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

Return flights

28 Aug - 02 Sep	Air Serbia
02 Aug - 02 Sep	Air Serbia
08 Aug - 26 Aug	Air Serbia
08 Aug - 25 Aug	Air Serbia
09 Aug - 19 Aug	Air Serbia
21 Aug - 25 Aug	Air Serbia
25 Aug - 29 Aug	Air Serbia
08 Aug - 28 Aug	Air Serbia
15 Aug - 05 Sep	Air Serbia
28 Aug - 01 Sep	Air Serbia
08 Aug - 27 Aug	Air Serbia
29 Aug - 06 Sep	Air Serbia
01 Aug - 04 Aug	Air Serbia
22 Aug - 25 Aug	Air Serbia
06 Aug - 18 Aug	Air Serbia
25 Aug - 04 Sep	Air Serbia
30 Aug - 10 Sep	Air Serbia
30 Aug - 07 Sep	Air Serbia
28 Aug - 04 Sep	Lufthansa	direct
15 Aug - 05 Sep	Lufthansa	direct

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

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 August from 207€

Return flights