Flight International Airport departs from Muscat International Airport at 00:15 and arrives at Trivandrum Trivandrum International Airport at 05:35.
The flighttime is about 3h 50m. The distance travelled ("as the bird flies"): 2156 Km. So the average speed is roughly 562 Km.
There is an 1.5 hour time difference between Muscat and Trivandrum