Flight Hong Kong International Airport departs from Hong Kong Hong Kong International Airport at 01:20 and arrives at Seoul Incheon International Airport at 06:00.
The flighttime is about 3h 40m. The distance travelled ("as the bird flies"): 1621 Km. So the average speed is roughly 442 Km.
There is an 1 hour time difference between Hong Kong and Seoul
The best day to arrive at Hong Kong is Tuesday and it would be best to avoid Monday, as prices are on average 347.15% higher than on Tuesday. (Average prices, based on 30577216 datapoints.)
We have a lot more statistics for flights KE 612 and between Hong Kong and Seoul.