Flight Soekarno–Hatta International Airport departs from Jakarta Soekarno–Hatta International Airport at 14:20 and arrives at Taipei Taipei Songshan Airport at 20:45.
The flighttime is about 13h 25m. The distance travelled ("as the bird flies"): 2129 Km. So the average speed is roughly 159 Km.
There is an 7 hour time difference between Jakarta and Taipei
The best month to arrive at Jakarta is March and the most expensive month to fly is June. (Average prices, based on 1998 datapoints.)
We have a lot more statistics for flights PR 238 and between Jakarta and Taipei.