Flight Narita International Airport departs from Tokyo Narita International Airport at 15:25 and arrives at Hong Kong Hong Kong International Airport at 20:00.
The flighttime is about 5h 35m. The distance travelled ("as the bird flies"): 3064 Km. So the average speed is roughly 549 Km.
There is an 1 hour time difference between Tokyo and Hong Kong
The best day to arrive at Tokyo is Friday and it would be best to avoid Saturday, as prices are on average 98.62% higher than on Friday. (Average prices, based on 15819357 datapoints.)
We have a lot more statistics for flights UO 849 and between Tokyo and Hong Kong.