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Southwest Airlines announced Thursday that it plans to build its first maintenance hangar in the Northeast at BWI Thurgood Marshall Airport, a move that further cements its ties to the airport and signals more growth for the airline in the region.

Twenty-five years after its debut at BWI Airport, Southwest — now the largest single carrier in the U.S. — offers more than 240 departures per day from Baltimore to 64 other cities. It now accounts for roughly 70 percent of the passenger volume through the airport.

A Southwest Airlines was forced to land in Philadelphia after engine failure. Here's what you need to know.

Southwest Airlines plans to stop overbooking flights — an industry practice implicated in an ugly incident on a United Airlines flight that has damaged

Southwest Airlines, the largest carrier at Baltimore/Washington International Thurgood Marshall Airport, announced Monday it will add additional flights to eight cities around the country – and plans to add more flights in the future.

Officials at BWI Thurgood Marshall Airport are considering a major expansion of international service that would double current investments to a cool quarter billion.

The head of Southwest Airlines told a packed room of local business leaders on Friday that BWI Thurgood Marshall Airport will be a "focal point" for the airline's continued expansion into international markets.

Southwest Airlines hopes to add Central America to its list of destinations with daily round trip service from Baltimore-Washington Thurgood Marshall International Airport to Costa Rica starting in early March, the airline announced Friday.

Many of the airplanes overhead in the Baltimore region could start looking a bit different soon, as Southwest Airlines unveiled a new logo and color scheme for its aircraft Monday.

Southwest Airlines will begin offering non-stop flights between Baltimore and Dallas in October, the airline said Monday.

Higher airfares and lower fuel prices combined to give Southwest Airlines $59 million in first-quarter net profits, or 8 cents a share, beating Wall Street's predictions.

Now that Southwest Airlines has completed its $1.4 billion purchase of AirTran Holdings, executives have launched the longer-term process of merging two brands, retraining employees, rolling out larger aircraft and positioning Southwest for international expansion.