Home Postcode finder NT Darwin International Airport Darwin International Airport postcode NT Darwin International Airport is a locality in Northern Territory covered by postcode 0820. Postcode 0820 State or territory Northern Territory (NT) Region Darwin Add a free Darwin International Airport business listing Be the first listing in Darwin International Airport Common questionsWhat is the postcode for Darwin International Airport?Darwin International Airport, NT has the postcode 0820.What state is Darwin International Airport in?Darwin International Airport is in Northern Territory (NT).Does postcode 0820 cover more than one suburb?Yes. Postcode 0820 covers 18 localities, so the postcode alone does not identify Darwin International Airport. Browse other postcodes in Northern Territory , or widen the search to every Australian postcode.