Flight Narita International Airport departs from Tokyo Narita International Airport at 20:45 and arrives at Taipei Taoyuan International Airport at 23:25.
The flighttime is about 3h 40m. The distance travelled ("as the bird flies"): 2260 Km. So the average speed is roughly 616 Km.
There is an 1 hour time difference between Tokyo and Taipei
NZD
