Terminals · IAD
What terminal is Alaska at IAD?
Alaska departs from Terminal B at Washington Dulles International Airport (IAD). We verified this against the airport's own sources on June 27, 2026 — airlines do move terminals, so we date every check.
Terminal B
IAD TSA wait times todayLive security waits by checkpoint, so you know when to leave for Terminal B.What terminal is Alaska at IAD?
Alaska departs from Terminal B at Washington Dulles International Airport (IAD). Departures from Concourse B (oneworld co-location near American, around gates B62-B67); ticket counter and bag drop on the Main Terminal upper level. (Low-quality aggregator sites claiming 'Concourse D' were checked and dismissed — C/D are United-only.). Verified June 27, 2026.
Where does Alaska check in at IAD?
Main Terminal ticketing/Departures upper level, Zone #3. Bag drop usually closes 45 minutes before departure, so build that into your morning.
Did Alaska move terminals at IAD?
Not that we've found. We confirmed Alaska departs from Terminal B at IAD as of June 27, 2026. Airlines do shuffle terminals, so we re-check and date every change.
Not sure which building that is? See all IAD terminals with the airport map and how to get between them. Then let your Leave-By Time count backward from your flight — today's IAD security wait, your drive, and the walk to your gate — so you leave with room to breathe.