Latest deals
When to book
FAQs
Price Alerts

Cheap flights from Seattle to Cairns from $1,224

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Cairns departing on 8/31. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Seattle to Cairns

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
5:50 am - 11:10 amSEA  Seattle/Tacoma Intl-CNS Cairns
36h 20m2 stops Vancouver Intl Brisbane
Multiple Airlines Logo
6:00 am - 10:05 amCNS  Cairns-SEA Seattle/Tacoma Intl
21h 05m2 stops Brisbane Vancouver Intl
$1,224Multiple Airlines
Mon, Aug 31 - Wed, Sep 9
Air Canada Logo
5:50 am - 11:10 amSEA  Seattle/Tacoma Intl-CNS Cairns
36h 20m2 stops Vancouver Intl Brisbane
Air Canada Logo
6:00 am - 6:32 pmCNS  Cairns-SEA Seattle/Tacoma Intl
29h 32m2 stops Brisbane Vancouver Intl
$1,261Air Canada
Mon, Aug 31 - Tue, Sep 8
United Airlines Logo
10:44 am - 8:20 pmSEA  Seattle/Tacoma Intl-CNS Cairns
40h 36m2 stops San Francisco Melbourne
United Airlines Logo
6:00 am - 9:01 pmCNS  Cairns-SEA Seattle/Tacoma Intl
32h 01m2 stops Brisbane San Francisco
$1,280United Airlines
Tue, Sep 29 - Tue, Oct 6
Multiple Airlines Logo
5:59 pm - 6:25 pmSEA  Seattle/Tacoma Intl-CNS Cairns
31h 26m2 stops Los Angeles Sydney Kingsford Smith
Multiple Airlines Logo
6:45 am - 9:39 pmCNS  Cairns-SEA Seattle/Tacoma Intl
31h 54m2 stops Sydney Kingsford Smith Los Angeles
$1,344Multiple Airlines
Wed, Sep 9 - Wed, Sep 16
Multiple Airlines Logo
2:56 pm - 11:50 amSEA  Seattle/Tacoma Intl-CNS Cairns
27h 54m2 stops Los Angeles Melbourne
Multiple Airlines Logo
3:35 pm - 10:56 amCNS  Cairns-SEA Seattle/Tacoma Intl
36h 21m2 stops Sydney Kingsford Smith Los Angeles
$1,459Multiple Airlines
Thu, Sep 10 - Wed, Sep 16
Air Canada Logo
8:40 am - 2:55 pmSEA  Seattle/Tacoma Intl-CNS Cairns
36h 15m2 stops Vancouver Intl Sydney Kingsford Smith
Air Canada Logo
6:00 am - 9:27 amCNS  Cairns-SEA Seattle/Tacoma Intl
21h 27m2 stops Brisbane Vancouver Intl
$1,484Air Canada
Wed, Nov 4 - Sun, Nov 8
Air Canada Logo
3:15 pm - 2:00 pmSEA  Seattle/Tacoma Intl-CNS Cairns
28h 45m2 stops Vancouver Intl Brisbane
Air Canada Logo
6:00 am - 9:27 amCNS  Cairns-SEA Seattle/Tacoma Intl
21h 27m2 stops Brisbane Vancouver Intl
$1,485Air Canada
Thu, Feb 4 - Mon, Feb 8
Air Canada Logo
3:15 pm - 2:00 pmSEA  Seattle/Tacoma Intl-CNS Cairns
28h 45m2 stops Vancouver Intl Brisbane
Air Canada Logo
6:00 am - 9:27 amCNS  Cairns-SEA Seattle/Tacoma Intl
21h 27m2 stops Brisbane Vancouver Intl
$1,486Air Canada
Thu, Feb 4 - Mon, Feb 8
Qantas Airways Logo
5:02 pm - 12:55 pmSEA  Seattle/Tacoma Intl-CNS Cairns
26h 53m2 stops Los Angeles Sydney Kingsford Smith
Qantas Airways Logo
1:55 pm - 1:39 pmCNS  Cairns-SEA Seattle/Tacoma Intl
40h 44m3 stops Brisbane Sydney Kingsford Smith Los Angeles
$1,636Qantas Airways
Wed, Sep 9 - Wed, Sep 16
Qantas Airways Logo
5:44 pm - 9:30 pmSEA  Seattle/Tacoma Intl-CNS Cairns
34h 46m2 stops San Francisco Sydney Kingsford Smith
Qantas Airways Logo
11:20 am - 12:16 pmCNS  Cairns-SEA Seattle/Tacoma Intl
41h 56m3 stops Brisbane Melbourne Los Angeles
$1,723Qantas Airways
Tue, Sep 29 - Tue, Oct 6

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

United Airlines flights from Seattle to Cairns

Our best United Airlines deals on Seattle to Cairns flight tickets
United Airlines
Sep 29
SEA10:44 amSeattle/Tacoma Intl
40h 36m
2 stops
CNS8:20 pmCairns
Oct 6
CNS6:00 amCairns
32h 01m
2 stops
SEA9:01 pmSeattle/Tacoma Intl
$1,280
United Airlines
Aug 30
SEA1:16 pmSeattle/Tacoma Intl
28h 54m
2 stops
CNS11:10 amCairns
Sep 8
CNS6:00 amCairns
25h 24m
2 stops
SEA2:24 pmSeattle/Tacoma Intl
$1,596

