Cheapest return flights from Seattle to Singapore in October from $602

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

Return flights

14 Oct - 16 Nov Singapore Airlines direct
04 Oct - 31 Oct Singapore Airlines direct
18 Oct - 04 Nov Singapore Airlines direct
24 Oct - 02 Nov Singapore Airlines direct
12 Oct - 16 Nov Philippine Airlines
12 Oct - 15 Nov Philippine Airlines
12 Oct - 14 Nov Singapore Airlines
13 Oct - 16 Nov Air Canada
17 Oct - 03 Nov Air Canada
06 Oct - 15 Oct Air Canada
12 Oct - 14 Nov Singapore Airlines direct
12 Oct - 16 Nov Singapore Airlines direct
04 Oct - 18 Oct Air Canada

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

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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