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

Return flights

04 Dec - 14 Dec	Turkish Airlines
22 Dec - 28 Dec	Ryanair
01 Dec - 31 Dec	Aer Lingus
16 Dec - 27 Dec	Turkish Airlines
29 Dec - 12 Jan	Turkish Airlines
27 Dec - 11 Jan	SriLankan Airlines
18 Dec - 27 Dec	Turkish Airlines
27 Dec - 10 Jan	Aer Lingus
19 Dec - 07 Jan	SriLankan Airlines
26 Dec - 10 Jan	British Airways
20 Dec - 01 Jan	Aer Lingus
18 Dec - 02 Jan	SriLankan Airlines
27 Dec - 15 Jan	Emirates
27 Dec - 03 Jan	Aer Lingus
23 Dec - 04 Jan	Turkish Airlines
20 Dec - 31 Dec	Qatar Airways

Also check the deals for one-way flights from Dublin to Colombo 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 Dublin to Colombo in December from $861

Return flights