Flight Taoyuan International Airport departs from Taipei Taoyuan International Airport at 19:00 and arrives at Hong Kong Hong Kong International Airport at 20:45.
The flighttime is about 1h 45m. The distance travelled ("as the bird flies"): 826 Km. So the average speed is roughly 472 Km.
The best day to arrive at Taipei is Monday and it would be best to avoid Thursday, as prices are on average 79.31% higher than on Monday. (Average prices, based on 3427217 datapoints.)
We have a lot more statistics for flights BR 809 and between Taipei and Hong Kong.