Flight Hong Kong International Airport departs from Hong Kong Hong Kong International Airport at 21:10 and arrives at Hangzhou Hangzhou Xiaoshan International Airport at 23:35.
The flighttime is about 2h 25m. The distance travelled ("as the bird flies"): 828 Km. So the average speed is roughly 343 Km.
The best day to arrive at Hong Kong is Tuesday and it would be best to avoid Sunday, as prices are on average 412.48% higher than on Tuesday. (Average prices, based on 350000 datapoints.)
We have a lot more statistics for flights HX 128 and between Hong Kong and Hangzhou.