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

View AU$1,004 flight on Mon, 24 Aug 2026Opens in a new window

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

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

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Sun, 20 Sept - Sun, 27 Sept
PDX
Portland
ADL
Adelaide
AU$1,556 Return, found 5 days ago
AU$1,556
Return
found 5 days ago
Select Air Canada flight, departing Sun, 20 Sept from Portland to Adelaide, returning Sun, 27 Sept, priced at AU$1,556 found 5 days ago
Air Canada
Sun, 25 Oct - Sun, 1 Nov
PDX
Portland
ADL
Adelaide
AU$1,599 Return, found 1 hour ago
AU$1,599
Return
found 1 hour ago
Select Air Canada flight, departing Sun, 25 Oct from Portland to Adelaide, returning Sun, 1 Nov, priced at AU$1,599 found 1 hour ago
Air Canada
Sun, 25 Oct - Sun, 1 Nov
PDX
Portland
ADL
Adelaide
AU$1,606 Return, found 1 hour ago
AU$1,606
Return
found 1 hour ago
Select Air Canada flight, departing Sun, 25 Oct from Portland to Adelaide, returning Sun, 1 Nov, priced at AU$1,606 found 1 hour ago
Air Canada
Sun, 16 Aug - Sun, 23 Aug
PDX
Portland
ADL
Adelaide
AU$1,608 Return, found 17 hours ago
AU$1,608
Return
found 17 hours ago
Select Air Canada flight, departing Sun, 16 Aug from Portland to Adelaide, returning Sun, 23 Aug, priced at AU$1,608 found 17 hours ago
Air Canada
Sun, 16 Aug - Sun, 23 Aug
PDX
Portland
ADL
Adelaide
AU$1,610 Return, found 17 hours ago
AU$1,610
Return
found 17 hours ago
Select Air Canada flight, departing Sun, 16 Aug from Portland to Adelaide, returning Sun, 23 Aug, priced at AU$1,610 found 17 hours ago
Air Canada
Sun, 18 Oct - Sun, 25 Oct
PDX
Portland
ADL
Adelaide
AU$1,644 Return, found 6 days ago
AU$1,644
Return
found 6 days ago
Select Air Canada flight, departing Sun, 18 Oct from Portland to Adelaide, returning Sun, 25 Oct, priced at AU$1,644 found 6 days ago
United
Sun, 25 Oct - Sun, 1 Nov
PDX
Portland
ADL
Adelaide
AU$1,710 Return, found 1 hour ago
AU$1,710
Return
found 1 hour ago
Select United flight, departing Sun, 25 Oct from Portland to Adelaide, returning Sun, 1 Nov, priced at AU$1,710 found 1 hour ago
Qantas Airways
Sun, 25 Oct - Sun, 1 Nov
PDX
Portland
ADL
Adelaide
AU$1,729 Return, found 1 hour ago
AU$1,729
Return
found 1 hour ago
Select Qantas Airways flight, departing Sun, 25 Oct from Portland to Adelaide, returning Sun, 1 Nov, priced at AU$1,729 found 1 hour ago
American Airlines
Sun, 25 Oct - Sun, 1 Nov
PDX
Portland
ADL
Adelaide
AU$1,837 Return, found 1 hour ago
AU$1,837
Return
found 1 hour ago
Select American Airlines flight, departing Sun, 25 Oct from Portland to Adelaide, returning Sun, 1 Nov, priced at AU$1,837 found 1 hour ago
Alaska Airlines
Mon, 7 June - Fri, 11 June
PDX
Portland
ADL
Adelaide
AU$1,877 Return, found 5 days ago
AU$1,877
Return
found 5 days ago
Select Alaska Airlines flight, departing Mon, 7 June from Portland to Adelaide, returning Fri, 11 June, priced at AU$1,877 found 5 days ago

