Originally Posted by
CPH-Flyer
Tokyo Singapore Tokyo is quite expensive in business class. It would normally come in around 220K yen. though at times you could probably find it in the 180K yen range. Splitting the ticket to add an ex-Tokyo flight is not very likely to save you anything.
I see. I wonder if it might be best for OP to pay cash for the business class ticket to Asia and then use miles to fly TYO-SIN.