As someone who lives in Jakarta , anyone thinking of transferring by Taxi (Bluebird etc) is both crazy and at risk of missing a flight , YOU SHOULD TRANSFER AIR SIDE, its easy , quick and free

If you take a taxi , what if its raining or rush hour ? or there is an accident on the road , to go from T3 to T2 you have to join the highway and then turn around and go back on yourself .