Alaska Airlines IAD Terminal operates from Concourse B at Washington Dulles International Airport (IAD), located at 1 Saarinen Circle, Dulles, VA 20166, United States. Passengers can access check-in counters, baggage services, security screening, restaurants, shops, and passenger assistance facilities. Travelers should confirm their flight details, check-in location, and departure gate before arriving. Arriving early allows sufficient time for check-in and security procedures. Check airport information screens for flight updates and gate changes before boarding. Always verify terminal and concourse details before departure, as assignments may change.
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