HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Perth

$597+ Cheap flights from Washington to Perth (PER)

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 2/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PER
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington to Perth with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Washington to Perth

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 December 18, 2025.

This Philippine Airlines deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Philippine Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/189:30 pmSEA - PER
1 stop41h 50mMultiple Airlines
Sat 1/38:40 amPER - SEA
2 stops28h 01mMultiple Airlines
Deal found 12/17$3,317

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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,098
(oojo)

One-way from

$597
(Kiwi.com)

Popular in

January

Cheapest in

September

Average price

$1,656
Provider with most accurate pricing for Seattle/Tacoma Intl-Perth flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Perth flights.
Search Deals
From Washington to Perth
Search Deals
One-way flight from Washington to Perth
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($122 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($44 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated December 18, 2025.
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 4/7

10:15 am-11:55 pm

1 stop22h 40m

Perth

Mon 4/27

1:10 am-8:45 am

1 stop22h 35m

$1,098

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 4/7

10:15 am-11:55 pm

1 stop22h 40m

Perth

Mon 4/27

1:10 am-6:54 pm

2 stops32h 44m

$1,190

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 4/7

7:55 pm-7:45 am

2 stops44h 50m

Perth

Mon 4/27

12:10 am-7:08 am

2 stops45h 58m

$1,226

PortlandPerth

PDX - PER

PDXPER

Portland

Sun 2/1

9:30 pm-6:55 am

2 stops41h 25m

Perth

Sun 2/8

8:30 am-9:35 am

2 stops41h 05m

$1,246

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sun 3/1

8:45 am-5:40 am

2 stops28h 55m

Perth

Fri 3/20

2:35 pm-9:00 am

2 stops33h 25m

$1,297

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sun 3/1

6:21 pm-10:55 pm

2 stops60h 34m

Perth

Thu 3/19

12:25 am-4:36 pm

2 stops31h 11m

$1,299

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sun 3/1

6:10 am-6:55 am

2 stops32h 45m

Perth

Thu 3/5

8:30 am-8:58 pm

2 stops28h 28m

$1,335

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Fri 1/30

7:52 pm-10:55 pm

2 stops59h 03m

Perth

Thu 2/5

12:25 am-2:19 pm

2 stops29h 54m

$1,347

PortlandPerth

PDX - PER

PDXPER

Portland

Mon 1/26

5:50 pm-9:00 pm

2 stops35h 10m

Perth

Mon 2/9

3:55 pm-1:41 pm

2 stops37h 46m

$1,390

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sun 3/1

4:05 pm-6:45 pm

1 stop34h 40m

Perth

Thu 3/5

3:55 pm-11:40 am

1 stop35h 45m

$1,416

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 24 results
1
2
3

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 round-trip 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 $994). Flying from State of Washington to Perth in January is currently the most expensive (average of $1,488). 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.

What is the cheapest time of day to fly from WA to PER?

Find hourly flight availability from Washington to Perth. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

When flying from State of Washington to Perth, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 26% versus a flight at noon.

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?

    Located just 6.3 mi from the city center, Perth (PER) is the airport most travelers will use when flying to Perth from Washington.

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

    Singapore Airlines, Cathay Pacific, and Qantas Airways can get you from State of Washington to Perth in just under 22h 40m. Your travel time can differ by up to 22h 10m. Airlines will cover a distance of 9235 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    While some choose either Portland - Perth or Spokane - Perth, Seattle/Tacoma Intl - Perth is the most popular 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 vacation 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 $994). Flying from State of Washington to Perth in January is currently the most expensive (average of $1,488). 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

Traveling to a place near Perth?

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Washington to Perth

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Perth flights
Hobby to Perth flights
Dulles Intl to Perth flights
Newark to Perth flights
Reagan-National to Perth flights
LaGuardia to Perth flights
Dallas/Fort Worth to Perth flights
Sky Harbor Intl to Perth flights
San Francisco to Perth flights
George Bush Intcntl to Perth flights
Los Angeles to Perth flights
Baltimore to Perth flights
Boston to Perth flights
Seattle to Perth flights
Minneapolis to Perth flights
O'Hare Intl to Perth flights
Ontario to Perth flights
Burbank to Perth flights
Denver to Perth flights
Orlando to Perth flights
San Jose to Perth flights
Portland to Perth flights
Santa Ana to Perth flights
Nashville to Perth flights
Salt Lake City to Perth flights
Raleigh to Perth flights
Cleveland to Perth flights
Atlanta to Perth flights
Detroit to Perth flights
Charlotte to Perth flights
Columbus to Perth flights
Miami to Perth flights
Indianapolis to Perth flights
Honolulu to Perth flights
Las Vegas to Perth flights
Oakland to Perth flights
Pittsburgh to Perth flights
San Diego to Perth flights
Philadelphia to Perth flights
Sacramento to Perth flights
St. Louis to Perth flights
Louisville to Perth flights
Richmond to Perth flights
Tampa to Perth flights
Birmingham to Perth flights
West Palm Beach to Perth flights
Des Moines to Perth flights
Memphis to Perth flights
Honolulu to Broome flights
Harrisburg to Perth flights

Top 3 airlines flying from Washington to Perth

Discover the top 3 airlines that operate flights from Washington to Perth. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$1,251Average$1,490FlexibilityNo cancel feeOn-time81%
Qantas AirwaysCheapest$1,258Average$1,451FlexibilityNo cancel feeOn-time74%
Qatar AirwaysCheapest$1,325Average$1,714FlexibilityNo cancel feeOn-time68%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.