Leases, Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2019

Summary of related terms and discount rates

	June 30, 2019
Weighted-average remaining lease term
Operating leases		6.5 years
Weighted-average discount rate
Operating leases		6.4%

Summary of lease costs

	For the three months ended June 30,
	2019		2018
Operating lease cost	$	27,647	$	45,425
Variable and short-term lease cost		1,346		1,392
Total lease cost	$	28,993	$	46,817

	For the six months ended June 30,
	2019		2018
Operating lease cost	$	54,868	$	98,258
Variable and short-term lease cost		2,821		2,811
Total lease cost	$	57,689	$	101,069

Schedule of future minimum rental payments for operating leases

July 2019 through December 2019	$	36,756
2020		93,752
2021		76,687
2022		67,728
2023		62,558
Thereafter		88,144
	$	425,625

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 2019		2020		2021		2022		2023		Thereafter
Operating lease payments for aircraft and facility obligations	$	425,625	$	36,756	$	93,752	$	76,687	$	67,728	$	62,558	$	88,144
Firm aircraft and spare engine commitments		313,466		79,428		136,598		97,440		—		—		—
Interest commitments (1)		615,318		63,949		116,723		101,295		87,294		71,252		174,805
Principal maturities on long-term debt		3,088,639		171,243		361,481		344,587		358,586		367,322		1,485,420
Total commitments and obligations	$	4,443,048	$	351,376	$	708,554	$	620,009	$	513,608	$	501,132	$	1,748,369

(1) At June 30, 2019, the Company had variable rate notes representing only 0.1% of its total long-term debt.

Previously reported

Schedule of future minimum rental payments for operating leases

The following table summarizes future minimum rental payments required under operating leases that have non-cancelable lease terms in excess of one year as of December 31, 2018 (in thousands):