Flight King Fahd International Airport departs from Ad Dammam King Fahd International Airport at 22:45 and arrives at Jeddah King Abdulaziz International Airport at 01:10.
The flighttime is about 2h 25m. The distance travelled ("as the bird flies"): 1242 Km. So the average speed is roughly 514 Km.
The best day to arrive at Ad Dammam is Saturday and it would be best to avoid Thursday, as prices are on average 94.19% higher than on Saturday. (Average prices, based on 384222 datapoints.)
We have a lot more statistics for flights ET 4501 and between Ad Dammam and Jeddah.