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Cheap flights from Seattle to Perth from $806

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 15/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PER
26 Feb — 5 Mar1
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 21 February 2025.

Round-trip from

$1,869

One-way from

$806

Popular in

July

Cheapest in

February

Average price

$2,073
Air Canada
  • Air Canada
  • 26/5-30/6
  • 4 total stops
  • 59h 01m total
  • Seattle to Perth
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15/4
  • 15/4
  • 1 total stop
  • 43h 25m total
  • Seattle to Perth
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($540 potential increase over avg. return price).
Search Deals
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 February 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 21 February 2025.

Sat 27/910:15SEA - PER
1 stop35h 15mSingapore Airlines
Mon 13/1001:10PER - SEA
1 stop22h 35mSingapore Airlines
Deal found 20/2$1,801
Mon 26/514:55SEA - PER
2 stops34h 15mAir Canada
Mon 30/623:35PER - SEA
2 stops24h 46mAir Canada
Deal found 20/2$1,869
Sun 6/410:15SEA - PER
1 stop39h 55mMultiple Airlines
Sun 13/423:35PER - SEA
2 stops31h 35mMultiple Airlines
Deal found 20/2$1,982
Mon 17/317:05SEA - PER
1 stop34h 40mQatar Airways
Mon 7/422:45PER - SEA
2 stops35h 16mQatar Airways
Deal found 20/2$2,040
Fri 11/417:05SEA - PER
2 stops30h 35mUnited Airlines
Sat 26/417:15PER - SEA
2 stops33h 34mUnited Airlines
Deal found 20/2$2,262
Mon 17/307:00SEA - PER
2 stops35h 35mCathay Pacific
Sun 6/400:10PER - SEA
2 stops37h 44mCathay Pacific
Deal found 20/2$2,454

Find flights from Seattle to Perth within your budget

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 21 February 2025.

Fly from

Seattle

Fly to

Perth

Route

Depart

Return

Price

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Mon 26/5

14:55-16:10

2 stops34h 15m

Perth

Mon 30/6

23:35-09:21

2 stops24h 46m

$1,869

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sun 6/4

10:15-17:10

1 stop39h 55m

Perth

Sun 13/4

23:35-16:10

2 stops31h 35m

$1,982

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Mon 17/3

17:05-18:45

1 stop34h 40m

Perth

Mon 7/4

22:45-19:01

2 stops35h 16m

$2,040

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Fri 11/4

17:05-14:40

2 stops30h 35m

Perth

Sat 26/4

17:15-11:49

2 stops33h 34m

$2,262

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Thu 20/3

09:40-23:55

1 stop23h 15m

Perth

Thu 27/3

13:50-09:55

2 stops35h 05m

$2,383

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Mon 17/3

07:00-09:35

2 stops35h 35m

Perth

Sun 6/4

00:10-22:54

2 stops37h 44m

$2,454

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 15/4

10:15-20:40

1 stop43h 25m

$806

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sun 6/4

05:45-17:00

2 stops44h 15m

$1,234

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sun 6/4

10:15-12:30

1 stop35h 15m

$1,322

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Thu 10/4

13:40-12:15

3 stops31h 35m

$2,703

Flights are sorted by cheapest return flights first.

Deals found on 20/2

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.

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 return flight from Seattle to Perth. Price data was last updated on 14 February 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, July is the cheapest month in which you can book a flight from Seattle to Perth (average of $302). 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 21 February 2025.
Singapore Airlines
8.1
Very Good
1,299 reviews
Check prices

Comfort

7.9

Food

7.7

Entertainment

8.0

Overall

8.1

Crew

8.6

Boarding

8.2

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
1,299 reviews
Singapore Airlines
8.1
Very Good
1,299 reviews
Check prices

Comfort

7.9

Food

7.7

Entertainment

8.0

Overall

8.1

Crew

8.6

Boarding

8.2

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.

Alaska Airlines
8.0
Very Good
9,697 reviews
Singapore Airlines
8.1
Very Good
1,299 reviews
Check prices

Comfort

7.9

Food

7.7

Entertainment

8.0

Overall

8.1

Crew

8.6

Boarding

8.2

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
821 reviews
Singapore Airlines
8.1
Very Good
1,299 reviews
Check prices

Comfort

7.9

Food

7.7

Entertainment

8.0

Overall

8.1

Crew

8.6

Boarding

8.2

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
3,609 reviews
Singapore Airlines
8.1
Very Good
1,299 reviews
Check prices

Comfort

7.9

Food

7.7

Entertainment

8.0

Overall

8.1

Crew

8.6

Boarding

8.2

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
8,759 reviews
Singapore Airlines
8.1
Very Good
1,299 reviews
Check prices

Comfort

7.9

Food

7.7

Entertainment

8.0

Overall

8.1

Crew

8.6

Boarding

8.2

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 Air Canada. Our recent data shows that you can find tickets from as low as $1,869 on this airline. Additional options worth looking into are Qatar Airways and United Airlines, starting at $2,040 and $2,262 round-trip. You may be able to fly from Seattle to Perth for 27% less than the average price by searching for these airlines.

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

    $1,234 is the cheapest one-way deal found within the past few days, from Air Canada. You may also be able to find cheap deals on Singapore Airlines and Alaska Airlines, with prices starting from $1,322 and $2,703, respectively.

  • 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, July is the cheapest month in which you can book a flight from Seattle to Perth (average of $302). 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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