International travelers traveling to and from Australia often do not have enough information about the available transport options and their schedules/prices when switching between domestic and international terminals for connecting flights.
Tips website Lifehacker has a handy guide that explains terminal switching options at 8 major Australian airports – Sydney, Melbourne, Brisbane, Perth, Adelaide, Cairns, Darwin and Gold Coast.
At Sydney, the Airport Link Train, running at least once every 15 minutes and connecting domestic and international terminals, is the recommended option and costs $5 per person one-way. Both Virgin Australia and Qantas/Jetstar offer free bus rides at the airport for their passengers with connecting flights in different terminals.
At Brisbane, the Brisbane Airtrain runs frequently between the domestic and international terminals and costs $5 per person one-way. For passengers on Virgin Australia with either an international or a domestic flight connection there is no charge. Passengers with connecting flights on either Qantas/Jetstar or Virgin can take a bus at no cost.
A free bus shuttle runs every 20 minutes between the terminals at Perth Airport, between the hours of 6:00 am and midnight. Thereafter the service is reduced to every 30 minutes.
Melbourne, Adelaide, Darwin, Cairns and Gold Coast airports either have a single terminal or have domestic and international terminals within 5 minutes walking distance from each other. No special connecting transportation is required.