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Cheap flights from Washington to Perth from $854

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 27/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PER
16 Sep — 23 Sep1
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 17 August 2026.

Mon 24/812:25 -
1 stop27h 25m
Tue 8/908:20 -
1 stop41h 00m
Deal found 16/8$1,641
Mon 14/912:25 -
1 stop27h 25m
Tue 22/908:20 -
1 stop40h 45m
Deal found 17/8$1,643
Mon 26/1000:10 -
2 stops49h 15m
Mon 23/1121:10 -
1 stop26h 00m
Deal found 15/8$1,657
Mon 17/812:25 -
1 stop43h 15m
Mon 14/908:20 -
1 stop41h 00m
Deal found 13/8$1,676
Mon 26/1011:50 -
1 stop44h 05m
Mon 23/1108:30 -
1 stop40h 40m
Deal found 17/8$1,707
Tue 20/1011:45 -
1 stop28h 05m
Tue 24/1108:30 -
1 stop40h 40m
Deal found 14/8$1,709
Wed 21/1016:30 -
2 stops36h 20m
Mon 23/1121:10 -
1 stop26h 00m
Deal found 15/8$1,713
Fri 23/1000:10 -
2 stops49h 15m
Mon 23/1121:10 -
1 stop26h 00m
Deal found 15/8$1,717
Mon 26/1000:10 -
2 stops49h 15m
Tue 24/1121:10 -
1 stop26h 00m
Deal found 14/8$1,723
Thu 12/1119:10 -
2 stops27h 20m
Thu 11/322:30 -
2 stops26h 55m
Deal found 16/8$1,856
Thu 22/1015:48 -
2 stops59h 57m
Sun 13/1222:45 -
2 stops32h 10m
Deal found 13/8$1,931
Mon 30/1106:00 -
2 stops32h 55m
Tue 15/1208:30 -
2 stops48h 51m
Deal found 13/8$1,966

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 17 August 2026.

Round-trip from

$1,643

One-way from

$854

Popular in

August

Cheapest in

June

Average price

$2,578
Cathay Pacific
  • Cathay Pacific
  • 14/9-22/9
  • 2 total stops
  • 68h 10m total
  • Washington to Perth
Search Deals
27/9
  • 27/9
  • 2 total stops
  • 46h 20m total
  • Washington to Perth
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($407 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($69 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 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 17 August 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 Seattle/Tacoma Intl - PER Perth

SEAPER

Seattle/Tacoma Intl

Fri 23/10

06:10-06:50

2 stops33h 40m

Perth

Sun 22/11

00:25-09:10

1 stop24h 45m

$1,838

SeattlePerth

SEA Seattle/Tacoma Intl - PER Perth

SEAPER

Seattle/Tacoma Intl

Mon 8/2

06:00-06:55

2 stops32h 55m

Perth

Mon 15/2

08:30-09:10

1 stop40h 40m

$1,840

PortlandPerth

PDX Portland - PER Perth

PDXPER

Portland

Thu 12/11

19:10-14:30

2 stops27h 20m

Perth

Thu 11/3

22:30-09:25

2 stops26h 55m

$1,856

SeattlePerth

SEA Seattle/Tacoma Intl - PER Perth

SEAPER

Seattle/Tacoma Intl

Fri 4/9

21:25-22:40

2 stops34h 15m

Perth

Sun 13/9

00:10-15:32

2 stops30h 22m

$1,904

SpokanePerth

GEG Spokane - PER Perth

GEGPER

Spokane

Mon 30/11

06:00-06:55

2 stops32h 55m

Perth

Tue 15/12

08:30-17:21

2 stops48h 51m

$1,966

SpokanePerth

GEG Spokane - PER Perth

GEGPER

Spokane

Sun 13/9

20:39-22:40

2 stops59h 01m

Perth

Sun 20/9

08:20-13:45

2 stops44h 25m

$2,001

PortlandPerth

PDX Portland - PER Perth

PDXPER

Portland

Mon 28/9

07:03-06:50

2 stops32h 47m

Perth

Sun 4/10

00:10-13:24

2 stops28h 14m

$2,015

PortlandPerth

PDX Portland - PER Perth

PDXPER

Portland

Wed 21/10

10:10-14:45

2 stops37h 35m

Perth

Sun 25/10

22:30-09:26

2 stops25h 56m

$2,056

SeattlePerth

SEA Seattle/Tacoma Intl - PER Perth

SEAPER

Seattle/Tacoma Intl

Fri 22/1

15:53-06:55

2 stops47h 02m

Perth

Tue 16/2

08:30-09:10

1 stop40h 40m

$2,062

PortlandPerth

PDX Portland - PER Perth

PDXPER

Portland

Sun 4/10

07:03-06:50

2 stops32h 47m

Perth

Sun 11/10

00:10-13:24

2 stops28h 14m

$2,087

Flights are sorted by cheapest return flights first.

Deals found on 13/8

Showing 1-10 of 37 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

No data available for this route at this time. Please check back soon.

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?

    Air Canada, Cathay Pacific, and Qatar Airways can get you from State of Washington to Perth in just under 27h 20m. Your travel time can differ by up to 19h 42m. There are 14828 km between State of Washington and Perth. Both multi-stop and direct flights can be found to your destination and back.

  • 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.

See more FAQs

Travelling to a place near Perth?

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

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

When you search for this flight from Washington to Perth, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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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