Flight Incheon International Airport departs from Seoul Incheon International Airport at 09:10 and arrives at Hong Kong Hong Kong International Airport at 18:30.The flight has a short stop at Taipei.
The flighttime is about 10h 20m. The distance travelled ("as the bird flies"): 1621 Km. So the average speed is roughly 157 Km.
There is an 1 hour time difference between Seoul and Hong Kong
The best day to arrive at Seoul is Sunday and it would be best to avoid Thursday, as prices are on average 88.06% higher than on Sunday. (Average prices, based on 18344904 datapoints.)
We have a lot more statistics for flights CX 421 and between Seoul and Hong Kong.
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