Sydney second airport announcement expected

The federal government is on the cusp of approving Badgerys Creek as the site for Sydney's second airport.

Federal cabinet will meet on Tuesday to tick off the long-awaited decision, Fairfax Media reports.

Badgerys Creek, some 50km west of Sydney's CBD, has for decades been named as a possible site for a second facility, taking pressure off Kingsford Smith Airport which is restricted by a curfew.

Major political players have reached agreement on the site and cabinet's tick is a foregone conclusion, reads a report by The Sydney Morning Herald.

The NSW government supports the Badgerys Creek site but wants to see adequate federal funding to provide transport links and other essential infrastructure.