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

Return flights

01 Nov - 15 Nov	Hainan Airlines
01 Nov - 29 Nov	Hainan Airlines
01 Nov - 14 Nov	Hainan Airlines
01 Nov - 10 Nov	Hainan Airlines
27 Nov - 03 Dec	Philippine Airlines
20 Nov - 04 Dec	Korean Air
01 Nov - 30 Nov	Delta	direct
01 Nov - 15 Nov	Delta	direct
01 Nov - 14 Nov	Delta	direct
22 Nov - 21 Dec	Delta	direct
01 Nov - 10 Nov	Delta	direct
01 Nov - 29 Nov	Delta	direct
20 Nov - 04 Dec	Delta	direct

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

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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Cheapest return flights from Seattle to Shanghai in November from 677€

Return flights