AirHint found the following cheapest return flights from Frankfurt (FRA) to Ljubljana (LJU) in January 2026 (see full year).

Return flights

26 Jan - 28 Jan	Air Serbia
20 Jan - 22 Jan	Air Serbia
12 Jan - 15 Jan	Air Serbia
23 Jan - 25 Jan	Air Serbia
23 Jan - 26 Jan	Air Serbia
20 Jan - 21 Jan	Air Serbia
30 Jan - 02 Feb	Air Serbia
26 Jan - 01 Feb	Lufthansa	direct
29 Jan - 01 Feb	Lufthansa
16 Jan - 18 Jan	Air Serbia
16 Jan - 19 Jan	Air Serbia
22 Jan - 25 Jan	Lufthansa
24 Jan - 07 Feb	Air Serbia
13 Jan - 20 Jan	Lufthansa
29 Jan - 01 Feb	Lufthansa	direct
29 Jan - 02 Feb	Lufthansa	direct
30 Jan - 01 Feb	Lufthansa	direct
30 Jan - 02 Feb	Lufthansa	direct

Also check the deals for one-way flights from Frankfurt to Ljubljana in January.

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 January from 163€

Return flights