Flight Changi Airport departs from Singapore Changi Airport at 06:00 and arrives at Taipei Taoyuan International Airport at 10:40.
The flighttime is about 4h 40m. The distance travelled ("as the bird flies"): 2134 Km. So the average speed is roughly 457 Km.
The best day to arrive at Singapore is Monday and it would be best to avoid Sunday, as prices are on average 236.25% higher than on Monday. (Average prices, based on 665861 datapoints.)
We have a lot more statistics for flights TR 892 and between Singapore and Taipei.