AirHint found the following cheapest return flights from Seattle (SEA) to Shanghai (PVG) in February 2026 (see full year).

Return flights

02 Feb - 18 Feb	Korean Air
02 Feb - 10 Feb	Korean Air
26 Feb - 10 Mar	Hainan Airlines
26 Feb - 05 Mar	Hainan Airlines
18 Feb - 25 Feb	Philippine Airlines
15 Feb - 25 Feb	Delta	direct
03 Feb - 24 Feb	Delta	direct
02 Feb - 10 Feb	Delta	direct
02 Feb - 18 Feb	Delta	direct
12 Feb - 23 Feb	Korean Air
21 Feb - 27 Feb	Air Canada
26 Feb - 10 Mar	Delta	direct
26 Feb - 05 Mar	Delta	direct
13 Feb - 18 Feb	Philippine Airlines

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

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 February from $656

Return flights