1,475		1,419		56	3.9	%
Total lease cost	$	28,696	$	54,252	$	(25,556)	(47.1)	%

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As of March 31, 2019, the Company leased aircraft, airport facilities, office space, and other property and equipment under non-cancelable operating leases which are generally on a long-term, triple net lease basis pursuant to which the Company pays taxes, maintenance, insurance and certain other operating expenses applicable to the leased property.  The Company expects that, in the normal course of business, such operating leases that expire will be renewed or replaced by other leases, or the property may be purchased rather than leased. The following table summarizes future minimum rental payments primarily related to leased aircraft required under operating leases that had initial or remaining non-cancelable lease terms as of March 31, 2019 (in thousands):

April 2019 through December 2019	$	54,799
2020		93,640
2021		75,898
2022		67,668
2023		62,498
Thereafter		87,591
	$	442,094

As of March 31, 2019, the Company had a firm purchase commitment for eleven E175 aircraft from Embraer, S.A. with scheduled delivery dates through 2021.

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

	Total		Apr - Dec 2019		2020		2021		2022		2023		Thereafter
Operating lease payments for aircraft and facility obligations	$	442,094	$	54,799	$	93,640	$	75,898	$	67,668	$	62,498	$	87,591
Firm aircraft and spare engine commitments		329,327		139,974		131,657		57,696		—		—		—
Interest commitments (1)		628,528		95,377		114,048		98,884		84,754		68,950		166,515
Principal maturities on long-term debt		3,121,661		279,873		357,228		339,297		352,717		361,215		1,431,331
Total commitments and obligations	$	4,521,610	$	570,023	$	696,573	$	571,775	$	505,139	$	492,663	$	1,685,437

(1) At March 31, 2019, the Company had variable rate notes representing only 0.2% of its total long-term debt.

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Note 7 — Fair Value Measurements

The Company holds certain assets that are required to be measured at fair value in accordance with GAAP. The Company determined the 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 March 31, 2019 and December 31, 2018, 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 March 31, 2019
	Total		Level 1		Level 2		Level 3
Cash, Cash Equivalents	$	290,885	$	290,885	$	—	$	—
Marketable Securities
Bonds and bond funds	$	154,407	$	—	$	154,407	$	—
Commercial paper		98,990		—		98,990		—
		253,397		—		253,397		—
Total Assets Measured at Fair Value	$	544,282	$	290,885	$	253,397	$	—

	Fair Value Measurements as of December 31, 2018
	Total		Level 1		Level 2		Level 3
Cash, Cash Equivalents	$	328,384	$	328,384	$	—	$	—
Marketable Securities
Bonds and bond funds	$	229,783	$	—	$	229,783	$	—
Commercial paper		131,162		—		131,162		—
		360,945		—		360,945		—
Total Assets Measured at Fair Value	$	689,329	$	328,384	$	360,945	$	—

The Company’s “marketable securities” classified as Level 2 securities primarily utilize broker quotes in a non-active market for valuation of these securities.

The Company did not make any significant transfers of securities between Level 1, Level 2 and Level 3 during the three months ended March 31, 2019.  The Company’s policy regarding the recording of transfers between levels is to record any such transfers at the end of the reporting period.

As of March 31, 2019 and December 31, 2018, the Company classified $253.4 million and $360.9 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.  As of March 31, 2019 and December 31, 2018, the cost of the Company’s total cash and cash equivalents and available for sale securities was $544.2 million and $689.4 million, respectively.

The fair value of the Company’s long-term debt classified as Level 2 debt was estimated using discounted cash flow analyses, based on the Company’s current estimated incremental borrowing rates for similar types of borrowing arrangements. 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 estimated to be $3.10 billion as of March 31, 2019 and $3.16 billion as of December 31, 2018, as compared to the carrying amount of $3.12 billion as of March 31, 2019 and $3.19 billion as of December 31, 2018.

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Note 8 — Long-Term Debt

Long-term debt consisted of the following as of March 31, 2019 and December 31, 2018 (in thousands):

	March 31, 2019		December 31, 2018
Current portion of long-term debt	$	366,583	$	354,072
Current portion of unamortized debt issue cost, net		(3,786)		(3,866)
Current portion of long-term debt, net of debt issue costs	$	362,797	$	350,206
Long-term debt, net of current maturities	$	2,755,078	$	2,831,366
Long-term portion of unamortized debt issue cost, net		(20,761)		(21,598)
Long-term debt, net of current maturities and debt issue costs	$	2,734,317	$	2,809,768
Total long-term debt (including current portion)	$	3,121,661	$	3,185,438
Total unamortized debt issue cost, net		(24,547)		(25,464)
Total long-term debt, net of debt issue costs	$	3,097,114	$	3,159,974

During the three months ended March 31, 2019, the Company took delivery of  one E175 aircraft that the Company financed through $19.9 million of long-term debt. Additionally, the Company purchased two previously-leased aircraft, for which the Company assumed $14.5 million of long-term debt.  The debt associated with the one E175 aircraft has a 12-year term, is due in quarterly installments with a fixed annual interest rate of 3.9% and is secured by the E175 aircraft. The Company acquired two aircraft pursuant to the acquisition of debt under the existing leases during the three months ended March 31, 2019. The debt associated with the two previously-leased aircraft has a term of 18 months with monthly interest only payments with a fixed annual interest rate of  2.0% and is secured by the previously-leased aircraft.

As of March 31, 2019 and December 31, 2018, the Company had $80.0 million and $78.7 million, respectively, in letters of credit and surety bonds outstanding with various banks and surety institutions.

Note 9 — Gain on Sale

ExpressJet Sale

On January 22, 2019, the Company completed the sale of its former wholly-owned subsidiary ExpressJet. The Company recorded a gain of $46.6 million (pre-tax) from the sale of ExpressJet. The closing of the transaction was completed in two parts, through an asset sale and stock sale, as further described below.

Asset Sale

On January 11, 2019, pursuant to the terms and conditions of the Asset Purchase Agreement, dated as of December 17, 2018, by and among the Company, ExpressJet and United, United acquired certain specified assets and liabilities of ExpressJet, including, among other things, aircraft engines, auxiliary power units, rotable spare parts, ground support equipment and flight training equipment for $60.8 million in cash, subject to certain purchase price adjustments (the “Asset Sale”). Certain assets and liabilities of ExpressJet were expressly excluded from the Asset Sale.

Stock Sale

Additionally, on January 22, 2019, pursuant to the terms and conditions of the Stock Purchase Agreement, dated as of December 17, 2018, by and among the Company and ManaAir, LLC, a company in which United owns a minority interest (the “Buyer”), the Buyer acquired all of the outstanding shares of capital stock of ExpressJet from the Company for $18.8 million in cash, subject to certain purchase price adjustments (the “Stock Sale,”). To facilitate payment of the purchase price for the Stock Sale, at the closing of the Stock Sale, the Company loaned $26 million to Kair Enterprises, Inc. (the “Borrower”), the majority owner of the Buyer.  Such loan accrues interest at the rate of 6.85% per annum, matures

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on the last business day of the last month immediately preceding the two-year anniversary of the closing of the Stock Sale and is secured by, among other things, the Borrower’s ownership interests in the Buyer. The Company also agreed to lease 16 CRJ200 aircraft to ExpressJet for up to a five-year term as part of the transaction.

Note 10 — Special Items

During the three months ended March 31, 2019, the Company terminated an agreement with an aircraft manufacturer that obligated the Company to future aircraft lease return conditions on aircraft the Company leased.  In conjunction with the terminated agreement, the aircraft manufacturer released the Company from the future aircraft lease return obligations and the Company agreed to terminate aircraft part credits previously issued by the manufacturer to the Company.  As a result of the terminated agreement, the Company recorded a non-cash expense of $18.5 million (pre-tax) during the three months ended March 31, 2019 to write-off the terminated aircraft part credits, which was reflected as a special items operating expense in the consolidated statement of comprehensive income.

Additionally, during the three months ended March 31, 2019, the Company incurred $3.4 million of employee severance related costs associated with the sale of ExpressJet that are also reflected in special items.

Note 11 — Income Taxes

The Company’s effective tax rate for the three months ended March 31, 2019 was 23.0%. The Company’s effective tax rate for the three months ended March 31, 2019 varied from the federal statutory rate of 21.0% primarily due to the provision for state income taxes and the impact of non-deductible expenses, partially offset by a $2.3 million discrete tax benefit from excess tax deductions generated from employee equity transactions that occurred during the three months ended March 31, 2019.

Note 12 — Legal Matters

The Company is subject to certain legal actions which it considers routine to its business activities. As of March 31, 2019, the Company’s 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.

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ITEM 2: 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 the results of operations of SkyWest, Inc. (“SkyWest” “we” or “us”) during the three-month periods ended March 31, 2019 and 2018. Also discussed is our financial condition as of March 31, 2019 and December 31, 2018. You should read this discussion in conjunction with our condensed consolidated financial statements for the three months ended March 31, 2019, including the notes thereto, appearing elsewhere in this Report.  This discussion and analysis contains forward-looking statements. Please refer to the section of this Report entitled “Cautionary Statement Concerning Forward-Looking Statements” for discussion of uncertainties, risks and assumptions associated with these statements.

On January 22, 2019, we completed the sale of our former wholly-owned subsidiary ExpressJet Airlines, Inc. (“ExpressJet”).  Our financial and operating results for the periods ended March 31, 2019 and March 31, 2018, and our financial position as of December 31, 2018 contained in this Report, include the financial results and position of ExpressJet for those respective periods, as we concluded that the sale of ExpressJet did not meet the criteria for presentation of discontinued operations.

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, 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 for a number of reasons, including but not limited to: the challenges of competing successfully in a highly competitive and rapidly changing industry; developments associated with fluctuations in the economy and the demand for air travel; the financial stability of United Airlines, Inc. (“United”), Delta Air Lines, Inc. (“Delta”), American Airlines, Inc. (“American”) and Alaska Airlines, Inc. (“Alaska”) (each, a “major airline partner”) and any potential impact of their financial condition on our operations; fluctuations in flight schedules, which are determined by the major airline partners for whom SkyWest conducts flight operations; variations in market and economic conditions; significant aircraft lease and debt commitments; realization of manufacturer residual value guarantees on applicable SkyWest aircraft; residual aircraft values and related impairment charges; the impact of global instability; labor relations and costs; potential fluctuations in fuel costs, and potential fuel shortages; the impact of weather-related or other natural disasters on air travel and airline costs; new aircraft deliveries; and the ability to attract and retain qualified pilots, as well as other factors identified under the heading “Risk Factors” in Part I, Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2018, under the heading “Risk Factors” in Part II, Item 1A of this Report, elsewhere in this Report, in our other filings with the Securities and Exchange Commission (the “SEC”) and other unanticipated 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.

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Overview

We have the largest regional airline operations in the United States through our operating subsidiary SkyWest Airlines, Inc. (“SkyWest Airlines”). As of March 31, 2019, SkyWest Airlines offered scheduled passenger service with approximately 2,150 total daily departures to destinations in the United States, Canada, Mexico and the Caribbean. As of March 31, 2019, SkyWest Airlines had a total fleet of 522 aircraft, of which 476 were in scheduled service, summarized as follows:

	CRJ200	CRJ700	CRJ900	E175	Total
United	93	19	—	65	177
Delta	87	18	43	50	198
American	7	62	—	—	69
Alaska	—	—	—	32	32
Aircraft in scheduled service	187	99	43	147	476
Subleased to an un-affiliated entity	20	—	—	—	20
Other*	—	25	1	—	26
Total	207	124	44	147	522

*As of March 31, 2019, these aircraft have been removed from service and are in the process of being returned under the applicable leasing arrangement or are aircraft transitioning between code-share agreements with our major airline partners.

As of March 31, 2019, approximately 41.6% of our aircraft in scheduled service was operated for Delta, approximately 37.2% was operated for United, approximately 14.5% was operated for American and approximately 6.7% was operated for Alaska.

Our business model is based on providing scheduled regional airline service under code-share agreements (commercial agreements, typically in the form of fixed-fee arrangements or prorate arrangements, each as defined below, between airlines that, among other things, allow one airline to use another airline’s flight designator codes on its flights) with our major airline partners.  Our success is principally dependent on our ability to meet the needs of our major airline partners through providing a reliable and safe operation at attractive economics. Since March 31, 2018, we have added 35 new Embraer E175 dual-class regional jet aircraft (“E175”) and eight new Canadair CRJ900 regional jet aircraft (“CRJ900”) to our fleet, and removed 100 Embraer ERJ145 regional jet aircraft (“ERJ145”) and Embraer ERJ135 regional jet aircraft (“ERJ135”), 28 CRJ700 regional jet aircraft (“CRJ700”) and 7 CRJ900 aircraft that were operating under less profitable or unprofitable flying agreements.

We anticipate our fleet will continue to evolve, as we are scheduled to add eleven new E175 and 12 new CRJ900 aircraft to existing fixed-fee agreements by the end of 2021. We anticipate these new aircraft will be replacing older CRJ900 and CRJ700 aircraft currently operating under fixed-fee agreements. Our primary objective in the fleet changes 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 or unprofitable arrangements.

