The Transportation Department is stepping up enforcement of persistent flight delays with a lawsuit against Dallas-based 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’ travel plans. It says it’s seeking “maximum civil penalties.”
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“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. “Today’s action sends a message to all airlines that the Department is prepared to go to court in order to enforce passenger protections.”
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The Transportation Department said its investigation found that Southwest operated two chronically delayed flights – one between Chicago Midway International Airport and Oakland, Calif., and another between Baltimore, Md. and Cleveland, Ohio.
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Both flights were chronically delayed for five straight months and together resulted in 180 flight disruptions for passengers between April and August 2022, the agency said.
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The department fined Frontier Airlines $650,000 in civil penalties with $325,000 to be paid to the U.S. Treasury and the remaining $325,000 to be suspended if the carrier does not operate any chronically delayed flights in the next three years.
The announcement comes less than two weeks after the Transportation Department fined JetBlue $2 million for chronic delays, the first time it imposed a penalty for lateness on specific routes. The agency cited JetBlue’s chronic delays on “unrealistic scheduling.” JetBlue then said the government, which operates the air traffic control system, shares the blame for late flights.
Aviation-data provider Cirium said in a report released this month that Southwest ranked fifth among the 10 North American airlines it evaluated for their on-time performance, with 77.8% of arrivals and a little under 77% of departures last year taking place in a timely way. By comparison, top-ranked Delta Air Lines scored 83.5% for arrivals and 83.7% for departures.
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Last year, federal regulators increased their scrutiny of Southwest Airlines after a series of incidents, including flying at very low altitudes while still miles away from an airport. The Federal Aviation Administration said in July it wanted to ensure the carrier was complying with federal safety regulations. The FAA declined to provide details, but noted that it continually adjusts oversight of airlines based on risk.