Preferably, It is best to let three-5h of transit time in Johannesburg, so that you have sufficient time to catch your connecting flight. Transiting in Johannesburg is quite simple; basically Stick to the indications for ‘Intercontinental Transit’. The flight from Johannesburg to Harare takes about 1h 30m. Precisely the same https://www.theluxurybooking.co.uk/flights-to-zimbabwe-from-london/