Flight Haneda Airport departs from Tokyo Haneda Airport at 16:00 and arrives at Hong Kong Hong Kong International Airport at 20:15.
The flighttime is about 5h 15m. The distance travelled ("as the bird flies"): 2992 Km. So the average speed is roughly 570 Km.
There is an 1 hour time difference between Tokyo and Hong Kong
The best day to arrive at Tokyo is Monday and it would be best to avoid Friday, as prices are on average 57.61% higher than on Monday. (Average prices, based on 1229990 datapoints.)
We have a lot more statistics for flights CX 549 and between Tokyo and Hong Kong.