Flight Soekarno–Hatta International Airport departs from Jakarta Soekarno–Hatta International Airport at 14:20 and arrives at Bangkok Suvarnabhumi Airport at 17:50.
The flighttime is about 3h 30m. The distance travelled ("as the bird flies"): 830 Km. So the average speed is roughly 237 Km.
The best month to arrive at Jakarta is October and the most expensive month to fly is June. (Average prices, based on 11843 datapoints.)
The best day to arrive at Jakarta is Tuesday and it would be best to avoid Friday, as prices are on average 34.25% higher than on Tuesday. (Average prices, based on 40875369 datapoints.)
We have a lot more statistics for flights QZ 256 and between Jakarta and Bangkok.