Flight Haneda Airport departs from Tokyo Haneda Airport at 08:45 and arrives at Osaka Kansai International Airport at 10:05.
The flighttime is about 1h 20m. The distance travelled ("as the bird flies"): 511 Km. So the average speed is roughly 383 Km.
The best day to arrive at Tokyo is Wednesday and it would be best to avoid Monday, as prices are on average 60.29% higher than on Wednesday. (Average prices, based on 5332761 datapoints.)
We have a lot more statistics for flights 7G 3821 and between Tokyo and Osaka.