Cheapest return flights from Seattle to Singapore in October from 601€

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

Return flights

28 Oct - 06 Nov Air Canada
21 Oct - 30 Oct Air Canada
23 Oct - 28 Oct Air Canada
16 Oct - 21 Oct Air Canada
21 Oct - 01 Nov Air Canada
24 Oct - 20 Nov Air Canada
30 Oct - 15 Nov Air Canada
23 Oct - 19 Nov United
20 Oct - 31 Oct Asiana Airlines
21 Oct - 30 Oct Singapore Airlines direct
24 Oct - 20 Nov Singapore Airlines direct
28 Oct - 06 Nov Singapore Airlines direct
02 Oct - 05 Oct United
21 Oct - 01 Nov Singapore Airlines direct
16 Oct - 21 Oct Singapore Airlines direct
11 Oct - 18 Oct Singapore Airlines direct
30 Oct - 15 Nov Singapore Airlines direct

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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