$437 Cheap Flights from Washington (DCA) to Adelaide (ADL)

View $437 flight on Thu, Jan 1, 2026Opens in a new window

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

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Cheap Flights from Washington to Adelaide (DCA-ADL)

Prices were available within the past 7 days and start at $437 for one-way flights and $823 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Tue, Mar 31 - Thu, Apr 16
DCA
Washington
ADL
Adelaide
$823 Roundtrip, found 1 day ago
$823
Roundtrip
found 1 day ago
Select Air Canada flight, departing Tue, Mar 31 from Washington to Adelaide, returning Thu, Apr 16, priced at $823 found 1 day ago
Air Canada
Tue, Mar 31 - Thu, Apr 16
DCA
Washington
ADL
Adelaide
$828 Roundtrip, found 1 day ago
$828
Roundtrip
found 1 day ago
Select Air Canada flight, departing Tue, Mar 31 from Washington to Adelaide, returning Thu, Apr 16, priced at $828 found 1 day ago
Air Canada
Sun, Apr 5 - Mon, Apr 13
DCA
Washington
ADL
Adelaide
$830 Roundtrip, found 2 days ago
$830
Roundtrip
found 2 days ago
Select Air Canada flight, departing Sun, Apr 5 from Washington to Adelaide, returning Mon, Apr 13, priced at $830 found 2 days ago
Air Canada
Sun, Apr 5 - Mon, Apr 13
DCA
Washington
ADL
Adelaide
$835 Roundtrip, found 2 days ago
$835
Roundtrip
found 2 days ago
Select Air Canada flight, departing Sun, Apr 5 from Washington to Adelaide, returning Mon, Apr 13, priced at $835 found 2 days ago
Air Canada
Tue, Mar 31 - Fri, Apr 17
DCA
Washington
ADL
Adelaide
$837 Roundtrip, found 1 day ago
$837
Roundtrip
found 1 day ago
Select Air Canada flight, departing Tue, Mar 31 from Washington to Adelaide, returning Fri, Apr 17, priced at $837 found 1 day ago
Air Canada
Tue, Mar 31 - Fri, Apr 17
DCA
Washington
ADL
Adelaide
$842 Roundtrip, found 1 day ago
$842
Roundtrip
found 1 day ago
Select Air Canada flight, departing Tue, Mar 31 from Washington to Adelaide, returning Fri, Apr 17, priced at $842 found 1 day ago
United
Sat, Dec 27 - Mon, Jan 12
DCA
Washington
ADL
Adelaide
$864 Roundtrip, found 2 days ago
$864
Roundtrip
found 2 days ago
Select United flight, departing Sat, Dec 27 from Washington to Adelaide, returning Mon, Jan 12, priced at $864 found 2 days ago
Alaska Airlines
Sat, Nov 8 - Wed, Nov 12
DCA
Washington
ADL
Adelaide
$929 Roundtrip, found 5 days ago
$929
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Sat, Nov 8 from Washington to Adelaide, returning Wed, Nov 12, priced at $929 found 5 days ago
Qantas Airways
Mon, Feb 9 - Sat, Feb 21
DCA
Washington
ADL
Adelaide
$930 Roundtrip, found 6 days ago
$930
Roundtrip
found 6 days ago
Select Qantas Airways flight, departing Mon, Feb 9 from Washington to Adelaide, returning Sat, Feb 21, priced at $930 found 6 days ago
Fiji Airways
Tue, Apr 7 - Sat, Apr 11
DCA
Washington
ADL
Adelaide
$1,503 Roundtrip, found 6 days ago
$1,503
Roundtrip
found 6 days ago
Select Fiji Airways flight, departing Tue, Apr 7 from Washington to Adelaide, returning Sat, Apr 11, priced at $1,503 found 6 days ago

Alternative airports near Adelaide

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

Select flight to Adelaide, SA Airport ADL. Cheapest and Closest option available. Average driving time to city center is 11 minutes. Flights from $1,770
ADL
Adelaide, SA Airport
CheapestClosest
Average driving time to city center11 min
Flights from $1,770

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 $437 or cheap return flight from $823 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)?
March 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.

Travel information

Origin airport
Ronald Reagan Washington National
Destination airport
Adelaide
Airlines serving
Air Canada, Air New Zealand, American Airlines, Cathay Pacific, Fiji Airways, Qantas Airways, United
Roundtrip price
$822
Distance
10464 mi

Book with confidence

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 March. 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 $437 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.

 

Washington to Adelaide Flights

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*Available to One Key members.