The Australian Airports Association (AAA) has said that the aviation capacity requirements of the Sydney region can be met without investing in a second major airport.
The AAA said Bankstown, Camden, Canberra and Newcastle airports are all able to meet the aviation activity demand that is forecast in Sydney Airport's master plan, approved in 2009.
AAA executive director Caroline Wilkie said the five airports can meet Sydney's medium- to long-term aviation needs, according to The Sydney Morning Herald.
"Sydney Airport has the capacity to meet forecast aviation demand in the Sydney region to at least 2029," Wilkie said.
In 2008, the federal government began to search a site for a second major airport, which would cost around A15bn ($14.7bn).
The AAA has recommended investing the funds on improving existing ground transport infrastructure to link Sydney's central business district and current airport assets in New South Wales.