Flight Soekarno–Hatta International Airport departs from Jakarta Soekarno–Hatta International Airport at 17:40 and arrives at Jambi Sultan Thaha Airport at 19:00.
The flighttime is about 1h 20m. The distance travelled ("as the bird flies"): 360 Km. So the average speed is roughly 270 Km.
The best day to arrive at Jakarta is Wednesday and it would be best to avoid Saturday, as prices are on average 318.15% higher than on Wednesday. (Average prices, based on 40860549 datapoints.)
We have a lot more statistics for flights JT 3808 and between Jakarta and Jambi.