Cheapest return flights from Seattle to Shanghai in September from $718

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

Return flights

15 Sep - 24 Sep Air Canada
09 Sep - 16 Sep Air Canada
17 Sep - 24 Sep Asiana Airlines
19 Sep - 22 Sep Korean Air
09 Sep - 16 Sep Delta direct
15 Sep - 24 Sep Delta direct
17 Sep - 24 Sep Delta direct
19 Sep - 22 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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