Flight Taoyuan International Airport departs from Taipei Taoyuan International Airport at 09:55 and arrives at Hong Kong Hong Kong International Airport at 11:50.
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 Thursday and it would be best to avoid Saturday, as prices are on average 81.8% higher than on Thursday. (Average prices, based on 3440590 datapoints.)
We have a lot more statistics for flights CX 499 and between Taipei and Hong Kong.