Flight Incheon International Airport departs from Seoul Incheon International Airport at 15:10 and arrives at Hong Kong Hong Kong International Airport at 18:00.
The flighttime is about 3h 50m. The distance travelled ("as the bird flies"): 1621 Km. So the average speed is roughly 423 Km.
There is an 1 hour time difference between Seoul and Hong Kong
The best day to arrive at Seoul is Tuesday and it would be best to avoid Thursday, as prices are on average 33.74% higher than on Tuesday. (Average prices, based on 21518358 datapoints.)
We have a lot more statistics for flights CX 411 and between Seoul and Hong Kong.
