Reply To: Transfering AA miles to BABack to Forum
kmcottrell as is stated above you cannot use BA Miles to upgrade on any airline other than BA.
Ditto you cannot use AAdvantage miles to upgrade on any airline other than AA.
HOWEVER there is a single caveat to that, as I seem to recall it IS possible to use Asia Miles to upgrade on BA, apparently.
There really is no need to go transferring miles between AA and BA or vice versa as most of the flights each airline runs can be redeemed using each others’ mileage scheme.