Flight International Airport departs from Osaka International Airport at 18:00 and arrives at Tokyo Haneda Airport at 19:15.
The flighttime is about 1h 15m. The distance travelled ("as the bird flies"): 485 Km. So the average speed is roughly 388 Km.
The best day to arrive at Osaka is Wednesday and it would be best to avoid Sunday, as prices are on average 104.95% higher than on Wednesday. (Average prices, based on 1909846 datapoints.)
We have a lot more statistics for flights NH 36 and between Osaka and Tokyo.
MYR