$647 Cheap Flights from Portland (PDX) to Adelaide (ADL)

View $647 flight on Mon, Feb 23, 2026Opens in a new window

Popular airlines from Portland International Airport (PDX) to Adelaide, SA Airport (ADL)

Cheap Flights from Portland to Adelaide (PDX-ADL)

Prices were available within the past 7 days and start at $647 for one-way flights and $1,036 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Fri, Feb 13 - Fri, Feb 20
PDX
Portland
ADL
Adelaide
$1,036 Roundtrip, found 6 days ago
$1,036
Roundtrip
found 6 days ago
Select Air Canada flight, departing Fri, Feb 13 from Portland to Adelaide, returning Fri, Feb 20, priced at $1,036 found 6 days ago
Air Canada
Fri, Feb 13 - Fri, Feb 20
PDX
Portland
ADL
Adelaide
$1,037 Roundtrip, found 6 days ago
$1,037
Roundtrip
found 6 days ago
Select Air Canada flight, departing Fri, Feb 13 from Portland to Adelaide, returning Fri, Feb 20, priced at $1,037 found 6 days ago
Air Canada
Fri, Feb 13 - Fri, Feb 20
PDX
Portland
ADL
Adelaide
$1,038 Roundtrip, found 6 days ago
$1,038
Roundtrip
found 6 days ago
Select Air Canada flight, departing Fri, Feb 13 from Portland to Adelaide, returning Fri, Feb 20, priced at $1,038 found 6 days ago
Air Canada
Fri, Feb 13 - Fri, Feb 20
PDX
Portland
ADL
Adelaide
$1,040 Roundtrip, found 6 days ago
$1,040
Roundtrip
found 6 days ago
Select Air Canada flight, departing Fri, Feb 13 from Portland to Adelaide, returning Fri, Feb 20, priced at $1,040 found 6 days ago
Air Canada
Fri, Feb 13 - Fri, Feb 20
PDX
Portland
ADL
Adelaide
$1,041 Roundtrip, found 6 days ago
$1,041
Roundtrip
found 6 days ago
Select Air Canada flight, departing Fri, Feb 13 from Portland to Adelaide, returning Fri, Feb 20, priced at $1,041 found 6 days ago
Air Canada
Fri, Feb 13 - Fri, Feb 20
PDX
Portland
ADL
Adelaide
$1,042 Roundtrip, found 6 days ago
$1,042
Roundtrip
found 6 days ago
Select Air Canada flight, departing Fri, Feb 13 from Portland to Adelaide, returning Fri, Feb 20, priced at $1,042 found 6 days ago
Qantas Airways
Thu, Dec 25 - Fri, Jan 9
PDX
Portland
ADL
Adelaide
$1,209 Roundtrip, found 5 days ago
$1,209
Roundtrip
found 5 days ago
Select Qantas Airways flight, departing Thu, Dec 25 from Portland to Adelaide, returning Fri, Jan 9, priced at $1,209 found 5 days ago
United
Mon, Mar 2 - Sat, Mar 28
PDX
Portland
ADL
Adelaide
$1,211 Roundtrip, found 1 day ago
$1,211
Roundtrip
found 1 day ago
Select United flight, departing Mon, Mar 2 from Portland to Adelaide, returning Sat, Mar 28, priced at $1,211 found 1 day ago
Hawaiian Airlines
Thu, Nov 20 - Thu, Dec 4
PDX
Portland
ADL
Adelaide
$1,460 Roundtrip, found 18 hours ago
$1,460
Roundtrip
found 18 hours ago
Select Hawaiian Airlines flight, departing Thu, Nov 20 from Portland to Adelaide, returning Thu, Dec 4, priced at $1,460 found 18 hours ago
Cathay Pacific
Fri, Mar 6 - Fri, Mar 13
PDX
Portland
ADL
Adelaide
$1,536 Roundtrip, found 13 hours ago
$1,536
Roundtrip
found 13 hours ago
Select Cathay Pacific flight, departing Fri, Mar 6 from Portland to Adelaide, returning Fri, Mar 13, priced at $1,536 found 13 hours ago

Alternative airports near Adelaide

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Adelaide, SA Airport ADL. Cheapest and Closest option available. Average driving time to city center is 11 minutes. Flights from $1,843
ADL
Adelaide, SA Airport
CheapestClosest
Average driving time to city center11 min
Flights from $1,843

Frequently asked questions

How much does a flight from Portland Intl. Airport (PDX) to Adelaide Airport (ADL) cost?
Secure a cheap one-way flight from $647 or cheap return flight from $1,036 from Portland Intl. Airport (PDX) to Adelaide Airport (ADL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Portland Intl. Airport (PDX) to Adelaide Airport (ADL)?
Planning your trip for February can help you save, as it's the cheapest month for flights between PDX and ADL. You'll typically find the lowest prices during the off-season.
What is the cheapest airline that flies from Portland Intl. Airport (PDX) to Adelaide Airport (ADL)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest PDX to ADL flight.
How many flights per day from Portland Intl. Airport (PDX) to Adelaide Airport (ADL)?
There aren't any daily direct flights from Portland Intl. Airport (PDX) to Adelaide Airport (ADL). But you can opt for flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be soaring above the clouds in no time at all.
What day of the week has the most flights from PDX to ADL?
You'll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Portland Intl. Airport (PDX) to Adelaide Airport (ADL)?
To avoid possible delays on the Portland Intl. Airport (PDX) to Adelaide Airport (ADL) route, aim to travel before 3 PM. Departures after this hour are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Portland Intl. Airport (PDX) to Adelaide Airport (ADL) last-minute?
Last-minute fares from PDX to ADL are typically more expensive. To secure the best rates, start looking for flights well ahead of time. That said, if you're flexible with your travel plans, you may score a cheap ticket right before your journey.
Is it cheaper to book a PDX to ADL flight and hotel package?
You'll generally save money by booking a PDX to ADL flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. After choosing your ideal flights and accommodations, consider other add-ons like tours, car rentals and activities.
Can I cancel or change the date of my flight from Portland Intl. Airport (PDX) to Adelaide Airport (ADL)?
Usually, it's possible to cancel or reschedule your PDX to ADL flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Origin airport
Portland Intl.
Destination airport
Adelaide
Airlines serving
Air Canada, Air New Zealand, Alaska Airlines, American Airlines, Cathay Pacific, Hawaiian Airlines, Qantas Airways, Qatar Airways, United
Roundtrip price
$1,035
Distance
8280 mi

Book with confidence

Portland to Adelaide Flights

The cheapest times to fly from Portland to Adelaide

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Portland to Adelaide are during the month of February. You can find some of the cheapest flights from Portland to Adelaide with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Portland to Adelaide

Sunday is one of the best days to book for cheap flights from Portland to Adelaide: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Portland to Adelaide

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Portland to Adelaide in 2025. You can also book with separate airlines for your outbound and return journeys, from $647 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Portland to Adelaide flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Portland to Adelaide airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Portland to Adelaide Flights

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*Available to One Key members.