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

20 dates in October, from $ 821. Book in one tap, or check whether to buy now or wait.

One-wayReturn
Dates, airline, and price
Dates Airline Price
26 Oct 3 Nov Cathay Pacific
20 Oct 6 Nov Cathay Pacific
27 Oct 31 Oct Cathay Pacific
17 Oct 25 Oct Alaska Airlines
17 Oct 26 Oct Alaska Airlines
31 Oct 14 Nov Alaska Airlines
16 Oct 26 Oct Alaska Airlines
29 Oct 7 Nov Cathay Pacific
15 Oct 27 Oct Cathay Pacific
15 Oct 15 Nov Hainan Airlines
16 Oct 25 Oct Cathay Pacific
16 Oct 31 Oct Alaska Airlines
16 Oct 23 Oct Alaska Airlines
16 Oct 18 Oct EVA Air
30 Oct 7 Nov EVA Air
19 Oct 24 Nov Delta
Direct Flight
19 Oct 1 Nov Delta
Direct Flight
27 Oct 31 Oct Delta
Direct Flight
26 Oct 3 Nov Delta
Direct Flight
20 Oct 6 Nov Delta
Direct Flight
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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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