Originally Posted by
laddielad
How do you know if that works? Can't plug into aeroplan multi city since it only accepts 3 flights
YVR-SIN-CDG-YVR
Since one of the routings it offers is YVR-NRT-SIN-CDG-YVR, a reasonably safe bet that it'll let you fly the same routing with stopovers instead of layovers.