Allegiant Air is expanding its domestic network with the addition of five new routes connecting eight US cities, with a majority of the adds coming from Huntsville, Alabama, a new addition to its ...

Just months after emerging from Chapter 11 bankruptcy, Spirit Airlines is warning about its ability to stay in business.

Travelers in the U.S. may soon have one less low-cost airline option as Spirit Airlines says it could be permanently grounded ...

Struggling Spirit Airlines sparks sector shifts as rivals like Frontier soar. Analyze impacts, market changes, & fare hikes ...

Spirit Airlines released its quarterly earnings report on Aug. 11, warning investors it may not survive the next 12 months.

Low-cost carrier Spirit Airlines expresses substantial doubt about continuing operations within 12 months after debt ...

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

Shares of Spirit Aviation Holdings, the parent company of troubled Spirit Airlines, tumbled on Tuesday after the airline ...

Spirit Airlines drops a going-concern bombshell in its SEC filing. Can the ULCC find cash, merge, or is liquidation next?