Flight Taoyuan International Airport departs from Taipei Taoyuan International Airport at 21:45 and arrives at Singapore Changi Airport at 02:45.
The flighttime is about 5h 00m. The distance travelled ("as the bird flies"): 2134 Km. So the average speed is roughly 427 Km.
The best day to arrive at Taipei is Saturday and it would be best to avoid Sunday, as prices are on average 102.95% higher than on Saturday. (Average prices, based on 509639 datapoints.)
We have a lot more statistics for flights TR 893 and between Taipei and Singapore.