$689 Cheap Flights from Washington (IAD) to Perth (PER)

View $689 flight on Fri, Jan 30, 2026Opens in a new window

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

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Cheap Flights from Washington to Perth (IAD-PER)

Prices were available within the past 7 days and start at $689 for one-way flights and $1,305 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Wed, May 6 - Mon, May 18
IAD
Washington
PER
Perth
$1,305 Roundtrip, found 4 days ago
$1,305
Roundtrip
found 4 days ago
Select Air Canada flight, departing Wed, May 6 from Washington to Perth, returning Mon, May 18, priced at $1,305 found 4 days ago
Air Canada
Wed, May 6 - Mon, May 18
IAD
Washington
PER
Perth
$1,310 Roundtrip, found 4 days ago
$1,310
Roundtrip
found 4 days ago
Select Air Canada flight, departing Wed, May 6 from Washington to Perth, returning Mon, May 18, priced at $1,310 found 4 days ago
Air Canada
Wed, May 6 - Mon, May 18
IAD
Washington
PER
Perth
$1,322 Roundtrip, found 4 days ago
$1,322
Roundtrip
found 4 days ago
Select Air Canada flight, departing Wed, May 6 from Washington to Perth, returning Mon, May 18, priced at $1,322 found 4 days ago
Air Canada
Wed, May 6 - Mon, May 18
IAD
Washington
PER
Perth
$1,359 Roundtrip, found 4 days ago
$1,359
Roundtrip
found 4 days ago
Select Air Canada flight, departing Wed, May 6 from Washington to Perth, returning Mon, May 18, priced at $1,359 found 4 days ago
Air Canada
Wed, May 6 - Mon, May 18
IAD
Washington
PER
Perth
$1,364 Roundtrip, found 4 days ago
$1,364
Roundtrip
found 4 days ago
Select Air Canada flight, departing Wed, May 6 from Washington to Perth, returning Mon, May 18, priced at $1,364 found 4 days ago
Qantas Airways
Thu, Jan 1 - Mon, Jan 19
IAD
Washington
PER
Perth
$1,373 Roundtrip, found 6 days ago
$1,373
Roundtrip
found 6 days ago
Select Qantas Airways flight, departing Thu, Jan 1 from Washington to Perth, returning Mon, Jan 19, priced at $1,373 found 6 days ago
Cathay Pacific
Tue, Nov 4 - Thu, Nov 13
IAD
Washington
PER
Perth
$1,693 Roundtrip, found 2 days ago
$1,693
Roundtrip
found 2 days ago
Select Cathay Pacific flight, departing Tue, Nov 4 from Washington to Perth, returning Thu, Nov 13, priced at $1,693 found 2 days ago
Swiss International Air Lines
Tue, Mar 10 - Wed, Mar 25
IAD
Washington
PER
Perth
$1,813 Roundtrip, found 5 days ago
$1,813
Roundtrip
found 5 days ago
Select Swiss International Air Lines flight, departing Tue, Mar 10 from Washington to Perth, returning Wed, Mar 25, priced at $1,813 found 5 days ago
Lufthansa
Mon, Jun 8 - Mon, Aug 3
IAD
Washington
PER
Perth
$1,820 Roundtrip, found 2 days ago
$1,820
Roundtrip
found 2 days ago
Select Lufthansa flight, departing Mon, Jun 8 from Washington to Perth, returning Mon, Aug 3, priced at $1,820 found 2 days ago
American Airlines
Thu, Jan 22 - Mon, May 11
IAD
Washington
PER
Perth
$1,848 Roundtrip, found 1 day ago
$1,848
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Jan 22 from Washington to Perth, returning Mon, May 11, priced at $1,848 found 1 day ago

Alternative airports near Perth

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Perth Airport PER. Cheapest and Closest option available. Average driving time to city center is 14 minutes. Flights from $1,903
PER
Perth Airport
CheapestClosest
Average driving time to city center14 min
Flights from $1,903

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Perth Airport (PER) cost?
Secure a cheap one-way flight from $689 or cheap return flight from $1,305 from Washington Dulles Intl. Airport (IAD) to Perth Airport (PER) 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 Washington Dulles Intl. Airport (IAD) to Perth Airport (PER)?
Planning your trip for May can help you save, as it's the cheapest month for flights between IAD and PER. You'll typically find the lowest prices during off-peak months.
What is the cheapest airline that flies from Washington Dulles Intl. Airport (IAD) to Perth Airport (PER)?
To find the cheapest airline flying from IAD to PER, use Expedia's filter tool. Customize your search based on your travel needs, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Perth Airport (PER)?
You'll need to take a flight with a layover when traveling from Washington Dulles Intl. Airport (IAD) to Perth Airport (PER). There are no daily direct flights on this route. However, simply filter your search to include one or more stops to discover an option that works for you.
What day of the week has the most flights from IAD to PER?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Washington Dulles Intl. Airport (IAD) to Perth Airport (PER)?
To land at Perth Airport (PER) on schedule, select a flight that leaves from Washington Dulles Intl. Airport (IAD) 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 Washington Dulles Intl. Airport (IAD) to Perth Airport (PER) last-minute?
Booking your ticket from IAD to PER just before your journey is usually more expensive. But if there's some wiggle room with your departure dates and times, you could land a cheap last-minute fare.
Is it cheaper to book an IAD to PER flight and hotel package?
Securing an IAD to PER flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip in one place. Select from our impressive range of stays and then add activities, car rentals and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Perth Airport (PER)?
Usually, it's possible to cancel or reschedule your IAD to PER flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Perth
Airlines serving
Air Canada, Air New Zealand, All Nippon Airways, American Airlines, Austrian Airlines, Cathay Pacific, Emirates, Etihad Airways, JetBlue Airways, Lufthansa, Malaysia Airlines, Qantas Airways, Qatar Airways, Swiss International Air Lines, United
Roundtrip price
$1,305
Distance
11540 mi

Book with confidence

Washington to Perth Flights

The cheapest times to fly from Washington to Perth

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 Washington to Perth are during the month of May. You can find some of the cheapest flights from Washington to Perth with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Perth

Sunday is one of the best days to book for cheap flights from Washington to Perth: 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 Washington to Perth

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 Washington to Perth in 2025. You can also book with separate airlines for your outbound and return journeys, from $689 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 Washington to Perth 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 Washington to Perth 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.

 

Washington to Perth Flights

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*Available to One Key members.