Flight Narita International Airport departs from Tokyo Narita International Airport at 16:35 and arrives at Taipei Taoyuan International Airport at 20:00.
The flighttime is about 4h 25m. The distance travelled ("as the bird flies"): 2260 Km. So the average speed is roughly 512 Km.
There is an 1 hour time difference between Tokyo and Taipei
The best day to arrive at Tokyo is Tuesday and it would be best to avoid Wednesday, as prices are on average 550.75% higher than on Tuesday. (Average prices, based on 1951825 datapoints.)
We have a lot more statistics for flights MM 627 and between Tokyo and Taipei.