$525 Cheap Flights from Portland (PDX) to Sydney (YQY)

View $525 flight on Sat, Nov 15, 2025Opens in a new window

Popular airlines from Portland International Airport (PDX) to Sydney, NS (YQY)

Cheap Flights from Portland to Sydney (PDX-YQY)

Prices were available within the past 7 days and start at $525 for one-way flights and $844 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Wed, Jan 7 - Wed, Jan 14
PDX
Portland
YQY
Sydney
$844 Roundtrip, found 6 days ago
$844
Roundtrip
found 6 days ago
Select Air Canada flight, departing Wed, Jan 7 from Portland to Sydney, returning Wed, Jan 14, priced at $844 found 6 days ago
Air Canada
Wed, Jan 7 - Sat, Jan 17
PDX
Portland
YQY
Sydney
$847 Roundtrip, found 6 days ago
$847
Roundtrip
found 6 days ago
Select Air Canada flight, departing Wed, Jan 7 from Portland to Sydney, returning Sat, Jan 17, priced at $847 found 6 days ago
Air Canada
Wed, Jan 7 - Thu, Jan 15
PDX
Portland
YQY
Sydney
$849 Roundtrip, found 6 days ago
$849
Roundtrip
found 6 days ago
Select Air Canada flight, departing Wed, Jan 7 from Portland to Sydney, returning Thu, Jan 15, priced at $849 found 6 days ago
Air Canada
Sat, Jan 10 - Wed, Jan 14
PDX
Portland
YQY
Sydney
$853 Roundtrip, found 6 days ago
$853
Roundtrip
found 6 days ago
Select Air Canada flight, departing Sat, Jan 10 from Portland to Sydney, returning Wed, Jan 14, priced at $853 found 6 days ago
Air Canada
Sat, Jan 10 - Sat, Jan 17
PDX
Portland
YQY
Sydney
$856 Roundtrip, found 6 days ago
$856
Roundtrip
found 6 days ago
Select Air Canada flight, departing Sat, Jan 10 from Portland to Sydney, returning Sat, Jan 17, priced at $856 found 6 days ago
Air Canada
Sat, Jan 10 - Thu, Jan 15
PDX
Portland
YQY
Sydney
$858 Roundtrip, found 6 days ago
$858
Roundtrip
found 6 days ago
Select Air Canada flight, departing Sat, Jan 10 from Portland to Sydney, returning Thu, Jan 15, priced at $858 found 6 days ago
Air Canada
Wed, Jan 7 - Fri, Jan 16
PDX
Portland
YQY
Sydney
$870 Roundtrip, found 6 days ago
$870
Roundtrip
found 6 days ago
Select Air Canada flight, departing Wed, Jan 7 from Portland to Sydney, returning Fri, Jan 16, priced at $870 found 6 days ago
Air Canada
Thu, Jan 8 - Wed, Jan 14
PDX
Portland
YQY
Sydney
$872 Roundtrip, found 6 days ago
$872
Roundtrip
found 6 days ago
Select Air Canada flight, departing Thu, Jan 8 from Portland to Sydney, returning Wed, Jan 14, priced at $872 found 6 days ago
Air Canada
Thu, Jan 8 - Sat, Jan 17
PDX
Portland
YQY
Sydney
$875 Roundtrip, found 6 days ago
$875
Roundtrip
found 6 days ago
Select Air Canada flight, departing Thu, Jan 8 from Portland to Sydney, returning Sat, Jan 17, priced at $875 found 6 days ago
Air Canada
Thu, Jan 8 - Thu, Jan 15
PDX
Portland
YQY
Sydney
$877 Roundtrip, found 6 days ago
$877
Roundtrip
found 6 days ago
Select Air Canada flight, departing Thu, Jan 8 from Portland to Sydney, returning Thu, Jan 15, priced at $877 found 6 days ago

Frequently asked questions

How much does a flight from Portland Intl. Airport (PDX) to Sydney Airport (YQY) cost?
Snag a cheap one-way flight from $525 or cheap return flight from $844 from Portland Intl. Airport (PDX) to Sydney Airport (YQY) 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 Sydney Airport (YQY)?
The cheapest month to fly from PDX to YQY is January, when there's less demand. Off-peak months are generally when airlines offer lower prices between these airports.
What is the cheapest airline that flies from Portland Intl. Airport (PDX) to Sydney Airport (YQY)?
To find the cheapest airline that'll fly you from PDX to YQY, use Expedia's filter tool. Customize your search based on your travel needs, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Portland Intl. Airport (PDX) to Sydney Airport (YQY)?
Direct flights from Portland Intl. Airport (PDX) to Sydney Airport (YQY) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel details and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from PDX to YQY?
Typically you'll find the greatest selection of flight options on a Friday. Tuesdays tend to be the quietest.* But this can change based on the airline, season and other factors.*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 Sydney Airport (YQY)?
Book a flight from Portland Intl. Airport (PDX) to Sydney Airport (YQY) that takes off before 3 PM to reduce the risk of cancellations and delays. Departures later than this are on average 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 Sydney Airport (YQY) last-minute?
Booking your flight from PDX to YQY right before your trip is typically more expensive. But if there's some wiggle room with your travel times and dates, you could grab a cheap last-minute fare.
Is it cheaper to book a PDX to YQY flight and hotel package?
Compared with arranging flights and hotels separately, booking a PDX to YQY flight and hotel package with Expedia could result in significant savings. Better yet, having it all in one place takes the hassle out of travel planning. Simply pick your flights and select from our extensive range of hotels, then personalize your trip with extras like car rentals and activities.
Can I cancel or change the date of my flight from Portland Intl. Airport (PDX) to Sydney Airport (YQY)?
Typically, it's possible to cancel or reschedule your PDX to YQY flight. However, for bookings made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Origin airport
Portland Intl.
Destination airport
Sydney
Roundtrip price
$844
Distance
2927 mi

Book with confidence

Portland to Sydney Flights

The cheapest times to fly from Portland to Sydney

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 Sydney are during the month of January. You can find some of the cheapest flights from Portland to Sydney with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Portland to Sydney

Sunday is one of the best days to book for cheap flights from Portland to Sydney: 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 Sydney

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 Sydney in 2025. You can also book with separate airlines for your outbound and return journeys, from $525 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 Sydney 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 Sydney 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 Sydney Flights

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*Available to One Key members.