Flight OR Tambo International Airport departs from Johannesburg OR Tambo International Airport at 13:40 and arrives at Doha International Airport at 23:10.
The flighttime is about 8h 30m. The distance travelled ("as the bird flies"): 4956 Km. So the average speed is roughly 583 Km.
There is an 1 hour time difference between Johannesburg and Doha