Flight Narita International Airport departs from Tokyo Narita International Airport at 14:30 and arrives at Wuhan Wuhan Tianhe International Airport at 17:50.
The flighttime is about 4h 20m. The distance travelled ("as the bird flies"): 2928 Km. So the average speed is roughly 676 Km.
There is an 1 hour time difference between Tokyo and Wuhan
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