If memory serves, PeoplExpress used Terminal D until being absorbed by Texas Air; that's probably why it was so busy in the 1980's. Alitalia's check-in counters were in Terminal D until the Terminal E renovations were completed (actually, they might have moved a few months before that). For now, only AirTran and charters depart from Terminal D (and the ambience of that area is somewhere between bus station and gas station bathroom). Terminal D has three gates which are all connected (behind security) by a bridge to Terminal E; the numbering of the gates in Terminal D (1C, 1D, 1E) is linked to the Terminal E gate numbering (1A, 1B).
I wouldn't call (even though Massport does it) what's happening to Terminal A "renovations." Complete demolition and construction of an entirely new structure would be more accurate. Without FIS facilities, it's unlikely that AZ
, or AM
(or even KE
if it were to return to BOS
) will move to Terminal A, though AF
's flights departed from Terminal C until recently. As an aside, it's a blessing that AF
no longer departs from C, since that added several hundred passengers every afternoon trying to go through a security checkpoint which is still woefully inadequate without the extra passengers. Hopefully the design of the new Terminal A includes enough space for about 8 lanes at security. My guess is that CO
, at least, will go with DL
(back) to Terminal A, since they're both codesharing very extensively out of BOS
. It's less clear what will happen with NW
. Then again, CO
might well stay in Terminal C to limit the number of gates available to jetBlue. There might well be little point in that if US Airways fails; that would make nearly 20 jet gates in Terminal B available at the airport.