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Cheap flights from Washington to Perth from $815

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 31/8. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PER
25 Apr — 2 May1
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 26 March 2026.

Tue 1/910:15
SEA
-
PER
1 stop27h 05m
Multiple Airlines
Sun 13/920:50
PER
-
SEA
2 stops37h 55m
Multiple Airlines
Deal found 25/3$1,656
Thu 3/910:15
SEA
-
PER
1 stop27h 55m
Singapore Airlines
Sat 3/1016:55
PER
-
SEA
1 stop30h 50m
Singapore Airlines
Deal found 25/3$1,673
Tue 1/910:15
SEA
-
PER
1 stop27h 05m
Multiple Airlines
Tue 15/920:50
PER
-
SEA
2 stops34h 20m
Multiple Airlines
Deal found 25/3$1,689
Tue 1/910:15
SEA
-
PER
1 stop27h 05m
Multiple Airlines
Sat 12/920:50
PER
-
SEA
2 stops34h 20m
Multiple Airlines
Deal found 25/3$1,696
Tue 1/910:15
SEA
-
PER
1 stop27h 05m
Multiple Airlines
Thu 10/922:55
PER
-
SEA
2 stops31h 00m
Multiple Airlines
Deal found 25/3$1,719
Sun 30/810:15
SEA
-
PER
1 stop35h 15m
Singapore Airlines
Sat 12/901:10
PER
-
SEA
1 stop22h 35m
Singapore Airlines
Deal found 25/3$1,748
Thu 27/810:15
SEA
-
PER
1 stop27h 05m
Multiple Airlines
Sun 13/920:50
PER
-
SEA
2 stops37h 55m
Multiple Airlines
Deal found 25/3$1,776
Tue 25/807:00
PDX
-
PER
2 stops31h 10m
Multiple Airlines
Mon 31/813:45
PER
-
PDX
2 stops34h 40m
Multiple Airlines
Deal found 23/3$1,789
Tue 5/501:15
SEA
-
PER
2 stops48h 55m
Multiple Airlines
Wed 13/518:25
PER
-
SEA
2 stops39h 50m
Multiple Airlines
Deal found 22/3$1,797
Mon 17/817:12
SEA
-
PER
2 stops30h 28m
Multiple Airlines
Mon 14/906:25
PER
-
SEA
1 stop41h 20m
Multiple Airlines
Deal found 24/3$1,806
Wed 21/1007:00
PDX
-
PER
2 stops31h 10m
Multiple Airlines
Tue 3/1101:15
PER
-
PDX
2 stops28h 35m
Multiple Airlines
Deal found 25/3$1,846
Sun 4/1010:40
PDX
-
PER
2 stops40h 55m
Multiple Airlines
Mon 12/1022:45
PER
-
PDX
2 stops32h 52m
Multiple Airlines
Deal found 26/3$1,927

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 26 March 2026.

Round-trip from

$1,656

One-way from

$815

Popular in

October

Cheapest in

February

Average price

$1,943
1/9-13/9
  • 1/9-13/9
  • 3 total stops
  • 65h 00m total
  • Washington to Perth
Search Deals
31/8
  • 31/8
  • 3 total stops
  • 48h 13m total
  • Washington to Perth
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($111 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($34 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 26 March 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

Thu 3/9

10:15-05:10

1 stop27h 55m

Perth

Fri 2/10

01:10-16:56

2 stops30h 46m

$1,888

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

$1,904

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Mon 17/8

16:17-14:40

2 stops31h 23m

Perth

Sun 13/9

01:10-18:56

2 stops32h 46m

$1,950

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Thu 7/5

07:10-06:50

2 stops32h 40m

Perth

Thu 14/5

08:20-22:44

2 stops29h 24m

$2,145

SpokanePerth

GEG - PER

GEGPER

Spokane

Thu 13/8

12:45-17:00

2 stops37h 15m

Perth

Mon 17/8

23:45-22:18

2 stops37h 33m

$2,508

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 21/4

19:37-14:40

2 stops28h 03m

Perth

Tue 28/4

23:55-21:06

3 stops36h 11m

$2,537

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Thu 7/5

19:36-12:30

2 stops25h 54m

Perth

Thu 14/5

23:45-21:06

3 stops36h 21m

$2,681

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Fri 1/5

19:36-12:30

2 stops25h 54m

Perth

Sat 16/5

13:15-21:06

3 stops46h 51m

$2,762

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Fri 24/4

13:45-12:30

2 stops31h 45m

Perth

Sun 26/4

01:10-20:25

3 stops34h 15m

$4,331

PortlandPerth

PDX - PER

PDXPER

Portland

Thu 7/5

13:05-01:15

3 stops45h 10m

Perth

Thu 14/5

21:00-11:10

3 stops53h 10m

$4,422

Flights are sorted by cheapest return flights first.

Deals found on 23/3

Showing 1-10 of 31 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 $1,685). Flying from State of Washington to Perth in January is currently the most expensive (average of $2,137). 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, Qantas Airways, and United Airlines can get you from State of Washington to Perth in just under 28h 03m. Your travel time can differ by up to 9h 12m. 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, 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 $1,685). Flying from State of Washington to Perth in January is currently the most expensive (average of $2,137). 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

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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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