HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Perth

$500+ Cheap flights from Seattle (SEA) to Perth (PER)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/14. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PER
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to Perth with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Seattle to Perth

Cheapest flights from Seattle to Perth
Explore the most affordable flight options available from Seattle to Perth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 27, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/210:15 am
SEA
-
PER
1 stop30h 55m
Multiple Airlines
Wed 5/136:25 pm
PER
-
SEA
1 stop29h 20m
Multiple Airlines
Deal found 1/26$1,047
This oojo deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/710:15 am
SEA
-
PER
1 stop35h 15m
Singapore Airlines
Mon 4/271:10 am
PER
-
SEA
1 stop22h 35m
Singapore Airlines
Deal found 1/26$1,107
This oojo deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/310:15 am
SEA
-
PER
1 stop27h 55m
Singapore Airlines
Sat 10/31:45 pm
PER
-
SEA
1 stop34h 00m
Singapore Airlines
Deal found 1/26$1,135
This oojo deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/710:15 am
SEA
-
PER
1 stop27h 55m
Multiple Airlines
Mon 4/271:10 am
PER
-
SEA
2 stops30h 07m
Multiple Airlines
Deal found 1/25$1,140
This Kiwi.com deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/38:45 am
SEA
-
PER
1 stop27h 30m
Multiple Airlines
Wed 3/112:35 pm
PER
-
SEA
2 stops44h 05m
Multiple Airlines
Deal found 1/25$1,156
This oojo deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/38:45 am
SEA
-
PER
1 stop35h 50m
Singapore Airlines
Wed 3/115:05 pm
PER
-
SEA
1 stop30h 05m
Singapore Airlines
Deal found 1/25$1,158
This Trip.com deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/44:30 pm
SEA
-
PER
2 stops44h 45m
Multiple Airlines
Thu 5/146:25 pm
PER
-
SEA
2 stops35h 00m
Multiple Airlines
Deal found 1/26$1,163
This Trip.com deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/161:55 am
SEA
-
PER
2 stops28h 50m
Multiple Airlines
Mon 9/147:20 am
PER
-
SEA
2 stops27h 25m
Multiple Airlines
Deal found 1/25$1,164
This Trip.com deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/412:10 am
SEA
-
PER
2 stops29h 35m
Multiple Airlines
Wed 2/117:25 am
PER
-
SEA
2 stops26h 45m
Multiple Airlines
Deal found 1/26$1,184

Find flight deals from Seattle to Perth

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Perth (PER). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,047
(Kiwi.com)

One-way from

$620
(Trip.com)

Popular in

November

Cheapest in

February

Average price

$1,508
Provider with most accurate pricing for Seattle/Tacoma Intl-Perth flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Perth flights.
Search Deals
From Seattle/Tacoma Intl to Perth
Search Deals
One-way flight from Seattle/Tacoma Intl to Perth
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($184 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($23 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Perth 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, Cheapflights users made 2,558,603 searches. Data last updated January 27, 2026.
Use the filters below to find and compare flights from Seattle to Perth that are best for you.

