Cheapest one-way flights from Seoul to Seattle in January from $348

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

One-Way flights

31 Jan T'way Air
29 Jan T'way Air
16 Jan Hawaiian Airlines direct
25 Jan T'way Air
20 Jan HK Express
24 Jan T'way Air
15 Jan Eastar Jet
30 Jan Asiana Airlines direct
29 Jan Delta direct
31 Jan Korean Air direct

Also check the deals for return flights from Seoul to Seattle 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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