Cheapest return flights from San Jose to Seoul in December from $880

Best time to book flights for San Jose (SJC) to Seoul (ICN) flights at AirHint

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

Return flights

01 Dec - 30 Dec Korean Air
08 Dec - 14 Dec Korean Air
12 Dec - 30 Dec Korean Air
15 Dec - 31 Dec Korean Air
13 Dec - 31 Dec Korean Air
14 Dec - 31 Dec Korean Air
12 Dec - 31 Dec Korean Air
15 Dec - 09 Jan Korean Air
17 Dec - 08 Jan Korean Air
16 Dec - 08 Jan Korean Air
15 Dec - 08 Jan Korean Air
15 Dec - 07 Jan Korean Air
16 Dec - 07 Jan Korean Air
17 Dec - 07 Jan Korean Air
18 Dec - 08 Jan Korean Air
20 Dec - 10 Jan Korean Air
11 Dec - 05 Jan Hawaiian Airlines

Also check the deals for one-way 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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