Actually, the plan for gate allocations is somewhat different - here is where it stands once Concourse A opens in June 2004:

A Concourse: Delta, American, Frontier, some charters, (maybe America West & JetBlue)

B Concourse: Southwest, Horizon

C Concourse: Alaska, Horizon

D Concourse: Alaska

N Satellite: United, US Airways, Air Canada, Air Canada Jazz

S Satellite: All international carriers & international arrivals, Northwest, Continental, Hawaiian (America West and JetBlue if not on A)

Of course this is subject to change but that is how at looks today. BA will not need to move the Terraces Lounge.