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 arrangements (referred to as “fixed-fee arrangements,” “fixed-fee agreements,” “fixed-fee contracts,” “contract flying arrangements” or “capacity purchase agreements”) and revenue-sharing arrangements (referred to as “prorate” arrangements). For the three months ended March 31, 2019, contract flying revenue and prorate revenue represented approximately 84.8% and 15.2%, respectively, of our total flying agreements revenue. 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 (measured from takeoff to landing, including taxi time), flight departures and other operating measures. On prorate routes, our revenue may fluctuate based on ticket prices and passenger loads and we are responsible for all costs to operate the flight, including fuel.

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First Quarter Summary

Our total operating revenues of $723.7 million for the three months ended March 31, 2019 decreased 7.6% compared to total operating revenues of $783.4 million for the three months ended March 31, 2018. We had net income of $88.2 million, or $1.69 per diluted share, for the three months ended March 31, 2019, compared to net income of $54.4  million, or $1.03 per diluted share, for the three months ended March  31, 2018.

Significant items affecting our financial performance during the three months ended March 31, 2019 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 flying agreements revenue under our fixed-fee arrangements.  During the three months ended March 31, 2019, we had a net decrease in the number of aircraft operating under fixed-fee agreements, primarily related to the sale of ExpressJet. As summarized under the Fleet activity section below, from March 31, 2018 to March 31, 2019, we removed 147 aircraft from service that were operating under less profitable flying contracts and added 43 aircraft to new or existing fixed-fee arrangements at improved economics.  The number of aircraft available for scheduled service decreased from 580 aircraft at March 31, 2018 to 476 at March 31, 2019.  Our completed block hours decreased 16.1% over the same period primarily due to the sale of ExpressJet and the corresponding decrease in related block hours.

Our total revenues decreased $59.7 million for the three months ended March 31, 2019 compared to the three months ended March 31, 2018, related to the sale of ExpressJet and the corresponding decrease in revenue associated with ExpressJet flying contracts. ExpressJet revenue decreased from $161.1 million to $28.7 million for the three months ended March 31, 2018 and 2019, respectively. Revenue from SkyWest Airlines and our leasing subsidiary SkyWest Leasing, Inc. (“SkyWest Leasing”) increased from $622.3 million for the three months ended March 31, 2018 to $699.6 million for the three months ended March 31, 2019. This increase in revenue was primarily related to additional revenue generated from 35 new E175 aircraft and eight new CRJ900 aircraft added under fixed-fee contracts since March 31, 2018.

Operating Expenses

Our total operating expenses decreased $68.0 million for the three months ended March 31, 2019, compared to the three months ended March 31, 2018.  This decrease was due to the sale of ExpressJet and the corresponding reduction in ExpressJet operating expenses, partially offset by additional operating expenses at SkyWest Airlines and SkyWest Leasing that resulted from new, additional aircraft we placed into service since March 31, 2018. Additional details regarding the increase in our operating expenses are described in the section of this Report entitled “Results of Operations.”

Fleet activity

The following table summarizes our fleet scheduled for service as of March 31, 2019 and 2018:

Aircraft in Service	March 31, 2019	March 31, 2018
CRJ200s	187	199
CRJ700s	99	127
CRJ900s	43	42
ERJ145/135s	—	100
E175s	147	112
Total	476	580

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Changes in our fleet activity from March 31, 2018 to March 31, 2019 are summarized as follows:

Aircraft available for scheduled service at March 31, 2018:		580
Additions:
New E175 aircraft:	35
New CRJ900 aircraft:	8
New aircraft added to fleet:		43
Used aircraft transitioned back into service, net		3
ExpressJet removals:
ERJ145/ERJ135 aircraft:	(100)
CRJ700 aircraft:	(43)
CRJ900 aircraft:	(6)
Total ExpressJet removals:		(149)
SkyWest Airlines removal:
CRJ900 aircraft:		(1)
Aircraft available for scheduled service at March 31, 2019:		476

Critical Accounting Policies

Our significant accounting policies are summarized in Note 1 to our consolidated financial statements for the year ended December 31, 2018, which are presented in our Annual Report on Form 10-K for the year ended December 31, 2018.  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, maintenance, aircraft leases, impairment of long-lived assets and stock-based compensation expense. 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 may differ materially, from such estimates.

We adopted Topic 842 as of January 1, 2019, utilizing the modified retrospective approach. See Note 1 to the financial statements contained in Part I, Item 1 of this report for additional information.

Recent Accounting Pronouncements

See Note 1 to the condensed consolidated financial statements for a description of recent accounting pronouncements.

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Results of Operations

Three Months Ended March 31, 2019 and 2018

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

	For the three months ended March 31,
	2019		2018		% Change
SkyWest Airlines block hours	349,389		328,944		6.2	%
ExpressJet block hours	16,904		107,423		(84.3)	%
Total block hours	366,293		436,367		(16.1)	%
SkyWest Airlines Only
Departures	193,475		185,478		4.3	%
Passengers carried	9,614,952		9,059,473		6.1	%
Passenger load factor	78.6	%	78.8	%	(0.2)	pts
Average passenger trip length (miles)	507		493		2.8	%

During the three months ended March 31, 2018, ExpressJet had departures and passengers carried of 62,649 and 2,260,754, respectively. The number of ExpressJet departures and passengers carried was not significant for the three months ended March 31, 2019, given that the sale of ExpressJet was completed in January 2019.

Operating Revenues

The following table summarizes our operating revenue for the periods indicated (dollar amounts in thousands):

	For the three months ended March 31,
	2019		2018		$ Change		% Change
Flying agreements	$	700,001	$	767,964	$	(67,963)	(8.8)	%
Airport customer service and other		23,693		15,436		8,257	53.5	%
Total operating revenues	$	723,694	$	783,400	$	(59,706)	(7.6)	%

Flying agreements revenue primarily consists of revenue earned on flights we operate under our capacity purchase agreements and prorate agreements with our major airline partners.  Airport customer service and other revenues consist of revenue earned from providing airport counter, gate and ramp services, and revenue from leasing regional jet aircraft and spare engines to third parties.  Changes in our flying agreements revenue are summarized below (dollar amounts in thousands).  

	For the three months ended March 31,
	2019		2018		$ Change		% Change
Capacity purchase agreements revenue: flight operations	$	386,545	$	469,025	$	(82,480)	(17.6)	%
Capacity purchase agreements revenue: aircraft lease revenue		207,381		189,068		18,313	9.7	%
Prorate agreements revenue		106,075		109,871		(3,796)	(3.5)	%
Flying agreements revenue	$	700,001	$	767,964	$	(67,963)	(8.8)	%

The decrease in “Capacity purchase agreements revenue: flight operations” of $82.4 million was primarily due to the sale of ExpressJet and the corresponding decrease in revenue, partially offset by the incremental revenue generated from 35 new E175 aircraft and eight new CRJ900 aircraft added to our fleet and economic improvements made to certain existing fixed-fee agreements since March 31, 2018.  The increase in “Capacity purchase agreement revenue: aircraft lease revenue” of $18.3 million was primarily due to the 35 new E175 aircraft added subsequent to March 31, 2018.  The decrease in prorate agreement revenue of $3.8 million was primarily due to a decrease in the number of prorate flights operated during the three months ended March 31, 2019 compared to the three months ended March 31, 2018.

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The $8.3 million increase in airport customer service and other revenues was primarily related to an increase in revenue from leasing aircraft and spare engines to third parties.

Operating Expenses

The following table summarizes our operating expenses and interest expense, collectively, “Total airline expense" for the periods indicated (dollar amounts in thousands):

	For the three months ended March 31,
	2019		2018		$ Change		% Change
Salaries, wages and benefits	$	257,588	$	306,719	$	(49,131)	(16.0)	%
Aircraft maintenance, materials and repairs		118,262		141,606		(23,344)	(16.5)	%
Depreciation and amortization		89,986		77,585		12,401	16.0	%
Airport-related expenses		30,647		29,307		1,340	4.6	%
Aircraft fuel		25,656		26,939		(1,283)	(4.8)	%
Aircraft rentals		20,158		44,680		(24,522)	(54.9)	%
Special items		21,869		—		21,869	NM
Other operating expenses		63,109		68,389		(5,280)	(7.7)	%
Total operating expenses	$	627,275	$	695,225	$	(67,950)	(9.8)	%
Interest expense		32,507		26,234		6,273	23.9	%
Total airline expenses	$	659,782	$	721,459	$	(61,677)	(8.5)	%

Salaries, wages and benefits.  The $49.1 million decrease in salaries, wages and benefits was primarily due to a decrease in direct labor costs resulting from the sale of ExpressJet, partially offset by increased labor costs and employee benefit costs for certain work groups, including flight crews at SkyWest Airlines.

Aircraft maintenance, materials and repairs.  The $23.3 million decrease in aircraft maintenance expense was primarily due to a decrease in direct maintenance costs that corresponds with our sale of ExpressJet. This decrease in aircraft maintenance expense was partially offset by an increase in the percentage of our fleet that is under long-term, Power-By-The-Hour engine maintenance agreements at SkyWest Airlines, including the additional 35 E175 aircraft added since March 31, 2018.

Depreciation and amortization.  The $12.4 million increase in depreciation and amortization expense was primarily due to the purchase of 35 E175 aircraft and spare engines subsequent to March 31, 2018.

Airport-related expenses.  Airport-related expenses include airport-related customer service costs such as outsourced airport gate and ramp agent services, airport security fees, passenger interruption costs, deicing, landing fees and station rents (our employee customer service labor costs are reflected in salaries, wages and benefits). The $1.3 million increase in airport-related expenses was primarily due to an increase in deicing events for aircraft in our prorate operations during the three months ended March 31, 2019.  

Aircraft fuel.  The $1.3 million decrease in fuel cost was primarily due to a decrease in the number of prorate flights we operated and corresponding decrease in gallons of fuel we purchased, partially offset by an increase in our average fuel cost per gallon from $2.40 for the three months ended March 31, 2018 to $2.43 for the three months ended March 31, 2019. We purchase and incur expense for all fuel on flights operated under our prorate agreements. All fuel costs incurred under our fixed-fee contracts are either purchased directly by our major airline partner, or if purchased by us, we record the direct reimbursement as a reduction to our fuel expense. The following table summarizes the gallons of fuel we purchased under our prorate agreements, for the periods indicated:

	For the three months ended March 31,
(in thousands)	2019		2018		% Change
Fuel gallons purchased		10,579		11,213	(5.7)	%
Fuel expense	$	25,656	$	26,939	(4.8)	%

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Aircraft rentals.    During the three months ended March 31, 2019, we acquired 52 CRJ aircraft through an early lease buyout agreement.  The $24.5 million decrease in aircraft rentals was primarily due to the acquisition of these 52 CRJ aircraft and through a reduction of our fleet size that was financed through leases as a result of scheduled lease expirations subsequent to March 31, 2018.

Special Items.  The $21.9 million special items expense for the three months ended March 31, 2019 related to a non-cash write-off of $18.5 million in aircraft manufacturer part credits that we forfeited to settle future lease return obligations with the aircraft manufacturer.  The $18.5 million of expense was included in the SkyWest Airlines segment.  The special items expense also included $3.4 million of expense associated with a cash payout of certain ExpressJet employees stock equity grants as part of the sale of ExpressJet, which was reflected in the ExpressJet segment.

Other operating expenses.  Other operating expenses primarily consist of property taxes, hull and liability insurance, simulator costs, crew per diem, and crew hotel costs. The $5.3 million decrease in other operating expenses was primarily related to the sale of ExpressJet and the related decrease in crew costs associated with the decrease in expenses associated with that operation. 

Interest Expense. The $6.3 million increase in interest expense was primarily related to the additional interest expense associated with the 35 E175 aircraft added to our fleet since March 31, 2018, which were debt financed.

Total airline expenses.  The $61.7 million decrease in total airline expenses was primarily related to the sale of ExpressJet and the related expenses associated with ExpressJet’s prior operations, partially offset by additional operating expenses at SkyWest Airlines and SkyWest Leasing that resulted from new, additional aircraft we placed into service since March 31, 2018.

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

Interest income.    Interest income increased $2.1 million, or 123.3%, during the three months ended March 31, 2019, compared to the three months ended March 31, 2018. The increase in interest income was primarily related to an increase in interest rates subsequent to March 31, 2018.

Other income (expense).  During the three months ended March 31, 2019, we had other income of $46.7 million primarily related to the gain on sale of ExpressJet. During the three months ended March 31, 2018, we had other income of $3.6 million primarily related to a mark-to-market gain on trading securities.

Income taxes. Our provision for income taxes was 23.0% and 19.1% for the three months ended March 31, 2019 and 2018, respectively. The increase in the effective tax rate primarily relates to a smaller discrete tax benefit from excess tax deductions generated from employee equity transactions that occurred during the three months ended March 31, 2019 compared to the three months ended March 31, 2018.

