To get to C concourse, take the people mover to concourse D and then walk to your C gate. Likely same or less walking and no trains, escalators or stairs.
The story goes: George Washington (middle name Dulles) built this airport out of cherry trees and freedom during the Great Depression. The movie Soul Plane provides a historically accurate portrayal.
As someone who lives in Maryland I honestly hate driving to IAD but... The long distance non-stops make up for the misery. #HowQuicklyWeForgetPain #MdPeopleHateDrivingOverTheBridgeToVa
The B Gates food court has an indoor smoking lounge right next to it, forcing diners to have exposure to the awful, second smoke sneaking in from the lounge. Take your meal to your gate.
If you're stuck in small airplane part of concourse A for a while, take the escalators towards B. There are far better amenities & quiet in the Int'l section of A.
Well, like others said, the best place on this airport is FIVE GUYS. Also, other thing to avoid about this airport: UNITED AIRLINES, they will always screw you up !
Signalisation, geography, and processes are terrible but staff from airport (Security, pass control, etc.) very friendly compensates for the failures in infrastructure.
Five Guys has the best cheeseburgers. There's two locations: one in Terminal A and one in Terminal B. If you plan to have fries, you're better off with a single patty.
When arriving on an international flight, try to stay at the front of the mobile loungebus. This will put you in pole position to not have as long a passport line (unless 2 other 747s just unloaded!)
Subway is the best thing to grab before an early A.M. cross-country flight. I grab a foot-long sub so I can eat it at lunch time East Coast time (somewhere above the Rockies).
Concourse B is the most airy, open, bright terminal in all of Dulles. Even has a good assortment of food options. If you leave out of A, C, or D, they're a little gloomier.
This airport must be the reason why people advise to arrive three hours before international flights. Difficult to get to, slow lines once you do, and long distances to gates.