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

Return flights

24 Dec - 31 Dec	Lufthansa	direct
23 Dec - 31 Dec	Lufthansa	direct
05 Dec - 07 Dec	Lufthansa
11 Dec - 14 Dec	Lufthansa
04 Dec - 07 Dec	Wizz Air
18 Dec - 23 Dec	Lufthansa
05 Dec - 09 Dec	Lufthansa
05 Dec - 08 Dec	Wizz Air Malta
11 Dec - 15 Dec	Lufthansa
18 Dec - 21 Dec	Lufthansa
26 Dec - 04 Jan	Air Serbia
19 Dec - 01 Jan	Lufthansa
23 Dec - 01 Jan	Lufthansa
29 Dec - 02 Jan	Air Serbia
26 Dec - 04 Jan	Lufthansa	direct
28 Dec - 08 Jan	Wizz Air
24 Dec - 02 Jan	Lufthansa
18 Dec - 02 Jan	Lufthansa
30 Dec - 05 Jan	Air Serbia
30 Dec - 04 Jan	LOT

Also check the deals for one-way flights from Frankfurt 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 Frankfurt to Ljubljana in December from 174€

Return flights