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

Return flights

06 Dec - 12 Dec	Wizz Air
13 Dec - 11 Jan	Wizz Air
06 Dec - 10 Dec	Wizz Air
13 Dec - 14 Dec	Wizz Air
08 Dec - 12 Dec	Brussels Airlines
04 Dec - 11 Dec	Air Serbia
15 Dec - 18 Dec	Iberia
11 Dec - 18 Dec	Wizz Air
13 Dec - 10 Jan	Wizz Air
06 Dec - 13 Dec	Wizz Air
12 Dec - 14 Dec	Ryanair
13 Dec - 06 Jan	Wizz Air
07 Dec - 10 Dec	Wizz Air Malta
25 Dec - 01 Jan	Air Europa
20 Dec - 06 Jan	Wizz Air
19 Dec - 06 Jan	Ryanair
29 Dec - 03 Jan	Air Serbia
26 Dec - 07 Jan	easyJet
26 Dec - 06 Jan	LOT

Also check the deals for one-way flights from Madrid to Ljubljana 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 Madrid to Ljubljana in December from 150€

Return flights