Cheapest return flights from Seattle to Seoul in January from 684€

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

Return flights

21 Jan - 28 Jan Air Canada
25 Jan - 28 Jan Air Canada
26 Jan - 28 Jan Air Canada
22 Jan - 28 Jan Korean Air direct
23 Jan - 28 Jan Korean Air direct
24 Jan - 28 Jan Korean Air direct
25 Jan - 28 Jan Korean Air direct
24 Jan - 31 Jan Asiana Airlines
21 Jan - 28 Jan Korean Air direct
18 Jan - 24 Jan Korean Air direct
31 Jan - 07 Feb Delta direct
18 Jan - 27 Feb Delta direct
30 Jan - 04 Feb Alaska Airlines

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

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