Cheapest return flights from Seattle to Singapore in April from $594

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

Return flights

16 Apr - 28 Apr Singapore Airlines direct
07 Apr - 14 Apr Singapore Airlines direct
07 Apr - 21 Apr Singapore Airlines direct
25 Apr - 28 Apr Singapore Airlines direct
07 Apr - 20 Apr Asiana Airlines
07 Apr - 13 Apr Asiana Airlines
20 Apr - 29 Apr Asiana Airlines
05 Apr - 18 Apr Singapore Airlines direct
17 Apr - 23 Apr Asiana Airlines
05 Apr - 20 Apr Philippine Airlines
16 Apr - 02 May Air Canada

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

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