The "XF" tail numbers are a subtle nod to their Frontier Airlines heritage. While these aircraft now wear American Airlines' iconic livery, their history interests aviation enthusiasts.

Frontier Airlines is proposing a deal to acquire competitor Spirit Airlines out of bankruptcy in a cash and stock offer ...

Spirit, which filed for bankruptcy protection last year, says it has rejected the new Frontier overture but would be open to ...

Frontier is one of America's largest low-cost airlines with over 100 aircraft and has recently ... the brand identity. A new ...

Frontier Airlines is continuing to break from its classic budget business model as it chases more premium customers. The airline will introduce "first-class" seats in the first two rows of the ...