Tony Abbott's government is set to nominate Badgerys Creek in far-west Sydney as the site of the city's next airport.

Incoming deputy prime minister Warren Truss said the Abbott government would not delay the question of another Sydney airport by more studies and would base its decision on major analysis completed last year by the federal and state governments.

No more delays: Coalition set to firm up Badgerys Creek as the site for Sydney's second airport. Credit:Brendan Esposito

That study overwhelmingly backed Badgerys Creek, about 50 kilometres west of Sydney's CBD, as the best option. It also suggested an existing Royal Australian Air Force Base at Richmond in north-west Sydney could be used for limited commercial aviation before Badgerys was built.

"We need to identify where the second airport will be built and something about the timetable," Mr Truss said on Monday.