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Cheap Flights from Portland (PDX) to Sydney (SYD)

View AU$827 flight on Mon, 31 Aug 2026Opens in a new window

Popular airlines from Portland International Airport (PDX) to Sydney Airport (SYD)

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Cheap Flights from Portland (PDX) to Sydney (SYD)

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.

Alaska Airlines
Mon, 3 Aug - Sun, 16 Aug
PDX
Portland
SYD
Sydney
AU$1,582 Return, found 22 hours ago
AU$1,582
Return
found 22 hours ago
Select Alaska Airlines flight, departing Mon, 3 Aug from Portland to Sydney, returning Sun, 16 Aug, priced at AU$1,582 found 22 hours ago
Alaska Airlines
Mon, 3 Aug - Sun, 16 Aug
PDX
Portland
SYD
Sydney
AU$1,620 Return, found 22 hours ago
AU$1,620
Return
found 22 hours ago
Select Alaska Airlines flight, departing Mon, 3 Aug from Portland to Sydney, returning Sun, 16 Aug, priced at AU$1,620 found 22 hours ago
Alaska Airlines
Wed, 30 Dec - Thu, 14 Jan
PDX
Portland
SYD
Sydney
AU$1,655 Return, found 2 days ago
AU$1,655
Return
found 2 days ago
Select Alaska Airlines flight, departing Wed, 30 Dec from Portland to Sydney, returning Thu, 14 Jan, priced at AU$1,655 found 2 days ago
Alaska Airlines
Sat, 7 Nov - Sun, 22 Nov
PDX
Portland
SYD
Sydney
AU$1,659 Return, found 5 days ago
AU$1,659
Return
found 5 days ago
Select Alaska Airlines flight, departing Sat, 7 Nov from Portland to Sydney, returning Sun, 22 Nov, priced at AU$1,659 found 5 days ago
Alaska Airlines
Fri, 24 July - Sun, 30 Aug
PDX
Portland
SYD
Sydney
AU$1,667 Return, found 7 hours ago
AU$1,667
Return
found 7 hours ago
Select Alaska Airlines flight, departing Fri, 24 July from Portland to Sydney, returning Sun, 30 Aug, priced at AU$1,667 found 7 hours ago
American Airlines
Mon, 10 Aug - Sun, 23 Aug
PDX
Portland
SYD
Sydney
AU$1,703 Return, found 5 days ago
AU$1,703
Return
found 5 days ago
Select American Airlines flight, departing Mon, 10 Aug from Portland to Sydney, returning Sun, 23 Aug, priced at AU$1,703 found 5 days ago
United
Mon, 3 Aug - Sun, 16 Aug
PDX
Portland
SYD
Sydney
AU$1,704 Return, found 22 hours ago
AU$1,704
Return
found 22 hours ago
Select United flight, departing Mon, 3 Aug from Portland to Sydney, returning Sun, 16 Aug, priced at AU$1,704 found 22 hours ago
Delta
Mon, 3 Aug - Sun, 16 Aug
PDX
Portland
SYD
Sydney
AU$1,704 Return, found 22 hours ago
AU$1,704
Return
found 22 hours ago
Select Delta flight, departing Mon, 3 Aug from Portland to Sydney, returning Sun, 16 Aug, priced at AU$1,704 found 22 hours ago
Alaska Airlines
Mon, 10 Aug - Sun, 23 Aug
PDX
Portland
SYD
Sydney
AU$1,723 Return, found 5 days ago
AU$1,723
Return
found 5 days ago
Select Alaska Airlines flight, departing Mon, 10 Aug from Portland to Sydney, returning Sun, 23 Aug, priced at AU$1,723 found 5 days ago
Air Canada
Mon, 26 Oct - Wed, 11 Nov
PDX
Portland
SYD
Sydney
AU$1,753 Return, found 7 hours ago
AU$1,753
Return
found 7 hours ago
Select Air Canada flight, departing Mon, 26 Oct from Portland to Sydney, returning Wed, 11 Nov, priced at AU$1,753 found 7 hours ago

Alternative airports near Sydney

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

Select flight to Kingsford Smith Intl. SYD. Cheapest option available. Average driving time to city centre is 16 minutes. Flights from AU$1,747
SYD
Kingsford Smith Intl.
Cheapest
Average driving time to city centre16 min
Flights from AU$1,747

