Thank you so much for your response, everyone.

Silly me (rookie) - I forgot to note that I need a round-trip flight.

Does anyone have any ideas on how to bump my 40K/30K/30K Delta/AA/US Air miles quickly to reach any of the 3 airlines' round-trip minimum to Japan? I recently got the initial sign-up bonuses for all three airlines using credit cards, so I'd need to go another route. (Chase Ultimate Rewards points, or something like that?)

thanks in advance.