Flight Hong Kong International Airport departs from Hong Kong Hong Kong International Airport at 09:05 and arrives at Seoul Incheon International Airport at 13:35.
The flighttime is about 3h 30m. The distance travelled ("as the bird flies"): 1621 Km. So the average speed is roughly 463 Km.
There is an 1 hour time difference between Hong Kong and Seoul
The best day to arrive at Hong Kong is Thursday and it would be best to avoid Saturday, as prices are on average 166.08% higher than on Thursday. (Average prices, based on 33275086 datapoints.)
We have a lot more statistics for flights HX 628 and between Hong Kong and Seoul.