Australian Capital Territory
Face masks are mandatory for people aged 12 and above, including workers who interact with the public, while inside the Canberra Airport terminal and during domestic commercial flights in and out of Canberra. Mask wearing is not required outside the terminal of Canberra Airport however, passengers embarking and disembarking a flight on the tarmac must remain wearing them.
The following exceptions apply: children under 12, people with a medical condition or disability that makes wearing a mask unsuitable, during an emergency, when eating, drinking or taking medication, when removing the mask is necessary for communicating effectively and when wearing a mask is a risk to health and safety. Other exemptions are listed here.
Wearing a face mask is not mandatory for the public in the Northern Territory and is at the discretion of individuals. However, masks are mandatory at all NT airports and while on board an aircraft.
Children under 12 and individuals with a specified medical condition, are exempted from this regulation. Mask wearing is not required during an emergency, while consuming food or beverage, when communicating with someone who is hearing impaired or while wearing an oxygen mask.
State Government guidelines are available here.