Frontier's promotion is eligible on new bookings via a promo code for flights departing May 28, the same day Southwest's free checked bag policy ends, through August 18.

Maybe it's time for a divorce, at least, that's what Frontier Airlines is suggesting after changing its checked baggage policy in response to Southwest Airlines's policy change.

Frontier's new policy takes aim at Southwest: 'Ultimate ‘divorce your old airline’ deal' Greg Giesen Nathan Diller. USA TODAY NETWORK. Are you unhappy with your favorite airline's policy for ...

In a statement obtained by PEOPLE, Frontier Airlines announced starting on Tuesday, March 18, through Aug. 18, passengers will be able to receive a new offering called the "Economy Bundle," which ...

Frontier Airlines on Tuesday unveiled a free bag check promotion in a dig at Southwest, exactly one week after the rival budget carrier ended its own decades-old policy.. The rival budget airline ...