Cheapest return flights from Seattle to Singapore in May from $704

Best time to book flights for Seattle (SEA) to Singapore (SIN) flights at AirHint

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

Return flights

13 May - 20 May Air Canada
07 May - 22 May Asiana Airlines
15 May - 01 Jun Air Canada
22 May - 26 Jun Air Canada
27 May - 17 Jun Air Canada
08 May - 13 May Asiana Airlines
23 May - 08 Jun Air Canada
29 May - 26 Jun Air Canada
19 May - 26 May United
03 May - 09 May Asiana Airlines
10 May - 17 May Air Canada
29 May - 26 Jun Singapore Airlines direct
24 May - 01 Jun Delta

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

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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