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

Return flights

28 Aug - 11 Sep	Ryanair
25 Aug - 10 Sep	Ryanair
25 Aug - 02 Sep	Ryanair
28 Aug - 09 Sep	Ryanair
27 Aug - 10 Sep	Ryanair
23 Aug - 09 Sep	Ryanair
25 Aug - 07 Sep	Ryanair
25 Aug - 29 Aug	Ryanair
27 Aug - 19 Sep	Ryanair
25 Aug - 01 Sep	Ryanair
26 Aug - 13 Sep	Ryanair
28 Aug - 31 Aug	Ryanair
27 Aug - 31 Aug	Ryanair
15 Aug - 29 Aug	Ryanair
25 Aug - 30 Aug	Ryanair
26 Aug - 31 Aug	Ryanair
20 Aug - 27 Aug	SunExpress
29 Aug - 31 Aug	Ryanair
25 Aug - 31 Aug	Pegasus Airlines
22 Aug - 31 Aug	Pegasus Airlines

Also check the deals for one-way flights from London to Johannesburg 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 London to Johannesburg in August from 581€

Return flights