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

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

26 Sep - 28 Sep Air Serbia
22 Sep - 25 Sep Air Serbia
01 Sep - 07 Sep Air Serbia
01 Sep - 08 Sep Air Serbia
15 Sep - 21 Sep Air Serbia
04 Sep - 07 Sep Air Serbia
01 Sep - 08 Sep Lufthansa direct
01 Sep - 07 Sep Lufthansa direct
15 Sep - 21 Sep Lufthansa direct
26 Sep - 28 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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