From Canberra airport fly to Sydney airport. 50min $106. From Canberra International Airport Bus to Central Station Platform 23 then train to International Airport Station Platform 2. 4hrs 59min $71. From Gladstone St opp Coates Hire bus to Canberra station, train to Campbelltown Station Platform 2, then train to International Airport Station Platform 1. 5hrs 34min $57. From Canberra drive to Sydney. 2hrs 55min $33.