HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Perth

$715+ 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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PER
May 28 — Jun 41
Thu 5/28
Thu 6/4
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 April 28, 2026.

This oojo deal was found by Cheapflights users on 4/25. 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.
Mon 11/94:05 pm
SEA
-
PER
1 stop34h 40m
Qatar Airways
Fri 11/2010:45 pm
PER
-
SEA
1 stop28h 55m
Qatar Airways
Deal found 4/25$1,257
This Justfly.com deal was found by Cheapflights users on 4/25. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/94:05 pm
SEA
-
PER
1 stop34h 40m
Multiple Airlines
Fri 11/2010:45 pm
PER
-
SEA
2 stops38h 19m
Multiple Airlines
Deal found 4/25$1,270
This Gotogate deal was found by Cheapflights users on 4/26. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/184:25 pm
SEA
-
PER
1 stop35h 10m
Qatar Airways
Sat 11/1410:45 pm
PER
-
SEA
1 stop28h 55m
Qatar Airways
Deal found 4/26$1,284
This Gotogate deal was found by Cheapflights users on 4/25. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/14:05 pm
SEA
-
PER
1 stop34h 40m
Qatar Airways
Sat 11/1410:45 pm
PER
-
SEA
1 stop28h 55m
Qatar Airways
Deal found 4/25$1,286
This oojo deal was found by Cheapflights users on 4/27. 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 10/36:25 am
PER
-
SEA
1 stop41h 20m
Singapore Airlines
Deal found 4/27$1,304
This oojo deal was found by Cheapflights users on 4/26. 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.
Sun 8/2310:15 am
SEA
-
PER
1 stop27h 55m
Multiple Airlines
Sun 8/301:10 am
PER
-
SEA
2 stops30h 01m
Multiple Airlines
Deal found 4/26$1,353
This Trip.com deal was found by Cheapflights users on 4/25. 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.
Fri 11/134:05 pm
SEA
-
PER
1 stop27h 50m
Qatar Airways
Fri 11/2710:45 pm
PER
-
SEA
1 stop28h 55m
Qatar Airways
Deal found 4/25$1,375
This Qatar Airways deal was found by Cheapflights users on 4/23. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/285:05 pm
SEA
-
PER
1 stop34h 40m
Qatar Airways
Sun 11/110:45 pm
PER
-
SEA
1 stop28h 55m
Qatar Airways
Deal found 4/23$1,378
This Gotogate deal was found by Cheapflights users on 4/23. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/54:05 pm
SEA
-
PER
1 stop27h 50m
Qatar Airways
Sat 12/2610:45 pm
PER
-
SEA
1 stop28h 55m
Qatar Airways
Deal found 4/23$1,404

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 April 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,284
(Gotogate)

One-way from

$715
(Kiwi.com)

Popular in

July

Cheapest in

August

Average price

$1,392
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. 2% potential increase in price ($43 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 April 28, 2026.
Use the filters below to find and compare flights from Seattle to Perth that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Mon 7/20

4:25 pm-6:35 pm

1 stop35h 10m

Perth

Wed 7/29

10:45 pm-12:25 pm

1 stop28h 40m

$1,378

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Mon 6/8

1:30 pm-2:40 pm

2 stops34h 10m

Perth

Mon 6/15

11:45 pm-2:30 pm

2 stops29h 45m

$1,489

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 5/26

3:33 pm-2:40 pm

2 stops32h 07m

Perth

Tue 6/2

3:30 pm-9:10 pm

3 stops44h 40m

$1,496

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sun 6/7

5:04 pm-12:30 pm

2 stops28h 26m

Perth

Sun 6/14

11:55 pm-6:47 pm

2 stops33h 52m

$1,503

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Wed 6/10

8:30 am-2:40 pm

2 stops39h 10m

Perth

Wed 6/17

3:30 pm-9:10 pm

3 stops44h 40m

$1,546

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Mon 7/20

5:04 pm-11:40 am

2 stops27h 36m

Perth

Wed 7/29

11:55 pm-9:10 pm

3 stops36h 15m

$1,546

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Thu 5/21

1:30 pm-2:40 pm

2 stops34h 10m

Perth

Thu 5/28

11:45 pm-9:10 pm

3 stops36h 25m

$1,589
Quickest round-trip

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Mon 6/8

5:05 pm-12:15 pm

1 stop28h 10m

Perth

Mon 6/15

10:55 pm-12:25 pm

1 stop28h 30m

$1,753

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Mon 6/8

5:05 pm-12:15 pm

1 stop28h 10m

Perth

Mon 6/15

10:55 pm-11:15 am

2 stops51h 20m

$1,762
Cheapest one-way
Quickest one-way

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sat 8/15

1:05 pm-8:55 am

2 stops28h 50m

$856

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/25

Showing 1-10 of 19 resultsSorted by cheapest first
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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 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 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, August is the cheapest month in which you can book a flight from Seattle to Perth (average of $1,232). Flying from Seattle to Perth in July is currently the most expensive (average of $1,898). 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.

How much does it cost to fly round-trip from Seattle to Perth?

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 April 28, 2026.
See what other customers who have flown with Singapore Airlines,Qantas Airways, andQatar 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
1,502 reviews

Crew

8.6

Boarding

8.3

Food

7.8

Entertainment

8.0

Overall

8.2

Comfort

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.
Singapore Airlines
8.2
Very good
1,502 reviews
Singapore Airlines
8.2
Very good
1,502 reviews

Crew

8.6

Boarding

8.3

Food

7.8

Entertainment

8.0

Overall

8.2

Comfort

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.
Qantas Airways
7.5
Good
1,028 reviews
Singapore Airlines
8.2
Very good
1,502 reviews

Crew

8.6

Boarding

8.3

Food

7.8

Entertainment

8.0

Overall

8.2

Comfort

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.
Qatar Airways
7.4
Good
3,726 reviews
Singapore Airlines
8.2
Very good
1,502 reviews

Crew

8.6

Boarding

8.3

Food

7.8

Entertainment

8.0

Overall

8.2

Comfort

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.

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 34h 10m. 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 $1,179, 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 $1,325, respectively. Users have found that Singapore Airlines is 20% 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, August is the cheapest month in which you can book a flight from Seattle to Perth (average of $1,232). Flying from Seattle to Perth in July is currently the most expensive (average of $1,898). 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

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 April 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$1,179Average$1,515FlexibilityNo cancel feeOn-time81%
Qantas AirwaysCheapest$1,258Average$1,451FlexibilityNo cancel feeOn-time74%
Qatar AirwaysCheapest$1,325Average$1,934FlexibilityNo 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.