There are only three airlines that fly non-stop to South Africa from London, so it's easy to see who has the hottest fares when they all launch sales. With return flights for £699 -- a saving of up to £240 on fares outside of this sale period -- South African Airways takes the crown.
Depart from London Heathrow from 14 August-27 March, 2014.
Flight time is around 11.5 hours; pretty snappy when you consider some 1-stop services take up to 29 hours to get you to Jo'burg from London.
Book by 16 July.
South African Airways -- recently named Best Airline in Africa at the World Airline Awards -- also has flights to Cape Town (via Johannesburg) for £719 per person, and flights to Durban or Port Elizabeth for £725 per person.