Flying time from Australia to South Africa. The total flight duration from Australia to South Africa is 13 hours, 14 minutes. This assumes an average flight speed for a commercial airliner of 500 mph, which is equivalent to 805 km/h or 434 knots. It also adds an extra 30 minutes for take-off and landing.he calculation of flight time is based on the straight line flight distance from Australia to South Africa (as the crow flies), which is about 6,363 miles or 10 240 kilometers. Your trip begins in Australia.