The 1st US-South Australia Boeing 787 Route Just Shrunk To 23 Flights Before Its 1st Full Season

Prachi is a London-based journalist with extensive experience in the aviation industry. She has worked for several leading industry publications, covering a broad range of topics. Her expertise lies in aircraft maintenance, emerging technologies, and advanced air mobility. She is currently pursuing a PhD in Journalism, focusing on data journalism and its potential to transform conventional aviation reporting.

For many years, flights between the US and Australia were subject to restrictions on how airlines could operate between the two countries. Airlines generally had to route services across the South Pacific, although some also used the North Pacific. That changed in 2008, when the US and Australia introduced an Open Skies agreement.

This removed many restrictions on capacity and frequency and gave airlines more freedom to expand their services. The US-Australia market has grown considerably since then. According to scheduled data from aviation analytics company Cirium, airlines have scheduled around 11,295 flights between the two countries in 2026, offering approximately 3.3 million seats.

Only five airlines currently operate nonstop services between the US and Australia. United Airlines is one of the largest operators in the market. It has scheduled around 3,700 flights between the two countries this year, offering approximately 960,507 seats.

United Has Connected The US & Australia Since The 1980s

United has served Australia for four decades. The Chicago-based carrier started its Australian operations in February 1986, following its acquisition of Pan Am’s Pacific division. The deal gave United access to routes across the Pacific, as well as aircraft and other assets that supported its international expansion. Its first service operated from Los Angeles International Airport (LAX) to Sydney Airport (SYD) on February 12, 1986. The airline also started flying to Melbourne at the same time.

According to historical reports, the Star Alliance founding member initially relied on Boeing 747s for its Australian services and used different routings depending on the schedule. Some services included intermediate stops, including Honolulu and Auckland. At the time, the only nonstop service connecting Australia (or even New Zealand) with the US mainland was United’s Los Angeles-Sydney route. The US airline continued to expand its Australian network during the 1990s.

It added Brisbane and introduced flights between San Francisco and Sydney. Notably, United also had a presence in Cairns via Guam. The service was initially operated by Continental Micronesia as part of Continental's Pacific network. Following the 2010 merger between Continental Airlines and United, the airline inherited the Pacific network and continued operating the route under its brand.

United eventually stopped the Guam-Cairns service on September 26, 2015, citing its financial performance and shifting asset allocations. Today, it serves four Australian cities. The airline flies to Sydney from San Francisco, Los Angeles, and Houston; Melbourne from San Francisco and Los Angeles; Brisbane from San Francisco; and Adelaide from San Francisco.

United Cuts More Than Half Of Its Planned Adelaide Flights For Winter 2026/27 Season

The route in question is United’s service between San Francisco and Adelaide. The airline launched the route in December 2025 as a seasonal service, operating three flights a week on the Boeing 787-9 Dreamliner that features 48 United Polaris business class seats and 21 United Premium Plus seats.

Historically, passengers traveling from Adelaide to the US have had to connect elsewhere in Australia, such as Brisbane, Melbourne, or Sydney. United’s nonstop service now gives passengers a direct option to travel from San Francisco to Adelaide on a flight that takes nearly 15 hours. It is the first scheduled nonstop service between North America and South Australia.

For its first season, the airline operated flights between December 11, 2025, and March 26, 2026. The Star Alliance member initially planned to operate the route for a longer period in 2026/27, from December 3, 2026, to March 25, 2027, with three flights a week (every Monday, Wednesday, and Saturday). However, the latest schedule shows that the upcoming season will be considerably shorter than originally planned.

The revised schedule removes roughly two weeks from the start of the season and around seven weeks from the end. So, United now plans to operate the service from December 17 through February 8, 2027. That reduces the planned schedule from 49 return flights to just 23, a 53.1% cut.

Why United May Have Shortened Its Adelaide Season

When United launched its San Francisco–Adelaide service, it was expected to deliver a significant boost to South Australia’s tourism industry and wider economy. There was already a sizeable US visitor market in the state. In the 2024 financial year, South Australia welcomed around 44,000 visitors from the US. These visitors contributed approximately $81 million to the state’s economy. The new nonstop service was expected to build on that growth.

