Flight Hong Kong International Airport departs from Hong Kong Hong Kong International Airport at 21:00 and arrives at Shanghai Pudong International Airport at 23:50.
The flighttime is about 2h 50m. The distance travelled ("as the bird flies"): 988 Km. So the average speed is roughly 349 Km.
The best day to arrive at Hong Kong is Sunday and it would be best to avoid Thursday, as prices are on average 132.57% higher than on Sunday. (Average prices, based on 11408003 datapoints.)
We have a lot more statistics for flights HX 234 and between Hong Kong and Shanghai.