Flight Soekarno–Hatta International Airport departs from Jakarta Soekarno–Hatta International Airport at 14:30 and arrives at Hong Kong Hong Kong International Airport at 20:25.
The flighttime is about 4h 55m. The distance travelled ("as the bird flies"): 1340 Km. So the average speed is roughly 273 Km.
There is an 1 hour time difference between Jakarta and Hong Kong
The best day to arrive at Jakarta is Tuesday and it would be best to avoid Friday, as prices are on average 23.15% higher than on Tuesday. (Average prices, based on 21446974 datapoints.)
This graph shows the distribution of prices found in the past years for this flight. (Average prices, based on 666 datapoints.)
We have a lot more statistics for flights CX 776 and between Jakarta and Hong Kong.