Originally Posted by
nguyenm9
So I need to get to NRT from NYC. China Air has flights ~1000 while AA is closer to ~1800. I see China Air codeshares with Hawaiian as does AA. I don't suppose there's some transitive property rule I could take advantage of as I'd really like to be able to upgrade on the trip back

Not sure which cabin, travel date(s) or if the prices were r/t a/ but for o/w a/i ITA found $509 on 26/27 Apr, AA 321 JFK-LAX thence MH (codeshare on JL) 777.