Flight Taoyuan International Airport departs from Taipei Taoyuan International Airport at 11:00 and arrives at Hong Kong Hong Kong International Airport at 12:55.
The flighttime is about 1h 55m. The distance travelled ("as the bird flies"): 826 Km. So the average speed is roughly 431 Km.
The best day to arrive at Taipei is Saturday and it would be best to avoid Sunday, as prices are on average 51.55% higher than on Saturday. (Average prices, based on 3428946 datapoints.)
This graph shows the distribution of prices found in the past years for this flight. (Average prices, based on 112 datapoints.)
We have a lot more statistics for flights CI 909 and between Taipei and Hong Kong.