Originally Posted by irishguy28

Absolutely...

The BHD flights won't be going to T5 for as long as BA codeshares with EI (for precisely the same reasons that BA's services to SYD & SIN [same as QF's services on these routes] and to HEL [same as AY's services on this route] depart from T3).

BA could not sell tickets to a single destination on flights that may depart from different terminals - relying on every passenger to correctly decipher the flight number to get to the right terminal just would not work.