Cheapest return flights from Frankfurt to Ljubljana in September from 177€

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

Return flights

05 Sep - 08 Sep Air Serbia
11 Sep - 15 Sep Air Serbia
25 Sep - 29 Sep Air Serbia
27 Sep - 14 Oct Air Serbia
22 Sep - 29 Sep Ryanair
02 Sep - 05 Sep Air Serbia
02 Sep - 09 Sep Air Serbia
02 Sep - 07 Sep Air Serbia
27 Sep - 04 Oct Air Serbia
18 Sep - 22 Sep Air Serbia
03 Sep - 05 Sep Wizz Air Malta
20 Sep - 27 Sep Air Serbia
26 Sep - 03 Oct Air Serbia
27 Sep - 04 Oct Lufthansa direct
26 Sep - 03 Oct Lufthansa direct

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

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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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