Flight Tribhuvan International Airport departs from Kathmandu Tribhuvan International Airport at 07:45 and arrives at Kuwait City Kuwait International Airport at 10:35.
The flighttime is about 5h 50m. The distance travelled ("as the bird flies"): 4158 Km. So the average speed is roughly 713 Km.
There is an 3 hour time difference between Kathmandu and Kuwait City
