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

Return flights

14 Dec - 21 Dec	Lufthansa	direct
17 Dec - 23 Dec	Lufthansa	direct
30 Dec - 08 Jan	Lufthansa	direct
22 Dec - 29 Dec	Lufthansa	direct
25 Dec - 31 Dec	Lufthansa	direct
30 Dec - 05 Jan	Lufthansa	direct
23 Dec - 29 Dec	Lufthansa	direct
03 Dec - 10 Dec	Lufthansa	direct
13 Dec - 15 Dec	Lufthansa
18 Dec - 21 Dec	Lufthansa
18 Dec - 22 Dec	Lufthansa
21 Dec - 11 Jan	Lufthansa	direct
05 Dec - 07 Dec	Air Serbia
29 Dec - 04 Jan	Lufthansa	direct
26 Dec - 02 Jan	LOT
31 Dec - 04 Jan	Lufthansa
20 Dec - 04 Jan	Lufthansa	direct
28 Dec - 04 Jan	Lufthansa
31 Dec - 04 Jan	Lufthansa	direct
30 Dec - 04 Jan	Lufthansa	direct

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 173€

Return flights