Air Canada flights from Seattle to Cairns

Our best Air Canada deals on Seattle to Cairns flight tickets
Air Canada
Aug 31
SEA5:50 amSeattle/Tacoma Intl
36h 20m
2 stops
CNS11:10 amCairns
Sep 8
CNS6:00 amCairns
29h 32m
2 stops
SEA6:32 pmSeattle/Tacoma Intl
$1,261
Air Canada
Nov 4
SEA8:40 amSeattle/Tacoma Intl
36h 15m
2 stops
CNS2:55 pmCairns
Nov 8
CNS6:00 amCairns
21h 27m
2 stops
SEA9:27 amSeattle/Tacoma Intl
$1,484
Air Canada
Feb 4
SEA3:15 pmSeattle/Tacoma Intl
28h 45m
2 stops
CNS2:00 pmCairns
Feb 8
CNS6:00 amCairns
21h 27m
2 stops
SEA9:27 amSeattle/Tacoma Intl
$1,485

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Cairns that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 15, 2026.
Use the filters below to find and compare flights from Seattle to Cairns that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleCairns

SEA Seattle/Tacoma Intl - CNS Cairns

SEACNS

Seattle/Tacoma Intl

Mon 8/31

5:50 am-11:10 am

2 stops36h 20m

Cairns

Wed 9/9

6:00 am-10:05 am

2 stops21h 05m

$1,224

SeattleCairns

SEA Seattle/Tacoma Intl - CNS Cairns

SEACNS

Seattle/Tacoma Intl

Mon 8/31

5:50 am-11:10 am

2 stops36h 20m

Cairns

Tue 9/8

6:00 am-6:32 pm

2 stops29h 32m

$1,261

SeattleCairns

SEA Seattle/Tacoma Intl - CNS Cairns

SEACNS

Seattle/Tacoma Intl

Tue 9/29

10:44 am-8:20 pm

2 stops40h 36m

Cairns

Tue 10/6

6:00 am-9:01 pm

2 stops32h 01m

$1,280

SeattleCairns

SEA Seattle/Tacoma Intl - CNS Cairns

SEACNS

Seattle/Tacoma Intl

Wed 9/9

5:59 pm-6:25 pm

2 stops31h 26m

Cairns

Wed 9/16

6:45 am-9:39 pm

2 stops31h 54m

$1,344

SeattleCairns

SEA Seattle/Tacoma Intl - CNS Cairns

SEACNS

Seattle/Tacoma Intl

Thu 9/10

2:56 pm-11:50 am

2 stops27h 54m

Cairns

Wed 9/16

3:35 pm-10:56 am

2 stops36h 21m

$1,459

SeattleCairns

SEA Seattle/Tacoma Intl - CNS Cairns

SEACNS

Seattle/Tacoma Intl

Wed 11/4

8:40 am-2:55 pm

2 stops36h 15m

Cairns

Sun 11/8

6:00 am-9:27 am

2 stops21h 27m

$1,484
Quickest round-trip

SeattleCairns

SEA Seattle/Tacoma Intl - CNS Cairns

SEACNS

Seattle/Tacoma Intl

Thu 2/4

3:15 pm-2:00 pm

2 stops28h 45m

Cairns

Mon 2/8

6:00 am-9:27 am

2 stops21h 27m

$1,485

SeattleCairns

SEA Seattle/Tacoma Intl - CNS Cairns

SEACNS

Seattle/Tacoma Intl

Thu 2/4

3:15 pm-2:00 pm

2 stops28h 45m

Cairns

Mon 2/8

6:00 am-9:27 am

2 stops21h 27m

$1,486

SeattleCairns

SEA Seattle/Tacoma Intl - CNS Cairns

SEACNS

Seattle/Tacoma Intl

Wed 9/9

5:02 pm-12:55 pm

2 stops26h 53m

Cairns

Wed 9/16

1:55 pm-1:39 pm

3 stops40h 44m

$1,636

SeattleCairns

SEA Seattle/Tacoma Intl - CNS Cairns

SEACNS

Seattle/Tacoma Intl

Tue 9/29

5:44 pm-9:30 pm

2 stops34h 46m

Cairns

Tue 10/6

11:20 am-12:16 pm

3 stops41h 56m

$1,723

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

When to book flights from Seattle to Cairns

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Cairns according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Cairns (SEA to CNS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Cairns

Fastest flight time

31h 00m

Direct flights

None
The fastest flight from Seattle to Cairns takes 31h 00m
There are no direct flights from Seattle to Cairns. There are no popular flight routes from Seattle to Cairns.
Search flight deals

Frequently asked questions about flying from Seattle to Cairns

  • How far is Seattle/Tacoma Intl to Cairns by plane?

    The distance between Seattle/Tacoma Intl and Cairns is about 7157.5 mi. Typically, this will take 31h 00m by plane in normal conditions.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Cairns Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Cairns Airport refresh daily.

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Cairns Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Cairns Airport.

  • What documentation or ID do you need to fly to Cairns Airport?

    The necessary travel and health documents for your Cairns Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from Seattle to Cairns

  • How do I get Price Alerts for flights from Seattle to Cairns?

    Confirm your travel details to search for the latest offers for flights from Seattle to Cairns. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from Seattle to Cairns with momondo?

    With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

  • How does momondo find its flight prices?

    We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

Traveling to a place near Cairns?

Book flights to Cairns if you plan to visit one of these locations
Port Douglas
Mission Beach
Trinity Beach

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Cairns?

Finding the right flight to Cairns from Seattle is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Cairns quick and easy, saving you time and money.

Can I find flights from Seattle to Cairns with flexible booking policies on momondo?

momondo does allow users to show only those flights to Cairns from Seattle which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Seattle to Cairns?

momondo provides multiple filters to help you find the best flight to Cairns from Seattle. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Seattle to Cairns right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Cairns, momondo offers a useful price alert feature which will track prices for flights to Cairns from Seattle and alert you when they change.

An easier way to manage your Cairns trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Mon 9/14
Mon 9/21
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Australia