How many more miles is it to travel to jakarta then to london

It all depends where you start from, and what route you take.

For me, if I take the shortest possible route, then it's 3,956 miles to London
and 9,809 miles to Jakarta.  So for me, Jakarta is 5,853 miles farther.

But if you're starting from, say, Singapore, then London is 6,192 miles
farther away than Jakarta.