Flight Hong Kong International Airport departs from Hong Kong Hong Kong International Airport at 18:15 and arrives at Taipei Taoyuan International Airport at 20:05.
The flighttime is about 1h 50m. The distance travelled ("as the bird flies"): 826 Km. So the average speed is roughly 451 Km.
The best day to arrive at Hong Kong is Saturday and it would be best to avoid Thursday, as prices are on average 60.83% higher than on Saturday. (Average prices, based on 4009457 datapoints.)
We have a lot more statistics for flights CX 402 and between Hong Kong and Taipei.