Cheapest return flights from Seoul to Seattle in December from $335

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

Return flights

20 Dec - 31 Dec Hawaiian Airlines direct
27 Dec - 31 Dec Hawaiian Airlines direct
27 Dec - 03 Jan Hawaiian Airlines direct
18 Dec - 28 Dec Hawaiian Airlines direct
26 Dec - 03 Jan Hawaiian Airlines direct
21 Dec - 27 Dec Hawaiian Airlines direct
20 Dec - 27 Dec Hawaiian Airlines direct
08 Dec - 04 Jan Asiana Airlines direct
22 Dec - 30 Dec Asiana Airlines direct
21 Dec - 30 Dec Asiana Airlines direct
02 Dec - 08 Dec Asiana Airlines direct
09 Dec - 31 Dec Asiana Airlines direct
25 Dec - 31 Dec Asiana Airlines direct
23 Dec - 13 Jan Asiana Airlines direct
21 Dec - 13 Jan Asiana Airlines direct
15 Dec - 08 Jan Asiana Airlines direct
23 Dec - 06 Jan Asiana Airlines direct
22 Dec - 04 Jan Asiana Airlines direct
21 Dec - 05 Jan Asiana Airlines direct
20 Dec - 03 Jan Hawaiian Airlines direct

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