Flight Pudong International Airport departs from Shanghai Pudong International Airport at 19:00 and arrives at Hong Kong Hong Kong International Airport at 22:00.
The flighttime is about 3h 00m. The distance travelled ("as the bird flies"): 988 Km. So the average speed is roughly 329 Km.
The best day to arrive at Shanghai is Sunday and it would be best to avoid Wednesday, as prices are on average 73.46% higher than on Sunday. (Average prices, based on 3331560 datapoints.)
We have a lot more statistics for flights CX 381 and between Shanghai and Hong Kong.