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

Return flights

02 Dec - 08 Dec	AirAsia
03 Dec - 08 Dec	AirAsia
16 Dec - 26 Jan	AirAsia
17 Dec - 26 Jan	AirAsia
25 Dec - 26 Jan	Cathay Pacific
01 Dec - 10 Dec	AirAsia
04 Dec - 09 Dec	Cathay Pacific
03 Dec - 09 Dec	Cathay Pacific
06 Dec - 13 Dec	AirAsia
06 Dec - 12 Dec	Air India
09 Dec - 15 Dec	Cathay Pacific
07 Dec - 17 Dec	Thai Airways
10 Dec - 25 Dec	Malaysia Airlines
27 Dec - 03 Jan	Cathay Pacific
16 Dec - 26 Jan	SriLankan Airlines	direct

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

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 December from 402€

Return flights