Flight Suvarnabhumi Airport departs from Bangkok Suvarnabhumi Airport at 08:00 and arrives at Jakarta Soekarno–Hatta International Airport at 11:35.
The flighttime is about 3h 35m. The distance travelled ("as the bird flies"): 830 Km. So the average speed is roughly 232 Km.
The best day to arrive at Bangkok is Monday and it would be best to avoid Sunday, as prices are on average 92.01% higher than on Monday. (Average prices, based on 13171964 datapoints.)
We have a lot more statistics for flights EK 433 and between Bangkok and Jakarta.