AirHint found the following cheapest return flights from London (LGW) to Luxemburg (LUX) in December 2025 (see full year).

Return flights

13 Dec - 14 Dec	Vueling Airlines
13 Dec - 15 Dec	Vueling Airlines
06 Dec - 08 Dec	easyJet
05 Dec - 08 Dec	SWISS
06 Dec - 07 Dec	Wizz Air Malta
22 Dec - 08 Jan	SWISS
29 Dec - 04 Jan	Wizz Air Malta
11 Dec - 14 Dec	Vueling Airlines
19 Dec - 22 Dec	easyJet
28 Dec - 03 Jan	Wizz Air Malta
30 Dec - 02 Jan	Vueling Airlines
28 Dec - 31 Dec	easyJet
24 Dec - 28 Dec	SWISS
21 Dec - 29 Dec	easyJet
31 Dec - 02 Jan	easyJet
31 Dec - 01 Jan	SWISS
20 Dec - 02 Jan	easyJet

Also check the deals for one-way flights from London to Luxemburg 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 Luxemburg in December from 158€

Return flights