Flight Incheon International Airport departs from Seoul Incheon International Airport at 20:05 and arrives at Hong Kong Hong Kong International Airport at 23:00.
The flighttime is about 3h 55m. The distance travelled ("as the bird flies"): 1621 Km. So the average speed is roughly 414 Km.
There is an 1 hour time difference between Seoul and Hong Kong
The best day to arrive at Seoul is Friday and it would be best to avoid Wednesday, as prices are on average 813.87% higher than on Friday. (Average prices, based on 21521405 datapoints.)
We have a lot more statistics for flights QR 5845 and between Seoul and Hong Kong.