Spirit Airlines stock plummeted 40% after it warned it could go out of business, while Frontier rose 29%. Less competition could mean higher prices.

Just five months after emerging from Chapter 11 bankruptcy protection, Spirit Airlines is warning about its future ability to ...

Today’s Forbes Daily covers Spirit Airlines on the verge of collapse, better-than-expected inflation reading, how much ...

American low-cost airline Spirit Airlines has officially confirmed what many had long suspected: The company’s future is ...