CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
OPERATING REVENUES:
Passenger	$ 3,168,000skyw_RevenueFromPassengers	$ 3,239,525skyw_RevenueFromPassengers	$ 3,467,546skyw_RevenueFromPassengers
Ground handling and other	69,447us-gaap_OtherSalesRevenueNet	58,200us-gaap_OtherSalesRevenueNet	66,826us-gaap_OtherSalesRevenueNet
Total operating revenues	3,237,447us-gaap_Revenues	3,297,725us-gaap_Revenues	3,534,372us-gaap_Revenues
OPERATING EXPENSES:
Salaries, wages and benefits	1,258,155us-gaap_LaborAndRelatedExpense	1,211,307us-gaap_LaborAndRelatedExpense	1,171,689us-gaap_LaborAndRelatedExpense
Aircraft maintenance, materials and repairs	682,773	686,381	659,869
Aircraft rentals	305,334us-gaap_AircraftRental	325,360us-gaap_AircraftRental	333,637us-gaap_AircraftRental
Depreciation and amortization	259,642	245,005	251,958
Aircraft fuel	193,247us-gaap_FuelCosts	193,513us-gaap_FuelCosts	426,387us-gaap_FuelCosts
Ground handling services	123,917skyw_GroundHandlingServiceExpenses	129,119skyw_GroundHandlingServiceExpenses	125,148skyw_GroundHandlingServiceExpenses
Special items	74,777
Station rentals and landing fees	51,024skyw_StationRentalsAndLandingFees	114,688skyw_StationRentalsAndLandingFees	169,855skyw_StationRentalsAndLandingFees
Other, net	263,730us-gaap_OtherCostAndExpenseOperating	239,241us-gaap_OtherCostAndExpenseOperating	229,842us-gaap_OtherCostAndExpenseOperating
Total operating expenses	3,212,599us-gaap_CostsAndExpenses	3,144,614us-gaap_CostsAndExpenses	3,368,385us-gaap_CostsAndExpenses
OPERATING INCOME	24,848us-gaap_OperatingIncomeLoss	153,111us-gaap_OperatingIncomeLoss	165,987us-gaap_OperatingIncomeLoss
OTHER INCOME (EXPENSE):
Interest income	4,096us-gaap_InvestmentIncomeInterest	3,689us-gaap_InvestmentIncomeInterest	7,928us-gaap_InvestmentIncomeInterest
Interest expense	(65,995)us-gaap_InterestExpense	(68,658)us-gaap_InterestExpense	(77,380)us-gaap_InterestExpense
Other, net	20,708us-gaap_OtherNonoperatingIncomeExpense	10,390us-gaap_OtherNonoperatingIncomeExpense	(10,639)us-gaap_OtherNonoperatingIncomeExpense
Total other expense, net	(41,191)us-gaap_NonoperatingIncomeExpense	(54,579)us-gaap_NonoperatingIncomeExpense	(80,091)us-gaap_NonoperatingIncomeExpense
INCOME (LOSS) BEFORE INCOME TAXES	(16,343)	98,532	85,896
PROVISION FOR INCOME TAXES	7,811us-gaap_IncomeTaxExpenseBenefit	39,576us-gaap_IncomeTaxExpenseBenefit	34,739us-gaap_IncomeTaxExpenseBenefit
NET INCOME (LOSS)	(24,154)	58,956	51,157
BASIC EARNINGS (LOSS) PER SHARE (in dollars per share)	$ (0.47)us-gaap_EarningsPerShareBasic	$ 1.14us-gaap_EarningsPerShareBasic	$ 1.00us-gaap_EarningsPerShareBasic
DILUTED EARNINGS (LOSS) PER SHARE (in dollars per share)	$ (0.47)us-gaap_EarningsPerShareDiluted	$ 1.12us-gaap_EarningsPerShareDiluted	$ 0.99us-gaap_EarningsPerShareDiluted
Weighted average common shares:
Basic (in shares)	51,237	51,688	51,090
Diluted (in shares)	51,237	52,422	51,746
COMPREHENSIVE INCOME (LOSS):
Net Income (loss)	(24,154)	58,956	51,157
Proportionate share of other companies foreign currency translation adjustment, net of taxes	(1,129)	66	(251)
Net unrealized appreciation (depreciation) on marketable securities, net of taxes	(719)	(13)	316
TOTAL COMPREHENSIVE INCOME (LOSS)	$ (26,002)us-gaap_ComprehensiveIncomeNetOfTax	$ 59,009us-gaap_ComprehensiveIncomeNetOfTax	$ 51,222us-gaap_ComprehensiveIncomeNetOfTax

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- Definition

Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 45

-Paragraph 10

-URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1448-109256

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Weighted-Average Number of Common Shares Outstanding

-URI http://asc.fasb.org/extlink&oid=6528421

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