Originally Posted by
gfunkdave
Not sure if it's "flagship" or not, but here are a couple:
UA 1/2 are ORD-HNL
SQ 1/2 are SFO-HKG-SIN
BA 1/2 are SNN-JFK
BA 1/2 were used to be LHR-JFK on one of the Concorde flights.
As for more #1s:
-JL 1 = SFO-TYO
-DL 1 = JFK-LHR (interesting that they use an odd number going east)
-KE 1 = ICN-NRT-LAX (another one that doesn't conform with the typical "east-west" thing)