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

Return flights

31 Dec - 12 Jan	Ryanair
31 Dec - 09 Jan	Ryanair
31 Dec - 07 Jan	Ryanair
31 Dec - 01 Jan	SWISS
31 Dec - 02 Jan	Ryanair
29 Dec - 01 Jan	SWISS
31 Dec - 06 Jan	Ryanair
29 Dec - 31 Dec	SWISS
28 Dec - 31 Dec	SWISS
31 Dec - 05 Jan	Ryanair
30 Dec - 01 Jan	SWISS
30 Dec - 06 Jan	KLM
27 Dec - 31 Dec	Luxair
27 Dec - 30 Dec	Luxair
31 Dec - 31 Dec	KLM
29 Dec - 31 Dec	Ryanair	direct
28 Dec - 30 Dec	SWISS
28 Dec - 31 Dec	Ryanair	direct
28 Dec - 30 Dec	Luxair	direct
27 Dec - 31 Dec	Ryanair	direct

Also check the deals for one-way flights from Luxemburg to Barcelona 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 Luxemburg to Barcelona in December from $129

Return flights