Sydney's second airport is due to open in a few months' time, with the concept first suggested nearly 90 years ago.

After months of wrangling, the national carrier has reached agreement to get passengers moving in and out of the new Western Sydney International Airport.

The long-awaited launch of passenger flights to Western Sydney Airport will follow the start of cargo aircraft taking off from the new aviation hub next month.

After 15 years of planning, seven years of construction and a year of testing, Western Sydney International Airport has confirmed its opening date for passengers.

Jetstar will operate the airport's first commercial passenger flight with an Airbus A320 set to jet off to the Gold Coast.

Sydney's second airport is due to open in a few months' time, with the concept first suggested nearly 90 years ago.

Western Sydney Airport in Badgerys Creek will operate 24 hours a day, unlike its current counterpart, which is subject to noise regulations.

The departure board is finally firing up at Western Sydney Airport, with October 25 locked in as the date for