If Possible, you'll want to allow 3-5h of transit time in Johannesburg, so you have sufficient time for you to capture your connecting flight. Transiting in Johannesburg is rather uncomplicated; basically follow the symptoms for ‘Intercontinental Transit’. The flight from Johannesburg to Harare will take about 1h 30m. The exact https://www.theluxurybooking.co.uk/flights-to-zimbabwe-from-london/