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Cheap flights from Washington, D.C. to Adelaide from $697

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Adelaide departing on 9/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Washington, D.C. to Adelaide

Cheap round-trip flights

Enter your travel dates to find the best prices.
Qantas Airways Logo
3:22 pm - 9:25 am
DCA
-
ADL
28h 33m
2 stops
Qantas Airways Logo
10:10 am - 9:20 pm
ADL
-
DCA
24h 40m
2 stops
$1,335Qantas Airways
Wed, Sep 9 - Wed, Sep 16
Qatar Airways Logo
9:00 pm - 2:45 pm
IAD
-
ADL
51h 15m
2 stops
Qatar Airways Logo
10:00 pm - 3:40 pm
ADL
-
IAD
32h 10m
1 stop
$1,341Qatar Airways
Mon, Oct 5 - Fri, Oct 23
Qatar Airways Logo
9:00 pm - 3:00 pm
IAD
-
ADL
28h 30m
1 stop
Qatar Airways Logo
7:15 am - 8:45 am
ADL
-
IAD
39h 00m
2 stops
$1,352Qatar Airways
Mon, Sep 7 - Mon, Sep 14
Qantas Airways Logo
5:35 pm - 11:05 am
DCA
-
ADL
28h 00m
2 stops
Qantas Airways Logo
10:10 am - 9:20 pm
ADL
-
DCA
24h 40m
2 stops
$1,356Qantas Airways
Wed, Sep 9 - Wed, Sep 16
Qantas Airways Logo
4:56 pm - 11:05 am
IAD
-
ADL
28h 39m
2 stops
Qantas Airways Logo
6:25 am - 8:24 pm
ADL
-
IAD
27h 29m
2 stops
$1,360Qantas Airways
Wed, Sep 9 - Wed, Sep 16
Qatar Airways Logo
9:00 pm - 3:00 pm
IAD
-
ADL
28h 30m
1 stop
Qatar Airways Logo
7:15 am - 8:45 am
ADL
-
IAD
39h 00m
2 stops
$1,362Qatar Airways
Mon, Sep 7 - Mon, Sep 14
United Airlines Logo
1:10 pm - 11:05 am
DCA
-
ADL
32h 25m
3 stops
United Airlines Logo
6:05 am - 10:30 pm
ADL
-
DCA
29h 55m
2 stops
$1,368United Airlines
Wed, Sep 9 - Wed, Sep 16
United Airlines Logo
6:52 pm - 10:55 am
BWI
-
ADL
26h 33m
2 stops
United Airlines Logo
8:00 pm - 5:40 pm
ADL
-
BWI
35h 10m
2 stops
$1,370United Airlines
Mon, Sep 7 - Mon, Sep 14
United Airlines Logo
5:45 pm - 10:55 am
DCA
-
ADL
27h 40m
2 stops
United Airlines Logo
8:00 pm - 4:43 pm
ADL
-
DCA
34h 13m
2 stops
$1,370United Airlines
Mon, Sep 7 - Mon, Sep 14
United Airlines Logo
6:35 pm - 10:55 am
IAD
-
ADL
26h 50m
2 stops
United Airlines Logo
8:00 pm - 8:50 pm
ADL
-
IAD
38h 20m
2 stops
$1,370United Airlines
Mon, Sep 7 - Mon, Sep 14

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Qatar Airways flights from Washington, D.C. to Adelaide

Our best Qatar Airways deals on Washington, D.C. to Adelaide flight tickets
Qatar Airways
Oct 5
IAD9:00 pmWashington, D.C. Dulles Intl
51h 15m
2 stops
ADL2:45 pmAdelaide
Oct 23
ADL10:00 pmAdelaide
32h 10m
1 stop
IAD3:40 pmWashington, D.C. Dulles Intl
$1,341
Qatar Airways
Sep 7
IAD9:00 pmWashington, D.C. Dulles Intl
28h 30m
1 stop
ADL3:00 pmAdelaide
Sep 14
ADL7:15 amAdelaide
39h 00m
2 stops
IAD8:45 amWashington, D.C. Dulles Intl
$1,352
Qatar Airways
Sep 7
IAD9:00 pmWashington, D.C. Dulles Intl
28h 30m
1 stop
ADL3:00 pmAdelaide
Sep 14
ADL7:15 amAdelaide
39h 00m
2 stops
IAD8:45 amWashington, D.C. Dulles Intl
$1,362

United Airlines flights from Washington, D.C. to Adelaide

Our best United Airlines deals on Washington, D.C. to Adelaide flight tickets
United Airlines
Sep 2
DCA1:04 pmWashington, D.C. Reagan-National
32h 31m
3 stops
ADL11:05 amAdelaide
Sep 23
ADL6:05 amAdelaide
29h 55m
2 stops
DCA10:30 pmWashington, D.C. Reagan-National
$1,368
United Airlines
Sep 1
DCA5:45 pmWashington, D.C. Reagan-National
27h 40m
2 stops
ADL10:55 amAdelaide
Sep 21
ADL7:15 amAdelaide
28h 45m
2 stops
DCA10:30 pmWashington, D.C. Reagan-National
$1,369
United Airlines
Sep 7
IAD5:48 pmWashington, D.C. Dulles Intl
27h 37m
2 stops
ADL10:55 amAdelaide
Sep 19
ADL6:30 pmAdelaide
35h 22m
2 stops
IAD4:22 pmWashington, D.C. Dulles Intl
$1,370

