ST MARYS is on track for a direct rail link to Badgerys Creek airport.
The state government has started community consultation to identify and set aside a future corridor for a South West Rail Link extension to Sydney's second airport.
It's part of planning for a continuation of the South West Rail Link to extend to Badgerys Creek and on to St Marys, where it would connect with Western Line services.
"Planning ahead now by securing this public transport corridor will ensure an effective public transport system can be extended through Western Sydney as it is needed, benefiting residents," Mulgoa MP Tanya Davies said.
"The proposed corridor will help create north-south transport options for movement within western Sydney helping people to access jobs and services and contribute to the growth of liveable communities in the area - including St Marys.
"Connecting the corridor at St Marys would enable customers to directly access destinations along the Western Line."
Londonderry MP Bart Bassett also welcomed the plans but called for a another consultation phase to preserve a land corridor to connect the North West Rail Link to the Western Line.
"Why stop at the Western Line?" he said.
No Badgerys Creek Airport Inc secretary and Blacktown councillor Stephen Bali had his doubts.
"St Marys isn't a major stop on the Western Line," he said.
"It means people living in Penrith will have to switch trains at St Marys. It's not a well co-ordinated plan."