We do not have enough data on this route to provide a reliable graph showing how many days before departure it is the best to book.
However, usually the closer it is to the departure, the more expensive the tickets are.
The most popular airlines on the route Paris - Sydney: China Southern (CZ), Emirates (EK), KLM (KL).
The cheapest flights are on the route Charles de Gaulle (CDG) - Kingsford-Smith (SYD).
There is no direct flight on the route from Paris to Sydney
Il volo con scalo più breve dura 25h 25min.
Paris Sydney