Flight Narita International Airport departs from Tokyo Narita International Airport at 18:25 and arrives at Osaka International Airport at 19:50.
The flighttime is about 1h 25m. The distance travelled ("as the bird flies"): 556 Km. So the average speed is roughly 392 Km.
The best day to arrive at Tokyo is Friday and it would be best to avoid Tuesday, as prices are on average 155.96% higher than on Friday. (Average prices, based on 597302 datapoints.)
We have a lot more statistics for flights JL 3009 and between Tokyo and Osaka.