Cheapest one-way flights from San Jose to Seoul in December from $612

AirHint found the following cheapest one-way flights from San Jose (SJC) to Seoul (ICN) in December 2025 (see full year).

One-Way flights

31 Dec Alaska Airlines
30 Dec Alaska Airlines
15 Dec Hawaiian Airlines
10 Dec Hawaiian Airlines
05 Dec Alaska Airlines
29 Dec Delta
01 Dec Korean Air
25 Dec Alaska Airlines
24 Dec Korean Air
26 Dec Alaska Airlines

Also check the deals for return flights from San Jose to Seoul in December.

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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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