Flight Taoyuan International Airport departs from Taipei Taoyuan International Airport at 11:55 and arrives at Hong Kong Hong Kong International Airport at 13:55.
The flighttime is about 2h 00m. The distance travelled ("as the bird flies"): 826 Km. So the average speed is roughly 413 Km.
The best day to arrive at Taipei is Thursday and it would be best to avoid Saturday, as prices are on average 134.82% higher than on Thursday. (Average prices, based on 4166268 datapoints.)
We have a lot more statistics for flights HX 253 and between Taipei and Hong Kong.