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

Return flights

10 Sep - 08 Oct	Lufthansa
18 Sep - 25 Sep	KLM
05 Sep - 22 Sep	KLM
09 Sep - 24 Sep	KLM
18 Sep - 23 Sep	KLM
04 Sep - 09 Sep	KLM
10 Sep - 21 Sep	KLM
04 Sep - 22 Sep	KLM
01 Sep - 17 Sep	KLM
10 Sep - 25 Sep	KLM
09 Sep - 16 Sep	KLM
10 Sep - 12 Oct	KLM
19 Sep - 10 Oct	KLM
04 Sep - 08 Oct	KLM
05 Sep - 08 Oct	KLM
15 Sep - 07 Oct	KLM
15 Sep - 22 Oct	KLM
15 Sep - 12 Oct	KLM
26 Sep - 12 Oct	KLM
26 Sep - 08 Oct	KLM

Also check the deals for one-way flights from London 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.

Book a cheap hotel in Johannesburg

Cheap car rent in Johannesburg

Cheapest return flights from London to Johannesburg in September from $746

Return flights