Flight Soekarno–Hatta International Airport departs from Jakarta Soekarno–Hatta International Airport at 12:00 and arrives at Tashkent International Airport at 18:40.
The flighttime is about 8h 40m. The distance travelled ("as the bird flies"): 3799 Km. So the average speed is roughly 438 Km.
There is an 2 hour time difference between Jakarta and Tashkent