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Cheap flights from Washington to Perth from $859

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 4/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PER
12 Jun — 19 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Washington to Perth

Enter your travel dates to find the best prices.

Cheapest flights from Washington to Perth
Explore the most affordable flight options available from Washington to Perth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 May 2026.

Mon 17/816:25
SEA
-
PER
1 stop35h 10m
Qatar Airways
Mon 14/922:45
PER
-
SEA
1 stop28h 40m
Qatar Airways
Deal found 11/5$1,730
Sun 4/1009:28
PDX
-
PER
2 stops42h 07m
Multiple Airlines
Mon 12/1022:45
PER
-
PDX
2 stops36h 09m
Multiple Airlines
Deal found 13/5$1,753
Mon 17/816:25
SEA
-
PER
1 stop35h 10m
Multiple Airlines
Mon 14/922:45
PER
-
SEA
2 stops37h 58m
Multiple Airlines
Deal found 12/5$1,755
Thu 3/910:15
SEA
-
PER
1 stop27h 55m
Singapore Airlines
Sat 3/1013:45
PER
-
SEA
1 stop34h 00m
Singapore Airlines
Deal found 13/5$1,776
Thu 1/1016:25
SEA
-
PER
1 stop35h 10m
Qatar Airways
Mon 5/1022:45
PER
-
SEA
1 stop28h 40m
Qatar Airways
Deal found 11/5$1,790
Thu 11/617:05
SEA
-
PER
1 stop28h 10m
Qatar Airways
Wed 17/622:45
PER
-
SEA
1 stop28h 40m
Qatar Airways
Deal found 11/5$1,802
Fri 2/1013:59
PDX
-
PER
2 stops37h 36m
Multiple Airlines
Tue 13/1022:45
PER
-
PDX
2 stops35h 10m
Multiple Airlines
Deal found 12/5$1,808
Thu 1/1016:25
SEA
-
PER
1 stop35h 10m
Multiple Airlines
Mon 5/1022:45
PER
-
SEA
2 stops36h 11m
Multiple Airlines
Deal found 11/5$1,829
Mon 1/617:05
SEA
-
PER
1 stop28h 10m
Qatar Airways
Tue 30/622:45
PER
-
SEA
1 stop28h 40m
Qatar Airways
Deal found 9/5$1,836
Sun 1/1116:05
SEA
-
PER
1 stop34h 40m
Qatar Airways
Thu 5/1122:45
PER
-
SEA
1 stop28h 55m
Qatar Airways
Deal found 8/5$1,852
Sat 3/1012:18
PDX
-
PER
2 stops39h 17m
Multiple Airlines
Mon 12/1022:45
PER
-
PDX
2 stops33h 15m
Multiple Airlines
Deal found 12/5$1,860
Tue 9/619:45
PDX
-
PER
2 stops26h 10m
Multiple Airlines
Wed 15/722:40
PER
-
PDX
2 stops25h 51m
Multiple Airlines
Deal found 10/5$1,878

Find flight deals from Washington to Perth

Keep the following information in mind while searching for Washington to Perth flight deals. Data was last updated 13 May 2026.

Round-trip from

$1,730

One-way from

$859

Popular in

November

Cheapest in

August

Average price

$2,007
Qatar Airways
  • Qatar Airways
  • 17/8-14/9
  • 2 total stops
  • 63h 50m total
  • Washington to Perth
Search Deals
Philippine Airlines
  • Philippine Airlines
  • 4/9
  • 1 total stop
  • 41h 05m total
  • Washington to Perth
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($430 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($50 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Washington 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 13 May 2026.
Use the filters below to find and compare flights from Washington to Perth that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Mon 17/8

16:25-18:35

1 stop35h 10m

Perth

Mon 14/9

22:45-12:25

1 stop28h 40m

$1,735

PortlandPerth

PDX - PER

PDXPER

Portland

Sun 4/10

12:18-18:35

2 stops39h 17m

Perth

Mon 12/10

22:45-18:55

2 stops35h 10m

$1,753

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sun 1/11

16:05-18:45

1 stop34h 40m

Perth

Thu 5/11

22:45-11:40

1 stop28h 55m

$1,852

PortlandPerth

PDX - PER

PDXPER

Portland

Mon 22/6

09:19-18:35

2 stops42h 16m

Perth

Mon 29/6

22:45-23:59

2 stops40h 14m

$1,920

PortlandPerth

PDX - PER

PDXPER

Portland

Tue 27/10

12:18-18:45

2 stops39h 27m

Perth

Sat 31/10

22:45-23:59

2 stops40h 14m

$1,959

PortlandPerth

PDX - PER

PDXPER

Portland

Sat 3/10

05:06-18:35

2 stops46h 29m

Perth

Tue 13/10

22:45-21:59

2 stops38h 14m

$1,959
Fastest return journey

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Mon 1/6

19:05-12:30

2 stops26h 25m

Perth

Tue 30/6

23:45-21:10

3 stops36h 25m

$2,072

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 9/6

13:30-14:40

2 stops34h 10m

Perth

Tue 16/6

15:30-21:10

3 stops44h 40m

$2,072

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Mon 17/8

16:25-01:10

2 stops41h 45m

Perth

Mon 14/9

22:45-19:07

2 stops35h 22m

$2,078

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sat 1/8

08:45-12:30

2 stops36h 45m

Perth

Sun 9/8

23:55-21:10

3 stops36h 15m

$2,151

Flights are sorted by cheapest return flights first.

Deals found on 12/5

Showing 1-10 of 33 resultsSorted by cheapest first
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Best time to book a flight from Washington to Perth

Have a flexible travel schedule? Discover the best time to fly to Perth from Washington 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 Washington to Perth

What is the cheapest month to book a flight from State of Washington to Perth?

Currently, October is the cheapest month in which you can book a flight from State of Washington to Perth (average of $1,602). Flying from State of Washington to Perth in January is currently the most expensive (average of $2,044). 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.

How much does it cost for a return flight from State of Washington to Perth?

Related info for your journey

Find useful and relevant information for your journey from Washington to Perth. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Perth from Washington?

    Most people fly into Perth (PER) if they book a flight to Perth from Washington. Perth is conveniently located just 10.2 km from Perth’s city centre.

  • How long is the flight from State of Washington to Perth?

    Qatar Airways can get you from State of Washington to Perth in just under 35h 10m. Your travel time can differ by up to . There are 14862 km between State of Washington and Perth.

  • What are the most popular routes from State of Washington to Perth?

    Most travellers choose Seattle/Tacoma Intl - Perth, Portland - Perth or Spokane - Perth when deciding on the best route from State of Washington to Perth.

  • Can I find deals for flights from Washington to Perth that include hotel bookings?

    Yes. In addition to deals on Washington to Perth flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Washington to Perth?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Perth.

  • Can I find deals for business class flights from Washington to Perth?

    Yes. Cheapflights offers flight deals from Washington 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 State of Washington to Perth?

    Currently, October is the cheapest month in which you can book a flight from State of Washington to Perth (average of $1,602). Flying from State of Washington to Perth in January is currently the most expensive (average of $2,044). 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 Perth?

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

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Perth from Washington.

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

Yes, we can. To see specific flights from Washington to Perth with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Perth from Washington today and book when prices fit your budget.

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