Flight Taoyuan International Airport departs from Taipei Taoyuan International Airport at 09:55 and arrives at Shanghai Pudong International Airport at 12:05.
The flighttime is about 2h 10m. The distance travelled ("as the bird flies"): 358 Km. So the average speed is roughly 165 Km.
The best day to arrive at Taipei is Monday and it would be best to avoid Sunday, as prices are on average 57.56% higher than on Monday. (Average prices, based on 117403 datapoints.)
We have a lot more statistics for flights CX 712 and between Taipei and Shanghai.
THB