Cheapest return flights from Seattle to Seoul in December from 896€

AirHint found the following cheapest return flights from Seattle (SEA) to Seoul (ICN) in December 2026 (see full year).

Return flights

10 Dec - 30 Dec Korean Air direct
22 Dec - 08 Jan Asiana Airlines direct
12 Dec - 23 Dec Korean Air direct
12 Dec - 30 Dec Korean Air direct
21 Dec - 06 Jan Lufthansa
17 Dec - 04 Jan Lufthansa
14 Dec - 28 Dec Air Canada
21 Dec - 06 Jan Korean Air direct
14 Dec - 26 Dec Air Canada
17 Dec - 04 Jan Korean Air direct

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

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