Originally Posted by
camdentown
I believe BA release the initial tranche of reward seats (2 in Club World) 364 days in advance. So I think they will mostly be gone on popular routes if you are looking 331 days ahead.
Other seats may become available after that, which is route and load dependant.
I am pretty sure it is 355 days that BA opens its calendar and releases seats. Which means of course as you state that BA and some other award programs have access to the seats before they are available for booking by AA. So there is no guarantee obviously that the seats BA guarantees to release at calendar open will be there by the time AA can book them.