Flight Incheon International Airport departs from Seoul Incheon International Airport at 22:40 and arrives at Da Nang Da Nang International Airport at 01:45.
The flighttime is about 5h 05m. The distance travelled ("as the bird flies"): 2275 Km. So the average speed is roughly 448 Km.
There is an 2 hour time difference between Seoul and Da Nang
