The 420 bus services Sydney Airport, but this doesn’t operate to or from the CBD. The 420 operates around Mascot, or Burwood in the alternative course. You usually takes a bus from Sydney Airport to Mascot and hook up with the town by way of coach as we’ve outlined above, https://sydneyinternationalairpor41850.wikifrontier.com/7675187/helping_the_others_realize_the_advantages_of_sydney_international_airport_taxi