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Cheapest one-way flights from Seattle (SEA) to Seoul (ICN), October

10 dates in October, from $ 400. Book in one tap, or check whether to buy now or wait.

One-way Return

Dates, airline, and price
Dates	Airline	Price
26 Oct	Cathay Pacific
27 Oct	Cathay Pacific
15 Oct	Hainan Airlines

28 Oct	Alaska Airlines
29 Oct	Alaska Airlines
25 Oct	Alaska Airlines
19 Oct	China Airlines
14 Oct	Korean Air Direct Flight
18 Oct	Korean Air Direct Flight
19 Oct	Korean Air Direct Flight

Cheapest deals for the full year

Deals for return flights from Seattle to Seoul in October.

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Updated Oct 12, 2026.

About these fares

These results come from our latest search across airlines for your currency. Prices change quickly and are not locked until you complete booking—always confirm the total and fare rules on the partner site.

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Cheapest one-way flights from Seattle (SEA) to Seoul (ICN), October

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