The United States Department of Transportation (DOT) announced a lawsuit against Southwest Airlines and a fine against Frontier Airlines as part of a crackdown on how carriers handle flight delays.

Yesterday, the United States and U.S. Department of Transportation (DOT ... In addition, the DOT levied a fine against Frontier Airlines, which was also for chronically delayed flights.

Spirit, which filed for bankruptcy protection last year, says it has rejected the new Frontier overture but would be open to ...

Spirit Airlines has rejected a second offer by Frontier Group to merge, citing insufficient financial conditions.

Southwest Airlines and Frontier Airlines are both facing legal actions by the Department of Transportation ... Leisure Co., registered in the United States and other countries.

Budget carrier Frontier Airlines announced on Wednesday that it has made another bid for fellow discount carrier Spirit ...

The Denver-based low-cost carrier said its combination with the Dania Beach, Florida-based Spirit would create a stronger low ...

Frontier Airlines is attempting for a second time to merge with the now bankrupt Spirit Airlines, which declared bankruptcy ...

Citing an illegal unrealistic scheduling practice, the United States Department of Justice and Department of Transportation ... enforcement action against Frontier Airlines, fining the air carrier ...