Frontier Airlines is set to move their check-in counters at Denver International Airport (DIA) in the early morning hours of Wednesday, Sept. 14. Skip Navigation Share on Facebook ...

Frontier Airlines is adding a new pin for a somewhat surprising destination to its route map. The carrier announced on Tuesday that it'll start flying to Denver International Airport (DEN), Las ...

Hart Van Denburg/CPR News Frontier Airlines passenger jets at gates along Terminal A at Denver’s International Airport. Denver-based Frontier Airlines is cutting 43 routes.