Oneworld: UL: DXB-CGK in J, $800 R/T
UL seem to be having a J class sale - DXB-CMB-CGK r/t for around $800 in J - books into 'I' Class.
With BA that 560TPs return, and 8234 Miles.
Combination of A333/A332 and A321 depending on the days you choose. Can only book direct with UL for this price.
However, there are 2 flights a day from DXB on UL, and you want to choose wisely:
UL use an A333/A332 between DXB/CMB on the night departure at 2250 hours. And on a Sundays, UL fly an A332 between CMB-CGK (and back), so you can in theory go in comfort the whole way. On any other day, it's an A321 between CMB-CGK.