AirHint found the following cheapest return flights from Santa Ana (SNA) to Seoul (ICN) in September 2025 (see full year).

Return flights

17 Sep - 24 Sep	EVA Air
17 Sep - 23 Sep	EVA Air
30 Sep - 14 Oct	EVA Air
17 Sep - 08 Oct	EVA Air
22 Sep - 08 Oct	EVA Air
17 Sep - 21 Sep	EVA Air
27 Sep - 10 Oct	EVA Air
22 Sep - 31 Oct	China Airlines
30 Sep - 09 Oct	EVA Air
30 Sep - 17 Oct	China Airlines
27 Sep - 09 Oct	China Airlines
27 Sep - 17 Oct	EVA Air
21 Sep - 28 Sep	Alaska Airlines
20 Sep - 01 Oct	EVA Air
20 Sep - 23 Sep	China Airlines
26 Sep - 28 Sep	Alaska Airlines
25 Sep - 27 Sep	Alaska Airlines
20 Sep - 27 Sep	Alaska Airlines
17 Sep - 26 Sep	China Airlines
23 Sep - 30 Sep	Korean Air

Also check the deals for one-way flights from Santa Ana to Seoul in September.

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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Cheapest return flights from Santa Ana to Seoul in September from $1081

Return flights