Flight Narita International Airport departs from Tokyo Narita International Airport at 10:35 and arrives at Hong Kong Hong Kong International Airport at 15:00.
The flighttime is about 5h 25m. The distance travelled ("as the bird flies"): 3064 Km. So the average speed is roughly 566 Km.
There is an 1 hour time difference between Tokyo and Hong Kong
The best month to arrive at Tokyo is April and the most expensive month to fly is January. (Average prices, based on 5675 datapoints.)
The best day to arrive at Tokyo is Tuesday and it would be best to avoid Thursday, as prices are on average 5.89% higher than on Tuesday. (Average prices, based on 12969629 datapoints.)
We have a lot more statistics for flights GA 501 and between Tokyo and Hong Kong.