Originally Posted by
CAPT Tee
Try booking a R/T CDG-SYD-CDG with the return flight back to SYD far into the future as possible and pay the change fee when you are ready for the next trip to CDG.
This is pretty good advice. Booked FCO/SAN/FCO this year and the change fee was only 100euros when I needed to move the return. Much better than $250USD if I had booked x-SAN.