Flight International Airport departs from Abu Dhabi International Airport at 09:35 and arrives at Kathmandu Tribhuvan International Airport at 15:50.
The flighttime is about 4h 15m. The distance travelled ("as the bird flies"): 3416 Km. So the average speed is roughly 804 Km.
There is an 2 hour time difference between Abu Dhabi and Kathmandu