Flight Soekarno–Hatta International Airport departs from Jakarta Soekarno–Hatta International Airport at 08:40 and arrives at Lombok Lombok International Airport at 11:40.
The flighttime is about 2h 00m. The distance travelled ("as the bird flies"): 1073 Km. So the average speed is roughly 536 Km.
There is an 1 hour time difference between Jakarta and Lombok