Frontier's summertime deal appears to be in response to Southwest Airlines, which recently announced it will start charging for checked bags.

The low-cost air carrier is offering a promotion with reduced fares a free checked bag for travel through summer.

Frontier Airlines took a swipe at Southwest Airlines’ plan to start charging for seat assignments and checked luggage by doing the opposite.

Frontier Airlines recently announced a new promotion that makes travel with a companion or friends totally free, with its ...

Frontier Airlines is offering a complimentary checked bag, carry-on, seat selection, and flight changes for nonstop flights booked by March 24. This promotion follows Southwest Airlines' recent ...

Frontier pounced on free bags as a winning value proposition after Southwest Airlines dropped its “two bags free” brand-defining policy.

Frontier Airlines seems to be taking advantage of a competitor’s recent policy change with the promotion of a temporary ...

Frontier announced the limited time offer a week after rival Southwest Airlines ended its "bags fly free" policy for most travelers.

DENVER — Frontier Airlines is capitalizing on the growing backlash against Southwest Airlines with a new promotion this ...

Frontier and American Airlines have rushed forward with new deals, in the wake of Southwest Airlines' controversial decision ...

Days after Southwest Airlines announced that it will no longer offer two free checked bags to most customers, Frontier has ...