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Perth

$387+ 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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PER
Apr 12 — Apr 191
Sun 4/12
Sun 4/19
1 adult, Economy
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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 March 13, 2026.

This Trip.com deal was found by Cheapflights users on 3/12. 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 11/111:55 pm
SEA
-
PER
2 stops36h 20m
Multiple Airlines
Wed 11/185:35 am
PER
-
SEA
2 stops30h 00m
Multiple Airlines
Deal found 3/12$936
This KAYAK deal was found by Cheapflights users on 3/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1712:25 pm
SEA
-
PER
1 stop43h 15m
Cathay Pacific
Sun 9/1312:10 am
PER
-
SEA
1 stop25h 10m
Cathay Pacific
Deal found 3/8$978
This KAYAK deal was found by Cheapflights users on 3/12. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2410:50 am
SEA
-
PER
1 stop28h 05m
Cathay Pacific
Sun 1/178:30 am
PER
-
SEA
1 stop40h 40m
Cathay Pacific
Deal found 3/12$979
This Trip.com deal was found by Cheapflights users on 3/9. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/291:10 am
SEA
-
PER
2 stops48h 20m
Multiple Airlines
Sun 11/85:35 am
PER
-
SEA
2 stops28h 35m
Multiple Airlines
Deal found 3/9$992
This Trip.com deal was found by Cheapflights users on 3/13. 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.
Tue 8/114:30 pm
SEA
-
PER
2 stops33h 40m
Multiple Airlines
Mon 8/246:25 pm
PER
-
SEA
2 stops35h 00m
Multiple Airlines
Deal found 3/13$1,003
This Cathay Pacific deal was found by Cheapflights users on 3/12. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1910:50 am
SEA
-
PER
1 stop28h 05m
Cathay Pacific
Sun 1/178:30 am
PER
-
SEA
1 stop40h 40m
Cathay Pacific
Deal found 3/12$1,012
This KAYAK deal was found by Cheapflights users on 3/12. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2110:50 am
SEA
-
PER
1 stop28h 05m
Cathay Pacific
Mon 1/188:30 am
PER
-
SEA
1 stop40h 40m
Cathay Pacific
Deal found 3/12$1,029
This Cathay Pacific deal was found by Cheapflights users on 3/12. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2110:50 am
SEA
-
PER
1 stop44h 05m
Cathay Pacific
Tue 1/1912:25 am
PER
-
SEA
1 stop24h 45m
Cathay Pacific
Deal found 3/12$1,062
This KAYAK deal was found by Cheapflights users on 3/12. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/18:41 am
SEA
-
PER
2 stops46h 14m
Cathay Pacific
Wed 11/188:30 am
PER
-
SEA
1 stop40h 40m
Cathay Pacific
Deal found 3/12$1,071

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 March 13, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$978
(KAYAK)

One-way from

$387
(Trip.com)

Popular in

October

Cheapest in

February

Average price

$1,345
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. 3% potential increase in price ($51 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 13, 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

Tue 4/7

4:25 pm-6:35 pm

1 stop35h 10m

Perth

Tue 4/28

3:40 pm-7:46 pm

2 stops43h 06m

$1,361

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Fri 5/8

8:41 am-10:40 pm

2 stops46h 59m

Perth

Tue 5/12

8:20 am-10:05 am

1 stop40h 45m

$1,422
Quickest round-trip

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Fri 5/8

4:30 pm-11:55 am

1 stop28h 25m

Perth

Tue 5/12

10:45 pm-12:45 pm

1 stop29h 00m

$1,461

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sat 4/25

8:00 am-9:55 pm

2 stops46h 55m

Perth

Sat 5/2

6:05 am-12:53 am

2 stops33h 48m

$2,017

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 4/7

1:30 pm-12:40 am

2 stops44h 10m

Perth

Tue 4/28

9:00 pm-11:40 am

3 stops53h 40m

$2,912
Cheapest one-way
Quickest one-way

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 5/5

10:15 am-4:20 am

1 stop27h 05m

$387

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 4/7

11:45 am-4:20 am

3 stops49h 35m

$544

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Mon 3/23

12:10 am-4:15 am

3 stops37h 05m

$555

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 4/7

4:25 pm-6:35 pm

1 stop35h 10m

$721

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 3/24

5:05 pm-6:45 pm

1 stop34h 40m

$908

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/12

Showing 1-10 of 13 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 March.
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, October is the cheapest month in which you can book a flight from Seattle to Perth (average of $1,166). Flying from Seattle to Perth in January is currently the most expensive (average of $1,479). 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 March 13, 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
1,475 reviews

Comfort

8.0

Overall

8.2

Food

7.8

Crew

8.6

Entertainment

8.0

Boarding

8.3

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
1,475 reviews
Singapore Airlines
8.2
Very good
1,475 reviews

Comfort

8.0

Overall

8.2

Food

7.8

Crew

8.6

Entertainment

8.0

Boarding

8.3

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
1,004 reviews
Singapore Airlines
8.2
Very good
1,475 reviews

Comfort

8.0

Overall

8.2

Food

7.8

Crew

8.6

Entertainment

8.0

Boarding

8.3

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
3,740 reviews
Singapore Airlines
8.2
Very good
1,475 reviews

Comfort

8.0

Overall

8.2

Food

7.8

Crew

8.6

Entertainment

8.0

Boarding

8.3

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 35h 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 $1,218, 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 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, October is the cheapest month in which you can book a flight from Seattle to Perth (average of $1,166). Flying from Seattle to Perth in January is currently the most expensive (average of $1,479). 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

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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 March 13, 2026.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$1,218Average$1,562FlexibilityNo cancel feeOn-time81%
Qantas AirwaysCheapest$1,258Average$1,451FlexibilityNo cancel feeOn-time74%
Qatar AirwaysCheapest$1,325Average$1,934FlexibilityNo cancel feeOn-time68%

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