Baltimore/Washington International Thurgood Marshall Airport

Baltimore/Washington International Thurgood Marshall Airport is the busiest of the three airports serving the Washington-Baltimore metropolitan region by passenger volume, and one of Southwest Airlines' largest operational focus cities nationwide. Located 10 mi (16 km) south of downtown Baltimore and 32 mi (51 km) northeast of Washington, D.C., at 146 ft (45 m) elevation on a site straddling Anne Arundel County, BWI handles 168 routes across 102 destinations through 34 airlines, and competes directly with Reagan National (DCA) and Washington Dulles (IAD) for the capital-region catchment of roughly 10M residents. The airport was renamed in 2005 to honor Supreme Court Justice Thurgood Marshall, a Baltimore native. Southwest's hub-level operation — roughly 200 daily departures and dedicated Concourses A and B — accounts for the majority of movements and has made BWI one of the top five Southwest bases in the country. Spirit, Frontier, Delta, American, United, JetBlue, Allegiant, Avelo, and Breeze Airways maintain substantial secondary operations, and international service includes British Airways (London–Heathrow), Air Canada (Toronto, Montreal), Condor (seasonal Frankfurt), and Copa Airlines (Panama City). The route mix is heavily leisure-weighted toward Florida, the Caribbean, and transcontinental destinations, with business traffic concentrated on the Boston–NYC–Chicago–Atlanta–Dallas corridors. The airfield has three asphalt runways — the primary 10/28 at 10,503 ft (3,201 m), 15R/33L at 9,501 ft (2,896 m), and shorter 15L/33R at 5,000 ft (1,524 m) — supporting widebody operations on the longer two. A single unified terminal with five concourses (A, B, C, D, and E) houses all commercial traffic after multiple expansion phases. BWI's signature infrastructure advantage is the on-site BWI Rail Station, served by both Amtrak Northeast Corridor trains and MARC commuter rail, giving direct rail access to Baltimore Penn Station (10 min), Washington Union Station (35 min), Philadelphia (90 min), and New York Penn Station (180 min) — a true high-speed rail link that only a handful of U.S. airports can match.