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

The Department of Transportation is suing Southwest Airlines, accusing it of operating two “chronically delayed flights” in 2022 that resulted in 180 flight disruptions.

The U.S. Department of Transportation sued Southwest Airlines Wednesday, alleging it illegally operates flights that are persistently delayed, harming passengers and fair competition in the airline industry.

A lawsuit filed against Southwest alleges the airline operated multiple “chronically delayed” flights affecting thousands of passengers.

Southwest is disappointed that DOT chose to file a lawsuit over two flights that occurred more than two years ago," a spokesperson for the airline said.

The Department of Transportation is suing the airline for what it characterized as months of "chronically delayed" flights — those that arrive at least 30 minutes late more than half the time.

The Department of Transportation is suing Southwest for what it characterized as months of "chronically delayed" flights.

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

Southwest Airlines was sued in federal court by the Department of Transportation, while Frontier was hit with a $650,000 fine.

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

The Department of Transportation sued Southwest Airlines Wednesday alleging it deceived customers by offering flights it knew it could not make on time.

Southwest in December 2023 agreed to provide $90 million in travel vouchers of $75 or more to passengers delayed at least three hours getting to final destinations because of an airline-caused issue or cancellation, part of a USDOT settlement over the carrier's December 2022 holiday meltdown.