Flight International Airport departs from Sharjah International Airport at 07:35 and arrives at Riyadh King Khaled International Airport at 08:20.
The flighttime is about 1h 45m. The distance travelled ("as the bird flies"): 981 Km. So the average speed is roughly 561 Km.
There is an 1 hour time difference between Sharjah and Riyadh