Flight Pudong International Airport departs from Shanghai Pudong International Airport at 11:25 and arrives at Hong Kong Hong Kong International Airport at 14:30.
The flighttime is about 3h 05m. The distance travelled ("as the bird flies"): 988 Km. So the average speed is roughly 320 Km.
The best day to arrive at Shanghai is Friday and it would be best to avoid Tuesday, as prices are on average 48.56% higher than on Friday. (Average prices, based on 2784092 datapoints.)
We have a lot more statistics for flights KA 803 and between Shanghai and Hong Kong.