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

Return flights

18 Dec - 09 Jan	IndiGo
02 Dec - 09 Dec	IndiGo
01 Dec - 08 Dec	Air Arabia
23 Dec - 06 Jan	IndiGo
24 Dec - 31 Dec	Air Arabia
03 Dec - 10 Dec	IndiGo
04 Dec - 11 Dec	IndiGo
14 Dec - 31 Dec	Air Arabia Abu Dhabi
08 Dec - 15 Dec	IndiGo
15 Dec - 19 Jan	Air Arabia
23 Dec - 07 Jan	Air Arabia
05 Dec - 12 Dec	IndiGo
01 Dec - 08 Jan	Etihad Airways
01 Dec - 07 Jan	Etihad Airways
07 Dec - 14 Dec	IndiGo
17 Dec - 02 Jan	Air Arabia
23 Dec - 30 Dec	IndiGo
29 Dec - 12 Jan	Air Arabia
28 Dec - 04 Jan	Air Arabia
25 Dec - 01 Jan	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.

Book a cheap hotel in London

Cheap car rent in London

Cheapest return flights from Colombo to London in December from $527

Return flights