Flight International Airport departs from Osaka International Airport at 12:00 and arrives at Tokyo Haneda Airport at 13:15.
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 Friday and it would be best to avoid Monday, as prices are on average 63.92% higher than on Friday. (Average prices, based on 1910306 datapoints.)
We have a lot more statistics for flights NH 1474 and between Osaka and Tokyo.