Flight Haneda Airport departs from Tokyo Haneda Airport at 06:35 and arrives at Hong Kong Hong Kong International Airport at 10:55.
The flighttime is about 5h 20m. The distance travelled ("as the bird flies"): 2992 Km. So the average speed is roughly 561 Km.
There is an 1 hour time difference between Tokyo and Hong Kong
The best day to arrive at Tokyo is Sunday and it would be best to avoid Friday, as prices are on average 131.19% higher than on Sunday. (Average prices, based on 1202634 datapoints.)
We have a lot more statistics for flights UO 625 and between Tokyo and Hong Kong.