Flight Tribhuvan International Airport departs from Kathmandu Tribhuvan International Airport at 16:50 and arrives at Abu Dhabi International Airport at 20:30.
The flighttime is about 5h 40m. The distance travelled ("as the bird flies"): 3416 Km. So the average speed is roughly 603 Km.
There is an 2 hour time difference between Kathmandu and Abu Dhabi