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$513+ 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 10/27. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PER
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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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 September 11, 2025.

Round-trip from

$1,037
(Trip.com)

One-way from

$606
(Qantas Airways)

Popular in

January

Cheapest in

February

Average price

$1,460
From Seattle/Tacoma Intl to Perth
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One-way flight from Seattle/Tacoma Intl to Perth
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Highest demand for flights based on searches. 4% potential increase in price ($76 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($23 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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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 September 11, 2025.

This oojo deal was found by Cheapflights users on 9/11. 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 11/138:45 amSEA - PER
1 stop35h 50mSingapore Airlines
Wed 11/261:50 pmPER - SEA
1 stop33h 20mSingapore Airlines
Deal found 9/11$1,102
This Mytrip deal was found by Cheapflights users on 9/11. 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.
Sat 10/251:10 amSEA - PER
3 stops35h 50mMultiple Airlines
Sun 11/25:35 amPER - SEA
3 stops28h 35mMultiple Airlines
Deal found 9/11$1,112
This oojo deal was found by Cheapflights users on 9/9. 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.
Tue 10/2110:15 amSEA - PER
1 stop27h 55mSingapore Airlines
Wed 11/266:40 amPER - SEA
1 stop40h 30mSingapore Airlines
Deal found 9/9$1,165
This Trip.com deal was found by Cheapflights users on 9/9. 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.
Mon 10/201:30 amSEA - PER
2 stops36h 25mMultiple Airlines
Wed 11/267:05 amPER - SEA
2 stops27h 05mMultiple Airlines
Deal found 9/9$1,183
This FlightHub deal was found by Cheapflights users on 9/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/197:15 pmSEA - PER
2 stops36h 05mMultiple Airlines
Sun 11/910:30 pmPER - SEA
2 stops27h 01mMultiple Airlines
Deal found 9/9$1,195
This Mytrip deal was found by Cheapflights users on 9/10. 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.
Wed 10/221:30 amSEA - PER
3 stops36h 00mMultiple Airlines
Thu 11/138:30 pmPER - SEA
3 stops38h 05mMultiple Airlines
Deal found 9/10$1,196
This Kiwi.com deal was found by Cheapflights users on 9/10. 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.
Thu 10/2310:15 amSEA - PER
1 stop42h 25mMultiple Airlines
Wed 11/1211:15 pmPER - SEA
2 stops47h 55mMultiple Airlines
Deal found 9/10$1,223

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 September 11, 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

Tue 9/30

5:05 pm-11:20 am

2 stops27h 15m

Perth

Tue 10/21

10:55 pm-12:40 pm

2 stops28h 45m

$1,261

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 9/30

6:05 pm-11:20 am

2 stops26h 15m

Perth

Tue 10/21

10:55 pm-2:49 pm

2 stops30h 54m

$1,261

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Thu 10/23

3:46 pm-10:20 am

2 stops27h 34m

Perth

Tue 11/11

10:55 pm-1:02 pm

2 stops30h 07m

$1,261

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 10/21

2:40 pm-1:15 pm

2 stops31h 35m

Perth

Wed 11/26

8:00 am-6:11 pm

2 stops26h 11m

$1,262

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Thu 10/23

3:46 pm-10:20 am

2 stops27h 34m

Perth

Thu 11/13

8:00 am-6:57 pm

2 stops26h 57m

$1,262

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Thu 10/23

4:30 pm-6:40 pm

1 stop35h 10m

Perth

Tue 11/11

10:45 pm-11:40 am

1 stop28h 55m

$1,282

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Thu 11/13

8:00 pm-3:55 pm

2 stops27h 55m

Perth

Wed 11/26

3:15 pm-7:16 pm

2 stops44h 01m

$1,291

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sat 10/25

1:10 am-4:00 am

3 stops35h 50m

Perth

Sun 11/2

5:35 am-4:05 pm

2 stops25h 30m

$1,336

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Mon 10/20

7:00 am-5:10 am

2 stops31h 10m

Perth

Sun 11/2

5:05 pm-7:10 am

1 stop54h 05m

$1,337

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Fri 10/24

2:42 pm-9:35 pm

2 stops39h 53m

Perth

Tue 11/11

10:55 pm-1:02 pm

2 stops30h 07m

$1,339

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 19 results
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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 $1,438). Flying from Seattle to Perth in December is currently the most expensive (average of $2,172). 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.

What is the cheapest time of day to fly from SEA to PER?

Find hourly flight availability from Seattle to Perth. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

When flying from Seattle to Perth, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 12% versus a flight in the morning.

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 September 11, 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
1,365 reviews

Entertainment

8.0

Boarding

8.2

Comfort

8.0

Crew

8.6

Overall

8.1

Food

7.7

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Singapore Airlines
8.1
Very good
1,365 reviews
Singapore Airlines
8.1
Very good
1,365 reviews

Entertainment

8.0

Boarding

8.2

Comfort

8.0

Crew

8.6

Overall

8.1

Food

7.7

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Qantas Airways
7.5
Good
905 reviews
Singapore Airlines
8.1
Very good
1,365 reviews

Entertainment

8.0

Boarding

8.2

Comfort

8.0

Crew

8.6

Overall

8.1

Food

7.7

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Qatar Airways
7.4
Good
3,624 reviews
Singapore Airlines
8.1
Very good
1,365 reviews

Entertainment

8.0

Boarding

8.2

Comfort

8.0

Crew

8.6

Overall

8.1

Food

7.7

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Air Canada
7.1
Good
10,000 reviews
Singapore Airlines
8.1
Very good
1,365 reviews

Entertainment

8.0

Boarding

8.2

Comfort

8.0

Crew

8.6

Overall

8.1

Food

7.7

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.

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 26h 15m. 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 $1,158, Air Canada will fly you from Seattle to Perth and back. In addition to Air Canada, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Singapore Airlines and Qantas Airways - these airlines can fly you to your destination from $1,218 and $1,258, respectively. Users have found that Air Canada is 23% 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 $1,438). Flying from Seattle to Perth in December is currently the most expensive (average of $2,172). 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

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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
Spokane to Perth flights

Top 4 airlines flying from Seattle to Perth

Discover the top 4 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$1,158Average$1,330FlexibilityNo cancel feeOn-time67%
Singapore AirlinesCheapest$1,218Average$1,479FlexibilityNo cancel feeOn-time81%
Qantas AirwaysCheapest$1,258Average$1,451FlexibilityNo cancel feeOn-time74%
Qatar AirwaysCheapest$1,315Average$1,712FlexibilityNo cancel feeOn-time68%

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