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Perth

$650+ 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 7/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PER
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Perth are usually found in February or October, booked 61 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 April 17, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$1,224
(Trip.com)

One-way from

$650
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$1,497
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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One-way flight from Seattle/Tacoma Intl to Perth
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Highest demand for flights based on searches. 10% potential increase in price ($175 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($37 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 17, 2025.

This Trip.com deal was found by Cheapflights users on 4/15. 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 5/61:50 amSEA - PER
2 stops48h 20mMultiple Airlines
Wed 5/219:55 pmPER - SEA
2 stops35h 55mMultiple Airlines
Deal found 4/15$1,224
This oojo deal was found by Cheapflights users on 4/17. 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.
Sat 10/254:30 pmSEA - PER
1 stop28h 30mQatar Airways
Sun 11/910:45 pmPER - SEA
1 stop29h 00mQatar Airways
Deal found 4/17$1,267
This Singapore Airlines deal was found by Cheapflights users on 4/16. 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.
Sat 10/2510:15 amSEA - PER
1 stop35h 20mSingapore Airlines
Sat 11/81:10 amPER - SEA
1 stop22h 00mSingapore Airlines
Deal found 4/16$1,341
This oojo deal was found by Cheapflights users on 4/15. 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.
Wed 5/77:00 amSEA - PER
2 stops33h 45mCathay Pacific
Wed 5/219:15 amPER - SEA
2 stops27h 21mCathay Pacific
Deal found 4/15$1,392
This Gurufare deal was found by Cheapflights users on 4/17. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/55:14 pmSEA - PER
2 stops39h 26mAir New Zealand
Fri 8/158:05 amPER - SEA
2 stops29h 01mAir New Zealand
Deal found 4/17$1,500
This Air Canada deal was found by Cheapflights users on 4/17. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/12:55 pmSEA - PER
2 stops33h 50mAir Canada
Sun 6/811:35 pmPER - SEA
2 stops29h 38mAir Canada
Deal found 4/17$1,855

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 17, 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 5/6

1:50 am-5:10 pm

2 stops48h 20m

Perth

Wed 5/21

9:55 pm-6:50 pm

2 stops35h 55m

$1,224

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 5/6

4:30 pm-6:40 pm

1 stop35h 10m

Perth

Sat 5/24

10:45 pm-12:45 pm

1 stop29h 00m

$1,268

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Wed 5/7

7:00 am-7:45 am

2 stops33h 45m

Perth

Wed 5/21

9:15 am-9:36 pm

2 stops27h 21m

$1,392

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 5/6

10:15 am-2:40 pm

1 stop37h 25m

Perth

Fri 5/23

1:10 am-8:45 am

1 stop22h 35m

$1,624

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sun 6/1

2:55 pm-3:45 pm

2 stops33h 50m

Perth

Sun 6/8

11:35 pm-2:13 pm

2 stops29h 38m

$1,855

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sun 6/1

5:35 pm-2:40 pm

2 stops30h 05m

Perth

Sun 6/8

11:45 pm-1:22 pm

2 stops28h 37m

$1,883

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Wed 7/9

4:30 pm-5:50 am

2 stops46h 20m

$650

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Wed 7/9

11:35 pm-7:25 am

1 stop40h 50m

$887

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sun 7/6

2:50 pm-2:40 pm

2 stops32h 50m

$963

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 7/8

4:30 pm-11:55 am

1 stop28h 25m

$984

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/17

Showing 1-10 of 13 results
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*
AranGrantPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 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 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.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Perth

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 April 11, 2025.

To ensure you get the cheapest price possible for a flight from Seattle to Perth, you should look to book at least 60 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, February is the cheapest month in which you can book a flight from Seattle to Perth (average of $1,447). 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 April 17, 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 April 17, 2025.
Singapore Airlines
8.1
Very good
1,288 reviews

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Overall

8.1

Crew

8.6

Food

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.
Singapore Airlines
8.1
Very good
1,288 reviews
Singapore Airlines
8.1
Very good
1,288 reviews

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Overall

8.1

Crew

8.6

Food

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.
Emirates
8.0
Very good
3,200 reviews
Singapore Airlines
8.1
Very good
1,288 reviews

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Overall

8.1

Crew

8.6

Food

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.
Cathay Pacific
7.5
Good
849 reviews
Singapore Airlines
8.1
Very good
1,288 reviews

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Overall

8.1

Crew

8.6

Food

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.
Qantas Airways
7.5
Good
819 reviews
Singapore Airlines
8.1
Very good
1,288 reviews

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Overall

8.1

Crew

8.6

Food

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.
Qatar Airways
7.4
Good
3,554 reviews
Singapore Airlines
8.1
Very good
1,288 reviews

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Overall

8.1

Crew

8.6

Food

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.

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 $1,268, 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 Cathay Pacific and Singapore Airlines - these airlines can fly you to your destination from $1,392 and $1,624, respectively. Users have found that Qatar Airways is 19% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Seattle to Perth one-way?

    To fly one-way, consider booking your trip with Philippine Airlines, which is currently one of the cheapest options available, starting at $887. United Airlines flights start at $963 while deals on Qatar Airways start at $984 one-way.

  • 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 $1,447). 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
Fremantle
Rottnest Island
Scarborough

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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 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 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$1,165Average$1,388FlexibilityNo cancel feeOn-time67%
Singapore AirlinesCheapest$1,199Average$1,553FlexibilityNo cancel feeOn-time81%
Qatar AirwaysCheapest$1,315Average$1,690FlexibilityNo cancel feeOn-time68%

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