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

Return flights

25 Dec - 08 Jan	Etihad Airways
22 Dec - 20 Jan	IndiGo
30 Dec - 06 Jan	Air Arabia Abu Dhabi
23 Dec - 17 Jan	Air Arabia Abu Dhabi
21 Dec - 19 Jan	Etihad Airways
24 Dec - 31 Dec	Air Arabia Abu Dhabi
22 Dec - 08 Jan	Etihad Airways
22 Dec - 22 Jan	Etihad Airways
27 Dec - 04 Jan	Etihad Airways
22 Dec - 14 Jan	Etihad Airways
25 Dec - 10 Jan	Etihad Airways
21 Dec - 28 Dec	IndiGo
22 Dec - 29 Dec	IndiGo
22 Dec - 31 Dec	Etihad Airways
23 Dec - 30 Dec	IndiGo
22 Dec - 30 Dec	Etihad Airways

Also check the deals for one-way flights from Colombo to London 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 London in December from $571

Return flights