$539 Cheap Flights from Seattle (SEA) to Cairns (CNS)

View $539 flight on Fri, Oct 31, 2025Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Cairns Intl. Airport (CNS)

Cheap Flights from Seattle to Cairns (SEA-CNS)

Prices were available within the past 7 days and start at $539 for one-way flights and $958 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Sun, Nov 2 - Sun, Nov 16
SEA
Seattle
CNS
Cairns
$958 Roundtrip, found 5 days ago
$958
Roundtrip
found 5 days ago
Select Air Canada flight, departing Sun, Nov 2 from Seattle to Cairns, returning Sun, Nov 16, priced at $958 found 5 days ago
Air Canada
Sun, Nov 2 - Sat, Nov 15
SEA
Seattle
CNS
Cairns
$962 Roundtrip, found 5 days ago
$962
Roundtrip
found 5 days ago
Select Air Canada flight, departing Sun, Nov 2 from Seattle to Cairns, returning Sat, Nov 15, priced at $962 found 5 days ago
Air Canada
Wed, Feb 25 - Sat, Mar 14
SEA
Seattle
CNS
Cairns
$967 Roundtrip, found 5 days ago
$967
Roundtrip
found 5 days ago
Select Air Canada flight, departing Wed, Feb 25 from Seattle to Cairns, returning Sat, Mar 14, priced at $967 found 5 days ago
Air Canada
Wed, Feb 25 - Sun, Mar 15
SEA
Seattle
CNS
Cairns
$979 Roundtrip, found 5 days ago
$979
Roundtrip
found 5 days ago
Select Air Canada flight, departing Wed, Feb 25 from Seattle to Cairns, returning Sun, Mar 15, priced at $979 found 5 days ago
Alaska Airlines
Thu, Oct 23 - Thu, Nov 6
SEA
Seattle
CNS
Cairns
$1,197 Roundtrip, found 2 days ago
$1,197
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Thu, Oct 23 from Seattle to Cairns, returning Thu, Nov 6, priced at $1,197 found 2 days ago
Alaska Airlines
Tue, Mar 31 - Thu, Apr 16
SEA
Seattle
CNS
Cairns
$1,197 Roundtrip, found 2 days ago
$1,197
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Tue, Mar 31 from Seattle to Cairns, returning Thu, Apr 16, priced at $1,197 found 2 days ago
Alaska Airlines
Wed, Nov 26 - Sat, Dec 6
SEA
Seattle
CNS
Cairns
$1,207 Roundtrip, found 2 days ago
$1,207
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Wed, Nov 26 from Seattle to Cairns, returning Sat, Dec 6, priced at $1,207 found 2 days ago
Cathay Pacific
Mon, Feb 2 - Tue, Feb 17
SEA
Seattle
CNS
Cairns
$1,297 Roundtrip, found 2 days ago
$1,297
Roundtrip
found 2 days ago
Select Cathay Pacific flight, departing Mon, Feb 2 from Seattle to Cairns, returning Tue, Feb 17, priced at $1,297 found 2 days ago
Hawaiian Airlines
Fri, May 29 - Tue, Jun 16
SEA
Seattle
CNS
Cairns
$1,464 Roundtrip, found 3 days ago
$1,464
Roundtrip
found 3 days ago
Select Hawaiian Airlines flight, departing Fri, May 29 from Seattle to Cairns, returning Tue, Jun 16, priced at $1,464 found 3 days ago
Singapore Airlines
Fri, Apr 3 - Mon, Apr 20
SEA
Seattle
CNS
Cairns
$1,586 Roundtrip, found 4 days ago
$1,586
Roundtrip
found 4 days ago
Select Singapore Airlines flight, departing Fri, Apr 3 from Seattle to Cairns, returning Mon, Apr 20, priced at $1,586 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 $1,747
CNS
Cairns Intl.
CheapestClosest
Average driving time to city center8 min
Flights from $1,747
Flights from Seattle (SEA) to Cairns (CNS)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Cairns Intl.
Airlines serving
Air Canada, Air New Zealand, All Nippon Airways, American Airlines, Fiji Airways, Japan Airlines, Qantas Airways, Qatar Airways, United
Roundtrip price
$957
Distance
7160 mi

Seattle to Cairns Flights

The cheapest times to fly from Seattle 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 Seattle to Cairns are during the month of November. You can find some of the cheapest flights from Seattle to Cairns with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Cairns

Sunday is one of the best days to book for cheap flights from Seattle 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 Seattle 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 Seattle to Cairns in 2025. You can also book with separate airlines for your outbound and return journeys, from $539 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 Seattle 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 Seattle 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.

 

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Cairns Intl. Airport (CNS) cost?
Secure a cheap one-way flight from $539 or cheap return flight from $958 from Seattle - Tacoma Intl. Airport (SEA) to Cairns Intl. Airport (CNS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Seattle - Tacoma Intl. Airport (SEA) to Cairns Intl. Airport (CNS)?
The cheapest month to fly from SEA to CNS is November, when demand is low. Off-peak season is often when better flight deals are available between these airports.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Cairns Intl. Airport (CNS)?
To find the cheapest airline that'll fly you from SEA to CNS, use Expedia's filter tool. Customize your search based on what's important to you, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Cairns Intl. Airport (CNS)?
You'll need to hop on a flight with a layover when traveling from Seattle - Tacoma Intl. Airport (SEA) to Cairns Intl. Airport (CNS). Direct flights don't operate daily on this route. However, just filter your search to include one or two stops to find an option that works for you.
What day of the week has the most flights from SEA to CNS?
You'll typically find Tuesday the quietest day for flights, while Fridays are often 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 Seattle - Tacoma Intl. Airport (SEA) to Cairns Intl. Airport (CNS)?
To avoid possible delays on the Seattle - Tacoma Intl. Airport (SEA) to Cairns Intl. Airport (CNS) route, aim to travel before 3 PM. Flights after this time have a 22% higher chance of being 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 Seattle - Tacoma Intl. Airport (SEA) to Cairns Intl. Airport (CNS) last-minute?
Last-minute fares from SEA to CNS are usually more expensive. To secure the best prices, start looking for flights ahead of time. That said, if your travel plans are flexible, you may land a cheap ticket right before your trip.
Is it cheaper to book a SEA to CNS flight and hotel package?
You can save money by booking a SEA to CNS 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 it all in one place. Once you've chosen your preferred accommodations and flights, you can add extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Cairns Intl. Airport (CNS)?
If you booked your SEA 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, head to our Customer Service portal if you want more information.

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*Available to One Key members.