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

Return flights

20 Aug - 04 Sep	Turkish Airlines
27 Aug - 10 Sep	Turkish Airlines
23 Aug - 05 Sep	Turkish Airlines
25 Aug - 01 Sep	Turkish Airlines
18 Aug - 02 Sep	Turkish Airlines
23 Aug - 01 Sep	Turkish Airlines
24 Aug - 10 Sep	Turkish Airlines
22 Aug - 01 Sep	Turkish Airlines
24 Aug - 01 Sep	Qatar Airways
21 Aug - 01 Sep	Qatar Airways
12 Aug - 26 Aug	United
11 Aug - 25 Aug	Lufthansa
17 Aug - 31 Aug	Turkish Airlines
15 Aug - 26 Aug	Qatar Airways
03 Aug - 20 Aug	Qatar Airways
04 Aug - 19 Aug	Ethiopian Airlines
03 Aug - 19 Aug	Ethiopian Airlines

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 $833

Return flights