Flight Hong Kong International Airport departs from Hong Kong Hong Kong International Airport at 20:05 and arrives at Shanghai Hongqiao International Airport at 22:45.
The flighttime is about 2h 40m. The distance travelled ("as the bird flies"): 942 Km. So the average speed is roughly 353 Km.
The best day to arrive at Hong Kong is Wednesday and it would be best to avoid Sunday, as prices are on average 63.5% higher than on Wednesday. (Average prices, based on 821484 datapoints.)
We have a lot more statistics for flights MU 506 and between Hong Kong and Shanghai.