Cheapest return flights from San Jose to Seoul in January from $615

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

Return flights

15 Jan - 22 Jan Alaska Airlines
11 Jan - 24 Jan Alaska Airlines
21 Jan - 02 Feb Alaska Airlines
25 Jan - 02 Feb Alaska Airlines
31 Jan - 05 Feb Alaska Airlines
22 Jan - 09 Feb Alaska Airlines
24 Jan - 08 Feb Alaska Airlines
29 Jan - 01 Feb Alaska Airlines
17 Jan - 24 Jan Alaska Airlines
23 Jan - 31 Jan Alaska Airlines
16 Jan - 30 Jan Alaska Airlines
22 Jan - 26 Jan Alaska Airlines
21 Jan - 26 Jan Alaska Airlines
29 Jan - 02 Feb Alaska Airlines
09 Jan - 29 Jan Alaska Airlines
16 Jan - 25 Jan Alaska Airlines
19 Jan - 29 Jan Korean Air
21 Jan - 18 Feb Korean Air
20 Jan - 17 Feb Korean Air
30 Jan - 20 Feb Korean Air

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

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