Flight King Khaled International Airport departs from Riyadh King Khaled International Airport at 10:50 and arrives at Ad Dammam King Fahd International Airport at 12:00.
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 Wednesday and it would be best to avoid Saturday, as prices are on average 416.91% higher than on Wednesday. (Average prices, based on 125720 datapoints.)
We have a lot more statistics for flights XY 70 and between Riyadh and Ad Dammam.