Southwest had a big year at BWI Airport with new routes, major projects

By Morgan Simpson – Reporter , Baltimore Business Journal

Nov 26, 2025

Southwest Airlines continued to double down this year on BWI Airport as its East Coast hub, adding new flights to the schedule and wrapping up some major projects.

The largest airline carrier at Baltimore/Washington International Thurgood Marshall Airport added or announced at least ninenew flight routes from Baltimore and opened a multimillion-dollar maintenance facility in 2025. As the Dallas-based carrier builds on its Maryland presence, it’s also making major changes to its business model, including the planned elimination of open seating starting in 2026.

“We feel very confident they’ll continue to expand their growth here at BWI and then do some things certainly around the country, too, to start expanding and being able to work through this new business model,” Shannetta Griffinthe new executive director and CEO of the Maryland Aviation Administration, told the Baltimore Business Journal in October of Southwest’s evolution.

This year, Southwest (NYSE: LUV) added nonstop, redeye service from Portland, Seattle and San Francisco, as well as three other California cities: Ontario, Long Beach and San Jose. Those additional flights came despite announcing a 1.5% reduction in the carrier’s flights nationwide in 2025. The airline also unveiled some new routes that will start in 2026: a direct flight to St. Thomas in the U.S. Virgin Islands kicking off in February, daily service to Knoxville, Tennessee starting in March, and flights to the Caribbean island of St. Maarten launching in April.

Read more here.

BWI Thurgood Marshall Airport Welcomes Added Transcontinental Service from Southwest Airlines

Airline Boosts Red-Eye Service at BWI Marshall for Summer 2025

Southwest Airlines announced its summer 2025 schedule update today, including several new transcontinental flight additions for Baltimore/Washington International Thurgood Marshall Airport. Starting June 5, Southwest will add nonstop service between BWI Marshall and six west coast markets: Long Beach, CA; Ontario, CA; Portland, OR; San Francisco, CA; San Jose, CA; and Seattle, WA.

Photo of a Southwest Airlines aircraft on a taxiway at BWI Marshall Airport with the airport's terminal building and control tower in the background.

“These new flights will foster tourism and business development for our state and region,” said Ricky Smith, Executive Director/CEO of BWI Thurgood Marshall Airport. “We are working to enhance the travel product for our customers while creating more opportunities for air service from our airline partners.”

BWI Marshall Airport is the busiest Southwest station on the east coast. In 2023, Southwest flew 18.3 million passengers at BWI Marshall. There are more than 5,200 Southwest employees in the local market, according to the airline.

The new service from Southwest Airlines announced today will operate into BWI Marshall as overnight, red-eye flights. The six new red-eye markets are in addition to six other red-eye flights to BWI Marshall that were previously announced by the airline, including: Denver, CO; Las Vegas, NV; Los Angeles, CA; Phoenix, AZ; Sacramento, CA; and San Diego, CA.

BWI Marshall is advancing several major capital projects that will add new amenities for passengers while providing important infrastructure to support airline service. The work includes the Concourse A/B Connector and Baggage Handling System, the largest capital project in the airport’s history. The project will support Southwest by creating: a direct connection between Concourses A and B; a new, sophisticated baggage handling system; expanded seating areas at passenger gates; new restrooms; and added food and retail concessions space.

BWI Marshall Airport generates a total economic impact of $11.3 billion. The airport and visitors produce and support more than 107,000 jobs throughout Maryland and the region. The airport offers approximately 300 daily nonstop departures to about 90 domestic and international destinations, making it the busiest airport in the National Capital region.