Cheapest one-way flights from Seattle to Seoul in December from 376€

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

One-Way flights

03 Dec Air Canada
03 Dec Asiana Airlines direct
07 Dec Asiana Airlines direct
08 Dec Asiana Airlines direct
05 Dec Asiana Airlines direct
11 Dec Korean Air direct
06 Dec Hawaiian Airlines
06 Dec Delta direct
16 Dec Korean Air
16 Dec Asiana Airlines 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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