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

Return flights

30 Dec - 10 Jan	IndiGo
29 Dec - 15 Jan	Etihad Airways
31 Dec - 20 Jan	Gulf Air
30 Dec - 30 Jan	Eurowings
31 Dec - 29 Jan	Gulf Air
31 Dec - 21 Jan	IndiGo
31 Dec - 15 Jan	Gulf Air
31 Dec - 23 Jan	Gulf Air
29 Dec - 12 Jan	Etihad Airways
31 Dec - 19 Jan	Gulf Air
28 Dec - 30 Dec	LOT
27 Dec - 30 Dec	Air France
27 Dec - 31 Dec	Scandinavian Airlines
28 Dec - 31 Dec	IndiGo
28 Dec - 29 Dec	Virgin Atlantic
27 Dec - 28 Dec	Air Canada
28 Dec - 30 Dec	SriLankan Airlines	direct
28 Dec - 29 Dec	SriLankan Airlines	direct
28 Dec - 31 Dec	SriLankan Airlines	direct
27 Dec - 30 Dec	SriLankan Airlines	direct

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 642€

Return flights