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

American Airlines, United Airlines, and Air New Zealand are the most popular carriers operating from Washington, D.C. to Adelaide

How long does it take to fly to Adelaide?

Flight times vary depending on what airport in Washington, D.C. you fly out of and what airport in Adelaide you fly into. For example, flying from Washington, D.C. to Adelaide takes 28h 27m on average. On the other hand, flying from Baltimore to Adelaide takes 33h 30m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo if there are any available for your route.

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?

The number of operators available for flights from Washington, D.C. to Adelaide Airport is 1 as of October 2025.

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.

$460 Cheap Flights from Washington, D.C. to Adelaide in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

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

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:32 am - 1:40 pmIAD-ADL

39h 38m2 stops

4:10 pm - 10:15 pmADL-IAD

44h 35m2 stops

$896American Airlines

Find Deal

Sat, Feb 14 - Sat, Mar 14

8:35 am - 6:45 pmDCA-ADL

42h 40m2 stops

12:00 pm - 11:00 pmADL-DCA

26h 30m2 stops

$953Qantas Airways

Find Deal

Thu, Nov 13 - Mon, Nov 17

9:59 am - 10:05 pmDCA-ADL

44h 36m2 stops

6:30 pm - 8:00 pmADL-DCA

41h 00m2 stops

$955Multiple Airlines

Find Deal

Tue, Dec 9 - Fri, Jan 9

8:40 pm - 4:10 pmDCA-ADL

52h 00m3 stops

6:00 am - 10:35 pmADL-DCA

31h 05m3 stops

$1,248Air Canada

Find Deal

Wed, Mar 4 - Tue, Mar 24

6:28 pm - 9:30 amBWI-ADL

23h 32m1 stop

1:55 pm - 7:19 amADL-BWI

31h 54m1 stop

$1,311United Airlines

Find Deal

Sat, Feb 14 - Sat, Mar 14

8:00 am - 9:30 amBWI-ADL

34h 00m2 stops

1:55 pm - 7:19 amADL-BWI

31h 54m1 stop

$1,315United Airlines

Find Deal

Sat, Feb 14 - Sat, Mar 14

9:00 am - 7:00 pmIAD-ADL

42h 30m3 stops

6:00 am - 8:29 pmADL-IAD

28h 59m3 stops

$1,317Multiple Airlines

Find Deal

Wed, Mar 4 - Tue, Mar 24

8:30 am - 10:55 amBWI-ADL

34h 55m2 stops

6:05 am - 4:52 pmADL-BWI

25h 17m2 stops

$1,603Air New Zealand

Find Deal

Wed, Mar 4 - Tue, Mar 24

7:00 am - 10:55 amDCA-ADL

36h 25m2 stops

6:25 am - 9:30 pmADL-DCA

29h 35m2 stops

$1,614Air New Zealand

Find Deal

Wed, Mar 4 - Tue, Mar 24

12:40 pm - 7:10 pmIAD-ADL

39h 00m3 stops

6:00 am - 8:29 pmADL-IAD

28h 59m3 stops

$1,774Air Canada

Find Deal

Sat, Feb 14 - Sat, Mar 14

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

Our best Qatar Airways deals on Washington, D.C. to Adelaide flight tickets

Qatar Airways

Nov 12

IAD8:05 pmWashington, D.C. Dulles Intl

29h 30m

1 stop

ADL5:05 pmAdelaide

Nov 19

ADL5:05 pmAdelaide

38h 20m

2 stops

IAD3:55 pmWashington, D.C. Dulles Intl

$1,979

Find similar

Qatar Airways

Nov 30

IAD10:40 amWashington, D.C. Dulles Intl

32h 45m

2 stops

ADL10:55 amAdelaide

Dec 7

ADL10:00 pmAdelaide

33h 25m

1 stop

IAD3:55 pmWashington, D.C. Dulles Intl

$2,198

Find similar

Qatar Airways

Oct 21

IAD9:00 pmWashington, D.C. Dulles Intl

44h 10m

2 stops

ADL7:40 amAdelaide

Oct 27

ADL10:00 pmAdelaide

33h 25m

1 stop

IAD4:55 pmWashington, D.C. Dulles Intl

$2,469

Find similar

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

Our best United Airlines deals on Washington, D.C. to Adelaide flight tickets

United Airlines

Feb 14

BWI6:28 pmBaltimore/Washington

23h 32m

1 stop

ADL9:30 amAdelaide

Mar 14

ADL1:55 pmAdelaide

31h 54m

1 stop

BWI7:19 amBaltimore/Washington

$1,311

Find similar

United Airlines

Feb 14

BWI8:00 amBaltimore/Washington

34h 00m

2 stops

ADL9:30 amAdelaide

Mar 14

ADL1:55 pmAdelaide

31h 54m

1 stop

BWI7:19 amBaltimore/Washington

$1,315

Find similar

United Airlines

Feb 14

BWI6:28 pmBaltimore/Washington

23h 32m

1 stop

ADL9:30 amAdelaide

Mar 14

ADL1:55 pmAdelaide

29h 39m

2 stops

BWI5:04 amBaltimore/Washington

$1,316

Find similar

momondo Fare Finder

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

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Sat 2/14

6:32 am-1:40 pm

2 stops39h 38m

Adelaide

Sat 3/14

4:10 pm-10:15 pm

2 stops44h 35m

$896

Washington, D.C.Adelaide

DCA - ADL

DCAADL

Washington, D.C. Reagan-National

Thu 11/13

8:35 am-6:45 pm

2 stops42h 40m

Adelaide

Mon 11/17

12:00 pm-11:00 pm

2 stops26h 30m

$953

Washington, D.C.Adelaide

DCA - ADL

DCAADL

Washington, D.C. Reagan-National

Tue 12/9

9:59 am-10:05 pm

2 stops44h 36m

Adelaide

Fri 1/9

6:30 pm-8:00 pm

2 stops41h 00m

$955

Washington, D.C.Adelaide

DCA - ADL

DCAADL

Washington, D.C. Reagan-National

Wed 3/4

8:40 pm-4:10 pm

3 stops52h 00m

Adelaide

Tue 3/24

6:00 am-10:35 pm

3 stops31h 05m

$1,248

BaltimoreAdelaide

