Darwin is quite isolated from the rest of Australia, so the best way to get there is by air. You'll find connections between Darwin International Airport and all major Australian cities, as well as some cities in Asia. It is possible to take the train or long-distance bus to Darwin, but these are very long trips, and the train is extremely expensive. Enterprise Rent-A-Car can be found at the airport, and your trip to downtown will take less than 20 minutes.