Flight Changi Airport departs from Singapore Changi Airport at 15:45 and arrives at Taipei Taoyuan International Airport at 20:15.
The flighttime is about 4h 30m. The distance travelled ("as the bird flies"): 2134 Km. So the average speed is roughly 474 Km.
The best day to arrive at Singapore is Sunday and it would be best to avoid Thursday, as prices are on average 209.02% higher than on Sunday. (Average prices, based on 789116 datapoints.)
We have a lot more statistics for flights BR 216 and between Singapore and Taipei.