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

Return flights

25 Dec - 01 Jan	Luxair	direct
31 Dec - 05 Jan	SWISS
26 Dec - 29 Dec	KLM
26 Dec - 02 Jan	KLM
23 Dec - 25 Dec	Luxair	direct
24 Dec - 03 Jan	KLM
26 Dec - 02 Jan	Luxair	direct
25 Dec - 04 Jan	KLM
29 Dec - 01 Jan	KLM
31 Dec - 05 Jan	Luxair	direct
27 Dec - 05 Jan	KLM
26 Dec - 28 Dec	Turkish Airlines
28 Dec - 29 Dec	Lufthansa
29 Dec - 01 Jan	Luxair	direct
22 Dec - 22 Dec	Lufthansa
22 Dec - 22 Dec	Luxair	direct
26 Dec - 29 Dec	Luxair	direct
26 Dec - 28 Dec	Luxair	direct
28 Dec - 29 Dec	Luxair	direct

Also check the deals for one-way flights from Copenhagen 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 Copenhagen to Luxemburg in December from $212

Return flights