Flight Haneda Airport departs from Tokyo Haneda Airport at 15:20 and arrives at Osaka Kansai International Airport at 16:50.
The flighttime is about 1h 30m. The distance travelled ("as the bird flies"): 511 Km. So the average speed is roughly 341 Km.
The best day to arrive at Tokyo is Thursday and it would be best to avoid Monday, as prices are on average 25.91% higher than on Thursday. (Average prices, based on 7216986 datapoints.)
We have a lot more statistics for flights SF J25 and between Tokyo and Osaka.