Flight International Airport departs from Dubai International Airport at 18:55 and arrives at Riyadh King Khaled International Airport at 20:15.
The flighttime is about 2h 20m. The distance travelled ("as the bird flies"): 964 Km. So the average speed is roughly 413 Km.
There is an 1 hour time difference between Dubai and Riyadh
The best day to arrive at Dubai is Thursday and it would be best to avoid Friday, as prices are on average 31.29% higher than on Thursday. (Average prices, based on 975203 datapoints.)
We have a lot more statistics for flights FZ 855 and between Dubai and Riyadh.