Cheapest return flights from Seattle to Seoul in October from $840

Best time to book flights for Seattle (SEA) to Seoul (ICN) flights at AirHint

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

Return flights

29 Oct - 10 Nov China Airlines
22 Oct - 01 Nov China Airlines
22 Oct - 02 Nov China Airlines
31 Oct - 15 Nov China Airlines
02 Oct - 18 Oct Alaska Airlines
26 Oct - 31 Oct China Airlines
09 Oct - 25 Oct EVA Air
31 Oct - 15 Nov Delta direct
26 Oct - 31 Oct Asiana Airlines direct
22 Oct - 01 Nov Asiana Airlines direct
22 Oct - 02 Nov Asiana Airlines direct
29 Oct - 10 Nov Asiana Airlines direct
09 Oct - 25 Oct Delta direct
02 Oct - 18 Oct Hawaiian Airlines direct
08 Oct - 05 Nov Korean Air direct

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

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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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