Fly from

Seattle

Fly to

Perth

Route

Depart

Return

Price

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 4/7

10:15 am-5:10 am

1 stop27h 55m

Perth

Mon 4/27

1:10 am-8:45 am

1 stop22h 35m

$1,118

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 4/7

10:15 am-5:10 am

1 stop27h 55m

Perth

Mon 4/27

1:10 am-4:17 pm

2 stops30h 07m

$1,140

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 3/3

8:45 am-4:15 am

1 stop27h 30m

Perth

Wed 3/11

2:35 pm-7:40 pm

2 stops44h 05m

$1,156

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sat 1/31

12:10 am-2:10 pm

2 stops46h 00m

Perth

Tue 2/17

6:50 am-6:10 pm

2 stops27h 20m

$1,269

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Thu 3/12

9:45 am-12:35 pm

1 stop59h 50m

Perth

Wed 3/18

1:15 am-8:10 am

1 stop21h 55m

$1,290

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Thu 4/9

10:15 am-4:15 am

1 stop27h 00m

Perth

Sat 4/18

4:40 am-7:15 pm

3 stops29h 35m

$1,291

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Fri 3/13

10:30 pm-7:20 am

1 stop41h 50m

Perth

Fri 3/20

2:35 pm-9:00 am

2 stops33h 25m

$1,305

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Wed 3/11

12:10 am-4:15 am

2 stops37h 05m

Perth

Thu 3/19

5:35 am-2:55 pm

2 stops48h 20m

$1,324

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 4/7

6:59 pm-7:45 am

2 stops45h 46m

Perth

Mon 4/27

12:10 am-7:04 am

2 stops45h 54m

$1,329

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Thu 5/14

12:55 am-7:50 pm

3 stops51h 55m

$500

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 15 results
1
2

Compare providers for flights from Seattle to Perth

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Perth in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Perth flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Perth flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Perth flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Perth flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Perth flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Perth

Have a flexible travel schedule? Discover the best time to fly to Perth from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Perth

What is the cheapest month to book a flight from Seattle to Perth?

Currently, February is the cheapest month in which you can book a flight from Seattle to Perth (average of $961). Flying from Seattle to Perth in January is currently the most expensive (average of $1,481). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Perth

Get insights into the airlines that provide service to Perth. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Perth. Reviews last updated January 27, 2026.
See what other customers who have flown with Singapore Airlines, Qantas Airways, and Qatar Airways from Seattle to Perth have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.2
Very good
1,439 reviews

Boarding

8.3

Comfort

8.0

Overall

8.2

Food

7.8

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BCN - SIN

Staff at Barcelona were fantastic, they helped me change a flight and nothing was any problem. Thank you Dina.
Singapore Airlines
8.2
Very good
1,439 reviews
Singapore Airlines
8.2
Very good
1,439 reviews

Boarding

8.3

Comfort

8.0

Overall

8.2

Food

7.8

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BCN - SIN

Staff at Barcelona were fantastic, they helped me change a flight and nothing was any problem. Thank you Dina.
Qantas Airways
7.5
Good
978 reviews
Singapore Airlines
8.2
Very good
1,439 reviews

Boarding

8.3

Comfort

8.0

Overall

8.2

Food

7.8

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BCN - SIN

Staff at Barcelona were fantastic, they helped me change a flight and nothing was any problem. Thank you Dina.
Qatar Airways
7.4
Good
3,731 reviews
Singapore Airlines
8.2
Very good
1,439 reviews

Boarding

8.3

Comfort

8.0

Overall

8.2

Food

7.8

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BCN - SIN

Staff at Barcelona were fantastic, they helped me change a flight and nothing was any problem. Thank you Dina.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Perth. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Seattle to Perth?

    Departing from Seattle to Perth will take you 27h 55m. Seattle and Perth are separated by a distance of 9235 mi.

  • What are the cheapest airlines flying from Seattle to Perth round-trip?

    Currently priced at $928, Qatar Airways will fly you from Seattle to Perth and back. In addition to Qatar Airways, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Qantas Airways and Singapore Airlines - these airlines can fly you to your destination from $1,258 and $1,265, respectively. Users have found that Qatar Airways is 37% cheaper than the other options available to this destination.

  • Can I find deals for flights from Seattle to Perth that include hotel bookings?

    Yes. In addition to deals on Seattle to Perth flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Perth?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Perth.

  • Can I find deals for business class flights from Seattle to Perth?

    Yes. Cheapflights offers flight deals from Seattle to Perth by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Perth?

    Currently, February is the cheapest month in which you can book a flight from Seattle to Perth (average of $961). Flying from Seattle to Perth in January is currently the most expensive (average of $1,481). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Perth?

Book flights to Perth if you plan to visit one of these locations
Rottnest Island
Scarborough

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to Perth

See prices for flight routes from nearby airports that may be better suited for you.
Portland to Perth flights
Spokane to Perth flights

Top 3 airlines flying from Seattle to Perth

Discover the top 3 airlines that operate flights from Seattle to Perth. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
Qatar AirwaysCheapest$928Average$1,487FlexibilityNo cancel feeOn-time68%
Qantas AirwaysCheapest$1,258Average$1,451FlexibilityNo cancel feeOn-time74%
Singapore AirlinesCheapest$1,265Average$1,486FlexibilityNo cancel feeOn-time81%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.