Cheapest one-way flights from Seattle to Seoul in December from 394€

AirHint found the following cheapest one-way flights from Seattle (SEA) to Seoul (ICN) in December 2025 (see full year).

One-Way flights

02 Dec Air Canada
31 Dec Air Canada
28 Dec Air Canada
31 Dec Asiana Airlines direct
28 Dec Asiana Airlines direct
14 Dec Asiana Airlines direct
24 Dec Asiana Airlines direct
02 Dec Asiana Airlines direct
19 Dec Asiana Airlines direct
21 Dec Delta direct

Also check the deals for return flights from Seattle to Seoul in December.

Skyscanner

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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