US government sues Southwest Airlines and fines Frontier for chronically delayed flights

Southwest Airlines jetliner taxis down a runway for take off at Denver International Airport, Tuesday, Dec. 24, 2024, in Denver. (AP Photo/David Zalubowski)
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’ 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,