Flight Taoyuan International Airport departs from Taipei Taoyuan International Airport at 07:40 and arrives at Singapore Changi Airport at 12:00.
The flighttime is about 4h 20m. The distance travelled ("as the bird flies"): 2134 Km. So the average speed is roughly 492 Km.
The best day to arrive at Taipei is Sunday and it would be best to avoid Thursday, as prices are on average 140.34% higher than on Sunday. (Average prices, based on 496589 datapoints.)
We have a lot more statistics for flights BR 225 and between Taipei and Singapore.