Two public bus routes, the 350 plus the 410, go via the airport. Possibly of these buses will get you to a educate station on town rail community. The eastbound bus’s favored possibility; ask the driver to Allow you to off at Mascot station and change to your town teach. https://conneroctkx.dbblog.net/3745442/sydney-international-airport-taxi-no-further-a-mystery