Accrued Liabilities (Tables)

6 Months Ended

Jun. 30, 2019

Payables and Accruals [Abstract]

Accrued liabilities included in other current liabilities

Other current liabilities as of June 30, 2019 and December 31, 2018 consist of the following:

	June 30, 2019		December 31, 2018
	(in thousands)
Federal excise and other passenger taxes and fees payable	$	97,375	$	60,604
Salaries and wages	83,379		82,900
Airport obligations	64,065		52,029
Aircraft maintenance	41,563		59,805
Fuel	27,204		25,368
Aircraft and facility lease obligations	20,277		15,149
Interest payable	17,558		18,086
Other	27,620		25,736
Other current liabilities	$	379,041	$	339,677