Flight King Abdulaziz International Airport departs from Jeddah King Abdulaziz International Airport at 10:45 and arrives at Riyadh King Khaled International Airport at 12:20.
The flighttime is about 1h 35m. The distance travelled ("as the bird flies"): 880 Km. So the average speed is roughly 556 Km.
The best day to arrive at Jeddah is Thursday and it would be best to avoid Monday, as prices are on average 232.91% higher than on Thursday. (Average prices, based on 1999483 datapoints.)
We have a lot more statistics for flights XY 20 and between Jeddah and Riyadh.