$937 Cheap Flights from Washington (DCA) to Adelaide (ADL)

View $937 flight on Sun, Jan 4, 2026Opens in a new window

Popular airlines from Ronald Reagan Washington National Airport (DCA) to Adelaide, SA Airport (ADL)

Cheap Flights from Washington to Adelaide (DCA-ADL)

Prices were available within the past 7 days and start at $937 for one-way flights and $1,249 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, Nov 4 - Thu, Nov 20
DCA
Washington
ADL
Adelaide
$1,249 Roundtrip, found 6 days ago
$1,249
Roundtrip
found 6 days ago
Select American Airlines flight, departing Tue, Nov 4 from Washington to Adelaide, returning Thu, Nov 20, priced at $1,249 found 6 days ago
Fiji Airways
Tue, Feb 24 - Sat, Feb 28
DCA
Washington
ADL
Adelaide
$1,355 Roundtrip, found 19 hours ago
$1,355
Roundtrip
found 19 hours ago
Select Fiji Airways flight, departing Tue, Feb 24 from Washington to Adelaide, returning Sat, Feb 28, priced at $1,355 found 19 hours ago
Fiji Airways
Tue, Feb 24 - Sat, Mar 14
DCA
Washington
ADL
Adelaide
$1,373 Roundtrip, found 19 hours ago
$1,373
Roundtrip
found 19 hours ago
Select Fiji Airways flight, departing Tue, Feb 24 from Washington to Adelaide, returning Sat, Mar 14, priced at $1,373 found 19 hours ago
Air New Zealand
Wed, Mar 11 - Wed, Mar 18
DCA
Washington
ADL
Adelaide
$1,383 Roundtrip, found 18 hours ago
$1,383
Roundtrip
found 18 hours ago
Select Air New Zealand flight, departing Wed, Mar 11 from Washington to Adelaide, returning Wed, Mar 18, priced at $1,383 found 18 hours ago
Air New Zealand
Fri, Nov 7 - Sun, Nov 23
DCA
Washington
ADL
Adelaide
$1,432 Roundtrip, found 6 days ago
$1,432
Roundtrip
found 6 days ago
Select Air New Zealand flight, departing Fri, Nov 7 from Washington to Adelaide, returning Sun, Nov 23, priced at $1,432 found 6 days ago
American Airlines
Sat, Oct 18 - Sat, Nov 1
DCA
Washington
ADL
Adelaide
$1,460 Roundtrip, found 3 hours ago
$1,460
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Sat, Oct 18 from Washington to Adelaide, returning Sat, Nov 1, priced at $1,460 found 3 hours ago
Air New Zealand
Fri, Nov 7 - Fri, Nov 21
DCA
Washington
ADL
Adelaide
$1,482 Roundtrip, found 6 days ago
$1,482
Roundtrip
found 6 days ago
Select Air New Zealand flight, departing Fri, Nov 7 from Washington to Adelaide, returning Fri, Nov 21, priced at $1,482 found 6 days ago
American Airlines
Sat, Oct 18 - Sat, Oct 25
DCA
Washington
ADL
Adelaide
$1,496 Roundtrip, found 3 hours ago
$1,496
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Sat, Oct 18 from Washington to Adelaide, returning Sat, Oct 25, priced at $1,496 found 3 hours ago
Air Canada
Tue, Nov 11 - Sun, Nov 16
DCA
Washington
ADL
Adelaide
$1,650 Roundtrip, found 4 days ago
$1,650
Roundtrip
found 4 days ago
Select Air Canada flight, departing Tue, Nov 11 from Washington to Adelaide, returning Sun, Nov 16, priced at $1,650 found 4 days ago
Qantas Airways
Wed, Feb 11 - Wed, Feb 25
DCA
Washington
ADL
Adelaide
$1,712 Roundtrip, found 4 days ago
$1,712
Roundtrip
found 4 days ago
Select Qantas Airways flight, departing Wed, Feb 11 from Washington to Adelaide, returning Wed, Feb 25, priced at $1,712 found 4 days ago
Flights from Washington (DCA) to Adelaide (ADL)
Origin airport
Ronald Reagan Washington National
Destination airport
Adelaide
Airlines serving
Air Canada, Air New Zealand, American Airlines, Cathay Pacific, Emirates, Fiji Airways, Qantas Airways, Qatar Airways, Singapore Airlines, United
Roundtrip price
$1,249
Distance
10464 mi

Washington to Adelaide Flights

The cheapest times to fly from Washington to Adelaide

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

 

The best time to book a flight from Washington to Adelaide

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

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 Adelaide in 2025. You can also book with separate airlines for your outbound and return journeys, from $937 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 Adelaide 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 Adelaide 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.

 

Frequently asked questions

How much does a flight from Ronald Reagan Washington National Airport (DCA) to Adelaide Airport (ADL) cost?
Get a cheap one-way flight from $937 or cheap return flight from $1,249 from Ronald Reagan Washington National Airport (DCA) to Adelaide Airport (ADL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Ronald Reagan Washington National Airport (DCA) to Adelaide Airport (ADL)?
November is the least expensive month to fly from DCA to ADL. Avoiding peak travel times is often the key to finding better deals on flights.
What is the cheapest airline that flies from Ronald Reagan Washington National Airport (DCA) to Adelaide Airport (ADL)?
To find the cheapest airline flying from DCA to ADL, use Expedia's filter tool. Tailor your search based on what matters most to you, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Ronald Reagan Washington National Airport (DCA) to Adelaide Airport (ADL)?
You'll have to book a flight with a layover when traveling from Ronald Reagan Washington National Airport (DCA) to Adelaide Airport (ADL). There are no daily direct flights on this route. However, just filter your search to include one or two stops to discover an option that works for you.
What day of the week has the most flights from DCA to ADL?
Typically you'll find the greatest selection of flight options on a Friday. Tuesdays tend to be the quietest.* But this can change depending on the season, carrier 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 Ronald Reagan Washington National Airport (DCA) to Adelaide Airport (ADL)?
Opt for a flight from Ronald Reagan Washington National Airport (DCA) to Adelaide Airport (ADL) that takes off before 3 PM to reduce the risk of cancellations. Departures after this time have a 22% higher chance of being canceled, on average.**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 Ronald Reagan Washington National Airport (DCA) to Adelaide Airport (ADL) last-minute?
Booking your flight from DCA to ADL shortly before your trip is usually more expensive. But if there's some wiggle room with your travel times and dates, you could snag a cheap last-minute fare.
Is it cheaper to book a DCA to ADL flight and hotel package?
You can save money by booking a DCA to ADL flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one place. Once you've selected your preferred accommodations and flights, consider adding extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Ronald Reagan Washington National Airport (DCA) to Adelaide Airport (ADL)?
If you booked your DCA to ADL flight in the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for more details.

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*Available to One Key members.