Flight King Khaled International Airport departs from Riyadh King Khaled International Airport at 22:25 and arrives at Jeddah King Abdulaziz International Airport at 00:10.
The flighttime is about 1h 45m. The distance travelled ("as the bird flies"): 880 Km. So the average speed is roughly 503 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 1091 and between Riyadh and Jeddah.