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

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
06 Dec 12 Dec Alaska Airlines
06 Dec 13 Dec Alaska Airlines
06 Dec 10 Dec Alaska Airlines
06 Dec 17 Dec Alaska Airlines
07 Dec 29 Dec Alaska Airlines
02 Dec 10 Jan Cathay Pacific
17 Dec 31 Dec Air Canada
16 Dec 30 Dec Air Canada
17 Dec 24 Dec Air Canada
21 Dec 31 Dec Air Canada
14 Dec 11 Jan Frontier Airlines
02 Dec 10 Jan Delta
Direct Flight
26 Dec 09 Jan Delta
Direct Flight
06 Dec 12 Dec Delta
Direct Flight
22 Dec 07 Jan Alaska Airlines
19 Dec 05 Jan Air Canada
21 Dec 07 Jan Air Canada
16 Dec 02 Jan Air Canada
14 Dec 11 Jan Delta
Direct Flight
19 Dec 05 Jan Asiana Airlines
Direct Flight
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deals for one-way flights from Seattle to Seoul in December.

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Updated Jul 13, 2026.

About these fares

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