Sydney is about to undergo one of the biggest changes to its aviation network in decades.
Western Sydney International Airport will welcome its first commercial passengers on October 25, 2026, opening a second major gateway for Australia's largest city.
The new airport, officially named Western Sydney International (Nancy Bird Walton) Airport and identified by the code WSI, is located at Badgerys Creek, around 44 kilometres west of Sydney's central business district.
After 15 years of planning, seven years of construction and extensive operational testing, the airport is now preparing for its first passenger flights.
Jetstar will make the first flight
Jetstar will become the first airline to carry commercial passengers from the new airport.
Flight JQ362 is scheduled to depart Western Sydney for the Gold Coast at 11 a.m. on Sunday, October 25, using an Airbus A320.
Jetstar will initially connect WSI with Melbourne, Brisbane and the Gold Coast.
The airline plans up to 14 weekly services between Western Sydney and Melbourne, along with regular flights to Brisbane and the Gold Coast.
The launch will be particularly significant for millions of residents in western Sydney who currently have to travel across the city to use Sydney Kingsford Smith Airport.
International flights begin the next day
Passengers will not have to wait long for international services.
"Air New Zealand" (https://www.airnewzealand.com/?utm_source=chatgpt.com) will become the first international airline to serve WSI when flights between Auckland and Western Sydney begin on October 26.
The airline plans three return services each week, operating on Mondays, Wednesdays and Fridays using Airbus A320 and A321 aircraft.
The route gives travelers another option between Australia and New Zealand while allowing Air New Zealand to continue operating at Sydney's existing Kingsford Smith Airport.
The airline estimates that the new Western Sydney service will directly serve a catchment of more than 2.5 million people.
Singapore flights arrive in November
Another major international connection will follow less than a month later.
"Singapore Airlines" (https://www.singaporeair.com/?utm_source=chatgpt.com) will begin daily flights between Western Sydney and Singapore Changi Airport on November 23.
The Singapore route is important because Changi provides connections to destinations throughout Asia, Europe and other regions.
For international travelers, the arrival of both Air New Zealand and Singapore Airlines means WSI will immediately operate as more than a domestic alternative to Sydney Airport.
More carriers are expected to consider Western Sydney as the airport establishes itself.
Sydney finally gets a 24 hour airport
One of WSI's biggest advantages is something passengers may never see directly.
The airport has no nighttime curfew.
Sydney Kingsford Smith Airport operates under restrictions between 11 p.m. and 6 a.m., limiting the number and type of aircraft movements possible overnight.
Western Sydney International has been specifically designed for continuous operation.
That gives airlines significantly more flexibility when scheduling flights between Australia, Asia and other long haul destinations.
It could also become particularly valuable for freight operators, which often prefer overnight departure and arrival times.
From November 1, WSI is expected to become Sydney's main airport for regular overnight freight operations.
The airport can handle 10 million passengers
Western Sydney International has initially been designed to accommodate as many as 10 million passengers annually.
But that is only the beginning.
The airport has been designed so its terminals, runways and supporting infrastructure can expand as passenger demand grows.
Western Sydney itself is now Australia's third largest economy and contains roughly half of Sydney's population, according to the Australian government.
The airport is therefore positioned to serve a huge local population rather than functioning simply as an overflow facility for Sydney's existing airport.
Travelers should check their Sydney airport carefully
The arrival of WSI creates something travelers visiting Sydney will increasingly need to watch when booking flights.
Sydney will now have two major passenger airports.
A ticket showing SYD means Sydney Kingsford Smith Airport, close to the city centre.
A ticket showing WSI means Western Sydney International Airport at Badgerys Creek.
That distinction could significantly affect ground transportation and journey times.
WSI says more than 65 percent of Sydney can reach the new airport within approximately 45 minutes, depending on traffic and the starting location.
One important transport link is missing
There is one major complication for travelers arriving during the airport's early months.
The planned Sydney Metro connection will not be available when passenger flights begin.
ABC reported that the metro line, originally intended to open alongside the airport, could be delayed until 2028.
That means many passengers will initially depend on cars, taxis, rideshare services, buses and airport parking.
Major road infrastructure has been built or upgraded around the airport, including the M12 Motorway.
More major routes are coming
Western Sydney's network will continue expanding after opening day.
Qantas is scheduled to begin passenger services from WSI on March 28, 2027, with QantasLink flights to Melbourne and Brisbane.
October will also bring a wider wave of new airline routes around the world.
Aviation Week reports that around 50 new routes are scheduled to launch during the month, including Finnair's new Helsinki to Melbourne service via Bangkok and new long haul connections linking Europe, Canada, Asia and the Middle East.
But few aviation developments will be as significant for Australia as the opening of an entirely new major airport.
On October 25, the first Jetstar passengers will walk through WSI's terminal and board a flight to the Gold Coast.
From that moment, travelers heading to Sydney will have a new airport code worth remembering: WSI.
