Road near the Western Sydney Airport under construction With the designation of the site as the location of Sydney's second airport, announcements were made on new and upgraded transport links to the airport and the surrounding areas of western Sydney. Known as the
Western Sydney Infrastructure Plan, it included: • A new M12 east-west motorway to the airport, around the current alignment of Elizabeth Drive between the
M7 Westlink Motorway and
The Northern Road • Upgrading of
The Northern Road (A9) to a minimum of four lanes from
Narellan to the
M4 Western Motorway • Upgrading of Bringelly Road to a minimum of four lanes between
The Northern Road and
Camden Valley Way All projects of the Western Sydney Infrastructure Plan were completed prior to the airport opening, with the M12 motorway opening on 14 March 2026.
Public transport Rail In 2018, the federal and state governments announced the development of stage 1 of the North South Rail Link, now referred to as Sydney Metro Western Sydney Airport, as part of the Western Sydney City Deal. The rail project involves the construction of a line as part of the
Sydney Metro system. The line will operate between
St Marys station, including a new interchange with the
Main Western railway line, and
Bradfield station. Services will stop at the
Airport Terminal and
Airport Business Park stations within the airport precinct. Construction of the line commenced in December 2022 and was expected to be complete in late 2026, in time for the opening of the airport. However, it has been reported that operations may not commence until 2027. The state government later announced that between the airport opening and metro opening, services would be provided by a free interim bus service between the airport and St Marys.
Bus New express bus routes to the airport precinct were announced in March 2018, running from
Penrith,
Liverpool and
Campbelltown. • 772:
Mount Druitt to WSI via
St Clair • 790: Penrith to WSI via
Kingswood • 825: Liverpool to WSI via
Bonnyrigg • 845: Campbelltown to WSI via
Oran Park and
Bradfield • 860: Liverpool to WSI via
Leppington and Bradfield In March 2026, it was announced that the bus services would begin on 5 July 2026. The free interim bus service between St Marys and the airport that would run until the metro line opening in 2027 will be a separate service to the five bus routes. == Criticism ==