Cheapest return flights from Seattle (SEA) to Seoul (ICN), October

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
05 Oct 18 Oct Frontier Airlines
13 Oct 11 Nov Cathay Pacific
31 Oct 14 Nov Frontier Airlines
21 Oct 03 Nov Cathay Pacific
20 Oct 25 Oct Cathay Pacific
20 Oct 06 Nov Alaska Airlines
07 Oct 21 Oct Alaska Airlines
17 Oct 26 Oct Alaska Airlines
08 Oct 29 Oct Alaska Airlines
18 Oct 26 Oct Alaska Airlines
01 Oct 11 Oct Alaska Airlines
15 Oct 05 Nov Alaska Airlines
17 Oct 05 Nov Alaska Airlines
15 Oct 27 Nov Alaska Airlines
30 Oct 15 Nov Alaska Airlines
16 Oct 06 Nov Alaska Airlines
16 Oct 31 Oct Alaska Airlines
02 Oct 14 Oct Frontier Airlines
15 Oct 15 Nov Alaska Airlines
17 Oct 25 Oct Alaska Airlines
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Updated Jul 13, 2026.

About these fares

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