Flight Incheon International Airport departs from Seoul Incheon International Airport at 20:05 and arrives at Fuzhou Changle International Airport at 22:00.
The flighttime is about 2h 55m. The distance travelled ("as the bird flies"): 1025 Km. So the average speed is roughly 351 Km.
There is an 1 hour time difference between Seoul and Fuzhou
