In general, when looking for the cheapest flight to Johannesburg, try to choose a flight departing in February for the best deal.
From most locations, booking your flights to Johannesburg around 55 days prior to your departure date finds the best deals.
Most of our users find that booking their departure to Johannesburg on a Thursday is the cheapest. Conversely, departing on a Friday seems to be the most expensive.
Typically, cheap prices to Johannesburg are most often found for afternoon flights. Cheap prices are less likely for morning flights.