Your best travel bargain would be to get a Cathay-Pacific All Asia pass.
http://www.cathay-usa.com/offers/aap20012002.asp
Fly N. America (New York, LA or SF) to Hong Kong and 21 consecutive days of travel to any of 16 Asian cities, including Tokyo and Bangkok for US$999. You can increase the length of the pass to 30 days for an extra US$100.