I'm surprised there's no commentary on the BOS situation here.

Terminal A got rebuilt a few years ago. It's big, and was originally the domain of Delta -- with half the checkin area empty. Then CO moved over to join their SkyTeam brother a year or so ago. CO left Terminal C to do this, home of United (though down a different concourse with separate security).

Then just this month, NW left Terminal E (the int'l terminal) to move to join the SkyTeam gang in Terminal A. So for now, Terminal A is all SkyTeam, all the time.

So now CO is joining *A. Will they move back to Terminal C? But given that I think B6 expanded in that area, there may not be room.