While searching for the Qatar Airways $1,500 fare from Asia to the US, I came across a $573 business class rountrip fare from Bangkok to JFK on Xiamen Air. The routing is via Fuzhou (FOC) where Xiamen operates a 14 hour and 40 minute flight to JFK aboard one of their new 787s. Lucky reviewed their 787 business class product on a SEA-SZX flight back in October and was quite impressed with their soft product.
Back to the fare, I wanted to confirm that it was actually bookable before posting. It is…if you are flexible and act quickly. When using Google Flights, you should see a few $573 BKK-JFK fare dates in March 2016 for roundtrip business class . About 10 minutes ago (while I was confirming the booking) every day in March had availability, but now there are just a handful of available dates remaining. If you click the link to book with Xiamen, the fare is repriced to around $2,000 USD. However, the CheapOair and Orbitz links are still working for select dates. I was able to proceed all the way to the payment page for a few of the March dates (others returned a repricing error). Act now to take advantage of these while they last.
UPDATE: Please refer to the comments section below, “Z” class in this case is sadly economy 🙁
Note that Xiamen Air is a Delta Skyteam “group 3” partner.