"Bags fly free" was a staple slogan for the airline, which trademarked the phrase in 2012. Members of Southwest's top-tier ...

Southwest’s iconic blue, red and yellow planes may still be recognizable in the sky after its recent moves — but underneath, ...

Frontier, which is going through its own overhaul to offer more premium perks, said it may even make the free bags permanent if enough people take advantage of the temporary deal.

The carrier’s decision to charge baggage fees harks back to Disneyland’s move from the free Fast Pass in favor of the paid Lightning Lane program.