Cheapest return flights from Seattle to Singapore in August from $712

AirHint found the following cheapest return flights from Seattle (SEA) to Singapore (SIN) in August 2026 (see full year).

Return flights

22 Aug - 30 Aug United
06 Aug - 20 Aug Singapore Airlines direct
30 Aug - 06 Sep Delta
28 Aug - 08 Sep ANA

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

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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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