Charlie at Running with Miles has uncovered a great sale from Boston to Beijing (leaving on American and returning on JAL) starting around $445. Note that while other cities are coming up at cheap prices in Google Flights, those prices are jumping at the final booking stage. However, many are coming up through the OTAs listed at Momondo. Keep an eye on your city as prices may be fluctuating as they did with the European sale we reported last night.
Example dates and fares – click images to go to Google Flights/Momondo
Boston to Beijing, October 19-26th:
These prices are available for departures as soon as tomorrow and are available at scattered times through the end of the schedule, with the greatest availability in October and November.
Hartford, CT from October 24th-November 2nd:
Orlando, same dates:
Montreal (note that the cheapest result, Gate 1, prices the flight as $669 Canadian dollars, which is about $500 USD):
Many other cities may be possible. If you find other cities, let us know in the comments. I have not looked at these through AA Vacations, but there may be deals to be found there as well.