 Net income.  Primarily due to the factors described above, we generated net income of $88.2 million, or $1.69 per diluted share, for the three months ended March 31, 2019, compared to net income of $54.4 million, or $1.03 per diluted share, for the three months ended March 31, 2018.

Our Business Segments

Three Months Ended March 31, 2019 and 2018

For the three months ended March 31, 2019 and 2018, we had three reportable segments which were the basis of our internal financial reporting: SkyWest Airlines, ExpressJet and SkyWest Leasing. 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 segments were SkyWest Airlines, ExpressJet and SkyWest Leasing. Corporate overhead expense was allocated to the operating expenses of SkyWest Airlines and ExpressJet. The segment information

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for ExpressJet for the three months ended March 31, 2019 reflects ExpressJet’s results prior to the sale of ExpressJet on January 22, 2019.

	For the three months ended March 31,
	(dollar amounts in thousands)
	2019		2018		$ Change		% Change
Operating Revenues:
SkyWest Airlines operating revenue	$	585,768	$	556,294	$	29,474	5.3	%
ExpressJet operating revenues		24,050		161,081		(137,031)	(85.1)	%
SkyWest Leasing operating revenues		113,876		66,025		47,851	72.5	%
Total Operating Revenues	$	723,694	$	783,400	$	(59,706)	(7.6)	%
Airline Expenses:
SkyWest Airlines airline expense	$	549,719	$	503,351	$	46,368	9.2	%
ExpressJet airline expense		28,690		167,651		(138,961)	(82.9)	%
SkyWest Leasing airline expense		81,373		50,457		30,916	61.3	%
Total Airline Expense (1)	$	659,782	$	721,459	$	(61,677)	(8.5)	%
Segment profit (loss):
SkyWest Airlines segment profit	$	36,049	$	52,943	$	(16,894)	(31.9)	%
ExpressJet segment loss		(4,640)		(6,570)		1,930	(29.4)	%
SkyWest Leasing profit		32,503		15,568		16,935	108.8	%
Total Segment Profit	$	63,912	$	61,941	$	1,971	3.2	%
Interest Income and other income		3,807		1,705		2,102	123.3	%
Other Income (Expense), net		46,725		3,558		43,167	*
Consolidated Income Before Taxes	$	114,444	$	67,204	$	47,240	70.3	%

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

* is more than 500%

SkyWest Airlines Segment Profit.  SkyWest Airlines block hour production increased to 349,389, or 6.2%, for the three months ended March 31, 2019, from 328,944 for the three months ended March 31, 2018, primarily due to the additional block hour production from 35 new E175 aircraft and eight new CRJ900 aircraft added subsequent to March 31, 2018.  Significant items contributing to the SkyWest Airlines segment profit are set forth below.

The $29.5 million, or 5.3%, increase in SkyWest Airlines Operating Revenues for the three months ended March 31, 2019, compared to the three months ended March 31, 2018, was primarily due to revenue associated with 35 E175 aircraft and eight CRJ900 aircraft added subsequent to March 31, 2018.  

The $46.4 million, or 9.2%, increase in SkyWest Airlines Airline Expenses for the three months ended March 31, 2019, compared to the three months ended March 31, 2018, was primarily due to the following factors:

· SkyWest Airlines’ salaries, wages and benefits expense increased by $29.6 million, or 13.9%, primarily due to increased labor costs and employee benefit costs for certain work groups, including flight crews.

· SkyWest Airlines’ aircraft maintenance, materials and repairs expense increased by $6.8 million, or 6.2%, primarily attributable to direct maintenance costs related to the increased volume of block hours during the three months ended March 31, 2019 compared to the three months ended March 31, 2018.

· SkyWest Airlines’ fuel expense decreased $1.3 million, or 4.8%, primarily due to a decrease in the number of prorate flights we operated and corresponding decrease in gallons of fuel we purchased, partially offset by an increase in our average fuel cost per gallon from $2.40 for the three months ended March 31, 2018 to $2.43 for the three months ended March 31, 2019.

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· SkyWest Airlines included special items related to a non-cash write-off of $18.5 million in aircraft manufacturer part credits that we forfeited to settle future lease return obligations with the aircraft manufacturer.

· SkyWest Airlines’ other operating expense increased $8.0 million, or 15.4%, primarily due to an increase in the use of hotels for crews, property taxes on additional aircraft added since March 31, 2018 and an increase in direct operating costs associated with the increase in block hour production year-over-year.

ExpressJet Segment Loss.  ExpressJet’s segment loss decreased $1.9 million during the three months ended March 31, 2019, compared to the three months ended March 31, 2018, primarily due to the sale of ExpressJet during the three months ended March 31, 2019.

SkyWest Leasing Segment Profit.  SkyWest Leasing profit increased $16.9 million during the three months ended March 31, 2019, compared to the three months ended March 31, 2018, primarily due to 35 E175 aircraft added to our fleet subsequent to March 31, 2018 and additional revenue from leasing aircraft and spare engines to third parties.

Liquidity and Capital Resources

Sources and Uses of Cash

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 three months ended March 31, 2019 and 2018, and our total cash and marketable securities positions as of March 31, 2019 and December 31, 2018 (in thousands):

	For the three months ended March 31,
	2019		2018		$ Change		% Change
Net cash provided by operating activities	$	154,914	$	165,895	$	(10,981)	(6.6)	%
Net cash used in investing activities		(76,905)		(100,073)		23,168	(23.2)	%
Net cash provided by (used in) financing activities		(115,508)		3,833		(119,341)	(3,113.5)	%

	March 31,		December 31,
	2019		2018		$ Change		% Change
Cash and cash equivalents	$	290,885	$	328,384	$	(37,499)	(11.4)	%
Marketable securities		253,397		360,945		(107,548)	(29.8)	%
Total cash and marketable securities	$	544,282	$	689,329	$	(145,047)	(21.0)	%

Cash Flows provided by Operating Activities

The $11.0 million decrease in net cash provided by operating activities was primarily due to changes in current asset and liability accounts. This decrease in net cash provided by operating activities was partially offset by an increase in income before income taxes of $33.8 million for the three months ended March 31, 2019 compared to the three months ended March 31, 2018.  

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Cash Flows used in Investing Activities

The $23.2 million decrease in cash used in investing activities was primarily due to the sale of ExpressJet for $79.6 million partially offset by a note receivable issued to the buyer of $26.4 million, resulting in net cash from the sale of ExpressJet of $53.2 million. The Company also acquired 70 previously leased aircraft and the acquisition of one E175 aircraft and the related spare aircraft assets during the three months ended March 31, 2019, compared to five E175 aircraft and the related spare aircraft assets purchased during the three months ended March 31, 2018,  which in total represented an increase of $33.1 million.

Cash Flows used in Financing Activities

The $119.3 million increase in cash used in financing activities was primarily related to the decrease in proceeds from the issuance of long-term debt of $19.9 million associated with one E175 aircraft and two previously leased aircraft acquired during the three months ended March 31, 2019, compared to proceeds from the issuance of debt of $101.3 million associated with five E175 aircraft acquired during the three months ended March 31, 2018. During the three months ended March 31, 2019, we used an additional $26.6 million as principal payments on long-term debt primarily due to the additional E175 aircraft acquired subsequent to March 31, 2018.  Additionally, during the three months ended March 31, 2019, we used an additional $10.8 million to purchase treasury shares and make income tax payments towards vested employee equity awards.

Liquidity and Capital Resources as of March 31, 2019

We believe that in the absence of unusual circumstances, the working capital currently available to us 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 March 31, 2019, our total capital mix was 42.3% equity and 57.7% long-term debt, compared to 41.1% equity and 58.9% long-term debt at December 31, 2018.

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		Apr - Dec 2019		2020		2021		2022		2023		Thereafter
Operating lease payments for aircraft and facility obligations	$	442,094	$	54,799	$	93,640	$	75,898	$	67,668	$	62,498	$	87,591
Firm aircraft and spare engine commitments		329,327		139,974		131,657		57,696		—		—		—
Interest commitments (1)		628,528		95,377		114,048		98,884		84,754		68,950		166,515
Principal maturities on long-term debt		3,121,661		279,873		357,228		339,297		352,717		361,215		1,431,331
Total commitments and obligations	$	4,521,610	$	570,023	$	696,573	$	571,775	$	505,139	$	492,663	$	1,685,437

(1) At March 31, 2019, we had variable rate notes representing only 0.2% of our total long-term debt.

Purchase Commitments and Options

As of March 31, 2019, we had a firm purchase commitment for eleven E175 aircraft from Embraer, S.A. with scheduled delivery dates through 2021.

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We have historically funded the majority of our aircraft acquisition cost with long-term debt. At the time of each aircraft acquisition, we evaluate the financing alternatives available to us, and select an appropriate method to fund the acquisition. At present, we intend to fund our acquisition of any additional aircraft through cash on hand and 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 acquisitions, as well as additional aircraft. We intend to finance the firm order for eleven E175 aircraft with approximately 85% debt and the remaining balance with cash.

Long-term Debt Obligations

As of March 31, 2019, we had $3.1 billion of long-term debt obligations, including current maturities, related to the acquisition of CRJ200, CRJ700, CRJ900 and E175 aircraft and spare engine financings. The average effective interest rate on the debt related to such aircraft and spare engine financings was approximately 4.2% at March 31, 2019.

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. In addition, we have guaranteed certain other obligations under aircraft financing and leasing agreements.

Seasonality

Our results of operations for any interim period are not necessarily indicative of those for an entire year, since the airline industry is subject to seasonal fluctuations and general economic conditions.  Our operations are somewhat favorably affected by increased travel on our prorate routes, historically occurring during the summer months, and unfavorably affected by decreased travel during the months November through February and by inclement weather, which may occasionally or frequently, depending on the severity of the inclement weather in any given winter, result in cancelled flights during the winter months.

ITEM 3: 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 fixed-fee 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 prorate operations. For the three months ended March 31, 2019, prorate flying arrangements represented approximately 15.2% of our total flying agreements revenue. For illustrative purposes only, we have estimated the impact of the market risk of fuel price fluctuations on our prorate 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 $6.4 million in fuel expense for the three months ended March 31, 2019.

Interest Rates

Our earnings may be affected by changes in interest rates due to our variable rate long-term debt. The interest rates applicable to variable rate debt may rise and increase our interest expense. At March 31, 2019, we had variable rate notes representing 0.2% of our total long-term debt compared to 0.2% of our long-term debt at December 31, 2018 and changes in interest rates are not expected to have a material adverse effect on our earnings.  

We currently intend to finance the acquisition of aircraft through manufacturer financing, third-party leases or long-term borrowings. Changes in interest rates may impact the actual cost to us to acquire these aircraft. To the extent we place these aircraft in service under our code-share agreements with Delta, United, American, Alaska or other

29

carriers, our code-share agreements currently provide that reimbursement rates will be adjusted higher or lower to reflect changes in our aircraft financing interest rates.

ITEM 4. 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 Securities Exchange Act of 1934, as amended (the “Exchange Act”), is recorded, processed, summarized and reported, within the time periods specified in the rules and forms of the SEC. Our management, including our Chief Executive Officer and Chief Financial Officer, concluded that, as of March 31, 2019, 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 three months ended March 31, 2019, we implemented changes to our processes in response to the adoption of Accounting Standards Update No. 2016-02  “Leases (Topic 842)” that became effective January 1, 2019. The operating effectiveness of these changes will be evaluated as part of our annual assessment of the effectiveness of internal controls over financial reporting.

PART II. OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

We are subject to certain legal actions which we consider routine to our business activities. As of March 31, 2019, there were no pending legal proceedings that, if decided against us, were likely to have a material adverse effect on our financial position, liquidity or results of operations.

ITEM 1A. RISK FACTORS

In addition to the other information set forth in this Report, you should carefully consider the factors discussed in Part I, Item 1A, “Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2018 and in our other filings with the SEC, which factors could materially affect our business, financial condition and results of operations.  The risks described in our reports filed with the SEC are not the only risks facing our company.  Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial also may materially adversely affect our business, financial condition and results of operations.

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ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

In February 2019, our Board of Directors authorized a new stock purchase program to repurchase up to $250.0 million of our common stock replacing the previously adopted stock purchase plan that authorized the repurchase of up to $100.0 million of our common stock. Between January 1, 2019 and February 5, 2019, we repurchased 83,282 shares of our common stock for $4.2 million under the previous $100.0 million stock purchase program. Subsequent to February 6, 2019, we repurchased additional shares under our newly authorized $250.0 million stock purchase program as set forth below. The following table summarizes the repurchases under our stock purchase programs during the three months ended March 31, 2019.

	Total Number of Shares Purchased	Average Price Paid Per Share		Total Number of Shares Purchased as Part of a Publicly Announced Program (1)	Maximum Dollar Value of Shares that May Yet Be Purchased Under the Program (in Thousands)
January 1, 2019 – January 31, 2019	20,782	$	44.37	20,782	$	24,621
February 1, 2019 – February 5, 2019	62,500	$	52.62	62,500	$	21,332
February 6, 2019 — February 28, 2019	133,606	$	55.26	133,606	$	242,617
March 1, 2019 — March 31, 2019	259,389	$	51.68	259,389	$	229,211
Total	476,277	$	52.49	476,277	$	229,211

(1) Prior to February 6, 2019, repurchases were made under the previous $100.0 million stock purchase program. Subsequent to February 6, 2019, repurchases were made under our newly authorized $250.0 million stock purchase program. Purchases are made at management’s discretion based on market conditions and financial resources. As of March 31, 2019, we had repurchased 392,995 shares of our common stock for $20.8 million under this new authorization.

