Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2013

Commitments and Contingencies Disclosure [Abstract]

Future minimum lease payments under noncancelable operating leases

Future minimum lease payments under noncancelable operating leases as of March 31, 2013 and the periods in which payments are due were as follows:

	Operating Lease Obligations
	(in thousands)
Remainder of 2013	$	135,348
2014	177,788
2015	176,200
2016	169,458
2017	143,969
2018 and thereafter	438,513
Total minimum lease payments	$	1,241,276

Employee groups and status of the collective bargaining agreements

he table below sets forth our employee groups and status of the collective bargaining agreements as of March 31, 2013.

Employee Groups	Representative	Amendable Date	Percentage of Workforce
Pilots	Air Line Pilots Association, International (ALPA)	August 2015	22%
Flight Attendants	Association of Flight Attendants (AFA-CWA)	August 2007	33%
Dispatchers	Transport Workers Union (TWU)	July 2012	1%