Cheapest return flights from Frankfurt to Ljubljana in September from 183€

Best time to book flights for Frankfurt (FRA) to Ljubljana (LJU) flights at AirHint

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

Return flights

08 Sep - 09 Sep Air Serbia
08 Sep - 08 Sep Air Serbia
15 Sep - 19 Sep Air Serbia
16 Sep - 19 Sep Air Serbia
07 Sep - 14 Sep Lufthansa direct
08 Sep - 10 Sep Air Serbia
20 Sep - 24 Sep Air Serbia
15 Sep - 18 Sep Air Serbia
08 Sep - 15 Sep SWISS
20 Sep - 24 Sep 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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