Cheapest return flights from San Jose to Seoul in September from $856

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 September 2025 (see full year).

Return flights

16 Sep - 29 Oct Korean Air
03 Sep - 29 Oct Korean Air
08 Sep - 29 Oct Korean Air
18 Sep - 29 Oct Korean Air
06 Sep - 20 Sep Korean Air
13 Sep - 20 Sep Korean Air
12 Sep - 19 Sep Korean Air
12 Sep - 20 Sep Korean Air
01 Sep - 15 Sep Korean Air
18 Sep - 23 Sep Korean Air
26 Sep - 10 Oct Korean Air
08 Sep - 10 Oct Korean Air
24 Sep - 08 Oct Korean Air
18 Sep - 27 Sep Korean Air
24 Sep - 05 Oct Korean Air
26 Sep - 05 Oct Korean Air
26 Sep - 04 Oct Korean Air
19 Sep - 30 Sep Korean Air

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

Skyscanner

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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