Flight King Khaled International Airport departs from Riyadh King Khaled International Airport at 18:45 and arrives at Amman Queen Alia International Airport at 21:00.
The flighttime is about 3h 15m. The distance travelled ("as the bird flies"): 1316 Km. So the average speed is roughly 405 Km.
There is an 1 hour time difference between Riyadh and Amman