Flight Hong Kong International Airport departs from Hong Kong Hong Kong International Airport at 01:25 and arrives at Tokyo Narita International Airport at 06:30.
The flighttime is about 4h 05m. The distance travelled ("as the bird flies"): 3064 Km. So the average speed is roughly 750 Km.
There is an 1 hour time difference between Hong Kong and Tokyo
The best day to arrive at Hong Kong is Friday and it would be best to avoid Monday, as prices are on average 574.72% higher than on Friday. (Average prices, based on 8486907 datapoints.)
We have a lot more statistics for flights JL 7040 and between Hong Kong and Tokyo.