There is a flight at midnight on AA metal from LAX and the 2am JL from JFK. I imagine AA will want to put you on the LAX flight. AA can also get you to LAX or JFK on their metal or AS. There are of course options on other airlines but given the timings I don’t think they will be better

If you know at ORD you are going to miss your flight, you can probably be put on the JL nonstop too.

By HAN I am not sure if your final destination is Hanoi or you meant to say HND