Flight Kansai International Airport departs from Osaka Kansai International Airport at 06:30 and arrives at Tokyo Haneda Airport at 07:40.
The flighttime is about 1h 10m. The distance travelled ("as the bird flies"): 511 Km. So the average speed is roughly 438 Km.
The best day to arrive at Osaka is Sunday and it would be best to avoid Friday, as prices are on average 132.14% higher than on Sunday. (Average prices, based on 5974726 datapoints.)
We have a lot more statistics for flights 7G 3820 and between Osaka and Tokyo.