Cheapest one-way flights from Seattle to Seoul in January from 374€

AirHint found the following cheapest one-way flights from Seattle (SEA) to Seoul (ICN) in January 2026 (see full year).

One-Way flights

12 Jan Asiana Airlines direct
24 Jan Asiana Airlines direct
07 Jan United
29 Jan United
30 Jan United
29 Jan Asiana Airlines direct
04 Jan Asiana Airlines direct
07 Jan Korean Air direct
30 Jan Korean Air direct
03 Jan United

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

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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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