Flight Soekarno–Hatta International Airport departs from Jakarta Soekarno–Hatta International Airport at 13:45 and arrives at Singapore Changi Airport at 16:35.
The flighttime is about 1h 50m. The distance travelled ("as the bird flies"): 369 Km. So the average speed is roughly 201 Km.
There is an 1 hour time difference between Jakarta and Singapore
IDR
