780 USD is a decent fare.

You might want to check the MR (mileage run)forum. Fellow FTers post many good deals/ promos/ fare mistake they find.

You can also check the ITA software website. It's a very powerrful/ flexible search tool. There are more explanation in the MR forum too (just perform a search).

Finally, you can also try to find cheaper tickets through ticket consolidator. For asian destinations, and since you are fkying out of NYC you might want to check travel agents in chinatown