As part of a regulatory crackdown on “chronically” late flights, federal transport regulators are suing the carrier after reaching deals with two others.

Airlines have a legal obligation to ensure that their flight schedules provide travelers with realistic departure and arrival times," Transportation Secretary Pete Buttigieg said in a statement.

Airline CEOs didn't shed any tears with the departure of Pete Buttigieg. But the Biden administration's DOT secretary provided needed oversight of an industry that has had a lot its own way over time.

On Wednesday, the U.S. Department of Transportation (DOT) filed a lawsuit in a San Francisco court against Southwest Airlines over “unlawful, chronic flight delays,” U.S. Transportation Secretary Pete Buttigieg announced in a Jan. 15 statement.

The US Department of Transportation has filed a lawsuit against Southwest Airlines accusing the carrier of operating chronically delayed flights and maintaining unrealistic schedules

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

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 Airlines is being sued and Frontier Airlines fined over chronic flight delays by the Department of Transportation, the DOT announced Wednesday. Why it matters: Wednesday's announcement by the outgoing Biden administration's Transportation Secretary,

Yesterday, the United States and U.S. Department of Transportation (DOT) disclosed a lawsuit against Southwest Airlines, accusing the airline of chronically delayed flights and interrupting passengers’ travels.

Southwest Airlines’ stock was falling Thursday, after Citigroup downgraded the stock to sell from neutral, arguing that the valuation has risen while earnings quality and free-cash-flow conversion have deteriorated.

Southwest Airlines was not initially available for comment ... act and the road ahead In an exit interview with All Things Considered, DOT Secretary Pete Buttigieg reflects on the Biden administration’s infrastructure act and why it didn’t resonate ...

Transportation Secretary Pete Buttigieg said airlines have a legal obligation to ensure that their schedules list realistic departure and arrival times.