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

Return flights

23 Sep - 14 Oct	Etihad Airways
23 Sep - 09 Oct	Lufthansa
23 Sep - 07 Oct	Austrian Airlines
22 Sep - 14 Oct	Lufthansa
22 Sep - 07 Oct	Lufthansa
23 Sep - 01 Oct	Etihad Airways
23 Sep - 16 Oct	Lufthansa
22 Sep - 08 Oct	Lufthansa
22 Sep - 10 Oct	Lufthansa
22 Sep - 15 Oct	Etihad Airways
22 Sep - 28 Sep	Ethiopian Airlines
24 Sep - 28 Sep	Ethiopian Airlines
25 Sep - 28 Sep	Ethiopian Airlines
22 Sep - 25 Sep	Ethiopian Airlines
23 Sep - 29 Sep	Austrian Airlines
22 Sep - 29 Sep	Lufthansa
23 Sep - 26 Sep	RwandAir
27 Sep - 30 Sep	RwandAir
26 Sep - 30 Sep	RwandAir
25 Sep - 30 Sep	RwandAir

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 521€

Return flights