AirHint found the following cheapest return flights from London (LCY) to Cluj-napoca (CLJ) in December 2025 (see full year).

Return flights

10 Dec - 14 Dec	SWISS
03 Dec - 07 Dec	SWISS
06 Dec - 11 Dec	SWISS
15 Dec - 18 Dec	ITA Airways
24 Dec - 05 Jan	SWISS
15 Dec - 17 Dec	ITA Airways
12 Dec - 15 Dec	ITA Airways
05 Dec - 14 Dec	ITA Airways
30 Dec - 06 Jan	SWISS
18 Dec - 21 Dec	ITA Airways
05 Dec - 07 Dec	ITA Airways
12 Dec - 14 Dec	SWISS
31 Dec - 07 Jan	KLM
18 Dec - 11 Jan	SWISS
12 Dec - 04 Jan	SWISS
31 Dec - 01 Jan	ITA Airways
16 Dec - 07 Jan	SWISS
15 Dec - 01 Jan	ITA Airways
29 Dec - 02 Jan	Luxair
23 Dec - 04 Jan	SWISS

Also check the deals for one-way flights from London to Cluj-napoca 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 Cluj-napoca in December from $225

Return flights