AirHint found the following cheapest return flights from Ljubljana (LJU) to Madrid (MAD) in December 2025 (see full year).

Return flights

11 Dec - 14 Dec	Vueling Airlines
09 Dec - 13 Dec	Vueling Airlines
03 Dec - 07 Dec	easyJet
13 Dec - 15 Dec	KLM
16 Dec - 18 Dec	Vueling Airlines
14 Dec - 18 Dec	Vueling Airlines
16 Dec - 21 Dec	Vueling Airlines
08 Dec - 11 Dec	Air Serbia
05 Dec - 08 Dec	SWISS
04 Dec - 08 Dec	Vueling Airlines
28 Dec - 01 Jan	Air Serbia
26 Dec - 04 Jan	Air Serbia
29 Dec - 02 Jan	Air Serbia
27 Dec - 02 Jan	Air Serbia

Also check the deals for one-way flights from Ljubljana to Madrid 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 Ljubljana to Madrid in December from $165

Return flights