Preferably, You must allow for 3-5h of transit time in Johannesburg, so that you've got sufficient the perfect time to catch your connecting flight. Transiting in Johannesburg is quite straightforward; basically Adhere to the signs for ‘Worldwide Transit’. The flight from Johannesburg to Harare will take about 1h 30m. *Fares https://www.theluxurybooking.co.uk/flights-to-zimbabwe-from-london/