If your travel to Canada will involve transit through the United States, even if your flight just touches down for refuelling anywhere in the USA, including Honolulu,

OR

if you anticipate visiting or crossing the land border to the United States during your stay in Canada, you may be required to obtain a U.S. visa.

It is strongly recommended that you contact the American Embassy or Consulate responsible for your place of residence to clarify whether your travel plans necessitate a U.S. visa.

For online information on U.S. visa requirements for Australian Passport holders, please refer to http://canberra.usembassy.gov/consular/visas.html

The Canadian Consulate General cannot provide information on visa requirements for U.S. or any other country.