Flight Pudong International Airport departs from Shanghai Pudong International Airport at 19:05 and arrives at Hong Kong Hong Kong International Airport at 22:00.
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 Wednesday and it would be best to avoid Saturday, as prices are on average 161.99% higher than on Wednesday. (Average prices, based on 2795118 datapoints.)
We have a lot more statistics for flights CX 381 and between Shanghai and Hong Kong.