Sydney Airport (Kingsford Smith) is only nine kilometres from the centre of Sydney. International and domestic terminals are on opposite sides of the airport. The Sydney International Airport Terminal is one building and the Sydney Domestic Airport is spread over a number of buildings and used by Virgin Blue, Qantas, Rex and Jetstar.
If arriving from an overseas location you will have to pass through quarantine as well as customs. This is a very strict process and nearly all bags are X-rayed and many searched.