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.

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.

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.

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

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

The Transportation Department is stepping up enforcement of persistent flight delays with a lawsuit against Southwest Airlines and a fine against Frontier Airlines. The agency said the U.S. District Court lawsuit it filed in California on Wednesday alleges that Southwest illegally operated chronically delayed flights and disrupted passengers'

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

The agency said the U.S. District Court lawsuit it filed in California on Wednesday ... released this month that Southwest ranked fifth among the 10 North American airlines it evaluated for ...

US Government Sues Southwest Airlines and Fines Frontier for Chronically ... The agency said the U.S. District Court lawsuit it filed in California on Wednesday alleges that Southwest illegally ...

The DOT is aiming to send a message to all airlines that it will go to court to enforce passenger protections.