I took silver to Dulles this morning.

i live south of DCA.

it took me 45 minutes on silver from Rosslyn to Dulles.

exit one side of metro station.
walk a corridor with 3 moveable walkways.
thrn a fork in the path. There are airline signs on the wall denoting which side to go
I’m flying United
you follow the signage thrn you enter the main terminal at bottom levrl
up the incline and across the np baggage claim hallway is the up escalators for the check bag airline stations and security.

IIRC this was door 6 on united side. Door 4 was where you had yo get the SILVER line bus from.my guess is door 2 on the other side of the main for the other entry/ exit to metro.

the point you entered at 6 from metro was on the side of the exit do to the outside. Likely the other side is similar.