Cheapest return flights from Seattle to Seoul in January from $753

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

Return flights

18 Jan - 25 Jan Air Canada
31 Jan - 07 Feb Air Canada
14 Jan - 30 Jan Alaska Airlines
18 Jan - 25 Jan Alaska Airlines direct
31 Jan - 07 Feb Hawaiian Airlines direct
05 Jan - 26 Jan Air Canada
14 Jan - 30 Jan Delta direct
05 Jan - 26 Jan Delta direct
02 Jan - 10 Jan Delta
02 Jan - 10 Jan Korean Air direct

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

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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