You can fly from NYC to Hong Kong on Asiana round trip for just $549 when you book on Orbitz. You can also find the same price from Chicago, Seattle and LA.
I get the low rate of many date combinations in March for NYC. You can play around and look for dates that suit you better. There’s one stop in Seoul.
It’s valid for travel on the outbound from March, 2016 to April 30th, 2016 but you must book today.
HT: theflightdeal (also more instructions how to search on ITA)