Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Oregon to Shanghai as you normally would.
Due to multiple factors, expect to potentially pay more when booking in December. For low rates, February can be a great choice for travel to Shanghai. Flights to Shanghai from Oregon in February are about $646 on average during February, but can be found for as low as $365.
||$348||$670||No cancel fee||69%|
||$367||$538||No cancel fee||67%|
||$381||$832||No cancel fee||71%|
||$499||$857||No cancel fee||N/A|