Cheapest return flights from Seattle to Singapore in August from 614€

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

Return flights

07 Aug - 14 Aug Korean Air
13 Aug - 20 Aug Korean Air
22 Aug - 23 Sep Air Canada
21 Aug - 23 Sep Air Canada
05 Aug - 03 Sep United
11 Aug - 18 Aug Asiana Airlines
21 Aug - 31 Aug United
07 Aug - 05 Sep United
22 Aug - 08 Sep United
10 Aug - 17 Aug Asiana Airlines
26 Aug - 30 Aug United
08 Aug - 15 Aug Asiana Airlines
17 Aug - 23 Aug Korean Air
03 Aug - 06 Aug Korean Air
08 Aug - 14 Aug Air Canada

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.

Book a cheap hotel in Singapore

Cheap car rent in Singapore

Feel free to contact us with any feedback or request another flight research.