Cheapest return flights from Seattle to Shanghai in September from $807

AirHint found the following cheapest return flights from Seattle (SEA) to Shanghai (PVG) in September 2025 (see full year).

Return flights

16 Sep - 19 Sep Hainan Airlines
12 Sep - 23 Sep Air Canada
10 Sep - 17 Sep Philippine Airlines
08 Sep - 15 Sep Korean Air
12 Sep - 27 Sep Alaska Airlines
08 Sep - 15 Sep Delta direct
12 Sep - 23 Sep Delta direct
12 Sep - 27 Sep Delta direct
15 Sep - 20 Oct Delta direct
16 Sep - 19 Sep Delta direct

Also check the deals for one-way flights from Seattle to Shanghai in September.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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