According to the South Australian Tourism Commission, the route had the potential to generate an additional $22 million in tourism and freight activity. At the time, South Australia’s Minister for Tourism, Zoe Bettison, described the new link as a “game changer”. However, demand for a destination does not automatically translate into enough passengers to sustain a new long-haul route.

Airlines face considerable financial risks when launching services between city pairs that have not previously had nonstop connections. These risks can be particularly significant on ultra-long-haul routes, where airlines must commit expensive widebodies to flights that can take up a substantial part of their operating day.

Therefore, financial incentives can help airlines manage some of that uncertainty. In United’s case, there are some reports that the route received financial support from the South Australian Government, although the full details of the arrangement are not publicly clear. Indeed, such support can help establish a new service, but it does not guarantee that passenger demand will be as strong as they project. The initial passenger figures suggest that the US airline faced a challenging start.

US Department of Transportation data shows that the airline carried 11,778 round-trip passengers on the route during its first season, achieving an average seat load factor of just 52.7%. In other words, just over half of the available seats were occupied on average. Initially, when the service began and holiday travel supported the demand, the load factor peaked at 68.5%. It then fell to just 33.7% in February 2026.

Of course, load factor is only one measure of a route’s performance, as it does not account for ticket prices, cargo revenue, or operating costs. However, these figures explain why United may have decided to shorten the upcoming season. However, passenger numbers may not be the only factor behind the change. A spokesperson for the airline told Aero South Pacific that it “regularly make[s] changes to [its] schedule due to aircraft availability, market dynamics and other factors.”

United Australia Network For The Upcoming Winter Season

Elsewhere in Australia, United has also reduced frequencies on its San Francisco–Brisbane route this winter. During October and November, the airline is operating five weekly flights on the route, down from seven per week during the same period last year.

Overall, the carrier has scheduled around 989 flights from the US to Australia during the 2026 winter season, offering approximately 248,640 seats one-way. It continues to operate year-round daily services to Melbourne and Sydney from both San Francisco and Los Angeles. It will also bring back its seasonal service between Houston and Sydney.

Australia Will Get A New Nonstop Link To Las Vegas This Winter

Apart from United, American Airlines, Delta Air Lines, Alaska Airlines, and Qantas also serve the US–Australia market. Combined, the airlines have scheduled more than 5,200 flights between the two countries for the upcoming winter season, offering over 1.4 million seats. Qantas and United account for most of this capacity.

Perhaps one of the more interesting developments this winter will be Qantas’ new service between Sydney and Las Vegas. The airline is launching the route on December 29, 2026, with three flights a week. The seasonal service is scheduled to run until March 12, 2027. Notably, Las Vegas was the largest unserved US destination from Sydney.

Booking data for the 12 months to May 2026 shows that around 51,000 passengers traveled between the two cities, most connecting through Los Angeles or San Francisco. Qantas will be looking to tap into this existing market and build point-to-point demand with its new nonstop service. It remains to be seen how the route performs during its first season.

United’s Adelaide Schedule Shows The Risks Of New Ultra-Long-Haul Routes

Since the Open Skies agreement came into effect, the US–Australia market has changed considerably. However, nonstop services between the two countries remain relatively limited compared with the extensive networks connecting the US with Europe and major Asian markets.

United has been a major player in the market for decades, but its Australian network has not remained unchanged. Like other airlines, it has adjusted frequencies and withdrawn services when routes have not performed as expected. Its short-lived Los Angeles–Brisbane service is one example.

The airline launched the route on November 29, 2023, with three weekly flights on the 257-seat Boeing 787-9. Within less than a year, it removed the service. Regarding the San Francisco–Adelaide route, the carrier has not withdrawn the service, but it has significantly shortened the upcoming season.

Launching a new ultra-long-haul route involves considerable risk, particularly when airlines commit expensive widebody aircraft to a market without an established nonstop connection. Whether United’s shorter Adelaide season will prove more sustainable remains to be seen. For now, the route continues to offer South Australia a direct connection to the US.