Flight Boryspil International Airport departs from Kiev Boryspil International Airport at 09:50 and arrives at Prague Václav Havel Airport Prague at 11:00.
The flighttime is about 2h 10m. The distance travelled ("as the bird flies"): 1850 Km. So the average speed is roughly 854 Km.
There is an 1 hour time difference between Kiev and Prague