Cheapest one-way flights from Singapore to Seattle in October from $427

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

One-Way flights

28 Oct Singapore Airlines direct
25 Oct United
20 Oct United
11 Oct United
07 Oct United
06 Oct Air Canada
07 Oct Singapore Airlines direct
25 Oct Singapore Airlines direct
11 Oct Singapore Airlines direct
03 Oct Singapore Airlines direct

Also check the deals for return flights from Singapore to Seattle 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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