Frontier Airlines is introducing a free checked bag promotion in an effort to poach former Southwest passengers frustrated by the airline's decision to ditch its longstanding "bags fly free" policy. Called "Your New Love,

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

Frontier Airlines is stepping up its game. The airline announced Tuesday via press release that it will offer customers a free checked bag on select flights this summer.