Frequently asked questions

How much does a flight from Portland, OR (PDX-Portland Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) cost?
You can find cheap one-way flights from AU$827 and cheap return flights from AU$1,582 PDX to SYD with Expedia. Return flights often range between AU$1,640 and AU$6,395. 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 the cheapest fares first, and use the Price Tracking tool to receive alerts when PDX to SYD ticket fares go up or down.
What is the cheapest month to fly from Portland, OR (PDX-Portland Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
The cheapest months to fly from PDX to SYD 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 Sydney, NSW (SYD-Kingsford Smith Intl.)?
Enter PDX to SYD and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Portland, OR (PDX) to Sydney, NSW (SYD)?
To find a cheap flight from Portland, OR (PDX) to Sydney, NSW (SYD), 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 Sydney, NSW (SYD-Kingsford Smith Intl.)?
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 Sydney, NSW (SYD-Kingsford Smith Intl.)?
There are approximately 41 connecting flights per day from Portland Intl. (PDX) to Kingsford Smith Intl. (SYD). 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 Sydney, NSW (SYD-Kingsford Smith Intl.)?
The earliest flight from Portland, OR (PDX-Portland Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) typically departs around 12:55 AM. This service is offered by American Airlines and Qantas Airways. This is a seasonal service, active in June, July, August, and September. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select 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 Sydney, NSW (SYD-Kingsford Smith Intl.)?
You'll typically find the most flights from Portland, OR (PDX-Portland Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) on a Thursday, with around 46 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 options are notably more plentiful on Thursdays compared to other days of the week, offering you more flexibility.
What are the most popular departure times for flights from Portland, OR (PDX-Portland Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
The most popular departure times for flights from Portland, OR (PDX-Portland Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) are in the afternoon, from 3pm to 6pm. Many major carriers, including Delta, Alaska Airlines and United, offer flights during this window. Many travellers prefer these times as they allow you to have a full day before your flight and arrive in Sydney at a convenient time.
How long does it take to fly from Portland, OR (PDX-Portland Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
There are no nonstop flights from Portland, OR (PDX-Portland Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.). The journey covers a distance of approximately 12,360 kilometres. Flights with one stop typically take around 22 hours 48 minutes. If your flight has two or more stops, you can expect the travel time to be longer, usually around 24 hours 30 minutes. Keep in mind that these are average times, and your actual travel duration can vary depending on the specific route, layover times, and factors like wind patterns.
Can you fly business or first class from Portland, OR (PDX-Portland Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
Yes, you can fly business class or first class between PDX and SYD. Airlines that offer business class service on this route include:
  • Alaska Airlines
  • Delta
  • United
  • American Airlines
First class cabins are available on Alaska Airlines and American Airlines.
How do I earn miles on a Portland, OR (PDX-Portland Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) flight with Expedia?
It's easy to earn miles on a Portland, OR (PDX-Portland Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) 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.
What airports do you fly into for Sydney, NSW (SYD) from Portland, OR (PDX)?
If you're planning to travel to Sydney from Portland Intl. (PDX), you can fly directly into Kingsford Smith Intl. (SYD). Some flights may connect through major hubs like San Francisco Intl. (SFO), Vancouver Intl. (YVR), or Los Angeles Intl. (LAX) before reaching Sydney. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Portland, OR (PDX-Portland Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) at the last minute?
Typically, booking a last minute flight from Portland, OR (PDX-Portland Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) 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 Sydney, NSW (SYD-Kingsford Smith Intl.) flight and hotel package?
Securing a Portland, OR (PDX-Portland Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) 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) to Sydney, NSW (SYD)?
If you booked your Portland, OR (PDX) to Sydney, NSW (SYD) 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
Kingsford Smith Intl.
Airlines serving
Air Canada, Air New Zealand, Alaska Airlines, American Airlines, Cathay Pacific, Delta, Japan Airlines, Qantas Airways, United
Return price
AU$1,582
Distance
12286 km

Book with confidence

Your quick guide to flights from Portland to Sydney

Pick up great flights from Portland to Sydney

With Expedia, you have your pick of flights a day with 20 airlines covering flights from Portland to Sydney. 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 Sydney that take around hours.

Find cheap flights from Portland to Sydney

From the great flight deals with prices currently ranging from AU$1,582 to AU$1,753, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from Portland to Sydney 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 Sydney is normally in August.

Reasons to book your flight from Portland to Sydney 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 Sydney 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 Sydney 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 Sydney

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