Flight Kansai International Airport departs from Osaka Kansai International Airport at 07:30 and arrives at Tokyo Narita International Airport at 09:00.
The flighttime is about 1h 30m. The distance travelled ("as the bird flies"): 582 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 Saturday, as prices are on average 94.39% higher than on Friday. (Average prices, based on 8331425 datapoints.)
We have a lot more statistics for flights MM 311 and between Osaka and Tokyo.