Originally Posted by
caverunner17
They're code-sharing with ANA, so although UA metal doesn't go there, ANA does on a UA flight number.
As is now the case with BKK, JKT and other cities in the region.
There is simply insufficient high value business travel to these locations, particularly BKK and SGN which are filled with tourists. So UA happy to fill its TPAC planes and keep frequent service to NRT/HND which does support high value O/D traffic.