$527 Cheap Flights from Portland (PDX) to Cairns (CNS)

View $527 flight on Mon, Dec 1, 2025Opens in a new window

Popular airlines from Portland International Airport (PDX) to Cairns Intl. Airport (CNS)

Cheap Flights from Portland to Cairns (PDX-CNS)

Prices were available within the past 7 days and start at $527 for one-way flights and $1,117 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Qantas Airways
Mon, Dec 1 - Wed, Dec 17
PDX
Portland
CNS
Cairns
$1,117 Roundtrip, found 1 day ago
$1,117
Roundtrip
found 1 day ago
Select Qantas Airways flight, departing Mon, Dec 1 from Portland to Cairns, returning Wed, Dec 17, priced at $1,117 found 1 day ago
Qantas Airways
Mon, Dec 1 - Sun, Dec 21
PDX
Portland
CNS
Cairns
$1,148 Roundtrip, found 1 day ago
$1,148
Roundtrip
found 1 day ago
Select Qantas Airways flight, departing Mon, Dec 1 from Portland to Cairns, returning Sun, Dec 21, priced at $1,148 found 1 day ago
Qantas Airways
Mon, Dec 1 - Thu, Dec 4
PDX
Portland
CNS
Cairns
$1,172 Roundtrip, found 1 day ago
$1,172
Roundtrip
found 1 day ago
Select Qantas Airways flight, departing Mon, Dec 1 from Portland to Cairns, returning Thu, Dec 4, priced at $1,172 found 1 day ago
Qantas Airways
Mon, Dec 1 - Thu, Dec 11
PDX
Portland
CNS
Cairns
$1,178 Roundtrip, found 1 day ago
$1,178
Roundtrip
found 1 day ago
Select Qantas Airways flight, departing Mon, Dec 1 from Portland to Cairns, returning Thu, Dec 11, priced at $1,178 found 1 day ago
Qantas Airways
Sun, Jan 18 - Sun, Feb 1
PDX
Portland
CNS
Cairns
$1,182 Roundtrip, found 3 days ago
$1,182
Roundtrip
found 3 days ago
Select Qantas Airways flight, departing Sun, Jan 18 from Portland to Cairns, returning Sun, Feb 1, priced at $1,182 found 3 days ago
Alaska Airlines
Tue, Dec 2 - Sat, Dec 6
PDX
Portland
CNS
Cairns
$1,196 Roundtrip, found 1 day ago
$1,196
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Tue, Dec 2 from Portland to Cairns, returning Sat, Dec 6, priced at $1,196 found 1 day ago
Alaska Airlines
Tue, May 26 - Thu, Jun 11
PDX
Portland
CNS
Cairns
$1,204 Roundtrip, found 2 days ago
$1,204
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Tue, May 26 from Portland to Cairns, returning Thu, Jun 11, priced at $1,204 found 2 days ago
Air Canada
Tue, Jun 16 - Tue, Jun 30
PDX
Portland
CNS
Cairns
$1,241 Roundtrip, just found
$1,241
Roundtrip
just found
Select Air Canada flight, departing Tue, Jun 16 from Portland to Cairns, returning Tue, Jun 30, priced at $1,241 just found
American Airlines
Fri, Mar 6 - Fri, Mar 13
PDX
Portland
CNS
Cairns
$1,253 Roundtrip, found 15 hours ago
$1,253
Roundtrip
found 15 hours ago
Select American Airlines flight, departing Fri, Mar 6 from Portland to Cairns, returning Fri, Mar 13, priced at $1,253 found 15 hours ago
Cathay Pacific
Wed, Dec 24 - Tue, Jan 13
PDX
Portland
CNS
Cairns
$1,517 Roundtrip, found 4 days ago
$1,517
Roundtrip
found 4 days ago
Select Cathay Pacific flight, departing Wed, Dec 24 from Portland to Cairns, returning Tue, Jan 13, priced at $1,517 found 4 days ago

Alternative airports near Cairns

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

Select flight to Cairns Intl. CNS. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $1,322
CNS
Cairns Intl.
CheapestClosest
Average driving time to city center8 min
Flights from $1,322

Frequently asked questions

How much does a flight from Portland Intl. Airport (PDX) to Cairns Intl. Airport (CNS) cost?
Lock in a cheap one-way flight from $527 or cheap return flight from $1,117 from Portland Intl. Airport (PDX) to Cairns Intl. Airport (CNS) 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 Cairns Intl. Airport (CNS)?
The cheapest month to fly from PDX to CNS is December, when there's less demand. Off-peak season is usually when airlines offer better prices between these airports.
What is the cheapest airline that flies from Portland Intl. Airport (PDX) to Cairns Intl. Airport (CNS)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest PDX to CNS flight.
How many flights per day from Portland Intl. Airport (PDX) to Cairns Intl. Airport (CNS)?
Direct flights from Portland Intl. Airport (PDX) to Cairns Intl. Airport (CNS) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel details and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from PDX to CNS?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during public holidays or peak travel times.*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 Cairns Intl. Airport (CNS)?
To touch down at Cairns Intl. Airport (CNS) on schedule, book a flight that leaves from Portland Intl. Airport (PDX) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**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 Cairns Intl. Airport (CNS) last-minute?
Holding off until just before your departure to book a flight from PDX to CNS often results in higher prices. Although you may find some last-minute deals, they're not always guaranteed. Keep your travel schedule open for the best chance of getting a bargain.
Is it cheaper to book a PDX to CNS flight and hotel package?
Compared with arranging flights and hotels separately, booking a PDX to CNS flight and hotel package with Expedia could result in significant savings. What's more, having it all in one place will take the stress out of travel planning. Just pick your flights and select from our extensive range of hotels, then personalize your trip with extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Portland Intl. Airport (PDX) to Cairns Intl. Airport (CNS)?
If you reserved your PDX to CNS flight in the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the ticket type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal if you want more information.

Travel information

Origin airport
Portland Intl.
Destination airport
Cairns Intl.
Airlines serving
Air Canada, Qantas Airways, United
Roundtrip price
$1,117
Distance
7123 mi

Book with confidence

Portland to Cairns Flights

The cheapest times to fly from Portland to Cairns

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

 

The best time to book a flight from Portland to Cairns

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

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 Cairns in 2025. You can also book with separate airlines for your outbound and return journeys, from $527 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 Cairns 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 Cairns 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 Cairns Flights

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*Available to One Key members.