Flight King Khaled International Airport departs from Riyadh King Khaled International Airport at 23:30 and arrives at Jeddah King Abdulaziz International Airport at 01:20.
The flighttime is about 1h 50m. The distance travelled ("as the bird flies"): 880 Km. So the average speed is roughly 480 Km.
The best month to arrive at Riyadh is September and the most expensive month to fly is June. (Average prices, based on 843 datapoints.)
We have a lot more statistics for flights SV 1012 and between Riyadh and Jeddah.