Flight Incheon International Airport departs from Seoul Incheon International Airport at 08:15 and arrives at Shenzhen Shenzhen Bao'an International Airport at 11:25.
The flighttime is about 4h 10m. The distance travelled ("as the bird flies"): 1621 Km. So the average speed is roughly 389 Km.
There is an 1 hour time difference between Seoul and Shenzhen
