Originally Posted by
JimInOhio
Aren't all of the UA widebodies on Concourse C or the part of Concourse D that's close to C? It's doubtful the connection distance would be all that great and not require the train or tram.
I have seen UA doing IAD-LHR from B with 763, and I think maybe one other int'l flight too from A. Not sure why.
If you're lucky D to A can potentially be faster than, say D8 to C4, but that of course depends on luck.