Terminals · IAD
KLM departs from Terminal A at Washington Dulles International Airport (IAD). We verified this against the airport's own sources on May 23, 2026 — airlines do move terminals, so we date every check.

KLM departs from Terminal A at Washington Dulles International Airport (IAD). Concourse A (international concourse); shares the Air France-KLM Lounge in Concourse A with SkyTeam partners. Verified May 23, 2026.
Main Terminal ticketing/Departures upper level, Zone #2. Bag drop usually closes 45 minutes before departure, so build that into your morning.
Not that we've found. We confirmed KLM departs from Terminal A at IAD as of May 23, 2026. Airlines do shuffle terminals, so we re-check and date every change.
International service to Amsterdam departs Concourse A.
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.