Taipei Taoyuan Airport Train
Aside of the MRT, there are other means to downtown Taipei by train.
At Taoyuan Airport there isn’t train connections. Passengers cna link to High Speed Rail.
Taiwan High Speed Rail
Taiwan High Speed Rail Taoyuan Station is about 8 km (5 mi) from Taipei Airport and is accessible by MRT System.
It is easy to get to the High Speed Rail station from Taoyuan Airport:
Taoyuan Airport to Taoyuan HSR by MRT
You should simply ride MRT straight to HSR Taoyuan Station which takes approx. 20 minutes.
Taoyuan Airport to Taoyuan HSR by Bus
On the other hand, you can also get there by bus 706 (to Taoyuan City) to HSR Taoyuan Station which takes just 25 minutes.
From there, you can catch one of the HSR trains.
On the way back, there are check-in counters at the station for China Airlines and EVA Air flights.
Buses depart every 40-60 minutes and a single-ticket is NT$ 48.