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

Return flights

30 Jun - 22 Jul	Cathay Pacific
22 Jun - 08 Jul	Cathay Pacific
15 Jun - 19 Jun	Alaska Airlines
30 Jun - 31 Jul	Cathay Pacific
19 Jun - 25 Jun	Cathay Pacific
18 Jun - 25 Jun	Air Canada
18 Jun - 22 Jun	Air Canada
19 Jun - 22 Jun	Cathay Pacific
15 Jun - 18 Jun	Air Canada
15 Jun - 19 Jun	Delta	direct
19 Jun - 25 Jun	Delta	direct
18 Jun - 22 Jun	Delta	direct
19 Jun - 22 Jun	Delta	direct
30 Jun - 22 Jul	Delta	direct
30 Jun - 31 Jul	Delta	direct

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

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 June from $1061

Return flights