Flight Incheon International Airport departs from Seoul Incheon International Airport at 21:40 and arrives at Shenyang Taoxian Airport at 22:30.
The flighttime is about 1h 50m. The distance travelled ("as the bird flies"): 424 Km. So the average speed is roughly 231 Km.
There is an 1 hour time difference between Seoul and Shenyang