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

Return flights

11 Sep - 24 Sep	Turkish Airlines
18 Sep - 01 Oct	Turkish Airlines
15 Sep - 01 Oct	Turkish Airlines
23 Sep - 02 Oct	Turkish Airlines
18 Sep - 02 Oct	Turkish Airlines
20 Sep - 30 Sep	Turkish Airlines
03 Sep - 12 Sep	Turkish Airlines
15 Sep - 29 Sep	Turkish Airlines
09 Sep - 15 Sep	Turkish Airlines
22 Sep - 06 Oct	Turkish Airlines
05 Sep - 15 Sep	Turkish Airlines
01 Sep - 06 Sep	Turkish Airlines
04 Sep - 21 Sep	Turkish Airlines
18 Sep - 04 Oct	Turkish Airlines
29 Sep - 13 Oct	Turkish Airlines
29 Sep - 05 Oct	Turkish Airlines
20 Sep - 28 Sep	Turkish Airlines

Also check the deals for one-way flights from Washington 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 Washington to Johannesburg in September from 765€

Return flights