Ideally, you should make it possible for three-5h of transit time in Johannesburg, so that you've enough time for you to capture your connecting flight. Transiting in Johannesburg is rather effortless; merely Keep to the indicators for ‘Global Transit’. The flight from Johannesburg to Harare requires about 1h 30m. The https://www.theluxurybooking.co.uk/flights-to-zimbabwe-from-london/