Flight International Airport departs from Osaka International Airport at 13:00 and arrives at Tokyo Haneda Airport at 14:10.
The flighttime is about 1h 10m. The distance travelled ("as the bird flies"): 485 Km. So the average speed is roughly 416 Km.
The best day to arrive at Osaka is Wednesday and it would be best to avoid Tuesday, as prices are on average 116.19% higher than on Wednesday. (Average prices, based on 2207259 datapoints.)
We have a lot more statistics for flights SQ 26 and between Osaka and Tokyo.