An international airport decades in the making is set to finally open in October.
Western Sydney International Airport's inaugural flight will take off on October 25, with its executives pledging to help ease demand on some of Australia's busiest domestic routes.
Jetstar and Qantas tickets go on sale from Wednesday morning, with the budget carrier to run a combined 21 services a week to Melbourne, Brisbane and the Gold Coast.
Qantas will begin flying to and from the airport in March 2027.
The first flight out of Sydney's second airport will be a Jetstar service to the Gold Coast at 11am on October 25.
WSI chief executive Simon Hickey said services announced on Wednesday morning were a starting point, with availability set to grow and provide customers more choice.