The best month to fly with Flight GA138 is November and the most expensive month to fly is June. (Average prices, based on 1270 datapoints.)
The best day to arrive at Jakarta is Saturday and it would be best to avoid Sunday, as prices are on average 56.56% higher than on Saturday. (Average prices, based on 122225505 datapoints.)
This graph shows the distribution of prices found in the past years for this flight. (Average prices, based on 317 datapoints.)