*Carry-on Baggage Requirements

As of March 31, 2007 all passengers flying to and from Australia on international flights will only be permitted to carry small quantities of liquids, gels or aerosols in their cabin or carry-on luggage. Small containers of 100 mls (3.5 fl oz) are permitted and must be sealed in a transparent plastic bag. Details of the new security measures can be found at the Department of Transport website.
Domestic travel is not affected by these regulations.

---Lonely Planet Australia guide