Flight Hong Kong International Airport departs from Hong Kong Hong Kong International Airport at 00:30 and arrives at Seoul Incheon International Airport at 04:50.
The flighttime is about 3h 20m. The distance travelled ("as the bird flies"): 1621 Km. So the average speed is roughly 486 Km.
There is an 1 hour time difference between Hong Kong and Seoul
The best day to arrive at Hong Kong is Monday and it would be best to avoid Thursday, as prices are on average 239.04% higher than on Monday. (Average prices, based on 30266757 datapoints.)
We have a lot more statistics for flights QF 746 and between Hong Kong and Seoul.