Flight King Fahd International Airport departs from Ad Dammam King Fahd International Airport at 19:35 and arrives at Dubai International Airport at 21:55.
The flighttime is about 1h 20m. The distance travelled ("as the bird flies"): 624 Km. So the average speed is roughly 468 Km.
There is an 1 hour time difference between Ad Dammam and Dubai