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

Return flights

21 Sep - 09 Oct	Etihad Airways
20 Sep - 07 Oct	SWISS
23 Sep - 07 Oct	Lufthansa
23 Sep - 14 Oct	Lufthansa
23 Sep - 09 Oct	Lufthansa
21 Sep - 16 Oct	Etihad Airways
21 Sep - 07 Oct	Etihad Airways
21 Sep - 22 Oct	Etihad Airways
23 Sep - 10 Oct	Etihad Airways
28 Sep - 09 Oct	Etihad Airways
23 Sep - 30 Sep	Etihad Airways
22 Sep - 28 Sep	EgyptAir
23 Sep - 29 Sep	Lufthansa
24 Sep - 30 Sep	Etihad Airways
22 Sep - 25 Sep	Ethiopian Airlines
25 Sep - 29 Sep	Etihad Airways
25 Sep - 30 Sep	Air France
20 Sep - 30 Sep	KLM
24 Sep - 29 Sep	KLM
23 Sep - 28 Sep	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.

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Cheapest return flights from London to Johannesburg in September from $677

Return flights