Cheap flights from Washington to Perth from $895

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 14/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PER
17 Oct — 24 Oct1
1 adult
1 adult, Economy

Cheap 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 September 2025.

Round-trip from

$1,525

One-way from

$895

Popular in

January

Cheapest in

February

Average price

$2,188
22/10-30/10
  • 22/10-30/10
  • 4 total stops
  • 85h 58m total
  • Washington to Perth
14/10
  • 14/10
  • 3 total stops
  • 36h 00m total
  • Washington to Perth
Highest demand for flights based on searches. 6% potential increase in price ($251 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease ($71 potential savings vs. average return price).
Average for round-trip flights in September 2025

Find 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 17 September 2025.

Wed 22/1007:00SEA - PER
2 stops38h 10mMultiple Airlines
Thu 30/1023:35PER - SEA
2 stops47h 48mMultiple Airlines
Deal found 17/9$1,525
Thu 30/1012:00SEA - PER
2 stops29h 50mMultiple Airlines
Thu 6/1123:35PER - SEA
1 stop23h 35mMultiple Airlines
Deal found 15/9$1,656
Thu 6/1108:45SEA - PER
1 stop35h 50mSingapore Airlines
Thu 27/1106:40PER - SEA
1 stop40h 30mSingapore Airlines
Deal found 16/9$1,711
Thu 30/1020:00SEA - PER
2 stops33h 10mAir Canada
Thu 6/1122:30PER - SEA
2 stops27h 01mAir Canada
Deal found 15/9$1,801
Tue 14/1001:30SEA - PER
3 stops36h 00mMultiple Airlines
Wed 22/1021:55PER - SEA
1 stop25h 50mMultiple Airlines
Deal found 15/9$1,840
Thu 23/1015:46SEA - PER
2 stops27h 34mMultiple Airlines
Tue 11/1122:55PER - SEA
2 stops30h 07mMultiple Airlines
Deal found 15/9$1,891
Thu 23/1015:46SEA - PER
2 stops27h 34mMultiple Airlines
Thu 13/1108:00PER - SEA
2 stops26h 57mMultiple Airlines
Deal found 16/9$1,892
Thu 13/1122:28PDX - PER
2 stops33h 27mMultiple Airlines
Wed 3/1217:05PER - PDX
2 stops33h 45mMultiple Airlines
Deal found 15/9$2,012
Fri 31/1014:30PDX - PER
2 stops37h 15mQatar Airways
Fri 7/1122:45PER - PDX
2 stops35h 02mQatar Airways
Deal found 16/9$2,039
Tue 16/913:24PDX - PER
2 stops31h 31mQatar Airways
Wed 24/922:45PER - PDX
2 stops46h 32mQatar Airways
Deal found 14/9$2,071
Tue 16/917:36PDX - PER
2 stops26h 44mQantas Airways
Wed 24/910:30PER - PDX
2 stops23h 40mQantas Airways
Deal found 15/9$2,072
Mon 24/1117:44PDX - PER
2 stops29h 01mMultiple Airlines
Tue 31/313:45PER - PDX
2 stops34h 47mMultiple Airlines
Deal found 14/9$2,200

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 September 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

Wed 22/10

07:00-12:10

2 stops38h 10m

Perth

Thu 30/10

23:35-08:23

2 stops47h 48m

$1,525

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Thu 30/10

09:45-04:20

1 stop27h 35m

Perth

Thu 6/11

05:35-07:10

1 stop41h 35m

$1,795

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Thu 23/10

15:46-10:20

2 stops27h 34m

Perth

Tue 11/11

22:55-13:02

2 stops30h 07m

$1,891

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Thu 23/10

15:46-10:20

2 stops27h 34m

Perth

Thu 13/11

08:00-18:57

2 stops26h 57m

$1,892

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Thu 6/11

08:45-23:55

1 stop23h 10m

Perth

Wed 26/11

01:15-07:10

1 stop21h 55m

$1,900

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Thu 23/10

16:30-18:40

1 stop35h 10m

Perth

Tue 11/11

22:45-11:40

1 stop28h 55m

$1,930

PortlandPerth

PDX - PER

PDXPER

Portland

Fri 31/10

14:30-18:45

2 stops37h 15m

Perth

Fri 7/11

22:45-17:47

2 stops35h 02m

$2,039

PortlandPerth

PDX - PER

PDXPER

Portland

Thu 13/11

09:34-12:00

2 stops34h 26m

Perth

Wed 3/12

22:45-17:55

2 stops35h 10m

$2,072

PortlandPerth

PDX - PER

PDXPER

Portland

Mon 24/11

17:44-14:45

2 stops29h 01m

Perth

Tue 31/3

13:45-09:32

2 stops34h 47m

$2,200

PortlandPerth

PDX - PER

PDXPER

Portland

Tue 14/10

13:25-18:40

2 stops38h 15m

Perth

Tue 4/11

22:45-20:37

2 stops37h 52m

$2,234

Flights are sorted by cheapest return flights first.

Deals found on 16/9

Showing 1-10 of 18 results
1
2

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, May is the cheapest month in which you can book a flight from State of Washington to Perth (average of $286). Flying from State of Washington to Perth in December is currently the most expensive (average of $409). 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?

    Qatar Airways and United Airlines can get you from State of Washington to Perth in just under 35h 10m. Your travel time can differ by up to 2h 05m. There are 15220 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?

  • 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, May is the cheapest month in which you can book a flight from State of Washington to Perth (average of $286). Flying from State of Washington to Perth in December is currently the most expensive (average of $409). 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
Mandurah
Fremantle
Rottnest Island

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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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