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Cheap flights from Seattle to Perth from $1,083

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 15/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PER
27 Apr — 4 May1
1 adult

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 22 April 2025.

Round-trip from

$1,844

One-way from

$1,083

Popular in

December

Cheapest in

February

Average price

$2,333
6/9-21/9
  • 6/9-21/9
  • 4 total stops
  • 89h 00m total
  • Seattle to Perth
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15/7
  • 15/7
  • 2 total stops
  • 45h 00m total
  • Seattle to Perth
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($426 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease ($90 potential savings vs. average return 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 22 April 2025.

Sat 6/901:40SEA - PER
2 stops51h 10mMultiple Airlines
Sun 21/920:30PER - SEA
2 stops37h 50mMultiple Airlines
Deal found 20/4$1,844
Wed 1/1016:30SEA - PER
1 stop28h 25mQatar Airways
Tue 7/1022:45PER - SEA
1 stop29h 00mQatar Airways
Deal found 20/4$1,976
Sat 25/1010:15SEA - PER
1 stop35h 20mSingapore Airlines
Sat 8/1101:10PER - SEA
1 stop22h 00mSingapore Airlines
Deal found 21/4$2,092
Wed 1/1019:59SEA - PER
2 stops35h 41mCathay Pacific
Mon 6/1000:10PER - SEA
2 stops31h 26mCathay Pacific
Deal found 20/4$2,198
Tue 1/717:15SEA - PER
2 stops31h 10mQantas Airways
Thu 28/810:30PER - SEA
2 stops27h 35mQantas Airways
Deal found 21/4$2,442
Wed 24/1212:32SEA - PER
2 stops35h 23mUnited Airlines
Mon 12/123:45PER - SEA
2 stops29h 31mUnited Airlines
Deal found 21/4$2,723

Cheapflights Fare Finder

Customise 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 647,157 searches. Data last updated 22 April 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

Sat 6/9

01:40-19:50

2 stops51h 10m

Perth

Sun 21/9

20:30-19:20

2 stops37h 50m

$1,844

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Wed 1/10

16:30-11:55

1 stop28h 25m

Perth

Tue 7/10

22:45-12:45

1 stop29h 00m

$1,976

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Wed 1/10

19:59-22:40

2 stops35h 41m

Perth

Mon 6/10

00:10-16:36

2 stops31h 26m

$2,198

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Wed 1/10

16:00-12:30

2 stops29h 30m

Perth

Mon 6/10

01:10-08:45

1 stop22h 35m

$2,246

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 1/7

17:15-15:25

2 stops31h 10m

Perth

Thu 28/8

10:30-23:05

2 stops27h 35m

$2,442

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 1/7

05:10-14:40

2 stops42h 30m

Perth

Tue 8/7

23:45-20:56

3 stops36h 11m

$2,731

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 15/7

16:30-04:30

2 stops45h 00m

$1,083

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Thu 5/6

16:30-18:40

1 stop35h 10m

$1,716

Flights are sorted by cheapest return flights first.

Deals found on 22/4

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 return 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 return flight from Seattle to Perth. Price data was last updated on 18 April 2025.

The best time to book flights from Seattle to Perth is 60 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 $298). Flying from Seattle to Perth in December is currently the most expensive (average of $409). 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.

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 - 170.0 inches per month. June is typically the wettest month, when rainfall can reach 170.0 mm. January is typically the driest time to visit Perth when rainfall is around 0.0 mm.

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 24.0 C. Travellers hoping to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 12.0 C).

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 22 April 2025.
Read through reviews of airlines operating flights from Seattle to Perth, such as Singapore Airlines, Cathay Pacific and Qantas Airways. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.1
Very Good
1,290 reviews
Check prices

Boarding

8.2

Comfort

7.9

Entertainment

8.0

Food

7.7

Crew

8.6

Overall

8.1

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
1,290 reviews
Singapore Airlines
8.1
Very Good
1,290 reviews
Check prices

Boarding

8.2

Comfort

7.9

Entertainment

8.0

Food

7.7

Crew

8.6

Overall

8.1

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
850 reviews
Singapore Airlines
8.1
Very Good
1,290 reviews
Check prices

Boarding

8.2

Comfort

7.9

Entertainment

8.0

Food

7.7

Crew

8.6

Overall

8.1

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
826 reviews
Singapore Airlines
8.1
Very Good
1,290 reviews
Check prices

Boarding

8.2

Comfort

7.9

Entertainment

8.0

Food

7.7

Crew

8.6

Overall

8.1

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
3,560 reviews
Singapore Airlines
8.1
Very Good
1,290 reviews
Check prices

Boarding

8.2

Comfort

7.9

Entertainment

8.0

Food

7.7

Crew

8.6

Overall

8.1

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.
United Airlines
7.4
Good
8,684 reviews
Singapore Airlines
8.1
Very Good
1,290 reviews
Check prices

Boarding

8.2

Comfort

7.9

Entertainment

8.0

Food

7.7

Crew

8.6

Overall

8.1

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?

    Our cheapest airline available from Seattle to Perth is Qatar Airways. Our recent data shows that you can find tickets from as low as $1,976 on this airline. Additional options worth looking into are Cathay Pacific and Singapore Airlines, starting at $2,198 and $2,246 round-trip. You may be able to fly from Seattle to Perth for 19% less than the average price by searching for these airlines.

  • 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 holiday 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 $298). Flying from Seattle to Perth in December is currently the most expensive (average of $409). 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

Travelling to a place near Seattle?

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

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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

Fly with Cheapflights

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How does Cheapflights help users find flights from Seattle to Perth?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Seattle to Perth. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Seattle to Perth?

Millions of users choose and trust Cheapflights to book the best flight deals from Seattle to Perth for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Seattle to Perth with no change fees?

Certainly. Search results for flights to Perth from Seattle shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Seattle to Perth become cheaper?

Of course! You can now track prices for flights from Seattle to Perth and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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