Flight Pudong International Airport departs from Shanghai Pudong International Airport at 08:40 and arrives at Hong Kong Hong Kong International Airport at 11:35.
The flighttime is about 2h 55m. The distance travelled ("as the bird flies"): 988 Km. So the average speed is roughly 339 Km.
The best day to arrive at Shanghai is Tuesday and it would be best to avoid Monday, as prices are on average 86.84% higher than on Tuesday. (Average prices, based on 2790188 datapoints.)
We have a lot more statistics for flights CX 5831 and between Shanghai and Hong Kong.