AirHint found the following cheapest return flights from Colombo (CMB) to Seoul (ICN) in October 2025 (see full year).

Return flights

28 Oct - 03 Nov	AirAsia
01 Oct - 21 Oct	AirAsia
01 Oct - 22 Oct	AirAsia
26 Oct - 01 Nov	AirAsia
01 Oct - 08 Oct	AirAsia
30 Oct - 09 Nov	AirAsia
01 Oct - 11 Oct	AirAsia
03 Oct - 23 Oct	AirAsia
01 Oct - 15 Oct	AirAsia
01 Oct - 14 Oct	AirAsia
04 Oct - 23 Oct	AirAsia
21 Oct - 23 Oct	AirAsia
30 Oct - 06 Nov	AirAsia
03 Oct - 21 Oct	AirAsia
25 Oct - 14 Nov	Cathay Pacific
28 Oct - 17 Nov	Cathay Pacific
21 Oct - 06 Nov	AirAsia
27 Oct - 06 Nov	AirAsia
28 Oct - 06 Nov	AirAsia
25 Oct - 06 Nov	AirAsia

Also check the deals for one-way flights from Colombo to Seoul in October.

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 Colombo to Seoul in October from 250€

Return flights