Flight New Chitose Airport departs from Chitose New Chitose Airport at 13:50 and arrives at Tokyo Haneda Airport at 15:30.
The flighttime is about 1h 40m. The distance travelled ("as the bird flies"): 658 Km. So the average speed is roughly 395 Km.
The best day to arrive at Chitose is Friday and it would be best to avoid Tuesday, as prices are on average 241.4% higher than on Friday. (Average prices, based on 961722 datapoints.)
We have a lot more statistics for flights JL 512 and between Chitose and Tokyo.