United Airlines Will Fly To Adelaide, Bangkok, Ho Chi Minh City

In early April 2025, United Airlines announced that it would launch some cool new international routes. I want to provide an update, as all three of these flights are now on sale, including the two intra-Asia fifth freedom flights.

United boosts Pacific network with three new routes

United will be launching flights to two new destinations in Asia and one new destination in Australia. Specifically, the Star Alliance carrier will fly to Adelaide, Bangkok, and Ho Chi Minh City.

All three of these routes will be operated by Boeing 787-9s, featuring a total of 257 seats. This includes 48 Polaris seats (business class), 21 Premium Plus seats (premium economy), 39 Economy Plus seats (extra legroom economy), and 149 economy class seats. Let’s cover all the details, as all three of these flights are now on sale.

United will fly from San Francisco to Adelaide

As of December 11, 2025, United will add 3x weekly flights between San Francisco (SFO) and Adelaide (ADL), on a seasonal basis. The new 8,070-mile flight will operate with the following schedule:

UA207 San Francisco to Adelaide departing 11:05PM arriving 9:30AM (+2 days)
UA208 Adelaide to San Francisco departing 2:55PM arriving 11:15AM

The westbound flight is blocked at 15hr50min and will operate on Mondays, Thursdays, and Saturdays, while the eastbound flight is blocked at 14hr50min and will operate on Mondays, Wednesdays, and Saturdays.

This will be United’s fourth destination in Australia, after Sydney (SYD), Melbourne (MEL), and Brisbane (BNE). This will be United’s second longest route to Australia, after the carrier’s Houston (IAH) to Sydney route, which covers a distance of 8,596 miles. United will also be the only airline flying between Adelaide and North America.

United will fly from Hong Kong to Bangkok

As of October 26, 2025, United will add daily flights between Hong Kong (HKG) and Bangkok (BKK). The 1,049-mile flight will operate with the following schedule:

UA822 Hong Kong to Bangkok departing 9:00AM arriving 10:50AM
UA821 Bangkok to Hong Kong departing 4:40PM arriving 8:45PM

The southbound flight is blocked at 2hr50min, while the northbound flight is blocked at 3hr5min. As you can see, this isn’t a nonstop route from the United States, but instead, this will allow one-stop service from Los Angeles or San Francisco to Bangkok. This route will be operated as a continuation of the following transpacific frequency:

UA822 Los Angeles to Hong Kong departing 11:55PM arriving 7:00AM (+2 days)
UA821 Hong Kong to Los Angeles departing 10:45PM arriving 8:25PM

United last served Bangkok out of Tokyo Narita (NRT), and that route was cut in 2014.

United will fly from Hong Kong to Ho Chi Minh City

As of October 26, 2025, United will add daily flights between Hong Kong (HKG) and Ho Chi Minh City (SGN). The 925-mile flight will operate with the following schedule:

UA152 Hong Kong to Ho Chi Minh City departing 9:15PM arriving 10:55PM
UA153 Ho Chi Minh City to Hong Kong departing 6:00AM arriving 9:35AM

The southbound flight is blocked at 2hr40min, while the northbound flight is blocked at 2hr35min. Much like the Bangkok service, this isn’t a nonstop route from the United States, but instead, this will allow one-stop service from Los Angeles or San Francisco to Bangkok. This route will be operated as a continuation of the following transpacific frequency:

UA152 Los Angeles to Hong Kong departing 12:10PM arriving 7:15PM (+1 day)
UA153 Hong Kong to Los Angeles departing 11:25AM arriving 9:05AM

United served this exact route several years back, though it was cut in 2016.

My take on United’s Pacific expansion

What a cool expansion. A few thoughts…

First of all, the Adelaide route is a bit surprising. Obviously United needs more places to send its wide body aircraft in winter, to balance the summer seasonal flights to Europe. United has tried to expand rapidly in the South Pacific, with mixed success. So it’s interesting to see the airline now targeting a new destination, which hasn’t ever seen nonstop service to the United States. I have to imagine that there are some significant local incentives in place?

Regarding Bangkok and Ho Chi Minh City, those are both destinations that have been rumored for United, though I guess we got a “light” version of these routes, given that they operate via Hong Kong. Having some access to Thailand and Vietnam with a US carrier is cool, though admittedly this doesn’t do much to simplify travel compared to a countless number of other one-stop options that are available.

As an aviation geek, I love the concept of these fifth freedom flights. The only thing that’s surprising, perhaps, is that these flights aren’t out of Tokyo, where United is continuing to build up a larger presence, including for intra-Asia flights. United also has a lot more transpacific capacity there. Then again, it’s a much shorter journey from Hong Kong to these destinations.

These new Bangkok and Ho Chi Minh City flights will likely be the longest rotations for United crews. I’m actually struggling to figure out how the airline will staff these efficiently, especially since United no longer has Hong Kong based flight attendants. In particular, I imagine that in Ho Chi Minh City, crews will need to have a layover of two nights. Interesting logistics.

Bottom line

United has announced a Pacific expansion, whereby we’ll see the airline fly from San Francisco to Adelaide, as well as from Hong Kong to both Bangkok and Ho Chi Minh City. Adelaide will be United’s fourth destination in Australia, while United will be the only US carrier to fly to Thailand and Vietnam.

It’s fun to see this expansion, and I’m curious to see how it works out. While fifth freedom flights might not necessarily be the most efficient, they sure are cool! All of these flights are now on sale, should you be interested in booking one of them.

What do you make of United’s Pacific expansion?