Well if one decides to vacay in Japan, may I suggest you look at ANA, particularly out of JFK in the spectacular "Room" business class suite.

From September onwards, JFK-BKK via HAN is $3700.

You can extend your layover in Tokyo for up to 30 days at the same price.

JAL and ANA both charging $8k for business NYC-Tokyo during the same period, adding Bangkok cuts over half!