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to Adelaide 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, momondo users made 832,500 searches. Data last updated July 28, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Adelaide that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Adelaide

DCA - ADL

DCAADL

Washington, D.C. Reagan-National

Wed 9/9

3:22 pm-9:25 am

2 stops28h 33m

Adelaide

Wed 9/16

10:10 am-9:20 pm

2 stops24h 40m

$1,335

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Mon 10/5

9:00 pm-2:45 pm

2 stops51h 15m

Adelaide

Fri 10/23

10:00 pm-3:40 pm

1 stop32h 10m

$1,341

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Mon 9/7

9:00 pm-3:00 pm

1 stop28h 30m

Adelaide

Mon 9/14

7:15 am-8:45 am

2 stops39h 00m

$1,352
Quickest round-trip

Washington, D.C.Adelaide

DCA - ADL

DCAADL

Washington, D.C. Reagan-National

Wed 9/9

5:35 pm-11:05 am

2 stops28h 00m

Adelaide

Wed 9/16

10:10 am-9:20 pm

2 stops24h 40m

$1,356

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Wed 9/9

4:56 pm-11:05 am

2 stops28h 39m

Adelaide

Wed 9/16

6:25 am-8:24 pm

2 stops27h 29m

$1,360

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Mon 9/7

9:00 pm-3:00 pm

1 stop28h 30m

Adelaide

Mon 9/14

7:15 am-8:45 am

2 stops39h 00m

$1,362

Washington, D.C.Adelaide

DCA - ADL

DCAADL

Washington, D.C. Reagan-National

Wed 9/9

1:10 pm-11:05 am

3 stops32h 25m

Adelaide

Wed 9/16

6:05 am-10:30 pm

2 stops29h 55m

$1,368

BaltimoreAdelaide

BWI - ADL

BWIADL

Baltimore/Washington

Mon 9/7

6:52 pm-10:55 am

2 stops26h 33m

Adelaide

Mon 9/14

8:00 pm-5:40 pm

2 stops35h 10m

$1,370

Washington, D.C.Adelaide

DCA - ADL

DCAADL

Washington, D.C. Reagan-National

Mon 9/7

5:45 pm-10:55 am

2 stops27h 40m

Adelaide

Mon 9/14

8:00 pm-4:43 pm

2 stops34h 13m

$1,370

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Mon 9/7

6:35 pm-10:55 am

2 stops26h 50m

Adelaide

Mon 9/14

8:00 pm-8:50 pm

2 stops38h 20m

$1,370

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Washington, D.C. to Adelaide

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Washington, D.C. to Adelaide?

United Airlines, Qantas Airways, and Fiji Airways are the most popular carriers operating from Washington, D.C. to Adelaide

When to book flights from Washington, D.C. to Adelaide

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to Adelaide according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. to Adelaide (WAS to ADL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Adelaide

Fastest flight time

26h 04m

Direct flights

None
The fastest flight from Washington, D.C. to Adelaide takes 26h 04m
There are no direct flights from Washington, D.C. to Adelaide. There are no popular flight routes from Washington, D.C. to Adelaide.
Search flight deals

Frequently asked questions about flying from Washington, D.C. to Adelaide

  • How far is Washington, D.C. to Adelaide by plane?

    There are 10454.6 mi between Washington, D.C. and Adelaide. A reasonable flight in good conditions will take 26h 04m.

  • When did momondo last update prices for flights from Washington, D.C. to Adelaide Airport?

    Prices for flights from Washington, D.C. to Adelaide Airport refresh daily.

  • How many operators does momondo search for flights from Washington, D.C. to Adelaide Airport?

  • How old do you have to be to fly from Washington, D.C. to Adelaide Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to Adelaide Airport.

  • What documentation or ID do you need to fly to Adelaide Airport?

    The necessary travel and health documents for your Adelaide Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Washington, D.C. to Adelaide?

Best airlines flying from Washington, D.C. to Adelaide

Compare and see reviews for airlines that fly from Washington, D.C. to Adelaide with momondo
Airline
Rating
Free Cancellation
Price
Qantas AirwaysPriceFrom $1,167Free CancellationRating
7.5
1,067 reviews
Search Qantas Airways flights

Traveling to a place near Adelaide?

Book flights to Adelaide if you plan to visit one of these locations
Glenelg

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Why should I use momondo to find a flight deal from Washington, D.C. to Adelaide?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington, D.C. to Adelaide. momondo saves you time and could save you money on your trip.

Can I find flights from Washington, D.C. to Adelaide with flexible booking policies on momondo?

Flights from Washington, D.C. to Adelaide with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Washington, D.C. to Adelaide?

Once you have performed a search for Washington, D.C. to Adelaide flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Washington, D.C. to Adelaide right now. Can momondo alert me if prices change?

Price alerts on flights to Adelaide from Washington, D.C. are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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