Navigating DCA: Terminal B to Terminal A
 

Quickie: is it possible to walk from Terminal B to Terminal A in DCA without having to go through security again? The map indicates it's possible but last time I was there, I recall that the 2 terminals were separated by renovations and that crossing between them wasn't possible.

Nope...
 

Sorry, both terminals are not connected behind the security firewall, and I don't think there are any plans to do allow pax to transfer among any of the terminals behind security--after all, we have to "enhance" the security by forcing people to go through security unnecessarily often. :rolleyes: But I'd love to be wrong! :)

Although I *think* US might have a shuttle between Terminal C & D, since US has flights out of both terminals, but I haven't been there in a while.

Nope, no shuttle between the C and B piers (there is no Terminal D at DCA). US Airways only has two gates on the Center/B pier, but it's still a pain to have to reclear security if you have a connecting flight or want to use the US Airways Club on the C pier.

All three piers of terminal B and terminal A are separate security zones. You'll need to re-clear security every time when moving between these.... Additionally, terminal A is a 5-10 min walk from terminal B.