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

Return flights

01 Aug - 08 Aug	Delta	direct
03 Aug - 17 Aug	Delta	direct
03 Aug - 10 Aug	Delta	direct
01 Aug - 31 Aug	Delta	direct
20 Aug - 25 Aug	Eastar Jet
10 Aug - 17 Aug	Korean Air
11 Aug - 27 Aug	Cathay Pacific
11 Aug - 27 Sep	Cathay Pacific
09 Aug - 27 Sep	Air Canada
20 Aug - 25 Aug	Delta	direct
11 Aug - 17 Aug	Delta
11 Aug - 27 Sep	Delta	direct
10 Aug - 17 Aug	Delta	direct
09 Aug - 27 Sep	Delta	direct

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

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.

Book a cheap hotel in Seattle

Cheap car rent in Seattle

Cheapest return flights from Shanghai to Seattle in August from $1067

Return flights