ITEM 6. EXHIBITS

10.1	Severance and Release Agreement, dated as of February 12, 2019, by and between SkyWest, Inc. and Terry M. Vais (incorporated by reference to Exhibit 10.1 of Registrant’s Current Report on Form 8-K filed on February 15, 2019).
31.1	Certification of Chief Executive Officer
31.2	Certification of Chief Financial Officer
32.1	Certification of Chief Executive Officer
32.2	Certification of Chief Financial Officer
101.INS	XBRL Instance Document
101.SCH	XBRL Taxonomy Extension Schema Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document
101.LAB	XBRL Taxonomy Extension Label Linkbase Document
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document

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SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this Quarterly Report on Form 10-Q for the quarter ended March 31, 2019, to be signed on its behalf by the undersigned, thereunto duly authorized, on May 6, 2019.

SKYWEST, INC.
By	/s/ Robert J. Simmons
	Robert J. Simmons
	Chief Financial Officer

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EX-31.1

Exhibit 31.1

CERTIFICATION

I, Russell A. Childs, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of SkyWest, Inc. for the quarter ended March 31, 2019.

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 15d-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 generally 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 the 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 officer(s) 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.

ay

Date: May 6, 2019

/s/ Russell A. Childs

Russell A. Childs

Chief Executive Officer and President

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Robert J. Simmons, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of SkyWest, Inc. for the quarter ended March 31, 2019.

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 15d-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 generally 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 the 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 officer(s) 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: May 6, 2019

/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 Quarterly Report on Form 10-Q of SkyWest, Inc. (the “Company”) for the quarter ended March 31, 2019, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Russell A. Childs, Chief Executive Officer and President 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), as applicable, 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.

/s/ Russell A. Childs

Russell A. Childs

Chief Executive Officer and President

May  6, 2019

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.

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 Quarterly Report on Form 10-Q of SkyWest, Inc. (the “Company”) for the quarter ended March 31, 2019, as filed with the Securities and Exchange Commission on the date hereof (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), as applicable, 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.

/s/ Robert J. Simmons

Robert J. Simmons

Chief Financial Officer

May  6, 2019

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.

XML

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2019	Apr. 30, 2019
Document and Entity Information
Entity Registrant Name	SKYWEST INC
Entity Central Index Key	0000793733
Document Type	10-Q
Document Period End Date	Mar. 31, 2019
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		51,233,435
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1

XML

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
CURRENT ASSETS:
Cash and cash equivalents	$ 290,885	$ 328,384
Marketable Securities	253,397	360,945
Income tax receivable	21,255	25,936
Receivables, net	78,370	64,194
Inventories, net	112,566	127,690
Prepaid aircraft rents		87,031
Other current assets	24,921	26,614
Total current assets	781,394	1,020,794
PROPERTY AND EQUIPMENT:
Aircraft and rotable spares	6,696,982	6,433,916
Deposits on aircraft	37,602	42,012
Buildings and ground equipment	270,665	291,544
Total property and equipment, gross	7,005,249	6,767,472
Less-accumulated depreciation and amortization	(1,730,681)	(1,761,728)
Total property and equipment, net	5,274,568	5,005,744
OTHER ASSETS:
Operating lease right-of-use assets	341,898
Long-term prepaid assets		181,830
Other assets	146,672	104,844
Total other assets	488,570	286,674
Total assets	6,544,532	6,313,212
CURRENT LIABILITIES:
Current maturities of long-term debt	362,797	350,206
Accounts payable	340,195	331,982
Accrued salaries, wages and benefits	118,074	161,606
Taxes other than income taxes	13,901	16,024
Current maturities of operating lease liabilities	73,524
Other current liabilities	36,836	65,008
Total current liabilities	945,327	924,826
LONG-TERM DEBT, net of current maturities	2,734,317	2,809,768
DEFERRED INCOME TAXES PAYABLE	541,196	518,159
DEFERRED AIRCRAFT CREDITS		29,308
NONCURRENT OPERATING LEASES	275,088
OTHER LONG-TERM LIABILITIES	48,037	66,870
COMMITMENTS AND CONTINGENCIES (Note 6)
STOCKHOLDERS' EQUITY:
Preferred stock, 5,000,000 shares authorized; none issued
Common stock, no par value, 120,000,000 shares authorized; 81,798,773 and 81,239,289 shares issued, respectively	692,593	690,910
Retained earnings	1,845,467	1,776,585
Treasury stock, at cost, 30,500,393 and 29,850,999 shares, respectively	(537,493)	(503,182)
Accumulated other comprehensive loss		(32)
Total stockholders' equity	2,000,567	1,964,281
Total liabilities and stockholders' equity	$ 6,544,532	$ 6,313,212

XML

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Mar. 31, 2019	Dec. 31, 2018
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	81,798,773	81,239,289
Treasury stock, at cost, shares	30,500,393	29,850,999

XML

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
OPERATING REVENUES:
Total operating revenues	$ 723,694	$ 783,400
OPERATING EXPENSES:
Salaries, wages and benefits	257,588	306,719
Depreciation and amortization	89,986	77,585
Special items	21,869
Other operating expenses	63,109	68,389
Total operating expenses	627,275	695,225
OPERATING INCOME	96,419	88,175
OTHER INCOME (EXPENSE):
Interest income	3,807	1,705
Interest expense	(32,507)	(26,234)
Other income (expense), net	46,725	3,558
Total other expense, net	18,025	(20,971)
INCOME BEFORE INCOME TAXES	114,444	67,204
PROVISION FOR INCOME TAXES	26,263	12,842
NET INCOME	$ 88,181	$ 54,362
BASIC EARNINGS PER SHARE (in dollars per share)	$ 1.71	$ 1.05
DILUTED EARNINGS PER SHARE (in dollars per share)	$ 1.69	$ 1.03
Weighted average common shares:
Basic (in shares)	51,440	51,921
Diluted (in shares)	52,098	53,033
COMPREHENSIVE INCOME:
Net income	$ 88,181	$ 54,362
Net unrealized appreciation (depreciation) on debt securities, net of taxes	32	(50)
TOTAL COMPREHENSIVE INCOME	88,213	54,312
Flying agreements
OPERATING REVENUES:
Total operating revenues	700,001	767,964
Airport customer service and other
OPERATING REVENUES:
Total operating revenues	23,693	15,436
Aircraft maintenance, materials and repairs
OPERATING EXPENSES:
Total operating expenses	118,262	141,606
Airport related expenses
OPERATING EXPENSES:
Total operating expenses	30,647	29,307
Aircraft fuel
OPERATING EXPENSES:
Total operating expenses	25,656	26,939
Aircraft rentals
OPERATING REVENUES:
Total operating revenues	207,381	189,068
OPERATING EXPENSES:
Total operating expenses	$ 20,158	$ 44,680

XML

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Common Stock	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Total
Balance at Dec. 31, 2017	$ 672,593	$ 1,516,957	$ (435,178)	$ (50)	$ 1,754,322
Balance (in shares) at Dec. 31, 2017	80,398		(28,644)
Increase (Decrease) in Stockholders' Equity
Net income		54,362			54,362
Net unrealized depreciation on marketable securities, net of taxes				(50)	(50)
Exercise of common stock options and stock issued under equity award plan	$ 836				836
Exercise of common stock options and stock issued under equity award plan (in shares)	677
Stock-based compensation expense (forfeiture credit) associated with equity awards, net	$ 4,854				4,854
Sale of common stock under employee stock purchase plan	$ 1,485				1,485
Sale of common stock under employee stock purchase plan (in shares)	30
Treasury shares acquired from vested employee stock awards for income tax withholdings			$ (10,003)		(10,003)
Treasury shares acquired from vested employee stock awards for income tax withholdings (in shares)			(238)
Treasury stock purchases			$ (13,464)		(13,464)
Treasury stock purchases (in shares)			(177)
Cash dividends declared (per share)		(5,205)			(5,205)
Balance at Mar. 31, 2018	$ 679,768	1,566,114	$ (458,645)	(100)	1,787,137
Balance (in shares) at Mar. 31, 2018	81,105		(29,059)
Increase (Decrease) in Stockholders' Equity
Change in accounting principle and other (see Note 6)		(13,141)			(13,141)
Balance at December 31, 2018, as adjusted	$ 690,910	1,763,444	$ (503,182)	(32)	1,951,140
Balance at Dec. 31, 2018	$ 690,910	1,776,585	$ (503,182)	(32)	1,964,281
Balance (in shares) at Dec. 31, 2018	81,239		(29,851)
Increase (Decrease) in Stockholders' Equity
Net income		88,181			88,181
Net unrealized depreciation on marketable securities, net of taxes				$ 32	32
Exercise of common stock options and stock issued under equity award plan	$ 641				641
Exercise of common stock options and stock issued under equity award plan (in shares)	521
Stock-based compensation expense (forfeiture credit) associated with equity awards, net	$ (578)				(578)
Sale of common stock under employee stock purchase plan	$ 1,620				1,620
Sale of common stock under employee stock purchase plan (in shares)	39
Treasury shares acquired from vested employee stock awards for income tax withholdings			$ (9,311)		(9,311)
Treasury shares acquired from vested employee stock awards for income tax withholdings (in shares)			(173)
Treasury stock purchases			$ (25,000)		(25,000)
Treasury stock purchases (in shares)			(476)
Cash dividends declared (per share)		(6,158)			(6,158)
Balance at Mar. 31, 2019	$ 692,593	$ 1,845,467	$ (537,493)		$ 2,000,567
Balance (in shares) at Mar. 31, 2019	81,799		(30,500)

XML

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY
Net unrealized appreciation on marketable securities, tax	$ 10	$ 16

XML

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
CONSOLIDATED STATEMENTS OF CASH FLOWS
NET CASH PROVIDED BY OPERATING ACTIVITIES	$ 154,914	$ 165,895
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of marketable securities	(498,113)	(387,572)
Sales of marketable securities	605,693	496,945
Proceeds from the sale of aircraft, property and equipment	43
Acquisition of property and equipment:
Aircraft and rotable spare parts	(197,341)	(198,777)
Buildings and ground equipment	(52,075)	(9,305)
Aircraft deposits applied towards acquired aircraft	4,660
Net cash received from sale of ExpressJet subsidiary	53,200
Decrease (increase) in other assets	7,028	(1,364)
NET CASH USED IN INVESTING ACTIVITIES	(76,905)	(100,073)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of long-term debt	19,940	101,317
Principal payments on long-term debt	(98,204)	(71,587)
Net proceeds from issuance of common stock	2,261	2,320
Purchase of treasury stock and employee income tax paid on equity awards	(34,311)	(23,467)
Increase in debt issuance cost	(53)	(610)
Payment of cash dividends	(5,141)	(4,140)
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	(115,508)	3,833
Increase (decrease) in cash and cash equivalents	(37,499)	69,655
Cash and cash equivalents at beginning of period	328,384	181,792
CASH AND CASH EQUIVALENTS AT END OF PERIOD	290,885	251,447
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Acquisition of rotable spare parts		574
Debt assumed on aircraft acquired under operating leases	14,475	59,132
Right of use assets applied to aircraft acquired under operating leases	150,688
Lease liability arising from the recognition of right-of-use asset	456,472
Cash paid during the period for:
Interest, net of capitalized amounts	34,288	26,481
Income taxes	1,653	$ 486
DETAILS OF SALES OF SUBSIDIARIES:
Decrease in carrying amount of assets	(101,448)
Decrease in carrying amount of liabilities	68,341
Cash received from buyers	79,632
Gain on sale of subsidiaries	$ 46,525

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Condensed Consolidated Financial Statements

3 Months Ended

Mar. 31, 2019

Condensed Consolidated Financial Statements

Condensed Consolidated Financial Statements

Note 1 — Condensed Consolidated Financial Statements

Basis of Presentation

The condensed consolidated financial statements of SkyWest, Inc. (“SkyWest” or the “Company”) and its operating subsidiary SkyWest Airlines, Inc. (“SkyWest Airlines”) and its leasing subsidiary SkyWest Leasing, Inc. (“SkyWest Leasing”) included herein have been prepared, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). On January 22, 2019, the Company completed the sale of its former wholly-owned subsidiary, ExpressJet Airlines, Inc. (“ExpressJet”).  The Company’s financial and operating results presented in this Report include the financial results of ExpressJet for the period of time ExpressJet was operating as a subsidiary of the Company.  Certain information and disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) have been condensed or omitted pursuant to such rules and regulations, although the Company believes that the following disclosures are adequate to make the information presented not misleading. These condensed consolidated financial statements reflect all adjustments that, in the opinion of management, are necessary to present fairly the results of operations for the interim periods presented. All adjustments are of a normal recurring nature, unless otherwise disclosed. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and the notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2018.  The results of operations for the three months ended March 31, 2019 are not necessarily indicative of the results that may be expected for the year ending December 31, 2019.

