Once you have arrived at Dulles International Airport and gone through TSA checkpoints, it is very easy to get around and between terminals. However, there are a few options that you can try to move between terminals and gates.

Inter-Terminal Transport

Passenger can transfer between terminals by Aero Train, and it's an underground airport train system connecting the Arrival Terminal. Also, it moves you to A, B, and C gates. The whole process will take less than 2 minutes. It is available for domestic and international passengers.

Airport Shuttle Bus

There is a free Airport Shuttle Service that connects the Arrival terminal with Garage 1.