Originally Posted by thadocta
Just bear in mind though that you cannot accrue miles to disAAdvantage when flying from London to the Untied States on BA, so joining disAAdvantage will limit your airline options a bit. Might be worth checking out the other programs, QF, EI, IB and so on.
Dave
The issue of BA/AA miles between the U.S. and London was more important when BA service was significantly better than AA's. Nowadays it seems that although AA hasn't gotten any better, BA corporate is doing everything possible to lower standards and disappoint their pax. We used to forego miles to fly BA on the North Atlantic, and are about to try a couple of trips on AA. Hope we're not too misled about their service, in the front at least.