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

Return flights

31 Dec - 21 Jan	Pegasus Airlines
29 Dec - 22 Jan	AJet
31 Dec - 31 Jan	Pegasus Airlines
28 Dec - 22 Jan	AJet
29 Dec - 17 Jan	Pegasus Airlines
30 Dec - 18 Jan	Pegasus Airlines
31 Dec - 19 Jan	Pegasus Airlines
29 Dec - 19 Jan	Pegasus Airlines
29 Dec - 21 Jan	AJet
31 Dec - 14 Jan	Pegasus Airlines
24 Dec - 31 Dec	Ryanair
25 Dec - 28 Dec	Pegasus Airlines
28 Dec - 31 Dec	AJet
24 Dec - 30 Dec	Ryanair
26 Dec - 28 Dec	Wizz Air
24 Dec - 27 Dec	Eurowings
26 Dec - 29 Dec	Wizz Air
24 Dec - 29 Dec	Ryanair
21 Dec - 26 Dec	Wizz Air UK
22 Dec - 27 Dec	Ryanair

Also check the deals for one-way flights from London 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 London to Colombo in December from 497€

Return flights