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Leases, Commitments, Guarantees and Contingencies (Tables) | 6 Months Ended
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Jun. 30, 2024
Leases, Commitments, Guarantees and Contingencies |
Summary of related terms and discount rates | ​
​ | ​
​ | ​
Weighted-average remaining lease term for operating leases | 11.5 years
Weighted-average discount rate for operating leases | 6.2%
Summary of lease costs | ​
​ | ​
​ | ​
Weighted-average remaining lease term for operating leases | 11.5 years
Weighted-average discount rate for operating leases | 6.2%
​ The Company’s lease costs for the three and six months ended June 30, 2024 and 2023 included the following components (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the three months ended June 30, | ​ | For the six months ended June 30,
​ |  | 2024 |  | 2023 |  | 2024 |  | 2023
Operating lease cost | ​ | $ | 6,658 | ​ | $ | 7,857 | ​ | $ | 13,917 | ​ | $ | 32,805
Variable and short-term lease cost | ​ |  | 543 | ​ |  | 534 | ​ |  | 1,576 | ​ |  | 1,337
Sublease income | ​ | ​ | (1,268) | ​ | ​ | (1,351) | ​ | ​ | (2,514) | ​ | ​ | (2,701)
Total lease cost | ​ | $ | 5,933 | ​ | $ | 7,040 |  | $ | 12,979 | ​ | $ | 31,441
Schedule of future minimum rental income under operating leases | The following table summarizes future minimum rental payments required under operating leases that had initial or remaining non-cancelable lease terms as of June 30, 2024 (in thousands): ​
​ | ​ | ​ | ​
July 2024 through December 2024 |  | $ | 10,419
2025 | ​ |  | 17,895
2026 | ​ |  | 15,427
2027 | ​ |  | 13,052
2028 | ​ |  | 9,976
Thereafter | ​ |  | 56,617
Total future minimum operating lease payments | ​ | $ | 123,386
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 |  | Jul- Dec 2024 |  | 2025 |  | 2026 |  | 2027 |  | 2028 |  | Thereafter
Operating lease payments for aircraft and facility obligations | ​ | $ | 123,386 | ​ | $ | 10,419 | ​ | $ | 17,895 | ​ | $ | 15,427 | ​ | $ | 13,052 | ​ | $ | 9,976 | ​ | $ | 56,617
Firm aircraft and spare engine commitments |  | ​ | 610,945 | ​ | ​ | 143,810 | ​ | ​ | 230,725 | ​ | ​ | 236,410 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | —
Interest commitments (1) |  | ​ | 414,657 | ​ | ​ | 56,799 | ​ | ​ | 97,933 | ​ | ​ | 78,149 | ​ | ​ | 56,289 | ​ | ​ | 40,947 | ​ | ​ | 84,540
Principal maturities on long-term debt |  | ​ | 2,804,058 | ​ | ​ | 224,243 | ​ | ​ | 532,255 | ​ | ​ | 510,598 | ​ | ​ | 464,289 | ​ | ​ | 292,862 | ​ | ​ | 779,811
Total commitments and obligations | ​ | $ | 3,953,046 | ​ | $ | 435,271 | ​ | $ | 878,808 | ​ | $ | 840,584 | ​ | $ | 533,630 | ​ | $ | 343,785 | ​ | $ | 920,968
(1) | At June 30, 2024, the Company’s long-term debt had fixed interest rates.

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