There are 2 flights from all Brussels airports, Belgium to South Africa, operated by 1 airlines. You can fly low cost from Brussels to 2 cities in South Africa.
Cape Town
Johannesburg
Fly on workdays: As many passengers prefer to fly on week-ends, week-end tickets sell first. If you don't book your trip well in advance (2-3 months beforehand) you may notice, for example, that Thursday flights are cheaper than Sunday flights. Some low cost carriers have special promotions on the flights during the week.