The preparation of financial statements in conformity with GAAP 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 will likely differ, and may differ materially, from those estimates and assumptions.

Recent Accounting Pronouncements

Recently Adopted Standards

In February 2016, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update 2016-02, “Leases (Topic 842)” (“Topic 842”). Topic 842 and subsequently issued amendments require certain leases with durations longer than 12 months to be recognized on the balance sheet. The Company adopted Topic 842 effective January 1, 2019 and elected the package of transition practical expedients for expired or existing contracts, which does not require reassessment of: (1) whether any of the Company’s contracts are or contain leases, (2) lease classification and (3) initial direct costs.  In July 2018, the FASB issued ASU No. 2018-11, "Targeted Improvements - Leases (Topic 842)." This update provides an optional transition method that allows entities to elect to apply the standard using the modified retrospective approach at its effective date, versus recasting the prior years presented. If this adoption method is elected, an entity would recognize a cumulative-effect adjustment to the opening balance of retained earnings in the year of adoption. The Company elected this adoption method and recognized a cumulative-effect adjustment to the opening balance of retained earnings on January 1, 2019.

Additionally, the Company’s adoption of Topic 842 did not have a significant impact on the recognition, measurement or presentation of lease revenue and lease expenses within the condensed consolidated statements of operations and comprehensive income or the condensed consolidated statements of cash flows. The Company’s adoption of Topic 842 did not have a material impact on the timing or amount of the Company’s lease revenue as a lessor.  The Company’s prepaid aircraft rents, accrued aircraft rents and deferred rent credits that were separately stated in the Company’s December 31, 2018 balance sheet have been classified as a component of the Company’s right-of-use assets effective January 1, 2019. The consolidated financial statements for the three months ended March 31, 2019 are presented under the new standard, while comparative years presented are not adjusted and continue to be reported in accordance with the Company’s historical accounting policy.

See Note 6, "Leases, Commitments and Contingencies," for more information.

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Flying Agreements Revenue and Airport Customer Service and Other Revenue

3 Months Ended

Mar. 31, 2019

Flying Agreements Revenue and Airport Customer Service and Other Revenue

Flying Agreements Revenue and Airport Customer Service and Other Revenue

Note 2 — Flying Agreements Revenue and Airport Customer Service and Other Revenues

The Company recognizes flying agreements revenue and airport customer service and other revenues when the service is provided under its code-share agreements. Under the Company’s fixed-fee arrangements (referred to as “fixed-fee arrangements,” “fixed-fee contracts” or “capacity purchase agreements”) with Delta Air Lines, Inc. (“Delta”), United Airlines, Inc. (“United”), American Airlines, Inc. (“American”) and Alaska Airlines, Inc. (“Alaska”) (each, a “major airline partner”), the major airline partner generally pays the Company a fixed-fee for each departure, flight hour (measured from takeoff to landing, excluding taxi time) or block hour (measured from takeoff to landing, including taxi time) incurred, and an amount per aircraft in service each month with additional incentives based on flight completion 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 airport landing fees and airport rents. Under the fixed-fee arrangements, the Company’s performance obligation is met when each flight is completed and is reflected in flying agreements revenue. The transaction price for the fixed-fee agreements is determined from the fixed-fee consideration, incentive consideration and directly reimbursed expenses earned as flights are completed over the agreement term.  For the three months ended March 31, 2019, fixed-fee arrangements represented approximately 84.8% of the Company’s flying agreements revenue.

Under the Company’s revenue-sharing arrangements (referred to as a “revenue-sharing” or “prorate” arrangement), the major airline partner and the Company negotiate a passenger fare proration formula, pursuant to which the Company receives a percentage of the ticket revenues for those passengers traveling for one portion of their trip on a Company airline and the other portion of their trip on the major airline partner.  Under the Company’s prorate flying agreements, the performance obligation is met and revenue is recognized when each flight is completed based upon the portion of the prorate passenger fare the Company anticipates that it will receive for each completed flight. The transaction price for the prorate agreements is determined from the proration formula derived from each passenger ticket amount on each completed flight over the agreement term.  For the three months ended March 31, 2019, prorate flying arrangements represented approximately 15.2% of the Company’s flying agreements revenue.

Airport customer service and other revenues primarily consist of ground handling functions, such as gate and ramp agent services at applicable airports where the Company provides such services. The transaction price for airport customer service agreements is determined from an agreed-upon rate by location applied to the applicable number of flights handled by the Company over the agreement term. Additionally, airport customer service and other revenues includes revenue generated from aircraft and spare engines leased to third parties. As of March 31, 2019, the Company leased regional jet aircraft and spare engines to third parties. Of the Company’s $5.3 billion of property and equipment, net, $23.2 million was leased to third parties under operating leases as of March 31, 2019. The Company mitigates the residual asset risks of these assets by leasing aircraft and engine types that can be operated by the Company in the event of a default. Additionally, the operating leases typically have specified lease return condition requirements paid by the lessee to the Company and the Company typically maintains inspection rights under the leases. The following table summarizes future minimum rental income under operating leases primarily related to leased aircraft that had remaining non-cancelable lease terms as of March 31, 2019 (in thousands):

April 2019 through December 2019	$	18,495
2020		13,034
2021		7,956
2022		3,125
2023		185
Thereafter		—
	$	42,795

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.

The following table represents the Company’s flying agreements revenue by type for the three-month period ended March 31, 2019 and 2018 (in thousands):

	For the three months ended March 31,
	2019		2018
Capacity purchase agreements revenue: flight operations	$	386,545	$	469,025
Capacity purchase agreements revenue: aircraft lease revenue		207,381		189,068
Prorate agreements revenue		106,075		109,871
Flying agreements revenue	$	700,001	$	767,964

A portion of the Company’s compensation under its fixed-fee agreements is designed to reimburse the Company for certain aircraft ownership costs. The consideration for aircraft ownership costs 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. The consideration received for the use of the aircraft under the Company’s fixed-fee agreements is reflected as lease revenue, inasmuch as the agreements identify the “right of use” of a specific type and number of aircraft over a stated period of time. The lease revenue associated with the Company’s fixed-fee agreements is accounted for as an operating lease and is reflected as flying agreements revenue on the Company’s consolidated statements of comprehensive income. The Company has not separately stated aircraft rental income and aircraft rental expense in the consolidated statement of comprehensive income since the use of the aircraft is not a separate activity of the total service provided.

The Company’s fixed-fee and prorate agreements include weekly provisional cash payments from the respective major airline partner based on a projected level of flying each month. The Company and each major airline partner subsequently reconcile these payments to the actual completed flight activity on a monthly or quarterly basis.  In the event a flying agreement includes a mid-term rate reset to adjust rates prospectively and the contractual rates under the Company’s flying agreements have not been finalized at quarterly or annual financial statement dates, the Company applies the variable constraint guidance under Accounting Standards Update No. 2014‑09, “Revenue from Contracts with Customers, (Topic 606)” (“Topic 606”), where the Company records revenue to the extent it believes that it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is subsequently resolved.

In several of the Company’s agreements, the Company is eligible to receive incentive compensation upon the achievement of certain performance criteria. The incentives are defined in the agreements and are measured and determined on a monthly, quarterly or semi‑annual basis. At the end of each period during the term of an agreement, the Company calculates the incentives achieved during that period and recognizes revenue attributable to that agreement accordingly, subject to the variable constraint guidance under Topic 606.

The following table summarizes the significant provisions of each code-share agreement SkyWest Airlines has with each major airline partner:

Delta Connection Agreements
Agreement	Aircraft type	Number of Aircraft	Term / Termination Dates
Delta Connection Agreement (fixed-fee arrangement)	•CRJ 200 •CRJ 700 •CRJ 900 •E175	58 18 43 50	•Individual aircraft have scheduled removal dates from 2019 to 2030
Delta Connection Prorate Agreement (revenue-sharing arrangement)	•CRJ 200	29	•Terminable with 30-day notice

United Express Agreements
Agreement	Aircraft type	Number of Aircraft	Term / Termination Dates
United Express Agreements (fixed-fee arrangement)	•CRJ 200 •CRJ 700 •E175	68 19 65	•Individual aircraft have scheduled removal dates from 2020 to 2029
United Express Prorate Agreement (revenue-sharing arrangement)	•CRJ 200	25	•Terminable with 120-day notice

American Agreements
Agreement	Aircraft type	Number of Aircraft	Term / Termination Dates
American Agreement (fixed-fee arrangement)	•CRJ 700	62	•Individual aircraft have scheduled removal dates from 2022 to 2025
American Prorate Agreement (revenue-sharing arrangement)	•CRJ 200	7	•Terminable with 120-day notice
Alaska Capacity Purchase Agreement
Agreement	Aircraft type	Number of Aircraft		Term / Termination Dates
Alaska Agreement (fixed-fee arrangement)	•E175	32		•Individual aircraft have scheduled removal dates from 2027 to 2030

In addition to the contractual arrangements described above, SkyWest Airlines has entered into fixed-fee agreements with Alaska and Delta to place additional Embraer E175 dual-class regional jet aircraft (“E175”) into service.  As of March 31, 2019, the Company was scheduled to take delivery of eight E175 aircraft in connection with its agreement with Delta (four aircraft in 2019 and four aircraft in 2020) and three E175 aircraft in 2021 in connection with its agreement with Alaska. Final delivery dates may be adjusted based on various factors.

SkyWest Airlines also entered into an agreement with Delta in the second quarter of 2018 to operate 20 Canadair CRJ900 regional jet aircraft (“CRJ900”) aircraft under a fixed-fee agreement. As of March 31, 2019, SkyWest Airlines had placed eight of these CRJ900 aircraft into service with Delta. The delivery dates for the remaining 12 aircraft are expected to continue through the end of 2020. The remaining 12 new CRJ900 aircraft will replace 12 Canadair CRJ700 regional jet aircraft (“CRJ700”) scheduled to expire under SkyWest’s flying contracts with Delta.

When an aircraft is scheduled to be removed from a fixed-fee arrangement, the Company may, as practical under the circumstances, negotiate an extension with the respective major airline partner, negotiate the placement of the aircraft with another major airline partner, return the aircraft to the lessor if the aircraft is leased and the lease is expiring, place owned aircraft for sale, or pursue other uses for the aircraft. Other uses for the aircraft may include placing the aircraft in a prorate arrangement, leasing the aircraft to a third party or parting out the aircraft to use the engines and parts as spare inventory or to lease the engines to a third party.

The Company’s operating revenues could be impacted by a number of factors, including changes to the Company’s code-share agreements with its major airline partners, contract modifications resulting from contract renegotiations, 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 airline partners.

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Share-Based Compensation and Stock Repurchases

3 Months Ended

Mar. 31, 2019

Share-Based Compensation and Stock Repurchases

Share-Based Compensation and Stock Repurchases

Note 3 — Share-Based Compensation and Stock Repurchases

During the three months ended March 31, 2019, the Company granted 101,400 restricted stock units and 83,784 performance shares to certain employees of the Company and its subsidiaries under the SkyWest, Inc. 2010 Long-Term Incentive Plan.  Both the restricted stock units and performance shares have a three-year vesting period, during which the recipient must remain employed with the Company or one of the Company’s subsidiaries. The number of performance shares awardable from the 2019 grants can range from 0% to 200% of the original amount granted depending on the Company’s performance over the three-year vesting period against the pre-established targets. Upon vesting, each restricted stock unit and performance share will be replaced with one share of common stock. The fair value of the restricted stock units and performance shares on the date of grant was $48.45 per share. During the three months ended March 31, 2019, the Company did not grant any options to purchase shares of common stock.  Additionally, during the three months ended March 31, 2019, the Company granted 18,576 fully-vested shares of common stock to the Company’s directors at a grant date fair value of $48.45.

The Company accounts for forfeitures of stock options, restricted stock units and performance share grants in 2019 when forfeitures occur.  The estimated fair value of the stock options, restricted stock units and performance shares is amortized over the applicable vesting periods.  During the three months ended March 31, 2019 and 2018, the Company recorded pre-tax share-based compensation expense of $3.9 million and $4.9 million, respectively.  Additionally, the Company incurred $7.9 million of employee severance related costs associated with the sale of ExpressJet, partially offset by a forfeiture credit of $4.5 million, primarily resulting from stock-based compensation awards that terminated upon the sale of ExpressJet during the three months ended March 31, 2019.

The Company repurchased 476,277 shares of its common stock for $25.0 million, and paid $9.3 million for the income tax obligation on vested employee equity awards and issued the net, after-tax shares to employees during the three months ended March 31, 2019. The Company repurchased 177,580 shares of its common stock for $10.0 million and paid $13.5 million for the income tax obligation on vested employee equity awards and issued the net, after-tax shares to employees during the three months ended March 31, 2018.

