Flight Kansai International Airport departs from Osaka Kansai International Airport at 07:15 and arrives at Tokyo Narita International Airport at 08:40.
The flighttime is about 1h 25m. The distance travelled ("as the bird flies"): 582 Km. So the average speed is roughly 411 Km.
The best day to arrive at Osaka is Wednesday and it would be best to avoid Saturday, as prices are on average 81.73% higher than on Wednesday. (Average prices, based on 8311383 datapoints.)
We have a lot more statistics for flights JQ 230 and between Osaka and Tokyo.