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

Return flights

21 Sep - 11 Oct	AirAsia
07 Sep - 26 Sep	AirAsia
09 Sep - 26 Sep	AirAsia
21 Sep - 26 Sep	AirAsia
07 Sep - 18 Sep	AirAsia
07 Sep - 13 Sep	AirAsia
09 Sep - 18 Sep	AirAsia
01 Sep - 18 Sep	AirAsia
01 Sep - 07 Sep	AirAsia
20 Sep - 11 Oct	AirAsia
09 Sep - 13 Sep	AirAsia
01 Sep - 13 Sep	AirAsia
21 Sep - 02 Oct	AirAsia
20 Sep - 02 Oct	AirAsia
13 Sep - 02 Oct	AirAsia

Also check the deals for one-way flights from Kochi 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 Kochi to Seoul in September from $490

Return flights