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

Return flights

11 Sep - 21 Sep	KLM
07 Sep - 15 Sep	KLM
09 Sep - 25 Sep	KLM
06 Sep - 23 Sep	KLM
10 Sep - 25 Sep	KLM
16 Sep - 29 Sep	KLM
07 Sep - 22 Sep	KLM
10 Sep - 24 Sep	KLM
18 Sep - 25 Sep	KLM
05 Sep - 26 Sep	KLM
16 Sep - 09 Oct	KLM
22 Sep - 16 Oct	KLM
20 Sep - 08 Oct	KLM
24 Sep - 08 Oct	KLM
22 Sep - 07 Oct	KLM
17 Sep - 09 Oct	KLM
16 Sep - 29 Oct	KLM
15 Sep - 05 Oct	KLM
22 Sep - 05 Oct	KLM
05 Sep - 06 Oct	KLM

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

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 Johannesburg in September from 427€

Return flights