When flying with perfume, the amount you can carry in your luggage could be subject to liquid restrictions set by your airport security regulations. Here are the current regulations regarding liquids set by the Australian Border Force*.
If you are flying domestically (flying within Australia), there are currently no restrictions for the amount of liquids you can take in your carry-on. However, it is always best to check with the airline prior to departure in case these regulations have changed. If in doubt, you can always put these in your checked-in bags.
For any flights that are international, there is a limit for liquids, aerosols and gels of 100ml (volume) and 100g (or less). The container is also included in the weight. Note: The container also cannot exceed 100ml, so unfortunately it also means you can't have a half filled 200ml perfume. Note: These limits also apply for domestic flights that depart from an International terminal.
There is no limit on liquids in your checked-in bags.
Typically, there is also no limit on liquids in your checked-in bags for International flights, however it is always best to check with the airline you are flying with in case they have any specific rules.
When transporting liquids in your checked-in baggage, it is recommended to put them in a zip-lock bag just in case of any leakages during transit. We also recommend that you wrap your perfumes in a protective material like bubble wrap, or a soft piece of clothing like a jumper or wrap it in a sock (or two).
*For the most up-to-date information - it can be helpful to refer to Australian Border Force.