Flight Incheon International Airport departs from Seoul Incheon International Airport at 20:40 and arrives at Dubai International Airport at 06:55.The flight has a short stop at Hong Kong.
The flighttime is about 15h 15m. The distance travelled ("as the bird flies"): 7853 Km. So the average speed is roughly 515 Km.
There is an 5 hour time difference between Seoul and Dubai