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

The Department of Transportation sued Southwest Airlines Wednesday alleging it deceived customers by offering flights it knew ...

A lawsuit filed against Southwest alleges the airline operated multiple “chronically delayed” flights affecting thousands of ...

The Transportation Department is taking legal action against Southwest, alleging the airline illegally operated persistently ...

Southwest Airlines stock fell Thursday after the Department of Transportation sued the airline over a pair of "chronically ...

The Department of Transportation and Department of Justice jointly filed a lawsuit on Wednesday against Southwest Airlines ...

(ABC 6 News) — The U.S. Department of Transportation says it is prepared to take airlines to court over flight delays. The ...

Southwest is disappointed that DOT chose to file a lawsuit over two flights that occurred more than two years ago," a ...

The agency is seeking civil penalties against Southwest Airlines, and also fined Frontier Airlines for its continuous delays.

The Department of Transportation said that two Southwest Airlines routes arrived late nearly 180 times in a five-month period ...