Flight Taoyuan International Airport departs from Taipei Taoyuan International Airport at 07:30 and arrives at Singapore Changi Airport at 11:55.
The flighttime is about 4h 25m. The distance travelled ("as the bird flies"): 2134 Km. So the average speed is roughly 483 Km.
The best day to arrive at Taipei is Saturday and it would be best to avoid Thursday, as prices are on average 111.61% higher than on Saturday. (Average prices, based on 1010838 datapoints.)
We have a lot more statistics for flights BR 225 and between Taipei and Singapore.
