Flight Taoyuan International Airport departs from Taipei Taoyuan International Airport at 09:25 and arrives at Singapore Changi Airport at 13:50.
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 Sunday and it would be best to avoid Thursday, as prices are on average 118.62% higher than on Sunday. (Average prices, based on 495627 datapoints.)
We have a lot more statistics for flights BR 215 and between Taipei and Singapore.