Originally Posted by
tnkngn
However when going through the booking at United.com it ends up being 50.000 points. Is this correct?
Yes -- sort of. UA no longer has the "24 hour" rule. If your flights don't show on a search from origin to destination, you're charged the point-to-point rate for each flight.
If you can get the flights you want to appear on a
SIN-CGK search, you can book them for 25K. If it requires multi-city search, it becomes 50K.