Originally Posted by
Guy Betsy
SFO-SIN-SFO eg $1200 + SIN-SFO-SIN eg $2400 = $3600
SFO-SIN-SFO + another SFO-SIN-SFO = S$2400
You have to start in SIN somehow, and the 2nd option doesn't let you do that. However, using your eg prices, option 1 is $3600, where 2x SIN-SFO-SIN is $4800, saving the OP $1200.