Flight Pudong International Airport departs from Shanghai Pudong International Airport at 11:55 and arrives at Hong Kong Hong Kong International Airport at 14:45.
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 Shanghai is Thursday and it would be best to avoid Saturday, as prices are on average 151.07% higher than on Thursday. (Average prices, based on 2791817 datapoints.)
We have a lot more statistics for flights HX 237 and between Shanghai and Hong Kong.