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

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 calculation includes cancellations and diversions. "When an airline knows that a particular flight is consistently late, it is essential that the airline adjusts its schedule," the DOT said in its lawsuit,

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 Department of Transportation filed a lawsuit against Southwest Airlines for allegedly operating chronically delayed flights in 2022. It also fined Frontier Airlines for chronic delays.