Cheapest return flights from Seattle to Seoul in December from 741€

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

Return flights

02 Dec - 27 Dec Air Canada
02 Dec - 27 Dec Asiana Airlines direct
20 Dec - 27 Dec Air Canada
13 Dec - 03 Jan Asiana Airlines direct
15 Dec - 10 Jan Delta
15 Dec - 10 Jan Asiana Airlines direct
20 Dec - 27 Dec Asiana Airlines direct
21 Dec - 03 Jan Turkish Airlines
21 Dec - 03 Jan Asiana Airlines direct

Also check the deals for one-way flights from Seattle to Seoul in December.

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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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