If Possible, you must permit 3-5h of transit time in Johannesburg, so you have ample the perfect time to catch your connecting flight. Transiting in Johannesburg is quite quick; just Adhere to the indicators for ‘Intercontinental Transit’. The flight from Johannesburg to Harare usually takes about 1h 30m. Flights from https://www.theluxurybooking.co.uk/flights-to-zimbabwe-from-london/