Originally Posted by
number_6
CX flies HKG-AMS non-stop but might not have F service on that route (other alternatives to LHR with F on CX are FCO and FRA).
No F to AMS. HKG-CDG is another option with F, but, I would not waste European segments going CDG/FCO/FRA-LHR-AMS; I'd just fly into LHR. I think that FCO only has F seasonally (like JNB).
BA flights TATL earn AA miles only if they aren't to the US. So any of the BA flights to Canada (YYZ, YUL, YVR) earn, as do other NA flights such as LHR-MEX, and the dozen different caribbean flights. You could do LHR-NAS for example and then NAS-MIA-DFW. However the YVR flight is a good one.
Actually, the NAS flight is operated by a 763, which no longer has First Class, so that flight would not be a wise choice on an AONE ticket. I am pretty that BGI (Barbados) is the only Carribean destination with F service and that is served from LGW, not LHR.
The longest LHR-North America flight is LHR-MEX at 5541 miles (LHR-LAX is 5456 miles). BA flies this route, but not daily. BA flies LHR-YVR daily, but it is "only" 4723 miles.