$979 Cheap Flights from Perth (PER) to Washington (IAD)

View $979 flight on Thu, Nov 26, 2026Opens in a new window

Popular airlines from Perth Airport (PER) to Washington Dulles Intl. Airport (IAD)

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Cheap Flights from Perth to Washington (PER-IAD)

Prices were available within the past 7 days and start at $979 for one-way flights and $1,641 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, Mar 23 - Tue, Mar 31
PER
Perth
IAD
Washington
$1,641 Roundtrip, found 6 days ago
$1,641
Roundtrip
found 6 days ago
Select United flight, departing Mon, Mar 23 from Perth to Washington, returning Tue, Mar 31, priced at $1,641 found 6 days ago
United
Sat, Mar 21 - Tue, Mar 31
PER
Perth
IAD
Washington
$1,669 Roundtrip, found 4 days ago
$1,669
Roundtrip
found 4 days ago
Select United flight, departing Sat, Mar 21 from Perth to Washington, returning Tue, Mar 31, priced at $1,669 found 4 days ago
United
Mon, Mar 23 - Fri, Apr 3
PER
Perth
IAD
Washington
$1,696 Roundtrip, found 6 days ago
$1,696
Roundtrip
found 6 days ago
Select United flight, departing Mon, Mar 23 from Perth to Washington, returning Fri, Apr 3, priced at $1,696 found 6 days ago
Qantas Airways
Tue, Mar 24 - Wed, Apr 1
PER
Perth
IAD
Washington
$1,732 Roundtrip, found 4 days ago
$1,732
Roundtrip
found 4 days ago
Select Qantas Airways flight, departing Tue, Mar 24 from Perth to Washington, returning Wed, Apr 1, priced at $1,732 found 4 days ago
United
Sat, Mar 21 - Fri, Apr 3
PER
Perth
IAD
Washington
$1,733 Roundtrip, found 6 days ago
$1,733
Roundtrip
found 6 days ago
Select United flight, departing Sat, Mar 21 from Perth to Washington, returning Fri, Apr 3, priced at $1,733 found 6 days ago
Qantas Airways
Thu, Mar 19 - Wed, Apr 1
PER
Perth
IAD
Washington
$1,794 Roundtrip, found 6 days ago
$1,794
Roundtrip
found 6 days ago
Select Qantas Airways flight, departing Thu, Mar 19 from Perth to Washington, returning Wed, Apr 1, priced at $1,794 found 6 days ago
United
Wed, Jun 24 - Sun, Jul 19
PER
Perth
IAD
Washington
$1,883 Roundtrip, found 5 days ago
$1,883
Roundtrip
found 5 days ago
Select United flight, departing Wed, Jun 24 from Perth to Washington, returning Sun, Jul 19, priced at $1,883 found 5 days ago
Vietnam Airlines
Sun, Nov 22 - Fri, Nov 27
PER
Perth
IAD
Washington
$1,900 Roundtrip, found 6 days ago
$1,900
Roundtrip
found 6 days ago
Select Vietnam Airlines flight, departing Sun, Nov 22 from Perth to Washington, returning Fri, Nov 27, priced at $1,900 found 6 days ago
Jetstar
Mon, Mar 23 - Sun, Mar 29
PER
Perth
IAD
Washington
$2,012 Roundtrip, found 1 day ago
$2,012
Roundtrip
found 1 day ago
Select Jetstar flight, departing Mon, Mar 23 from Perth to Washington, returning Sun, Mar 29, priced at $2,012 found 1 day ago
JetBlue Airways
Sun, Nov 22 - Fri, Nov 27
PER
Perth
IAD
Washington
$2,158 Roundtrip, found 6 days ago
$2,158
Roundtrip
found 6 days ago
Select JetBlue Airways flight, departing Sun, Nov 22 from Perth to Washington, returning Fri, Nov 27, priced at $2,158 found 6 days ago

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Frequently asked questions

How much does a flight from Perth Airport (PER) to Washington Dulles Intl. Airport (IAD) cost?
Snag a cheap one-way flight from $979 or cheap return flight from $1,641 from Perth Airport (PER) to Washington Dulles Intl. Airport (IAD) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Perth Airport (PER) to Washington Dulles Intl. Airport (IAD)?
March is the least expensive month to fly from PER to IAD. Planning your trip for the off-season is often the key to better flight prices.
What is the cheapest airline that flies from Perth Airport (PER) to Washington Dulles Intl. Airport (IAD)?
To find the cheapest airline flying from PER to IAD, use Expedia's filter tool. Tailor your search based on your travel style, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from Perth Airport (PER) to Washington Dulles Intl. Airport (IAD)?
You'll need to take a flight with a layover when traveling from Perth Airport (PER) to Washington Dulles Intl. Airport (IAD). There are no daily direct flights on this route. However, simply filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from PER to IAD?
Usually you'll find the most flight options available on a Friday. Tuesdays tend to be the quietest.* But this can vary depending on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Perth Airport (PER) to Washington Dulles Intl. Airport (IAD)?
To arrive at Washington Dulles Intl. Airport (IAD) on schedule, select a flight that takes off from Perth Airport (PER) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Perth Airport (PER) to Washington Dulles Intl. Airport (IAD) last-minute?
Booking your flight from PER to IAD just before your journey is usually more expensive. But if you're flexible with your travel dates and times, you could score a cheap last-minute fare.
Is it cheaper to book a PER to IAD flight and hotel package?
Securing a PER to IAD flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Choose from our wide range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Perth Airport (PER) to Washington Dulles Intl. Airport (IAD)?
Typically, it's possible to cancel or reschedule your PER to IAD flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Origin airport
Perth
Destination airport
Washington Dulles Intl.
Airlines serving
Air Canada, Air New Zealand, Cathay Pacific, Emirates, Etihad Airways, JetBlue Airways, Qantas Airways, Qatar Airways, United
Roundtrip price
$1,640
Distance
11540 mi

Book with confidence

Perth to Washington Flights

The cheapest times to fly from Perth to Washington

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Perth to Washington are during the month of March. You can find some of the cheapest flights from Perth to Washington with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Perth to Washington

Sunday is one of the best days to book for cheap flights from Perth to Washington: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Perth to Washington

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Perth to Washington in 2026. You can also book with separate airlines for your outbound and return journeys, from $979 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Perth to Washington flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Perth to Washington airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Perth to Washington Flights

*Flight schedules are subject to change.

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*Available to One Key members.