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

Return flights

18 Aug - 02 Sep	KLM
25 Aug - 08 Sep	KLM
25 Aug - 03 Sep	KLM
24 Aug - 03 Sep	KLM
21 Aug - 03 Sep	KLM
20 Aug - 28 Aug	KLM
06 Aug - 19 Aug	KLM
24 Aug - 01 Sep	KLM
22 Aug - 01 Sep	KLM
16 Aug - 01 Sep	KLM
15 Aug - 22 Aug	Delta
09 Aug - 18 Aug	Delta
16 Aug - 23 Aug	Delta
08 Aug - 22 Aug	Delta
29 Aug - 18 Sep	British Airways
06 Aug - 10 Aug	British Airways
09 Aug - 15 Aug	Qatar Airways
01 Aug - 05 Aug	Qatar Airways
11 Aug - 25 Aug	British Airways

Also check the deals for one-way flights from Washington 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 Washington to Johannesburg in August from 851€

Return flights