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

Return flights

08 Dec - 15 Dec	Pegasus Airlines
04 Dec - 16 Jan	Pegasus Airlines
02 Dec - 15 Dec	Ryanair
01 Dec - 09 Dec	Ryanair
03 Dec - 15 Dec	Pegasus Airlines
01 Dec - 11 Dec	Ryanair
09 Dec - 16 Dec	Pegasus Airlines
09 Dec - 19 Dec	Pegasus Airlines
01 Dec - 13 Dec	Ryanair
09 Dec - 21 Dec	Ryanair
02 Dec - 20 Dec	Pegasus Airlines
13 Dec - 13 Jan	Ryanair
10 Dec - 08 Jan	Pegasus Airlines
01 Dec - 08 Jan	Ryanair
03 Dec - 15 Jan	Ryanair
10 Dec - 15 Jan	Ryanair
17 Dec - 08 Jan	Pegasus Airlines
07 Dec - 04 Jan	Pegasus Airlines
20 Dec - 04 Jan	Ryanair
22 Dec - 01 Jan	Pegasus Airlines

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 $559

Return flights