Flight Kansai International Airport departs from Osaka Kansai International Airport at 18:30 and arrives at Tokyo Narita International Airport at 20:05.
The flighttime is about 1h 35m. The distance travelled ("as the bird flies"): 582 Km. So the average speed is roughly 368 Km.
The best day to arrive at Osaka is Friday and it would be best to avoid Monday, as prices are on average 153.13% higher than on Friday. (Average prices, based on 8295808 datapoints.)
We have a lot more statistics for flights JQ 224 and between Osaka and Tokyo.