Two low-cost airlines are facing questions over whether they bill passengers on the same flights differently based on where ...

Frontier Airlines has managed to snap a four-year full-year net loss streak, ending the year with a net profit of $85 million, with the airline’s chief executive praising its revenue and network ...

From longstanding brands like Southwest to newcomers like Avelo, here's what you need to know about the US's budget airlines.

Sens. Blumenthal, Hassan, and Hawley call on Spirit and Frontier Airlines to stop collecting personal data before revealing ...

The Fifth Circuit Court of Appeals struck down a junk fee disclosure rule, arguing that it violated an administrative law.

Bankrupt Spirit Airlines Inc. rejected a new acquisition offer from the parent of Frontier Airlines but said it remains open ...

Frontier Airlines renewed its courtship of bankrupt ... Spirit, known for keeping base prices low while tacking on fees for carry-on bags and minor amenities, has struggled to right itself after ...

Frontier had pitched the bankrupt airline on a coupledom that it claimed would have created a formidable low-cost competitor ...

Spirit Airlines cut a dozen routes this week, including several seasonal spring break flights, as the airline appeared to ...

Frontier Airlines renewed its courtship of bankrupt Spirit Airlines with an offer to merge and create one large low-cost carrier, but Spirit quickly rejected the overture Wednesday and said it will ...