Originally Posted by
pudgym29
This is heuristic on my part. I have a perception that as a number of international airlines move their Tokyo operation from Narita to Haneda, another carrier which is remaining at Narita will have a drastic airfare sale on flights there which would succeed at getting me to fly it instead of one of the relocators.
SQ already sort of does this. On WAS-TYO, a route I look at often, the UA/NH nonstops are regularly around $2k in Y and around $4k in PY, while AS/SQ via LAX is often only half as much. AC also tends to be cheap in all cabins relative to the US and JP carriers.