Construction began three years ago for the international airport, also known as Nancy-Bird Walton Airport, at Badgerys Creek, 45km from the Sydney CBD which is due to open in late 2026.
It will be the first airport in NSW with no curfew, allowing flights to operate around the clock, seven days a week.
The proposed flight paths, along with estimated aircraft noise impacts, became available on Tuesday for surrounding communities through an online interactive Aircraft Overflight Noise Tool.
The tool allows people to type in their address to get a clear picture of the preliminary flight paths, including the expected altitude at that location, daily aircraft numbers and the predicted aircraft noise.
Supporting material explains the approaches to the preliminary flight paths design and noise modelling.
The federal Transport Department will hold community information and feedback sessions across Western Sydney and the Blue Mountains in the coming months.
"Communities will be able to find out more information and speak with the flight path design team at these events," Transport Minister Catherine King said on Tuesday.
"The Albanese government is committed to balancing the needs of the community, environment, industry and users of the broader greater Sydney airspace, while maintaining safety as a priority, in the design of [the airport's] flight paths," she said.
The preliminary flight paths were developed according to airspace design principles reflecting community feedback from "proof-of-concept" flight paths released in 2015.
These include minimising flights over residential areas and reducing the impact on the community of aircraft operations at night.
Later this year, the federal government will release a draft environmental impact statement examining the noise, social and environmental impacts of the preliminary flight path.
It will include a draft noise insulation and property acquisition policy.
The airport project will cost $5.3 billion.
The tool is available at: wsiflightpaths.gov.au
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