Cheapest return flights from Seattle to Seoul in October from $876

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

Return flights

21 Oct - 28 Oct Japan Airlines
27 Oct - 06 Nov Japan Airlines
26 Oct - 07 Nov Japan Airlines
26 Oct - 06 Nov Japan Airlines
28 Oct - 05 Nov Japan Airlines
20 Oct - 10 Nov Japan Airlines
28 Oct - 13 Nov Japan Airlines
19 Oct - 07 Nov Japan Airlines
20 Oct - 29 Oct Japan Airlines
22 Oct - 29 Oct Japan Airlines
20 Oct - 27 Oct Japan Airlines
22 Oct - 27 Oct Japan Airlines
21 Oct - 27 Oct Japan Airlines
20 Oct - 06 Nov Japan Airlines
20 Oct - 07 Nov Japan Airlines
21 Oct - 07 Nov Japan Airlines
21 Oct - 26 Oct Japan Airlines
02 Oct - 18 Oct EVA Air
01 Oct - 09 Oct EVA Air
13 Oct - 21 Oct Hawaiian Airlines

Also check the deals for one-way flights from Seattle to Seoul 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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