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

Return flights

04 Dec - 09 Dec	SWISS
03 Dec - 06 Dec	SWISS
07 Dec - 14 Dec	SWISS
17 Dec - 11 Jan	Lufthansa
03 Dec - 04 Dec	Lufthansa
04 Dec - 04 Dec	Lufthansa
09 Dec - 10 Dec	Lufthansa
11 Dec - 12 Dec	Lufthansa
02 Dec - 05 Dec	Lufthansa
03 Dec - 05 Dec	Lufthansa
03 Dec - 03 Dec	Lufthansa
28 Dec - 01 Jan	Luxair	direct
11 Dec - 04 Jan	SWISS
17 Dec - 05 Jan	Lufthansa
17 Dec - 04 Jan	Lufthansa
18 Dec - 05 Jan	Ryanair
21 Dec - 04 Jan	Luxair
19 Dec - 05 Jan	Lufthansa
18 Dec - 04 Jan	SWISS
18 Dec - 02 Jan	SWISS

Also check the deals for one-way flights from Luxemburg 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.

Book a cheap hotel in Ljubljana

Cheap car rent in Ljubljana

Cheapest return flights from Luxemburg to Ljubljana in December from $184

Return flights