Flight New Chitose Airport departs from Chitose New Chitose Airport at 21:15 and arrives at Tokyo Narita International Airport at 22:55.
The flighttime is about 1h 40m. The distance travelled ("as the bird flies"): 623 Km. So the average speed is roughly 374 Km.
The best day to arrive at Chitose is Saturday and it would be best to avoid Sunday, as prices are on average 122.85% higher than on Saturday. (Average prices, based on 740942 datapoints.)
We have a lot more statistics for flights JL 528 and between Chitose and Tokyo.