Terminals · BWI
What terminal is Southwest at BWI?
Southwest departs from Terminals A, B, and C at Baltimore/Washington International Thurgood Marshall Airport (BWI). We verified this against the airport's own sources on June 27, 2026 — airlines do move terminals, so we date every check.
Terminal ATerminal BTerminal C
BWI TSA wait times todayLive security waits by checkpoint, so you know when to leave for Terminals A, B, and C.What terminal is Southwest at BWI?
Southwest departs from Terminals A, B, and C at Baltimore/Washington International Thurgood Marshall Airport (BWI). Dominant BWI carrier (~71% of traffic). Concourses A and B are Southwest-exclusive; Southwest also shares Concourse C. A/B/C form one secure zone reached via the A/B/C checkpoint (a new A/B Connector opened January 2026). Verified June 27, 2026.
Where does Southwest check in at BWI?
Ticketing on Main Terminal Upper Level (Departures); proceed via the A/B/C security checkpoint. Bag drop usually closes 45 minutes before departure, so build that into your morning.
Did Southwest move terminals at BWI?
Not that we've found. We confirmed Southwest departs from Terminals A, B, and C at BWI as of June 27, 2026. Airlines do shuffle terminals, so we re-check and date every change.
Does Southwest use a different terminal for international flights at BWI?
BWI's only federal inspection / customs (FIS) facility sits in the international Concourse E, so non-precleared Southwest arrivals (e.g., Cancun/Caribbean) are processed there. Sources disagree on whether such arrivals are handled at Concourse E gates or back on the A/B/C side, so only Southwest's double-confirmed departure/check-in concourses (A/B/C) are listed.
Not sure which building that is? See all BWI terminals with the airport map and how to get between them. Then let your Leave-By Time count backward from your flight — today's BWI security wait, your drive, and the walk to your gate — so you leave with room to breathe.