Flight Oita Airport departs from Oita Oita Airport at 18:05 and arrives at Tokyo Haneda Airport at 19:40.
The flighttime is about 1h 35m. The distance travelled ("as the bird flies"): 908 Km. So the average speed is roughly 573 Km.
The best day to arrive at Oita is Friday and it would be best to avoid Wednesday, as prices are on average 21.94% higher than on Friday. (Average prices, based on 54544 datapoints.)
We have a lot more statistics for flights NH 800 and between Oita and Tokyo.