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$980+ Cheap flights from Seattle (SEA) to Perth (PER)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PER
Jan 27 — Feb 31
Mon 1/27
Mon 2/3
1 adult, Economy
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The best prices from Seattle/Tacoma Intl to Perth are usually found in October or February, booked 63 days in advance, depart on a Sunday or Wednesday and return on a Monday

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 January 22, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$980
(Trip.com)

Popular in

July

Cheapest in

October

Average price

$1,668
Provider with most accurate pricing for Seattle/Tacoma Intl-Perth flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Perth flights.
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From Seattle/Tacoma Intl to Perth
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Highest demand for flights based on searches. 7% potential increase in price ($142 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($35 potential savings vs. average RT price).
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Average for round-trip flights in January 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 January 22, 2025.

This Trip.com deal was found by Cheapflights users on 1/21. 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 3/212:45 pmSEA - PER
2 stops35h 50mMultiple Airlines
Sun 3/99:30 pmPER - SEA
2 stops53h 25mMultiple Airlines
Deal found 1/21$991
This SmartFares deal was found by Cheapflights users on 1/22. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/195:05 pmSEA - PER
1 stop34h 40mQatar Airways
Wed 3/2610:45 pmPER - SEA
1 stop28h 55mQatar Airways
Deal found 1/22$1,246
This Singapore Airlines deal was found by Cheapflights users on 1/21. 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.
Tue 4/2210:15 amSEA - PER
1 stop22h 40mSingapore Airlines
Wed 5/141:10 amPER - SEA
1 stop22h 35mSingapore Airlines
Deal found 1/21$1,322
This oojo deal was found by Cheapflights users on 1/21. 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 3/29:25 pmSEA - PER
2 stops44h 10mCathay Pacific
Tue 3/1112:15 amPER - SEA
2 stops29h 38mCathay Pacific
Deal found 1/21$1,340
This United Airlines deal was found by Cheapflights users on 1/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/169:20 amSEA - PER
3 stops37h 25mUnited Airlines
Sun 2/2310:45 pmPER - SEA
2 stops28h 27mUnited Airlines
Deal found 1/22$1,566

Find flights from Seattle to Perth within your budget

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 January 22, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sun 3/2

12:45 pm-4:35 pm

2 stops35h 50m

Perth

Sun 3/9

9:30 pm-11:55 am

2 stops53h 25m

$991

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Wed 3/19

5:05 pm-6:45 pm

1 stop34h 40m

Perth

Wed 3/26

10:45 pm-12:40 pm

1 stop28h 55m

$1,246

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 4/22

10:15 am-11:55 pm

1 stop22h 40m

Perth

Wed 5/14

1:10 am-8:45 am

1 stop22h 35m

$1,322

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sun 3/2

9:25 pm-9:35 am

2 stops44h 10m

Perth

Tue 3/11

12:15 am-2:53 pm

2 stops29h 38m

$1,340

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sun 2/16

9:20 am-2:45 pm

3 stops37h 25m

Perth

Sun 2/23

10:45 pm-11:12 am

2 stops28h 27m

$1,566

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

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 January.
ProviderPrice AccuracyTrust Score*
AranGrantPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice 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 AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Seattle-Perth flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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.

Travel insights for flights from Seattle to Perth

Get recent, data-driven insights about flights from Seattle to Perth including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Seattle to Perth?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Perth. Price data was last updated on January 17, 2025.

To ensure you get the cheapest price possible for a flight from Seattle to Perth, you should look to book at least 63 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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 $1,511). 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 January 22, 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.

Rainfall in Perth by month

Plan your trip to Perth by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Perth ranges from 0.0 - 6.7 inches per month. June is typically the wettest month, when rainfall can reach 6.7 in. January is typically the driest time to visit Perth when rainfall is around 0.0 in.

Temperature in Perth by month

Plan your trip to Perth by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Perth, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 53.6 F).

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 January 22, 2025.
Singapore Airlines
8.1
Very good
1,328 reviews

Crew

8.6

Comfort

7.9

Food

7.7

Entertainment

8.0

Overall

8.1

Boarding

8.2

Reviews

1 / 10

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles

Singapore Airlines
8.1
Very good
1,328 reviews
Singapore Airlines
8.1
Very good
1,328 reviews

Crew

8.6

Comfort

7.9

Food

7.7

Entertainment

8.0

Overall

8.1

Boarding

8.2

Reviews

1 / 10

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles

Cathay Pacific
7.5
Good
831 reviews
Singapore Airlines
8.1
Very good
1,328 reviews

Crew

8.6

Comfort

7.9

Food

7.7

Entertainment

8.0

Overall

8.1

Boarding

8.2

Reviews

1 / 10

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles

Qatar Airways
7.5
Good
3,747 reviews
Singapore Airlines
8.1
Very good
1,328 reviews

Crew

8.6

Comfort

7.9

Food

7.7

Entertainment

8.0

Overall

8.1

Boarding

8.2

Reviews

1 / 10

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles

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.

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

    Currently priced at $1,246, Qatar Airways will fly you from Seattle to Perth and back. In addition to Qatar Airways, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Singapore Airlines and Cathay Pacific - these airlines can fly you to your destination from $1,322 and $1,340, respectively. Users have found that Qatar Airways is 24% 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 $1,511). 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 Seattle?

Book flights to Seattle if you plan to visit one of these locations
Mandurah
Fremantle
Rottnest Island
Scarborough

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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 January 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$1,165Average$1,388FlexibilityNo cancel feeOn-time67%
Singapore AirlinesCheapest$1,199Average$1,605FlexibilityNo cancel feeOn-time81%
Qatar AirwaysCheapest$1,338Average$1,676FlexibilityNo cancel feeOn-time68%
Qantas AirwaysCheapest$1,597Average$1,668FlexibilityNo cancel feeOn-time74%
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