Can I get an Australian ETA at the airport? It is not possible to get the ETA at the airport. All those who need to apply for an Australian visa must do so before they reach the border. Only New Zealand citizens can get a visa when they arrive.
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You must have a valid U.S. passport and a visa or an approved Electronic Travel Authority (ETA) to enter Australia. Most U.S. passport holders traveling to Australia for tourism or business purposes for less than 90 days can obtain an ETA.
If you are denied entry into Australia, you will be held at the airport until arrangements can be made to return you to the United States or another country where you hold a valid visa to reside. You are not under arrest – you are simply not eligible to enter Australia on this visit.
Unless you are an Australian citizen, you will need a valid Australian visa to enter the country. New Zealand passport holders can apply for a visa upon arrival in the country.