Flight Kuwait International Airport departs from Kuwait City Kuwait International Airport at 19:45 and arrives at Colombo Bandaranaike International Airport at 04:00.
The flighttime is about 5h 45m. The distance travelled ("as the bird flies"): 3651 Km. So the average speed is roughly 635 Km.
There is an 2.5 hour time difference between Kuwait City and Colombo