Cheapest return flights from Seattle to Seoul in January from $875

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

Return flights

21 Jan - 07 Feb Japan Airlines
12 Jan - 18 Feb Japan Airlines
14 Jan - 11 Feb Japan Airlines
29 Jan - 25 Feb Japan Airlines
21 Jan - 04 Feb Japan Airlines
30 Jan - 06 Feb Japan Airlines
05 Jan - 15 Jan Japan Airlines
08 Jan - 15 Jan Japan Airlines
09 Jan - 20 Jan ANA
01 Jan - 01 Feb ANA
03 Jan - 28 Feb ANA
12 Jan - 16 Feb Japan Airlines
02 Jan - 11 Jan ANA
14 Jan - 20 Jan Alaska Airlines
13 Jan - 20 Jan American Airlines

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

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