Frontier Airlines took a swipe at Southwest Airlines' plan to start charging for seat assignments and checked luggage by doing the opposite. Budget carrier Frontier said customers can receive a bundle ...

Frontier's summer free bag promotion starts the same day Southwest will end its famous policy.

Checking a bag is something frequent flyers try mightily to avoid. It adds time, extra logistics, and cost to air travel. When little ones come along, however, packing light just isn't always possible ...