Cheapest return flights from Seattle to Singapore in October from 537€

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

Return flights

12 Oct - 19 Oct Philippine Airlines
03 Oct - 19 Oct Philippine Airlines
16 Oct - 26 Oct Air Canada
30 Oct - 13 Nov Air Canada
23 Oct - 31 Oct Air Canada
21 Oct - 30 Oct Air Canada
13 Oct - 20 Oct Asiana Airlines
15 Oct - 22 Oct Korean Air
09 Oct - 16 Oct United
30 Oct - 13 Nov Singapore Airlines direct
23 Oct - 31 Oct Singapore Airlines direct
14 Oct - 16 Nov WestJet
16 Oct - 26 Oct 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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