What to know
IAD official airline directory lists United at IAD. Terminal operations can move during construction, irregular operations, or seasonal schedule changes.
Airport layout
Washington Dulles International Airport uses Main Terminal — Concourses A/B as its primary passenger-processing area. Follow the concourse or gate shown on the day-of-travel boarding pass.
Getting to the gate
Choose the IAD terminal shown by the operating airline, then confirm the check-in zone before curbside drop-off. Allow extra time when the gate is in a different concourse.
Connections
Connection paths at IAD depend on the concourse pair and current security controls. Follow airport signs and ask the operating airline before leaving the secure area.