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Net Income Per Common Share

3 Months Ended

Mar. 31, 2019

Net Income Per Common Share

Net Income Per Common Share

Note 4 — Net Income Per Common Share

Basic net income per common share (“Basic EPS”) excludes dilution and is computed by dividing net income by the weighted average number of common shares outstanding during the period. Diluted net income 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 per common share. During the three months ended March 31, 2019, 241,000 performance shares (at target performance) were excluded from the computation of Diluted EPS since the Company had not achieved the minimum target thresholds as of March 31, 2019. During the three months ended March 31, 2018, 372,600 performance shares (at target performance) were excluded from the computation of Diluted EPS since the Company had not achieved the minimum target thresholds as of March 31, 2018.

The calculation of the weighted average number of shares of common stock outstanding for Basic EPS and Diluted EPS for the periods indicated (in thousands, except per share data) is as follows:

	Three Months Ended
	March 31,
	2019		2018
Numerator:
Net Income	$	88,181	$	54,362
Denominator:
Weighted average number of common shares outstanding		51,440		51,921
Effect of outstanding share-based awards		658		1,112
Weighted average number of shares for diluted net income per common share		52,098		53,033
Basic earnings per share	$	1.71	$	1.05
Diluted earnings per share	$	1.69	$	1.03

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Segment Reporting

3 Months Ended

Mar. 31, 2019

Segment Reporting

Segment Reporting

Note 5 - Segment Reporting

The Company’s three reporting segments consisted of the operations of SkyWest Airlines, ExpressJet and SkyWest Leasing activities. The Company sold ExpressJet on January 22, 2019.  The segment information for ExpressJet reflects the period of time ExpressJet was operating as a subsidiary of the Company.  The Company concluded that the sale of ExpressJet did not meet the criteria for a discontinued operation.

The Company’s chief operating decision maker analyzes the profitability of operating new aircraft financed through the issuance of debt, including the Company’s E175 fleet, separately from the profitability of the Company’s capital deployed for ownership and financing of such aircraft. The SkyWest Leasing segment includes applicable revenue earned under the applicable fixed-fee contracts attributed to the ownership of new aircraft acquired through the issuance of debt and the respective depreciation and interest expense of such aircraft. The SkyWest Airlines segment includes revenue earned under the applicable fixed-fee contracts attributed to operating such aircraft and the respective operating costs. The SkyWest Leasing segment includes the activity of leasing regional jet aircraft and spare engines to third parties. The SkyWest Leasing segment’s total assets and capital expenditures include new aircraft acquired through the issuance of debt and assets leased to third parties.

The following represents the Company’s segment data for the three-month periods ended March 31, 2019 and 2018 (in thousands):

	Three months ended  March 31, 2019
	SkyWest				SkyWest
	Airlines		ExpressJet		Leasing		Consolidated
Operating revenues (1)	$	585,768	$	24,050	$	113,876	$	723,694
Operating expense		545,901		28,690		52,684		627,275
Depreciation and amortization expense		40,053		971		48,962		89,986
Special Items		18,508		3,361		—		21,869
Interest expense		3,818		—		28,689		32,507
Segment profit (loss) (2)		36,049		(4,640)		32,503		63,912
Total assets (as of March 31, 2019)		2,738,248		—		3,806,284		6,544,532
Capital expenditures (including non-cash)		68,650		—		345,929		414,579

	Three months ended  March 31, 2018
	SkyWest				SkyWest
	Airlines		ExpressJet		Leasing		Consolidated
Operating revenues (1)	$	556,294	$	161,081	$	66,025	$	783,400
Operating expense		498,875		166,824		29,526		695,225
Depreciation and amortization expense		37,487		11,161		28,937		77,585
Interest expense		4,476		827		20,931		26,234
Segment profit (loss) (2)		52,943		(6,570)		15,568		61,941
Identifiable intangible assets, other than goodwill		—		3,672		—		3,672
Total assets (as of March 31, 2018)		2,184,306		581,722		2,834,159		5,600,187
Capital expenditures (including non-cash)		36,283		1,338		230,167		267,788

(1) Prorate revenue, Airport customer service and other revenues is primarily reflected in the SkyWest Airlines segment.

(2) Segment profit (loss) is equal to operating income less interest expense.

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Leases, Commitments and Contingencies

3 Months Ended

Mar. 31, 2019

Leases, Commitments and Contingencies

Leases, Commitments and Contingencies

Note 6 — Leases, Commitments and Contingencies

Effective January 1, 2019, the Company adopted Topic 842. The Company leases property and equipment under operating leases. For leases with durations longer than 12 months, the Company recorded the related asset and obligation at the present value of lease payments over the term.  The Company used its incremental borrowing rate to discount the lease payments based on information available at lease commencement.

Aircraft

During the three months ended March 31, 2019, the Company acquired 52 CRJ aircraft under an early lease buyout arrangement with the lessor for $111.7 million.  As of March 31, 2019, the Company had 89 aircraft under operating leases with remaining terms ranging from less than oneyear to nine years.

With the adoption of Topic 842, the Company evaluated whether leased aircraft asset groups within the Company’s fleet were impaired. Under the transition guidance for Topic 842, a company is permitted to recognize a previously unrecognized impairment related to a right-of-use asset in the period prior to the adoption date of Topic 842 if the event giving rise to the impairment occurred before the adoption date. In 2016, the Company recorded an impairment on certain of its long-lived assets, which included the Company’s 50-seat Bombardier CRJ200 regional jet aircraft (“CRJ200”). In 2016, the market lease rate was less than the contractual lease rate on the Company’s CRJ200 leased aircraft.  The Company recorded an impairment of $13.1 million (net of tax) as an adjustment to the Company’s January 1, 2019 retained earnings related to the previously unrecognized impairment of these leased CRJ200s.

Airport facilities

The Company has operating leases for facility space including airport terminals, office space, cargo warehouses and maintenance facilities. The Company generally leases this space from government agencies that control the use of the airport. The remaining lease terms vary from one month to 37 years. The Company’s operating leases with lease rates that are variable based on airport operating costs, use of the facilities or other variable factors are excluded from the Company’s right-of-use assets and operating lease liabilities in accordance with accounting guidance.

Leases

As of March 31, 2019, the Company’s right-of-use assets were $341.9 million, the Company’s current maturities of operating lease liabilities were $73.5 million, and the Company’s noncurrent lease liabilities were $275.1 million. During the three months ended March 31, 2019, the Company had operating cash flows from operating leases of $19.7 million.

The table below presents lease related terms and discount rates as of March 31, 2019.

	March 31, 2019
Weighted-average remaining lease term
Operating leases		7.0 years
Weighted-average discount rate
Operating leases		6.4%

The Company’s lease costs for the periods indicated included the following components (in thousands):

	For the three months ended March 31,
	2019		2018		$ Change		% Change
Operating lease cost	$	27,221	$	52,833	$	(25,612)	(48.5)	%
Variable and short-term lease cost		1,475		1,419		56	3.9	%
Total lease cost	$	28,696	$	54,252	$	(25,556)	(47.1)	%

As of March 31, 2019, the Company leased aircraft, airport facilities, office space, and other property and equipment under non-cancelable operating leases which are generally on a long-term, triple net lease basis pursuant to which the Company pays taxes, maintenance, insurance and certain other operating expenses applicable to the leased property.  The Company expects that, in the normal course of business, such operating leases that expire will be renewed or replaced by other leases, or the property may be purchased rather than leased. The following table summarizes future minimum rental payments primarily related to leased aircraft required under operating leases that had initial or remaining non-cancelable lease terms as of March 31, 2019 (in thousands):

April 2019 through December 2019	$	54,799
2020		93,640
2021		75,898
2022		67,668
2023		62,498
Thereafter		87,591
	$	442,094

As of March 31, 2019, the Company had a firm purchase commitment for eleven E175 aircraft from Embraer, S.A. with scheduled delivery dates through 2021.

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

	Total		Apr - Dec 2019		2020		2021		2022		2023		Thereafter
Operating lease payments for aircraft and facility obligations	$	442,094	$	54,799	$	93,640	$	75,898	$	67,668	$	62,498	$	87,591
Firm aircraft and spare engine commitments		329,327		139,974		131,657		57,696		—		—		—
Interest commitments (1)		628,528		95,377		114,048		98,884		84,754		68,950		166,515
Principal maturities on long-term debt		3,121,661		279,873		357,228		339,297		352,717		361,215		1,431,331
Total commitments and obligations	$	4,521,610	$	570,023	$	696,573	$	571,775	$	505,139	$	492,663	$	1,685,437

(1) At March 31, 2019, the Company had variable rate notes representing only 0.2% of its total long-term debt. 

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Fair Value Measurements

3 Months Ended

Mar. 31, 2019

Fair Value Measurements

Fair Value Measurements

Note 7 — Fair Value Measurements

The Company holds certain assets that are required to be measured at fair value in accordance with GAAP. The Company determined the 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 March 31, 2019 and December 31, 2018, 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 March 31, 2019
	Total		Level 1		Level 2		Level 3
Cash, Cash Equivalents	$	290,885	$	290,885	$	—	$	—
Marketable Securities
Bonds and bond funds	$	154,407	$	—	$	154,407	$	—
Commercial paper		98,990		—		98,990		—
		253,397		—		253,397		—
Total Assets Measured at Fair Value	$	544,282	$	290,885	$	253,397	$	—

	Fair Value Measurements as of December 31, 2018
	Total		Level 1		Level 2		Level 3
Cash, Cash Equivalents	$	328,384	$	328,384	$	—	$	—
Marketable Securities
Bonds and bond funds	$	229,783	$	—	$	229,783	$	—
Commercial paper		131,162		—		131,162		—
		360,945		—		360,945		—
Total Assets Measured at Fair Value	$	689,329	$	328,384	$	360,945	$	—

The Company’s “marketable securities” classified as Level 2 securities primarily utilize broker quotes in a non-active market for valuation of these securities.

The Company did not make any significant transfers of securities between Level 1, Level 2 and Level 3 during the three months ended March 31, 2019.  The Company’s policy regarding the recording of transfers between levels is to record any such transfers at the end of the reporting period.

As of March 31, 2019 and December 31, 2018, the Company classified $253.4  million and $360.9 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.  As of March 31, 2019 and December 31, 2018, the cost of the Company’s total cash and cash equivalents and available for sale securities was $544.2 million and $689.4 million, respectively.

The fair value of the Company’s long-term debt classified as Level 2 debt was estimated using discounted cash flow analyses, based on the Company’s current estimated incremental borrowing rates for similar types of borrowing arrangements. 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 estimated to be $3.10 billion as of March 31, 2019 and $3.16 billion as of December 31, 2018, as compared to the carrying amount of $3.12 billion as of March 31, 2019 and $3.19 billion as of December 31, 2018.

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Long-Term Debt

3 Months Ended

Mar. 31, 2019

Long-Term Debt

Long-Term Debt

Note 8 — Long-Term Debt

Long-term debt consisted of the following as of March 31, 2019 and December 31, 2018 (in thousands):

	March 31, 2019		December 31, 2018
Current portion of long-term debt	$	366,583	$	354,072
Current portion of unamortized debt issue cost, net		(3,786)		(3,866)
Current portion of long-term debt, net of debt issue costs	$	362,797	$	350,206
Long-term debt, net of current maturities	$	2,755,078	$	2,831,366
Long-term portion of unamortized debt issue cost, net		(20,761)		(21,598)
Long-term debt, net of current maturities and debt issue costs	$	2,734,317	$	2,809,768
Total long-term debt (including current portion)	$	3,121,661	$	3,185,438
Total unamortized debt issue cost, net		(24,547)		(25,464)
Total long-term debt, net of debt issue costs	$	3,097,114	$	3,159,974

During the three months ended March 31, 2019, the Company took delivery of one E175 aircraft that the Company financed through $19.9 million of long-term debt. Additionally, the Company purchased two previously-leased aircraft, for which the Company assumed $14.5 million of long-term debt.  The debt associated with the one E175 aircraft has a 12-year term, is due in quarterly installments with a fixed annual interest rate of 3.9% and is secured by the E175 aircraft. The Company acquired two aircraft pursuant to the acquisition of debt under the existing leases during the three months ended March 31, 2019. The debt associated with the two previously-leased aircraft has a term of 18 months with monthly interest only payments with a fixed annual interest rate of 2.0% and is secured by the previously-leased aircraft.

As of March 31, 2019 and December 31, 2018, the Company had $80.0 million and $78.7 million, respectively, in letters of credit and surety bonds outstanding with various banks and surety institutions.

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Gain on Sale

3 Months Ended

Mar. 31, 2019

Gain on Sale

Gain on Sale

Note 9 — Gain on Sale

ExpressJet Sale

On January 22, 2019, the Company completed the sale of its former wholly-owned subsidiary ExpressJet. The Company recorded a gain of $46.6 million (pre-tax) from the sale of ExpressJet. The closing of the transaction was completed in two parts, through an asset sale and stock sale, as further described below.

Asset Sale

On January 11, 2019, pursuant to the terms and conditions of the Asset Purchase Agreement, dated as of December 17, 2018, by and among the Company, ExpressJet and United, United acquired certain specified assets and liabilities of ExpressJet, including, among other things, aircraft engines, auxiliary power units, rotable spare parts, ground support equipment and flight training equipment for $60.8 million in cash, subject to certain purchase price adjustments (the “Asset Sale”). Certain assets and liabilities of ExpressJet were expressly excluded from the Asset Sale.

