Flight Haneda Airport departs from Tokyo Haneda Airport at 20:00 and arrives at Shanghai Pudong International Airport at 21:55.
The flighttime is about 2h 55m. The distance travelled ("as the bird flies"): 2021 Km. So the average speed is roughly 693 Km.
There is an 1 hour time difference between Tokyo and Shanghai
The best day to arrive at Tokyo is Sunday and it would be best to avoid Monday, as prices are on average 1528.02% higher than on Sunday. (Average prices, based on 690885 datapoints.)
We have a lot more statistics for flights JL 5604 and between Tokyo and Shanghai.