Cheapest return flights from Frankfurt to Ljubljana in September from $171

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

Return flights

05 Sep - 12 Sep Lufthansa direct
09 Sep - 26 Sep Lufthansa direct
09 Sep - 15 Sep Lufthansa direct
14 Sep - 26 Sep Lufthansa direct
15 Sep - 29 Sep Lufthansa direct
08 Sep - 15 Sep Air Serbia
05 Sep - 09 Sep Air Serbia
04 Sep - 09 Sep Air Serbia
15 Sep - 28 Sep Air Serbia
25 Sep - 28 Sep Air Serbia
26 Sep - 01 Oct Air Serbia
26 Sep - 01 Oct Lufthansa direct

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

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