Flight Haneda Airport departs from Tokyo Haneda Airport at 18:40 and arrives at Miyazaki Miyazaki Bougainvillea Airport at 20:30.
The flighttime is about 10h 50m. The distance travelled ("as the bird flies"): 969 Km. So the average speed is roughly 89 Km.
There is an 9 hour time difference between Tokyo and Miyazaki