Flight International Airport departs from Abu Dhabi International Airport at 14:00 and arrives at Kathmandu Tribhuvan International Airport at 20:05.
The flighttime is about 4h 05m. The distance travelled ("as the bird flies"): 3416 Km. So the average speed is roughly 837 Km.
There is an 2 hour time difference between Abu Dhabi and Kathmandu