Originally Posted by
mikeyfly
Grab your seats for free now - and hope they hang around - put your AA number in the booking
The OP isn't flying until September, so can't get pre-allocation for free at the moment.
Originally Posted by
thoward8111
I am AA Gold Member (soon to be gone) and booked through AA on BA in Club World in September. When is the best time to purchase seats on the 744 upper deck?
You should be able to pay for seat pre-allocation at any time after your booking is ticketed. The best time for doing this is when there's a seat available that you're prepared to pay for.
Remember that only a limited selection of seats is available if you need to pay: 60B (on some flights), 63AB, 63JK and 64B. The others will not become available until you can select for free, whether in advance by reason of status or booking class, or because you're doing it via online check-in. 64A is a bassinet position, so is often very difficult to get in advance by any means.