Long-term Debt (Details) $ in Thousands	9 Months Ended
Sep. 30, 2026 USD ($) aircraft	Dec. 31, 2025 USD ($)
Debt Instrument [Line Items]
Current portion of long-term debt	$ 648,777	$ 550,028
Current portion of unamortized debt issue cost, net	(2,866)	(3,216)
Current portion of long-term debt, net of debt issue costs	645,911	546,812
Long-term debt, net of current maturities	1,729,965	1,858,341
Long-term portion of unamortized debt issue cost, net	(11,016)	(13,069)
Long-term debt, net of current maturities and debt issue costs	1,718,949	1,845,272
Total long-term debt (including current portion)	2,378,742	2,408,369
Total unamortized debt issue cost, net	(13,882)	(16,285)
Total long-term debt, net of debt issue costs	2,364,860	2,392,084
Letters of credit and surety bonds outstanding with various banks and surety institutions	45,300	$ 47,200
Amount outstanding	$ 21,000
Effective interest rate (as a percent)	4.70%
Promissory note
Debt Instrument [Line Items]
Debt instrument, term	4 years
Principal amount	$ 184,000
Unsecured debt payable to U.S. Treasury
Debt Instrument [Line Items]
Total long-term debt, net of debt issue costs	$ 200,600
Unsecured debt payable to U.S. Treasury at variable interest rate
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]	us-gaap:SecuredOvernightFinancingRateSofrMember
Primarily related to acquisition of aircraft and certain spare engines
Debt Instrument [Line Items]
Total long-term debt (including current portion)	$ 2,400,000
Total long-term debt, net of debt issue costs	2,200,000
Line of credit
Debt Instrument [Line Items]
Maximum borrowing capacity	100,000
Amount outstanding	0
Current borrowing capacity	$ 79,000
Basis spread on variable rate	3.50%
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]	skyw:SecuredOvernightFinancingRateSofrOneMonthTermMember
E175
Debt Instrument [Line Items]
Number of aircraft delivered \| aircraft	6
Purchase of aircraft financed through long-term debt	$ 144,800
Debt instrument, term	12 years

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

No definition available.