Frequently asked questions

How much does a flight from Portland, OR (PDX-Portland Intl.) to Adelaide, SA (ADL) cost?
You can find one-way and return flights from PDX to ADL with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when PDX to ADL ticket fares go up or down.
What is the cheapest month to fly from Portland, OR (PDX-Portland Intl.) to Adelaide, SA (ADL)?
The cheapest months to fly from PDX to ADL are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Portland, OR (PDX-Portland Intl.) to Adelaide, SA (ADL)?
Enter PDX to ADL and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Portland, OR (PDX-Portland Intl.) to Adelaide, SA (ADL)?
Delta is one of the cheapest airlines offering connecting return flights from Portland, OR (PDX-Portland Intl.) to Adelaide, SA (ADL) with a layover in Los Angeles Intl. (LAX), with tickets starting from around AU$2763 for flights that can be booked for departure within the next year. These prices are per adult, for economy/coach class. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.
How do I find cheap flights from Portland, OR (PDX-Portland Intl.) to Adelaide, SA (ADL)?
To find a cheap flight from Portland, OR (PDX-Portland Intl.) to Adelaide, SA (ADL), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Portland, OR (PDX-Portland Intl.) to Adelaide, SA (ADL)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Portland, OR (PDX-Portland Intl.) to Adelaide, SA (ADL)?
There are approximately 9 connecting flights per day from Portland, OR (PDX-Portland Intl.) to Adelaide, SA (ADL). Some common connection points include Los Angeles Intl. (LAX), San Francisco Intl. (SFO), and Vancouver Intl. (YVR).
What is the earliest flight from Portland, OR (PDX-Portland Intl.) to Adelaide, SA (ADL)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from PDX to ADL. To compare more early flights, use the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Portland, OR (PDX-Portland Intl.) to Adelaide, SA (ADL)?
You'll find the most flights from Portland, OR (PDX-Portland Intl.) to Adelaide, SA (ADL) on a Thursday, with around 28 flights available. This gives you a good selection of options for your travel plans. Major airlines on this route include Alaska Airlines, United, and American Airlines. Flight schedules are consistent throughout the week, so you'll generally find similar options on other days too.
What are the most popular departure times for flights from Portland, OR (PDX-Portland Intl.) to Adelaide, SA (ADL)?
The most popular departure times for flights from Portland, OR (PDX-Portland Intl.) to Adelaide, SA (ADL) are between 12pm and 3pm. Many major carriers, including Alaska Airlines, Delta and American Airlines, offer flights during this window. Many travellers prefer this time as it allows for a full morning before heading to the airport, and you'll arrive at your destination at a reasonable hour.
How long does it take to fly from Portland, OR (PDX-Portland Intl.) to Adelaide, SA (ADL)?
There are no nonstop flights from Portland, OR (PDX-Portland Intl.) to Adelaide, SA (ADL). The distance between these two cities is approximately 13,327 kilometres. Flights with one stop typically take around 23 hours 18 minutes. If you opt for flights with two or more stops, your travel time will be a bit longer, averaging around 23 hours 30 minutes. Keep in mind that these are average travel times and can vary based on factors like layover duration, routing, and weather conditions.
Can you fly business or first class from Portland, OR (PDX-Portland Intl.) to Adelaide, SA (ADL)?
You can fly business class between PDX and ADL. You can fly business class with Alaska Airlines and American Airlines.
How do I earn miles on a Portland, OR (PDX-Portland Intl.) to Adelaide, SA (ADL) flight with Expedia?
It's easy to earn miles on a Portland, OR (PDX-Portland Intl.) to Adelaide, SA (ADL) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
Is it cheaper to buy a plane ticket from Portland, OR (PDX-Portland Intl.) to Adelaide, SA (ADL) at the last minute?
Typically, booking a last minute flight from Portland, OR (PDX-Portland Intl.) to Adelaide, SA (ADL) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Portland, OR (PDX-Portland Intl.) to Adelaide, SA (ADL) flight and hotel package?
Securing a Portland, OR (PDX-Portland Intl.) to Adelaide, SA (ADL) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Portland, OR (PDX-Portland Intl.) to Adelaide, SA (ADL)?
If you booked your Portland, OR (PDX-Portland Intl.) to Adelaide, SA (ADL) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Portland Intl.
Destination airport
Adelaide
Airlines serving
Air Canada, Alaska Airlines, American Airlines, Qantas Airways, Qatar Airways, United
Return price
AU$1,556
Distance
13248 km

Book with confidence

Your quick guide to flights from Portland to Adelaide

Pick up great flights from Portland to Adelaide

With Expedia, you have your pick of flights a day with 20 airlines covering flights from Portland to Adelaide. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from Portland to Adelaide that take around hours.

Find cheap flights from Portland to Adelaide

From the great flight deals with prices currently ranging from AU$1,556 to AU$1,877, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from Portland to Adelaide around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to Adelaide is normally in September.

Reasons to book your flight from Portland to Adelaide with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from Portland to Adelaide across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to Adelaide right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Your quick guide to flights from Portland to Adelaide

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