Flight International Airport departs from Tashkent International Airport at 17:15 and arrives at Urumqi Diwopu International Airport at 22:40.
The flighttime is about 2h 25m. The distance travelled ("as the bird flies"): 2023 Km. So the average speed is roughly 837 Km.
There is an 3 hour time difference between Tashkent and Urumqi