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

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 flights operated between Chicago Midway International Airport and Oakland, California ... announced an enforcement action against Frontier Airlines 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.

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 agency said the U.S. District Court lawsuit it filed in California on Wednesday alleges ... The department fined Frontier Airlines $650,000 in civil penalties, with $325,000 to be paid to ...

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

The federal government is suing Southwest Airlines and fined Frontier Airlines, accusing the carriers of illegally operating multiple chronically delayed flights and causing significant problems for travelers.

Number nine, Frontier number eight American Airlines, American ... The agency said the U.S. District Court lawsuit it filed in California on Wednesday alleges that Southwest illegally operated ...

We are just a few steps from the finish line. We want to turn what are now one- and two-hour trips into five-minute trips.”