Flight Incheon International Airport departs from Seoul Incheon International Airport at 12:45 and arrives at Kathmandu Tribhuvan International Airport at 17:30.
The flighttime is about 7h 45m. The distance travelled ("as the bird flies"): 4562 Km. So the average speed is roughly 589 Km.
There is an 3 hour time difference between Seoul and Kathmandu
