The lawsuit alleges Southwest illegally operated chronically delayed flights and disrupted passengers' travel plans.

While the initial fine was $325,000, the DOT warned that if Frontier Airlines continues to chronically delay flights, the penalty will double.

The DOT filed a lawsuit against Southwest Airlines, citing a pattern of chronic delays, as the government pushes for stricter accountability.

This past weekend, video surfaced of former UFC champion Khabib Nurmagomedov being kicked off a Frontier Airlines flight. The fighter turned coach was

The United States government is suing Southwest and Frontier Airlines, alleging "chronically delayed flights."

Travelers can win a year’s worth of free flights on Frontier Airlines. The “New Year, New Adventure” promotion will grant one jet-setter the opportunity to fly across the world, checking off their travel bucket list one destination at a time.