HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Perth

$456+ 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 3/15. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PER
déc. 10 — déc. 171
mer. 12/10
mer. 12/17
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.

Find 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 novembre 10, 2025.

This Trip.com deal was found by Cheapflights users on 11/8. 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.
mar. 11/1112:10 amSEA - PER
2 stops45h 15mMultiple Airlines
ven. 11/147:00 pmPER - SEA
2 stops39h 10mMultiple Airlines
Deal found 11/8$1,267
This oojo deal was found by Cheapflights users on 11/9. 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.
ven. 12/56:25 amSEA - PER
2 stops32h 30mCathay Pacific
ven. 12/128:30 amPER - SEA
2 stops29h 55mCathay Pacific
Deal found 11/9$1,607
This oojo deal was found by Cheapflights users on 11/9. 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.
jeu. 12/252:50 pmSEA - PER
2 stops38h 10mQantas Airways
ven. 1/910:45 pmPER - SEA
2 stops29h 44mQantas Airways
Deal found 11/9$1,643
This oojo deal was found by Cheapflights users on 11/9. 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.
dim. 12/77:54 pmSEA - PER
2 stops59h 01mCathay Pacific
dim. 12/148:30 amPER - SEA
2 stops46h 06mCathay Pacific
Deal found 11/9$1,666
This Qantas Airways deal was found by Cheapflights users on 11/9. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 12/252:50 pmSEA - PER
2 stops38h 10mQantas Airways
dim. 1/1110:45 pmPER - SEA
2 stops35h 07mQantas Airways
Deal found 11/9$1,680
This Mytrip deal was found by Cheapflights users on 11/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 12/612:10 amSEA - PER
2 stops33h 15mMultiple Airlines
dim. 12/146:30 pmPER - SEA
3 stops44h 16mMultiple Airlines
Deal found 11/9$1,706

Cheap 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 novembre 10, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,089
(oojo)

One-way from

$456
(Trip.com)

Popular in

January

Cheapest in

September

Average price

$1,302
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. 9% potential increase in price ($160 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($53 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
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 novembre 10, 2025.
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

ven. 12/5

6:25 am-6:55 am

2 stops32h 30m

Perth

ven. 12/12

8:30 am-10:25 pm

2 stops29h 55m

$1,607

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

jeu. 12/25

2:50 pm-6:45 pm

2 stops35h 55m

Perth

mer. 1/7

10:45 pm-6:05 pm

2 stops35h 20m

$1,680

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

jeu. 12/25

2:50 pm-9:00 pm

2 stops38h 10m

Perth

sam. 1/10

11:55 pm-7:22 pm

2 stops35h 27m

$1,680

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

mar. 12/23

6:00 am-9:00 pm

2 stops47h 00m

Perth

dim. 1/11

10:45 pm-6:05 pm

2 stops35h 20m

$1,840

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

mar. 12/23

6:00 am-4:15 pm

2 stops42h 15m

Perth

mer. 1/7

10:45 pm-5:52 pm

2 stops35h 07m

$1,840

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

mar. 12/23

6:00 am-2:30 pm

2 stops40h 30m

Perth

jeu. 1/8

10:45 pm-7:22 pm

2 stops36h 37m

$1,840

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

mar. 12/23

6:00 am-2:30 pm

2 stops40h 30m

Perth

sam. 1/10

11:55 pm-7:22 pm

2 stops35h 27m

$1,840

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

mar. 12/23

6:00 am-9:00 pm

2 stops47h 00m

Perth

lun. 1/12

10:45 pm-5:52 pm

2 stops35h 07m

$1,840

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

mar. 12/23

6:00 am-2:30 pm

2 stops40h 30m

Perth

ven. 1/9

10:45 pm-7:22 pm

2 stops36h 37m

$1,840

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

sam. 12/6

12:10 am-10:30 pm

3 stops30h 20m

Perth

dim. 12/14

6:30 pm-10:46 pm

3 stops44h 16m

$1,887

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/9

Showing 1-10 of 16 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 November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
AranGrantPrice Accuracy2 starsTrust Score*3 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seattle-Perth flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 $1,014). Flying from Seattle to Perth in January is currently the most expensive (average of $1,632). 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 novembre 10, 2025.
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
8.1
Very good
1,396 reviews

Crew

8.6

Entertainment

8.0

Food

7.7

Comfort

8.0

Overall

8.1

Boarding

8.3

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
8.1
Very good
1,396 reviews
Singapore Airlines
8.1
Very good
1,396 reviews

Crew

8.6

Entertainment

8.0

Food

7.7

Comfort

8.0

Overall

8.1

Boarding

8.3

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
933 reviews
Singapore Airlines
8.1
Very good
1,396 reviews

Crew

8.6

Entertainment

8.0

Food

7.7

Comfort

8.0

Overall

8.1

Boarding

8.3

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
3,661 reviews
Singapore Airlines
8.1
Very good
1,396 reviews

Crew

8.6

Entertainment

8.0

Food

7.7

Comfort

8.0

Overall

8.1

Boarding

8.3

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 32h 30m. Seattle and Perth are separated by a distance of 9235 mi. This flight may include one or multiple stops.

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

    Currently priced at $1,239, Singapore Airlines will fly you from Seattle to Perth and back. In addition to Singapore Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Qantas Airways and Qatar Airways - these airlines can fly you to your destination from $1,258 and $1,307, respectively. Users have found that Singapore Airlines is 17% 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 $1,014). Flying from Seattle to Perth in January is currently the most expensive (average of $1,632). 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
Fremantle
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 novembre 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$1,239Average$1,483FlexibilityNo cancel feeOn-time81%
Qantas AirwaysCheapest$1,258Average$1,448FlexibilityNo cancel feeOn-time74%
Qatar AirwaysCheapest$1,307Average$1,499FlexibilityNo cancel feeOn-time68%

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.