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v3.26.1

Long-term Debt (Details) $ in Thousands | 1 Months Ended | 3 Months Ended |  |
--- | --- | --- | --- | ---
Apr. 30, 2026 | Mar. 31, 2026 USD ($) aircraft | Dec. 31, 2025 USD ($) | Mar. 31, 2025 USD ($)
Debt Instrument [Line Items] |  |  |  |
Current portion of long-term debt |  | $ 601,592 | $ 550,028 |
Current portion of unamortized debt issue cost, net |  | (3,154) | (3,216) |
Current portion of long-term debt, net of debt issue costs |  | 598,438 | 546,812 |
Long-term debt, net of current maturities |  | 1,807,875 | 1,858,341 |
Long-term portion of unamortized debt issue cost, net |  | (12,183) | (13,069) |
Long-term debt, net of current maturities and debt issue costs |  | 1,795,692 | 1,845,272 |
Total long-term debt (including current portion) |  | 2,409,467 | 2,408,369 |
Total unamortized debt issue cost, net |  | (15,337) | (16,285) |
Total long-term debt, net of debt issue costs |  | 2,394,130 | $ 2,392,084 |
Letters of credit and surety bonds outstanding with various banks and surety institutions |  | 47,500 |  | $ 47,200
Amount outstanding |  | $ 24,600 |  |
Effective interest rate (as a percent) |  | 4.40% |  |
Basis spread on variable rate |  | 3.50% |  |
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] |  | skyw:SecuredOvernightFinancingRateSofrOneMonthTermMember |  |
Promissory note |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, term |  | 4 years |  |
Principal amount |  | $ 94,000 |  |
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 fixed annual interest rate |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total long-term debt, net of debt issue costs |  | $ 55,500 |  |
Interest rate (as a percent) |  | 1.00% |  |
Unsecured debt payable to U.S. Treasury at variable interest rate |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total long-term debt, net of debt issue costs |  | $ 145,100 |  |
Basis spread on variable rate |  | 2.00% |  |
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] |  | us-gaap:SecuredOvernightFinancingRateSofrMember |  |
Unsecured debt payable to U.S. Treasury at variable interest rate | Subsequent event |  |  |  |
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 |  | $ 75,400 |  |
Basis spread on variable rate |  | 3.50% |  |
E175 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Number of aircraft delivered | aircraft |  | 1 |  |
Purchase of aircraft financed through long-term debt |  | $ 23,600 |  |
Debt instrument, term |  | 12 years |  |

X
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