Flight International Airport departs from Osaka International Airport at 10:30 and arrives at Tokyo Narita International Airport at 11:40.
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 Sunday and it would be best to avoid Saturday, as prices are on average 70.09% higher than on Sunday. (Average prices, based on 409451 datapoints.)
We have a lot more statistics for flights JL 112 and between Osaka and Tokyo.