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

Return flights

28 Sep - 14 Oct	AirAsia
24 Sep - 14 Oct	AirAsia
28 Sep - 10 Oct	AirAsia
22 Sep - 10 Oct	AirAsia
24 Sep - 10 Oct	AirAsia
21 Sep - 10 Oct	AirAsia
22 Sep - 27 Sep	AirAsia
24 Sep - 27 Sep	AirAsia
21 Sep - 27 Sep	AirAsia
18 Sep - 27 Sep	AirAsia
08 Sep - 20 Sep	Air India
28 Sep - 30 Sep	AirAsia
08 Sep - 27 Sep	AirAsia
22 Sep - 30 Sep	AirAsia
22 Sep - 28 Sep	AirAsia
24 Sep - 30 Sep	AirAsia
28 Sep - 01 Oct	AirAsia
22 Sep - 01 Oct	AirAsia
24 Sep - 01 Oct	AirAsia
21 Sep - 01 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 $401

Return flights