Flight International Airport departs from Osaka International Airport at 07:05 and arrives at Tokyo Narita International Airport at 08:15.
The flighttime is about 1h 10m. The distance travelled ("as the bird flies"): 556 Km. So the average speed is roughly 477 Km.
The best day to arrive at Osaka is Monday and it would be best to avoid Thursday, as prices are on average 69.34% higher than on Monday. (Average prices, based on 413061 datapoints.)
We have a lot more statistics for flights JL 102 and between Osaka and Tokyo.