Flight King Khaled International Airport departs from Riyadh King Khaled International Airport at 11:00 and arrives at Ad Dammam King Fahd International Airport at 12:10.
The flighttime is about 1h 10m. The distance travelled ("as the bird flies"): 362 Km. So the average speed is roughly 310 Km.
The best day to arrive at Riyadh is Friday and it would be best to avoid Monday, as prices are on average 403.47% higher than on Friday. (Average prices, based on 73628 datapoints.)
We have a lot more statistics for flights SV 1140 and between Riyadh and Ad Dammam.