Stock Sale

Additionally, on January 22, 2019, pursuant to the terms and conditions of the Stock Purchase Agreement, dated as of December 17, 2018, by and among the Company and ManaAir, LLC, a company in which United owns a minority interest (the “Buyer”), the Buyer acquired all of the outstanding shares of capital stock of ExpressJet from the Company for $18.8 million in cash, subject to certain purchase price adjustments (the “Stock Sale,”). To facilitate payment of the purchase price for the Stock Sale, at the closing of the Stock Sale, the Company loaned $26 million to Kair Enterprises, Inc. (the “Borrower”), the majority owner of the Buyer.  Such loan accrues interest at the rate of 6.85% per annum, matures on the last business day of the last month immediately preceding the two-year anniversary of the closing of the Stock Sale and is secured by, among other things, the Borrower’s ownership interests in the Buyer. The Company also agreed to lease 16 CRJ200 aircraft to ExpressJet for up to a five-year term as part of the transaction.

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Special Items

3 Months Ended

Mar. 31, 2019

Special Items

Special Items

Note 10 — Special Items

During the three months ended March 31, 2019, the Company terminated an agreement with an aircraft manufacturer that obligated the Company to future aircraft lease return conditions on aircraft the Company leased.  In conjunction with the terminated agreement, the aircraft manufacturer released the Company from the future aircraft lease return obligations and the Company agreed to terminate aircraft part credits previously issued by the manufacturer to the Company.  As a result of the terminated agreement, the Company recorded a non-cash expense of $18.5 million (pre-tax) during the three months ended March 31, 2019 to write-off the terminated aircraft part credits, which was reflected as a special items operating expense in the consolidated statement of comprehensive income.

Additionally, during the three months ended March 31, 2019, the Company incurred $3.4 million of employee severance related costs associated with the sale of ExpressJet that are also reflected in special items.

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Income Taxes

3 Months Ended

Mar. 31, 2019

Income Taxes

Income Taxes

Note 11 — Income Taxes

The Company’s effective tax rate for the three months ended March 31, 2019 was 23.0%. The Company’s effective tax rate for the three months ended March 31, 2019 varied from the federal statutory rate of 21.0% primarily due to the provision for state income taxes and the impact of non-deductible expenses, partially offset by a $2.3 million discrete tax benefit from excess tax deductions generated from employee equity transactions that occurred during the three months ended March 31, 2019.

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Legal Matters

3 Months Ended

Mar. 31, 2019

Legal Matters

Legal Matters

Note 12 — Legal Matters

The Company is subject to certain legal actions which it considers routine to its business activities. As of March 31, 2019, the Company’s 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.

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Flying Agreements Revenue and Airport Customer Service and Other Revenue (Tables)

3 Months Ended

Mar. 31, 2019

Agreements with other airlines

Schedule of future minimum rental payments for operating leases

The following table summarizes future minimum rental payments primarily related to leased aircraft required under operating leases that had initial or remaining non-cancelable lease terms as of March 31, 2019 (in thousands):

April 2019 through December 2019	$	54,799
2020		93,640
2021		75,898
2022		67,668
2023		62,498
Thereafter		87,591
	$	442,094

Schedule of flying agreement revenue data

The following table represents the Company’s flying agreements revenue by type for the three-month period ended March 31, 2019 and 2018 (in thousands):

	For the three months ended March 31,
	2019		2018
Capacity purchase agreements revenue: flight operations	$	386,545	$	469,025
Capacity purchase agreements revenue: aircraft lease revenue		207,381		189,068
Prorate agreements revenue		106,075		109,871
Flying agreements revenue	$	700,001	$	767,964

Schedule of details of agreements with other airlines

The following table summarizes the significant provisions of each code-share agreement SkyWest Airlines has with each major airline partner:

Delta Connection Agreements
Agreement	Aircraft type	Number of Aircraft	Term / Termination Dates
Delta Connection Agreement (fixed-fee arrangement)	•CRJ 200 •CRJ 700 •CRJ 900 •E175	58 18 43 50	•Individual aircraft have scheduled removal dates from 2019 to 2030
Delta Connection Prorate Agreement (revenue-sharing arrangement)	•CRJ 200	29	•Terminable with 30-day notice

United Express Agreements
Agreement	Aircraft type	Number of Aircraft	Term / Termination Dates
United Express Agreements (fixed-fee arrangement)	•CRJ 200 •CRJ 700 •E175	68 19 65	•Individual aircraft have scheduled removal dates from 2020 to 2029
United Express Prorate Agreement (revenue-sharing arrangement)	•CRJ 200	25	•Terminable with 120-day notice

American Agreements
Agreement	Aircraft type	Number of Aircraft	Term / Termination Dates
American Agreement (fixed-fee arrangement)	•CRJ 700	62	•Individual aircraft have scheduled removal dates from 2022 to 2025
American Prorate Agreement (revenue-sharing arrangement)	•CRJ 200	7	•Terminable with 120-day notice
Alaska Capacity Purchase Agreement
Agreement	Aircraft type	Number of Aircraft		Term / Termination Dates
Alaska Agreement (fixed-fee arrangement)	•E175	32		•Individual aircraft have scheduled removal dates from 2027 to 2030

Aircraft

Agreements with other airlines

Schedule of future minimum rental payments for operating leases

The following table summarizes future minimum rental income under operating leases primarily related to leased aircraft that had remaining non-cancelable lease terms as of March 31, 2019 (in thousands):

April 2019 through December 2019	$	18,495
2020		13,034
2021		7,956
2022		3,125
2023		185
Thereafter		—
	$	42,795

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Net Income Per Common Share (Tables)

3 Months Ended

Mar. 31, 2019

Net Income Per Common Share

Schedule of net income per common share

The calculation of the weighted average number of shares of common stock outstanding for Basic EPS and Diluted EPS for the periods indicated (in thousands, except per share data) is as follows:

	Three Months Ended
	March 31,
	2019		2018
Numerator:
Net Income	$	88,181	$	54,362
Denominator:
Weighted average number of common shares outstanding		51,440		51,921
Effect of outstanding share-based awards		658		1,112
Weighted average number of shares for diluted net income per common share		52,098		53,033
Basic earnings per share	$	1.71	$	1.05
Diluted earnings per share	$	1.69	$	1.03

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Segment Reporting (Tables)

3 Months Ended

Mar. 31, 2019

Segment Reporting

Schedule of Company's segment data

The following represents the Company’s segment data for the three-month periods ended March 31, 2019 and 2018 (in thousands):

	Three months ended  March 31, 2019
	SkyWest				SkyWest
	Airlines		ExpressJet		Leasing		Consolidated
Operating revenues (1)	$	585,768	$	24,050	$	113,876	$	723,694
Operating expense		545,901		28,690		52,684		627,275
Depreciation and amortization expense		40,053		971		48,962		89,986
Special Items		18,508		3,361		—		21,869
Interest expense		3,818		—		28,689		32,507
Segment profit (loss) (2)		36,049		(4,640)		32,503		63,912
Total assets (as of March 31, 2019)		2,738,248		—		3,806,284		6,544,532
Capital expenditures (including non-cash)		68,650		—		345,929		414,579

	Three months ended  March 31, 2018
	SkyWest				SkyWest
	Airlines		ExpressJet		Leasing		Consolidated
Operating revenues (1)	$	556,294	$	161,081	$	66,025	$	783,400
Operating expense		498,875		166,824		29,526		695,225
Depreciation and amortization expense		37,487		11,161		28,937		77,585
Interest expense		4,476		827		20,931		26,234
Segment profit (loss) (2)		52,943		(6,570)		15,568		61,941
Identifiable intangible assets, other than goodwill		—		3,672		—		3,672
Total assets (as of March 31, 2018)		2,184,306		581,722		2,834,159		5,600,187
Capital expenditures (including non-cash)		36,283		1,338		230,167		267,788

(1) Prorate revenue, Airport customer service and other revenues is primarily reflected in the SkyWest Airlines segment.

Segment profit (loss) is equal to operating income less interest expense.

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Leases, Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2019

Leases, Commitments and Contingencies

Summary of related terms and discount rates

The table below presents lease related terms and discount rates as of March 31, 2019.

	March 31, 2019
Weighted-average remaining lease term
Operating leases		7.0 years
Weighted-average discount rate
Operating leases		6.4%

Summary of lease costs

The Company’s lease costs for the periods indicated included the following components (in thousands):

	For the three months ended March 31,
	2019		2018		$ Change		% Change
Operating lease cost	$	27,221	$	52,833	$	(25,612)	(48.5)	%
Variable and short-term lease cost		1,475		1,419		56	3.9	%
Total lease cost	$	28,696	$	54,252	$	(25,556)	(47.1)	%

Schedule of future minimum rental payments for operating leases

The following table summarizes future minimum rental payments primarily related to leased aircraft required under operating leases that had initial or remaining non-cancelable lease terms as of March 31, 2019 (in thousands):

April 2019 through December 2019	$	54,799
2020		93,640
2021		75,898
2022		67,668
2023		62,498
Thereafter		87,591
	$	442,094

Summary of commitments and obligations

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

	Total		Apr - Dec 2019		2020		2021		2022		2023		Thereafter
Operating lease payments for aircraft and facility obligations	$	442,094	$	54,799	$	93,640	$	75,898	$	67,668	$	62,498	$	87,591
Firm aircraft and spare engine commitments		329,327		139,974		131,657		57,696		—		—		—
Interest commitments (1)		628,528		95,377		114,048		98,884		84,754		68,950		166,515
Principal maturities on long-term debt		3,121,661		279,873		357,228		339,297		352,717		361,215		1,431,331
Total commitments and obligations	$	4,521,610	$	570,023	$	696,573	$	571,775	$	505,139	$	492,663	$	1,685,437

(1) At March 31, 2019, the Company had variable rate notes representing only 0.2% of its total long-term debt. 

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Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2019

Fair Value Measurements

Schedule of assets 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 March 31, 2019
	Total		Level 1		Level 2		Level 3
Cash, Cash Equivalents	$	290,885	$	290,885	$	—	$	—
Marketable Securities
Bonds and bond funds	$	154,407	$	—	$	154,407	$	—
Commercial paper		98,990		—		98,990		—
		253,397		—		253,397		—
Total Assets Measured at Fair Value	$	544,282	$	290,885	$	253,397	$	—

	Fair Value Measurements as of December 31, 2018
	Total		Level 1		Level 2		Level 3
Cash, Cash Equivalents	$	328,384	$	328,384	$	—	$	—
Marketable Securities
Bonds and bond funds	$	229,783	$	—	$	229,783	$	—
Commercial paper		131,162		—		131,162		—
		360,945		—		360,945		—
Total Assets Measured at Fair Value	$	689,329	$	328,384	$	360,945	$	—

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Long-Term Debt (Tables)

3 Months Ended

Mar. 31, 2019

Long-Term Debt

Schedule of long-term debt

Long-term debt consisted of the following as of March 31, 2019 and December 31, 2018 (in thousands):

	March 31, 2019		December 31, 2018
Current portion of long-term debt	$	366,583	$	354,072
Current portion of unamortized debt issue cost, net		(3,786)		(3,866)
Current portion of long-term debt, net of debt issue costs	$	362,797	$	350,206
Long-term debt, net of current maturities	$	2,755,078	$	2,831,366
Long-term portion of unamortized debt issue cost, net		(20,761)		(21,598)
Long-term debt, net of current maturities and debt issue costs	$	2,734,317	$	2,809,768
Total long-term debt (including current portion)	$	3,121,661	$	3,185,438
Total unamortized debt issue cost, net		(24,547)		(25,464)
Total long-term debt, net of debt issue costs	$	3,097,114	$	3,159,974

