Flight International Airport departs from Sharjah International Airport at 22:25 and arrives at Colombo Bandaranaike International Airport at 04:25.
The flighttime is about 4h 30m. The distance travelled ("as the bird flies"): 2785 Km. So the average speed is roughly 619 Km.
There is an 1.5 hour time difference between Sharjah and Colombo