Flight Narita International Airport departs from Tokyo Narita International Airport at 15:20 and arrives at Taipei Taoyuan International Airport at 18:40.
The flighttime is about 4h 20m. The distance travelled ("as the bird flies"): 2260 Km. So the average speed is roughly 522 Km.
There is an 1 hour time difference between Tokyo and Taipei
The best month to arrive at Tokyo is March and the most expensive month to fly is July. (Average prices, based on 1821 datapoints.)
The best day to arrive at Tokyo is Monday and it would be best to avoid Saturday, as prices are on average 24.69% higher than on Monday. (Average prices, based on 2138216 datapoints.)
We have a lot more statistics for flights GA 451 and between Tokyo and Taipei.