AirHint found the following cheapest return flights from London (LHR) to Luxemburg (LUX) in December 2026 (see full year).

Return flights

11 Dec - 14 Dec	British Airways	direct
05 Dec - 06 Dec	British Airways	direct
24 Dec - 02 Jan	KLM
28 Dec - 01 Jan	KLM
13 Dec - 20 Dec	British Airways
19 Dec - 24 Dec	KLM
13 Dec - 20 Dec	British Airways	direct
19 Dec - 24 Dec	British Airways	direct
28 Dec - 01 Jan	British Airways	direct
24 Dec - 02 Jan	British Airways	direct

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 92€

Return flights