Flight Incheon International Airport departs from Seoul Incheon International Airport at 22:45 and arrives at Zhengzhou Xinzheng Airport at 00:30.
The flighttime is about 2h 45m. The distance travelled ("as the bird flies"): 1411 Km. So the average speed is roughly 513 Km.
There is an 1 hour time difference between Seoul and Zhengzhou
