Flight International Airport departs from Osaka International Airport at 09:00 and arrives at Tokyo Haneda Airport at 10:10.
The flighttime is about 1h 10m. The distance travelled ("as the bird flies"): 485 Km. So the average speed is roughly 416 Km.
The best day to arrive at Osaka is Tuesday and it would be best to avoid Saturday, as prices are on average 55.16% higher than on Tuesday. (Average prices, based on 1857148 datapoints.)
We have a lot more statistics for flights NH 18 and between Osaka and Tokyo.