Flight Hong Kong International Airport departs from Hong Kong Hong Kong International Airport at 09:05 and arrives at Tokyo Narita International Airport at 14:10.
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 Wednesday and it would be best to avoid Sunday, as prices are on average 111.26% higher than on Wednesday. (Average prices, based on 7930450 datapoints.)
We have a lot more statistics for flights JL 7042 and between Hong Kong and Tokyo.