AirHint found the following cheapest return flights from London (LCY) to Charleroi (CRL) in December 2025 (see full year).

Return flights

02 Dec - 04 Dec	ITA Airways
04 Dec - 07 Dec	ITA Airways
05 Dec - 08 Dec	KLM
01 Dec - 08 Dec	KLM
01 Dec - 05 Dec	KLM
04 Dec - 08 Dec	KLM
15 Dec - 18 Dec	ITA Airways
05 Dec - 07 Dec	ITA Airways
09 Dec - 11 Dec	SWISS
01 Dec - 04 Dec	KLM
26 Dec - 09 Jan	ITA Airways
26 Dec - 06 Jan	SWISS
09 Dec - 02 Jan	KLM
29 Dec - 01 Jan	KLM
19 Dec - 09 Jan	Lufthansa
29 Dec - 02 Jan	ITA Airways
31 Dec - 07 Jan	ITA Airways
30 Dec - 06 Jan	KLM
18 Dec - 02 Jan	Aer Lingus
31 Dec - 02 Jan	Aer Lingus

Also check the deals for one-way flights from London to Charleroi 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 Charleroi in December from $366

Return flights