Flight Soekarno–Hatta International Airport departs from Jakarta Soekarno–Hatta International Airport at 08:45 and arrives at Solo Adisumarmo International Airport at 10:00.
The flighttime is about 1h 15m. The distance travelled ("as the bird flies"): 458 Km. So the average speed is roughly 366 Km.
The best month to arrive at Jakarta is October and the most expensive month to fly is June. (Average prices, based on 9149 datapoints.)
We have a lot more statistics for flights GA 222 and between Jakarta and Solo.