Avalon rail link is currently in planning/design phase with a branch coming off the Geelong line and a station at the terminal.
Tullamarine rail link is possible but the only government commitment is to a study of possible routes. The management probably have no interest in a rail link as it would compete with the skybus, parking and taxi rights. To see how Melbourne airport views low cost public transport find out where you can get on the local 901/478/479/500 bus services (they do go to the airport).
901 to Broadmeadows station thence city (zone 1+2 ticket 2hr), $6 weekdays $3.50 weekends (less for concession/pension).
Skybus to city $17
Taxi to city??
Rail links to either airport are a matter for the state government not the airports themselves.
Last edited by 43Inches; 26th Apr 2013 at 05:47.