I just realized that we could fly DFW-ORD, ORD-LHR, LHR-BHD on AA. ORD-LHR would be on a 777 with first class. Would there be high taxes flying into and out of LHR on BA booked thru AA? I wouldn't mind checking out Northern Ireland. I've heard it's beautiful. We could then take the train to Dublin.

Maybe book a one-way on AA to BHD and home from DUB on UA. Since I have miles on both airlines, It would be easier and faster to earn enough points to go next year. I think it would take 125,000 on AA and 100,000 on UA (business/first). I could then concentrate on hotel points. What do you guys (and Gals) think?