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Cheap flights from Washington to Perth from $935

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 8/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PER
4 Mar — 11 Mar1
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 2 February 2026.

Mon 17/812:25
SEA
-
PER
1 stop43h 15m
Cathay Pacific
Mon 14/908:20
PER
-
SEA
1 stop41h 00m
Cathay Pacific
Deal found 1/2$1,416
Tue 7/411:45
SEA
-
PER
1 stop28h 05m
Cathay Pacific
Mon 27/400:10
PER
-
SEA
1 stop24h 55m
Cathay Pacific
Deal found 1/2$1,420
Mon 7/912:25
SEA
-
PER
1 stop43h 15m
Cathay Pacific
Tue 6/1008:20
PER
-
SEA
1 stop40h 45m
Cathay Pacific
Deal found 2/2$1,524
Sun 5/408:41
SEA
-
PER
2 stops55h 09m
Cathay Pacific
Sun 19/408:20
PER
-
SEA
1 stop40h 45m
Cathay Pacific
Deal found 1/2$1,545
Thu 3/912:25
SEA
-
PER
1 stop43h 15m
Cathay Pacific
Sat 3/1008:20
PER
-
SEA
2 stops37h 52m
Cathay Pacific
Deal found 2/2$1,591
Sun 1/308:45
SEA
-
PER
1 stop27h 30m
Multiple Airlines
Sat 14/307:35
PER
-
SEA
2 stops26h 35m
Multiple Airlines
Deal found 1/2$1,714
Wed 4/313:36
PDX
-
PER
2 stops30h 19m
Qatar Airways
Wed 11/322:45
PER
-
PDX
2 stops32h 03m
Qatar Airways
Deal found 2/2$1,915
Wed 18/1113:50
PDX
-
PER
2 stops36h 55m
Qatar Airways
Thu 3/1215:55
PER
-
PDX
2 stops39h 00m
Qatar Airways
Deal found 1/2$1,941
Fri 20/207:05
PDX
-
PER
2 stops36h 50m
Multiple Airlines
Fri 27/215:55
PER
-
PDX
2 stops47h 49m
Multiple Airlines
Deal found 31/1$2,039
Sun 15/210:48
PDX
-
PER
2 stops39h 27m
Qantas Airways
Wed 18/222:45
PER
-
PDX
2 stops34h 28m
Qantas Airways
Deal found 1/2$2,271
Sun 15/221:19
PDX
-
PER
2 stops46h 36m
Qatar Airways
Wed 18/222:45
PER
-
PDX
2 stops39h 56m
Qatar Airways
Deal found 2/2$2,318
Thu 19/318:12
GEG
-
PER
2 stops36h 28m
Multiple Airlines
Thu 26/322:45
PER
-
GEG
2 stops37h 27m
Multiple Airlines
Deal found 2/2$2,399

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 2 February 2026.

Round-trip from

$1,420

One-way from

$935

Popular in

November

Cheapest in

February

Average price

$1,810
Cathay Pacific
  • Cathay Pacific
  • 7/4-27/4
  • 2 total stops
  • 53h 00m total
  • Washington to Perth
Search Deals
8/7
  • 8/7
  • 3 total stops
  • 49h 25m total
  • Washington to Perth
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($381 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($48 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 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 2 February 2026.
Use the filters below to find and compare flights from Washington to Perth that are best for you.

Fly from

Washington

Fly to

Perth

Route

Depart

Return

Price

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 7/4

11:45-06:50

1 stop28h 05m

Perth

Mon 27/4

00:10-10:05

1 stop24h 55m

$1,420

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sun 5/4

08:41-06:50

2 stops55h 09m

Perth

Sun 19/4

08:20-08:47

2 stops39h 27m

$1,685

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 7/4

10:15-05:10

1 stop27h 55m

Perth

Mon 27/4

01:10-08:45

1 stop22h 35m

$1,797

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sun 1/3

08:45-04:30

2 stops27h 45m

Perth

Fri 13/3

01:40-19:10

3 stops32h 30m

$1,814

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Thu 9/4

11:45-06:50

1 stop28h 05m

Perth

Sat 18/4

08:20-15:52

2 stops46h 32m

$1,855

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 7/4

10:15-12:30

1 stop35h 15m

Perth

Mon 27/4

01:10-14:42

2 stops28h 32m

$1,863

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 17/3

09:45-12:35

1 stop35h 50m

Perth

Mon 23/3

01:15-08:10

1 stop21h 55m

$1,892

PortlandPerth

PDX - PER

PDXPER

Portland

Wed 4/3

13:36-11:55

2 stops30h 19m

Perth

Wed 11/3

22:45-15:48

2 stops32h 03m

$1,915

PortlandPerth

PDX - PER

PDXPER

Portland

Fri 20/2

07:05-11:55

2 stops36h 50m

Perth

Fri 27/2

15:55-23:44

2 stops47h 49m

$2,039

PortlandPerth

PDX - PER

PDXPER

Portland

Sun 15/2

10:48-18:15

2 stops39h 27m

Perth

Wed 18/2

22:45-17:13

2 stops34h 28m

$2,271

Flights are sorted by cheapest return flights first.

Deals found on 1/2

Showing 1-10 of 21 results
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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, February is the cheapest month in which you can book a flight from State of Washington to Perth (average of $1,383). Flying from State of Washington to Perth in January is currently the most expensive (average of $2,131). 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.

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?

    Cathay Pacific, Qatar Airways, and Qantas Airways can get you from State of Washington to Perth in just under 28h 05m. Your travel time can differ by up to 11h 22m. There are 14862 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, Spokane - Perth or Portland - 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, February is the cheapest month in which you can book a flight from State of Washington to Perth (average of $1,383). Flying from State of Washington to Perth in January is currently the most expensive (average of $2,131). 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
Scarborough
Fremantle
Rottnest Island
Mandurah

Browse thousands of different options on Cheapflights for your next trip

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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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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