Las Vegas Sun - Photograph : Frontier Airlines

January 21, 2018

Currently: 52° — Complete forecast

In this Feb. 22, 2010, file photo, Frontier Airlines jetliners sit stacked up at gates along the A concourse at Denver International Airport.

David Zalubowski / AP

In this Feb. 22, 2010, file photo, Frontier Airlines jetliners sit stacked up at gates along the A concourse at Denver International Airport.