Flight Soekarno–Hatta International Airport departs from Jakarta Soekarno–Hatta International Airport at 16:45 and arrives at Bangkok Suvarnabhumi Airport at 20:15.
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 December. (Average prices, based on 2702 datapoints.)
The best day to arrive at Jakarta is Tuesday and it would be best to avoid Friday, as prices are on average 38.7% higher than on Tuesday. (Average prices, based on 48577786 datapoints.)
We have a lot more statistics for flights QZ 252 and between Jakarta and Bangkok.