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$661+ Cheap flights from Perth (PER) to Seattle (SEA)

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 9/29. Fares are subject to change and may not be available on all flights or dates of travel.
PER — SEA
Aug 26 — Sep 21
Wed 8/26
Wed 9/2
1 adult, Economy
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Cheap flight deals from Perth to Seattle

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

This CheapTickets deal was found by Cheapflights users on 7/24. 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 CheapTickets is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/85:35 am
PER
-
SEA
2 stops44h 05m
Multiple Airlines
Tue 9/1512:50 pm
SEA
-
PER
2 stops48h 30m
Multiple Airlines
Deal found 7/24$1,107
This Trip.com deal was found by Cheapflights users on 7/24. 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 9/79:55 am
PER
-
SEA
3 stops44h 20m
Multiple Airlines
Sun 9/1312:10 am
SEA
-
PER
3 stops61h 10m
Multiple Airlines
Deal found 7/24$1,139
This Trip.com deal was found by Cheapflights users on 7/26. 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 10/126:25 pm
PER
-
SEA
2 stops36h 45m
Multiple Airlines
Wed 10/211:15 am
SEA
-
PER
2 stops36h 05m
Multiple Airlines
Deal found 7/26$1,188
This Trip.com deal was found by Cheapflights users on 7/26. 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.
Fri 9/44:45 am
PER
-
SEA
3 stops44h 55m
Multiple Airlines
Thu 9/1012:50 pm
SEA
-
PER
3 stops47h 55m
Multiple Airlines
Deal found 7/26$1,205
This Trip.com deal was found by Cheapflights users on 7/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/105:35 am
PER
-
SEA
2 stops25h 35m
Multiple Airlines
Wed 9/161:15 am
SEA
-
PER
2 stops36h 05m
Multiple Airlines
Deal found 7/27$1,210
This Singapore Airlines deal was found by Cheapflights users on 7/26. 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 Singapore Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/121:45 pm
PER
-
SEA
1 stop34h 00m
Singapore Airlines
Thu 10/2210:15 am
SEA
-
PER
1 stop22h 40m
Singapore Airlines
Deal found 7/26$1,254

Find flight deals from Perth to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Perth (PER) to Seattle (SEA). 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 July 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,107
(CheapTickets)

One-way from

$661
(Kiwi.com)

Popular in

March

Cheapest in

February

Average price

$1,428
Provider with most accurate pricing for Perth-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Perth-Seattle/Tacoma Intl flights.
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From Perth to Seattle/Tacoma Intl
Search Deals
One-way flight from Perth to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($52 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 July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Perth to Seattle 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 July 27, 2026.
Use the filters below to find and compare flights from Perth to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PerthSeattle

PER - SEA

PERSEA

Perth

Mon 10/12

6:25 am-8:45 am

1 stop41h 20m

Seattle/Tacoma Intl

Mon 3/22

5:55 pm-2:45 pm

2 stops29h 50m

$1,417

PerthSeattle

PER - SEA

PERSEA

Perth

Sun 8/23

11:45 pm-11:26 pm

2 stops38h 41m

Seattle/Tacoma Intl

Mon 9/14

10:55 am-2:05 pm

2 stops36h 10m

$1,468

PerthSeattle

PER - SEA

PERSEA

Perth

Mon 8/24

3:30 pm-11:34 am

2 stops35h 04m

Seattle/Tacoma Intl

Mon 9/14

6:52 pm-11:40 am

2 stops25h 48m

$1,480

PerthSeattle

PER - SEA

PERSEA

Perth

Sun 8/16

11:45 pm-12:20 pm

2 stops27h 35m

Seattle/Tacoma Intl

Wed 9/9

1:16 pm-12:55 pm

2 stops32h 39m

$1,517

PerthSeattle

PER - SEA

PERSEA

Perth

Tue 8/18

3:30 pm-8:43 pm

2 stops44h 13m

Seattle/Tacoma Intl

Wed 9/9

3:30 pm-12:55 pm

2 stops30h 25m

$1,518

PerthSeattle

PER - SEA

PERSEA

Perth

Thu 10/8

10:30 am-10:25 pm

3 stops26h 55m

Seattle/Tacoma Intl

Thu 10/29

7:08 pm-12:25 pm

2 stops26h 17m

$1,813

PerthSeattle

PER - SEA

PERSEA

Perth

Mon 9/7

10:45 pm-12:45 pm

1 stop29h 00m

Seattle/Tacoma Intl

Mon 9/14

12:25 pm-6:50 am

1 stop27h 25m

$1,905
Quickest round-trip

PerthSeattle

PER - SEA

PERSEA

Perth

Fri 9/4

1:10 am-8:45 am

1 stop22h 35m

Seattle/Tacoma Intl

Sat 9/26

10:15 am-5:10 am

1 stop27h 55m

$1,986

PerthSeattle

PER - SEA

PERSEA

Perth

Mon 8/24

10:20 pm-1:35 pm

1 stop30h 15m

Seattle/Tacoma Intl

Tue 9/15

5:15 pm-5:35 pm

1 stop33h 20m

$2,050

PerthSeattle

PER - SEA

PERSEA

Perth

Sun 8/23

10:20 pm-1:35 pm

1 stop30h 15m

Seattle/Tacoma Intl

Sun 9/13

5:15 pm-5:35 pm

1 stop33h 20m

$2,050

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/22

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3
  • Most accurate provider: When it comes to deals on Perth-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Perth-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Perth-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Perth-Seattle 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 Perth-Seattle 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 Perth to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Perth 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 Perth to Seattle

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

Currently, February is the cheapest month in which you can book a flight from Perth to Seattle (average of $1,081). Flying from Perth to Seattle in March is currently the most expensive (average of $1,650). 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 Perth to Seattle?

Airfare is typical for this route at the moment.

Perth to Seattle flights typically cost between $1,066 and $1,483 in September.
The cheapest round-trip price found within the last 5 days was $1,107 on Multiple Airlines (Sep 8-Sep 15).

Related info for your journey

Find useful and relevant information for your journey from Perth to Seattle. 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 Perth to Seattle?

    There are many flights that can get you from Perth to Seattle in 38h 41m. Fly via United Airlines to get the fastest option. The distance from Perth to Seattle is about 9235 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Perth to Seattle 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 Perth to Seattle?

    Currently, February is the cheapest month in which you can book a flight from Perth to Seattle (average of $1,081). Flying from Perth to Seattle in March is currently the most expensive (average of $1,650). 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 Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Tacoma
Renton
Lacey
Leavenworth
Olympia
Edmonds
Snoqualmie
Tumwater
Tukwila
Centralia
Puyallup
Kent
Ellensburg
Fife
Marysville
Ocean Shores
Lakewood
Lynnwood
Issaquah

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