The US Department of Transportation (DOT) has sued Southwest Airlines for allegedly operating numerous "chronically delayed" flights in violation of federal laws prohibiting deceptive practices.

Co. was sued by the US Transportation Department for allegedly violating rules that require airlines to set and meet realistic flight schedules. The carrier was responsible for “unlawful chronic flight delays” that disrupted passengers’ travel plans,

Transportation Department sues Southwest Airlines, seeking over $2.1 million in penalties for chronically delayed flights.

US Government Sues Southwest Airlines and Fines Frontier for Chronically Delayed Flights The Transportation Department is stepping up enforcement of persistent flight delays with a lawsuit against ...

Number seven, Hawaiian Airlines, number six jetblue number five United ... The Transportation Department is stepping up enforcement of persistent flight delays with a lawsuit against Southwest ...

The US Department of Transportation sued Southwest Airlines and fined Frontier Airlines for flight delays, seeking civil penalties against Southwest and imposing a $650,000 fine on Frontier, part of a broader crackdown on airline delay issues.

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Having assessed a first-of-its-kind fine for “chronic flight delays” against JetBlue Airways, federal regulators have now moved to penalize both Southwest Airlines and Frontier Airlines for similar infractions.

(ABC 6 News) — The U.S. Department of Transportation says it is prepared to take airlines to court over flight delays. The agency has filed a lawsuit against Southwest, accusing the airline of illegally operating chronically delayed flights and disrupting passengers’ travel plans.

The lawsuit filed in California alleges that Southwest illegally operated chronically delayed flights and disrupted passengers’ travel plans.

The agency is seeking civil penalties against Southwest Airlines, and also fined Frontier Airlines for its continuous delays.