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

Return flights

07 Dec - 16 Dec	Vueling Airlines
03 Dec - 17 Dec	Lufthansa
12 Dec - 14 Dec	Lufthansa
04 Dec - 09 Dec	Lufthansa
03 Dec - 10 Dec	Lufthansa
07 Dec - 11 Dec	Lufthansa
04 Dec - 08 Dec	Lufthansa
05 Dec - 07 Dec	SWISS
07 Dec - 23 Dec	Vueling Airlines
04 Dec - 16 Dec	Vueling Airlines
25 Dec - 04 Jan	Lufthansa
22 Dec - 06 Jan	Lufthansa
19 Dec - 04 Jan	Lufthansa
29 Dec - 02 Jan	Lufthansa
22 Dec - 05 Jan	Lufthansa
30 Dec - 02 Jan	LOT
20 Dec - 04 Jan	Lufthansa
29 Dec - 03 Jan	Lufthansa
27 Dec - 03 Jan	SWISS
23 Dec - 06 Jan	Vueling Airlines

Also check the deals for one-way flights from Duesseldorf 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 Duesseldorf to Ljubljana in December from 167€

Return flights