Cheapest return flights from Seattle to Singapore in May from $522

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

Return flights

08 May - 22 May Singapore Airlines direct
07 May - 16 May Singapore Airlines direct
09 May - 16 May Singapore Airlines direct
07 May - 21 May United
01 May - 13 May United
15 May - 23 May Singapore Airlines
07 May - 21 May Singapore Airlines direct
25 May - 07 Jun United
27 May - 07 Jun United
15 May - 23 May Singapore Airlines direct
19 May - 22 May Singapore Airlines
21 May - 31 May Air Canada
30 May - 27 Jun Singapore Airlines direct
26 May - 07 Jun Asiana Airlines
23 May - 13 Jun Asiana Airlines
28 May - 07 Jun United
29 May - 07 Jun Asiana Airlines
30 May - 07 Jun United
24 May - 06 Jun Air Canada
23 May - 07 Jun Asiana Airlines

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

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