Fare of the Day: Boston, MA (BOS) to Beijing, China (PEK). $690 RT, including all taxes. Winter travel. Flights on Air Canada found via www.vayama.com
We found this fare on select dates in the months of November, December, and January. Flights departing or returning on weekend days are about $15 more. Some sample itineraries are: Nov. 15 to 27, Dec. 2 to Dec. 10, and Jan. 5 to Jan. 20.
This fare is not available every day, so you must play around with dates to get this cheaper price to appear.