<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by ExMo:
If you are still looking at the BA or AA program, remember that you will only earn miles for trans-Atlantic flights from the airline whose program you belong to, i.e. AA flights only earn in AAdvantage, BA flights only earn in Exec Club.</font>
"Transatlantic" presumably not including Canada.