BWI - ADL

BWIADL

Baltimore/Washington

Sat 2/14

6:28 pm-9:30 am

1 stop23h 32m

Adelaide

Sat 3/14

1:55 pm-7:19 am

1 stop31h 54m

$1,311

BaltimoreAdelaide

BWI - ADL

BWIADL

Baltimore/Washington

Sat 2/14

8:00 am-9:30 am

2 stops34h 00m

Adelaide

Sat 3/14

1:55 pm-7:19 am

1 stop31h 54m

$1,315

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Wed 3/4

9:00 am-7:00 pm

3 stops42h 30m

Adelaide

Tue 3/24

6:00 am-8:29 pm

3 stops28h 59m

$1,317

BaltimoreAdelaide

BWI - ADL

BWIADL

Baltimore/Washington

Wed 3/4

8:30 am-10:55 am

2 stops34h 55m

Adelaide

Tue 3/24

6:05 am-4:52 pm

2 stops25h 17m

$1,603

Washington, D.C.Adelaide

DCA - ADL

DCAADL

Washington, D.C. Reagan-National

Wed 3/4

7:00 am-10:55 am

2 stops36h 25m

Adelaide

Tue 3/24

6:25 am-9:30 pm

2 stops29h 35m

$1,614

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Sat 2/14

12:40 pm-7:10 pm

3 stops39h 00m

Adelaide

Sat 3/14

6:00 am-8:29 pm

3 stops28h 59m

$1,774

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Other information

What is the cheapest day to depart on your flight to Adelaide?

The cheapest day to depart on your flight to Adelaide is on a Sunday when prices can be found for as low as $1,596. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Adelaide is Friday, with ticket prices averaging around $2,914.

What is the cheapest time of day to depart on your flight to Adelaide?

According to our data, the cheapest time of day to fly to Adelaide is in the afternoon. momondo users have found flights departing from Washington, D.C. to Adelaide in the afternoon for as low as $1,741. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Adelaide are more costly at noon, with an average ticket price of $2,841. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

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

Direct flights	None

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

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 23h 32m.
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?
The number of operators available for flights from Washington, D.C. to Adelaide Airport is 1 as of October 2025.
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?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Washington, D.C. to Adelaide is Qantas Airways (34% of total bookings). The next most popular airlines are Air New Zealand (23%), United Airlines (23%), and Fiji Airways (21%).

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 Airways	PriceFrom $1,041	Free Cancellation	Rating 7.5 918 reviews		Search Qantas Airways flights

Glenelg

Why use momondo?

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.

An easier way to manage your Adelaide trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Sat 11/15

Sat 11/22

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Australia

Cheap flights from Washington, D.C. to Adelaide from $460

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 10/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

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

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

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

Our best Qatar Airways deals on Washington, D.C. to Adelaide flight tickets

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

Our best United Airlines deals on Washington, D.C. to Adelaide flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Washington, D.C. to Adelaide that are best for you.

See travel insights to Adelaide from

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 day to depart on your flight to Adelaide?

What is the cheapest time of day to depart on your flight to Adelaide?

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

American Airlines, United Airlines, and Air New Zealand are the most popular carriers operating from Washington, D.C. to Adelaide

How long does it take to fly to Adelaide?

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

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

Direct flights

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

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

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?

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

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

Traveling to a place near Adelaide?

Why use momondo?

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

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

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

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

An easier way to manage your Adelaide trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Australia

Airports servicing South Australia