Leases and Aircraft Maintenance Deposits (Tables)

12 Months Ended

Dec. 31, 2021

Leases [Abstract]

Schedule of Future Minimum Lease Payments for Finance Leases

The following table provides details of the Company's future minimum lease payments under finance lease liabilities and operating lease liabilities recorded on the Company's consolidated balance sheets as of December 31, 2021. The table does not include commitments that are contingent on events or other factors that are currently uncertain and unknown.

	Finance Leases		Operating Leases						Total Operating and Finance Lease Obligations
			Aircraft and Spare Engine Leases		Property Facility Leases		Other
	(in thousands)
2022	$	842	$	255,121	$	4,771	$	157	$	260,891
2023	465		249,420		4,788		14		254,687
2024	215		236,811		3,028		—		240,054
2025	117		218,569		1,126		—		219,812
2026	39		192,309		964		—		193,312
2027 and thereafter	—		1,512,674		142,175		—		1,654,849
Total minimum lease payments	$	1,678	$	2,664,904	$	156,852	$	171	$	2,823,605
Less amount representing interest	90		778,639		133,304		2		912,035
Present value of minimum lease payments	$	1,588	$	1,886,265	$	23,548	$	169	$	1,911,570
Less current portion	785		154,946		3,529		156		159,416
Long-term portion	$	803	$	1,731,319	$	20,019	$	13	$	1,752,154

Schedule of Future Minimum Lease Payments for Operating Leases

The following table provides details of the Company's future minimum lease payments under finance lease liabilities and operating lease liabilities recorded on the Company's consolidated balance sheets as of December 31, 2021. The table does not include commitments that are contingent on events or other factors that are currently uncertain and unknown.

	Finance Leases		Operating Leases						Total Operating and Finance Lease Obligations
			Aircraft and Spare Engine Leases		Property Facility Leases		Other
	(in thousands)
2022	$	842	$	255,121	$	4,771	$	157	$	260,891
2023	465		249,420		4,788		14		254,687
2024	215		236,811		3,028		—		240,054
2025	117		218,569		1,126		—		219,812
2026	39		192,309		964		—		193,312
2027 and thereafter	—		1,512,674		142,175		—		1,654,849
Total minimum lease payments	$	1,678	$	2,664,904	$	156,852	$	171	$	2,823,605
Less amount representing interest	90		778,639		133,304		2		912,035
Present value of minimum lease payments	$	1,588	$	1,886,265	$	23,548	$	169	$	1,911,570
Less current portion	785		154,946		3,529		156		159,416
Long-term portion	$	803	$	1,731,319	$	20,019	$	13	$	1,752,154

Schedule of Lease Costs, Lease Terms and Discount Rates

The table below presents information for lease costs related to the Company's finance and operating leases:

	Year Ended December 31,
	2021		2020
	(in thousands)
Finance lease cost
Amortization of leased assets	$	733	$	824
Interest of lease liabilities	93		194
Operating lease cost
Operating lease cost (1)	220,137		201,474
Short-term lease cost (1)	31,036		25,195
Variable lease cost (1)	181,902		125,534
Total lease cost	$	433,901	$	353,221

    (1) Expenses are classified within aircraft rent and landing fees and other rents on the Company's consolidated statements of operations.

The table below presents lease-related terms and discount rates as of December 31, 2021:

	December 31, 2021		December 31, 2020
Weighted-average remaining lease term
Operating leases	14.9 years		12.9 years
Finance leases	2.5 years		2.6 years
Weighted-average discount rate
Operating leases	5.62	%	6.08	%
Finance leases	4.79	%	5.54	%