Cheapest return flights from Seattle to Singapore in August from $696

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

Return flights

31 Aug - 07 Sep Philippine Airlines
17 Aug - 27 Sep Philippine Airlines
18 Aug - 27 Sep Air Canada
30 Aug - 26 Sep Singapore Airlines
23 Aug - 25 Sep Air Canada
24 Aug - 31 Aug Philippine Airlines
16 Aug - 27 Sep Asiana Airlines
12 Aug - 24 Aug Asiana Airlines
13 Aug - 17 Aug United
12 Aug - 22 Aug United
08 Aug - 20 Aug United
09 Aug - 21 Aug United
02 Aug - 19 Aug Korean Air
08 Aug - 24 Aug Korean Air
09 Aug - 17 Aug United
02 Aug - 17 Aug United

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

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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