Flight Incheon International Airport departs from Seoul Incheon International Airport at 09:55 and arrives at Shenzhen Shenzhen Bao'an International Airport at 13:00.
The flighttime is about 4h 05m. The distance travelled ("as the bird flies"): 1621 Km. So the average speed is roughly 397 Km.
There is an 1 hour time difference between Seoul and Shenzhen
