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

Return flights

24 Aug - 04 Sep	Etihad Airways
13 Aug - 28 Aug	Cathay Pacific
29 Aug - 06 Sep	Cathay Pacific
25 Aug - 28 Aug	Etihad Airways
24 Aug - 28 Aug	Etihad Airways
12 Aug - 26 Aug	Singapore Airlines
14 Aug - 01 Sep	Ethiopian Airlines
25 Aug - 29 Aug	Etihad Airways
14 Aug - 19 Aug	Cathay Pacific
14 Aug - 29 Aug	Etihad Airways
05 Aug - 12 Aug	Singapore Airlines
05 Aug - 31 Aug	Cathay Pacific
01 Aug - 31 Aug	Emirates

Also check the deals for one-way flights from Seoul 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 Seoul to Johannesburg in August from $774

Return flights