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Flying Agreements and Airport Customer Service and Other Revenues (Details) $ in Thousands	3 Months Ended			12 Months Ended	21 Months Ended
	Mar. 31, 2019 USD ($) aircraft	Jun. 30, 2018 aircraft	Mar. 31, 2018 USD ($)	Dec. 31, 2016 item	Dec. 31, 2020 aircraft	Dec. 31, 2018 USD ($)
Agreements with other airlines
Percentage of ASMs flown under fixed-fee arrangements	84.80%
Percentage of ASMs flown under pro-rate arrangements	15.20%
Revenues [Abstract]
Operating revenues | $	$ 723,694		$ 783,400
future minimum rental income
April 2019 through December 2019 | $	18,495
2020 | $	13,034
2021 | $	7,956
2022 | $	3,125
2023 | $	185
Total | $	42,795
Property and equipment and related assets | $	$ 5,274,568					$ 5,005,744
Sky West Airlines Inc | Delta Connection Prorate Agreement
future minimum rental income
Number of aircraft	29
Term of agreement	30 days
Sky West Airlines Inc | United Express Prorate Agreement
future minimum rental income
Number of aircraft	25
Term of agreement	120 days
Sky West Airlines Inc | American Capacity Purchase Agreement
future minimum rental income
Number of aircraft	62
Sky West Airlines Inc | American Prorate Agreement
future minimum rental income
Term of agreement	120 days
Third Party Lease
future minimum rental income
Property and equipment and related assets | $	$ 23,200
CRJ 200
future minimum rental income
Number of seats on aircraft | item				50
CRJ 200 | Sky West Airlines Inc | Delta Connection Agreement
future minimum rental income
Number of aircraft	58
CRJ 200 | Sky West Airlines Inc | United Express Agreements
future minimum rental income
Number of aircraft	68
CRJ 200 | Sky West Airlines Inc | American Prorate Agreement
future minimum rental income
Number of aircraft	7
CRJ 700 | Sky West Airlines Inc | Delta Connection Agreement
future minimum rental income
Number of aircraft	18
CRJ 700 | Sky West Airlines Inc | United Express Agreements
future minimum rental income
Number of aircraft	19
CRJ 700 | Sky West Airlines Inc | American Capacity Purchase Agreement
future minimum rental income
Number of aircraft	62
CRJ 900 | Delta Connection Agreement
future minimum rental income
Number of aircraft	8	20
CRJ 900 | Forecast | Delta Connection Agreement
future minimum rental income
Number of aircraft					12
CRJ 900 | Sky West Airlines Inc | Delta Connection Agreement
future minimum rental income
Number of aircraft	43
E 175 | Sky West Airlines Inc
future minimum rental income
Number of aircraft within one year 2019	4
Number of aircraft within two year 2020	4
E 175 | Sky West Airlines Inc | Delta Connection Agreement
future minimum rental income
Number of aircraft	50
Number of aircrafts to be placed in service	8
E 175 | Sky West Airlines Inc | United Express Agreements
future minimum rental income
Number of aircraft	65
E 175 | Sky West Airlines Inc | Alaska Capacity Purchase Agreement
future minimum rental income
Number of aircraft	32
Number of aircrafts to be placed in service	3
Flying agreements
Revenues [Abstract]
Operating revenues | $	$ 700,001		767,964
Flight operations
Revenues [Abstract]
Operating revenues | $	386,545		469,025
Aircraft rentals
Revenues [Abstract]
Operating revenues | $	207,381		189,068
Prorate agreements
Revenues [Abstract]
Operating revenues | $	$ 106,075		$ 109,871

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Share-Based Compensation and Stock Repurchases (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Share-Based Compensation
Upon vesting, each restricted stock unit and performance share replaced with common stock	1.00%
Stock based compensation expense	$ 3.9	$ 4.9
Employee severance related costs	7.9
Forfeiture credit	$ 4.5
Common stock repurchased (in shares)	476,277	177,580
Common stock repurchased, value	$ 25.0	$ 10.0
Payment of income tax obligation on employee equity awards	$ 9.3	$ 13.5
Restricted stock units
Share-Based Compensation
Granted (in dollars per share)	$ 48.45
Restricted stock units | Long Term Incentive Plan 2010
Share-Based Compensation
Granted (in shares)	101,400
Vesting period	3 years
Performance stock units | Long Term Incentive Plan 2010
Share-Based Compensation
Granted (in shares)	83,784
Vesting period	3 years
Performance stock units | Minimum | Long Term Incentive Plan 2010
Share-Based Compensation
Percentage number of performance shares awarded	0.00%
Performance stock units | Maximum | Long Term Incentive Plan 2010
Share-Based Compensation
Percentage number of performance shares awarded	200.00%
Director
Share-Based Compensation
Granted (in shares)	18,576
Granted (in dollars per share)	$ 48.45

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Net Income Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Net Income Per Common Share
Number of outstanding units not included in computation of Diluted EPS (in shares)	241,000	372,600
Numerator
Net Income	$ 88,181	$ 54,362
Denominator
Weighted average number of common shares outstanding	51,440,000	51,921,000
Effect of outstanding share-based awards	658,000	1,112,000
Weighted average number of shares for diluted net income per common share	52,098,000	53,033,000
Basic earnings per share (in dollars per share)	$ 1.71	$ 1.05
Diluted earnings per share (in dollars per share)	$ 1.69	$ 1.03

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Segment Reporting (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($) segment	Mar. 31, 2018 USD ($)	Dec. 31, 2018 USD ($)
Segment Reporting
Number of operating segments | segment	3
Operating revenues	$ 723,694	$ 783,400
Operating expense	627,275	695,225
Depreciation and amortization expense	89,986	77,585
Special items	21,869
Interest expense	32,507	26,234
Segment profit (loss)	114,444	67,204
Identifiable intangible assets, other than goodwill		3,672
Total assets	6,544,532	5,600,187	$ 6,313,212
Capital expenditures (including non-cash)	414,579	267,788
Segments
Segment Reporting
Segment profit (loss)	63,912	61,941
SkyWest Airlines
Segment Reporting
Operating revenues	585,768	556,294
Operating expense	545,901	498,875
Depreciation and amortization expense	40,053	37,487
Special items	18,508
Interest expense	3,818	4,476
Total assets	2,738,248	2,184,306
Capital expenditures (including non-cash)	68,650	36,283
SkyWest Airlines | Segments
Segment Reporting
Segment profit (loss)	36,049	52,943
ExpressJet Airlines Inc
Segment Reporting
Operating revenues	24,050	161,081
Operating expense	28,690	166,824
Depreciation and amortization expense	971	11,161
Special items	3,361
Interest expense		827
Identifiable intangible assets, other than goodwill		3,672
Total assets		581,722
Capital expenditures (including non-cash)		1,338
ExpressJet Airlines Inc | Segments
Segment Reporting
Segment profit (loss)	(4,640)	(6,570)
SkyWest Leasing
Segment Reporting
Operating revenues	113,876	66,025
Operating expense	52,684	29,526
Depreciation and amortization expense	48,962	28,937
Interest expense	28,689	20,931
Total assets	3,806,284	2,834,159
Capital expenditures (including non-cash)	345,929	230,167
SkyWest Leasing | Segments
Segment Reporting
Segment profit (loss)	$ 32,503	$ 15,568

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Leases, Commitments and Contingencies - Leases (Details) $ in Thousands		3 Months Ended		12 Months Ended
	Jan. 01, 2019 USD ($)	Mar. 31, 2019 USD ($) aircraft	Mar. 31, 2018 USD ($)	Dec. 31, 2016 item	Dec. 31, 2018 USD ($)
Lessee, Lease, Description [Line Items]
Number of aircraft leased | aircraft		89
Transition adjustment, net of tax					$ (13,141)
Operating lease right-of-use assets		$ 341,898
Current maturities of lease liabilities		73,524
Noncurrent operating leases		275,088
Operating leases		$ 19,700
Weighted-average remaining lease term: Operating leases		7 years
Weighted-average discount rate: Operating leases		6.40%
Lease costs
Operating lease cost		$ 27,221	$ 52,833
Variable and short-term lease cost		1,475	1,419
Lease, Cost, Total		28,696	$ 54,252
Operating Lease Cost, Change		(25,612)
Variable and short-term lease cost, change		56
Total lease cost, change		$ (25,556)
Operating lease cost, change (as a percent)		(48.50%)
Variable and short-term lease cost, change (as a percent)		3.90%
Percentage of change in total lease cost.		(47.10%)
CRJ 200
Lessee, Lease, Description [Line Items]
Number of seats on aircraft | item				50
Aircraft
Lessee, Lease, Description [Line Items]
Number of aircraft acquired | aircraft		52
Payments for acquired aircraft		$ 111,700
Impairment adjustment on retained earnings	$ 13,100
Aircraft | Minimum
Lessee, Lease, Description [Line Items]
Remaining lease term		1 year
Aircraft | Maximum
Lessee, Lease, Description [Line Items]
Remaining lease term		9 years
Airport Facilities | Minimum
Lessee, Lease, Description [Line Items]
Remaining lease term		1 month
Airport Facilities | Maximum
Lessee, Lease, Description [Line Items]
Remaining lease term		37 years

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Leases, Commitments and Contingencies (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($) aircraft
Future minimum rental payments required under operating leases
April 2019 through December 2019	$ 54,799
2020	93,640
2021	75,898
2022	67,668
2023	62,498
Thereafter	87,591
Total	$ 442,094
E 175
Future minimum rental payments required under operating leases
Number of aircraft under firm purchase commitment | aircraft	11

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Leases, Commitments and Contingencies - Commitments and Obligations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Operating lease payments for aircraft and facility obligations
April 2019 through December 2019	$ 54,799
2020	93,640
2021	75,898
2022	67,668
2023	62,498
Thereafter	87,591
Total	442,094
Firm aircraft and spare engine commitments
Apr - Dec 2019	139,974
2020	131,657
2021	57,696
Total	329,327
Interest commitments
Apr - Dec 2019	95,377
2020	114,048
2021	98,884
2022	84,754
2023	68,950
Thereafter	166,515
Total	628,528
Principal maturities on long-term debt
Apr - Dec 2019	279,873
2020	357,228
2021	339,297
2022	352,717
2023	361,215
Thereafter	1,431,331
Total long-term debt	3,121,661	$ 3,185,438
Total commitments and obligations
Apr - Dec 2019	570,023
2020	696,573
2021	571,775
2022	505,139
2023	492,663
Thereafter	1,685,437
Total	$ 4,521,610
Variable interest rate (as a percent)	0.20%

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Fair Value Measurements (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Fair Value Measurements
Marketable Securities	$ 253,397	$ 360,945
Fair Value of Financial Instruments
Carrying amount of long-term debt	3,097,114	3,159,974
Recurring
Fair Value Measurements
Cost of cash and cash equivalents and available for sale securities	544,200	689,400
Recurring | Fair value
Fair Value Measurements
Cash, Cash Equivalents	290,885	328,384
Marketable Securities	253,397	360,945
Total Assets Measured at Fair Value	544,282	689,329
Recurring | Fair value | Bonds and bond funds
Fair Value Measurements
Marketable Securities	154,407	229,783
Recurring | Fair value | Commercial paper
Fair Value Measurements
Marketable Securities	98,990	131,162
Recurring | Level 1
Fair Value Measurements
Cash, Cash Equivalents	290,885	328,384
Total Assets Measured at Fair Value	290,885	328,384
Recurring | Level 2
Fair Value Measurements
Marketable Securities	253,397	360,945
Total Assets Measured at Fair Value	253,397	360,945
Fair Value of Financial Instruments
Fair value of long-term debt	3,100,000	3,160,000
Carrying amount of long-term debt	3,120,000	3,190,000
Recurring | Level 2 | Bonds and bond funds
Fair Value Measurements
Marketable Securities	154,407	229,783
Recurring | Level 2 | Commercial paper
Fair Value Measurements
Marketable Securities	$ 98,990	$ 131,162

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Long-term Debt (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($) aircraft	Dec. 31, 2018 USD ($)
Debt Instrument [Line Items]
Current portion long-term debt	$ 366,583	$ 354,072
Less current portion of unamortized debt issue cost, net	(3,786)	(3,866)
Current portion of long-term debt, net of debt issue costs	362,797	350,206
Long-term debt, net of current maturities	2,755,078	2,831,366
Less long-term portion of unamortized debt issue cost, net	(20,761)	(21,598)
Long-term debt, net of current maturities and debt issue costs	2,734,317	2,809,768
Total long-term debt (including current portion)	3,121,661	3,185,438
Total unamortized debt issue cost, net	(24,547)	(25,464)
Total	$ 3,097,114	3,159,974
Number of aircraft leased | aircraft	89
Debt issued to purchase of aircraft	$ 14,500
Letter of credit
Debt Instrument [Line Items]
Amount outstanding	$ 80,000	$ 78,700
E 175
Debt Instrument [Line Items]
Number of aircraft delivered | aircraft	1
Purchase of aircraft financed through long-term debt	$ 19,900
Debt instrument, term	12 years
Interest rate (as a percent)	3.90%
Purchased, previously-leased aircraft
Debt Instrument [Line Items]
Number of aircraft purchased | aircraft	2
Debt instrument, term	18 months
Interest rate (as a percent)	2.00%

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Gain on Sale (Details) $ in Thousands			3 Months Ended
	Jan. 22, 2019 USD ($) aircraft	Jan. 11, 2019 USD ($)	Mar. 31, 2019 USD ($)
Gain on sale			$ 46,525
Interest rate (as a percent)	6.85%
Asset Purchase Agreement | ExpressJet
Proceeds from sale of equipment		$ 60,800
Stock Purchase Agreement | ExpressJet
Cash received from stock sale	$ 18,800
Amount loaned to Kair Enterprises, Inc	$ 26,000
Number of aircraft in early lease buyout | aircraft	16
Lease term (in years)			5 years

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Special Items (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019 USD ($)
Special Items
Agreement termination non cash expense	$ 18.5
Employee severance cost	$ 3.4

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Income Taxes (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019 USD ($)
Effective tax rate (as a percent)	23.00%
Statutory Federal income tax rate (as a percent)	21.00%
Accounting Standards Update 2016-09
Discrete tax benefit	$ 2.3