Flight Oita Airport departs from Oita Oita Airport at 10:10 and arrives at Tokyo Haneda Airport at 11:40.
The flighttime is about 1h 30m. The distance travelled ("as the bird flies"): 908 Km. So the average speed is roughly 605 Km.
The best day to arrive at Oita is Thursday and it would be best to avoid Tuesday, as prices are on average 31.56% higher than on Thursday. (Average prices, based on 54998 datapoints.)
We have a lot more statistics for flights NH 794 and between Oita and Tokyo.