Flight Narita International Airport departs from Tokyo Narita International Airport at 14:30 and arrives at Wuhan Wuhan Tianhe International Airport at 18:05.
The flighttime is about 4h 35m. The distance travelled ("as the bird flies"): 2928 Km. So the average speed is roughly 639 Km.
There is an 1 hour time difference between Tokyo and Wuhan