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

Return flights

20 Oct - 16 Nov	AirAsia X
29 Oct - 26 Nov	Thai AirAsia X
19 Oct - 26 Oct	China Eastern
30 Oct - 14 Nov	AirAsia X
20 Oct - 28 Oct	AirAsia X
29 Oct - 02 Nov	AirAsia X
17 Oct - 14 Nov	AirAsia X
29 Oct - 11 Nov	AirAsia X
28 Oct - 13 Nov	AirAsia X
20 Oct - 02 Nov	AirAsia X
15 Oct - 09 Nov	Jin Air
31 Oct - 09 Nov	AirAsia X
18 Oct - 25 Oct	AirAsia X
20 Oct - 26 Oct	AirAsia X
21 Oct - 29 Oct	AirAsia X
20 Oct - 24 Oct	AirAsia X
27 Oct - 31 Oct	AirAsia X
27 Oct - 30 Oct	AirAsia X
15 Oct - 26 Oct	AirAsia X
20 Oct - 23 Oct	AirAsia X

Also check the deals for one-way flights from Seoul to Colombo 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 Seoul to Colombo in October from 314€

Return flights