Accrued Liabilities (Tables)

3 Months Ended

Mar. 31, 2018

Payables and Accruals [Abstract]

Accrued liabilities included in other current liabilities

Other current liabilities as of March 31, 2018 and December 31, 2017 consist of the following:

	March 31, 2018		December 31, 2017
	(in thousands)
Salaries and wages	$	145,995	$	54,338
Federal excise and other passenger taxes and fees payable	55,723		42,036
Airport obligations	54,685		56,299
Aircraft maintenance	47,221		33,033
Interest payable	20,035		11,384
Fuel	19,971		25,171
Aircraft and facility lease obligations	11,864		16,992
Other	22,684		23,117
Other current liabilities	$	378,178	$	262,370