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

United Airlines, American Airlines, and Delta are the most popular carriers operating from Washington, D.C. to Australia

What airlines fly to Australia?

United Airlines, Qantas Airways and American Airlines are the top three most popular airlines that fly to Australia from Washington, D.C. according to our data. United Airlines is the first choice among our users, with 56% of people opting to fly with this airline when traveling to Australia. Keep in mind that there are 7 different airlines that fly to Australia on a routine basis, so you have a few additional options to choose from.

How long is the flight from Washington, D.C. to Australia?

Flight times from Washington, D.C. to Australia vary, but if you’re flying out of Baltimore and flying into Sydney (one of the most popular routes), then the duration is 21h 56m on average. Another popular route from Washington, D.C. to Australia is flying from Washington, D.C. to Sydney, which will take roughly 22h 52m. Keep in mind that layovers or delays could extend your travel time.

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

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

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

The number of operators available for flights from Washington, D.C. to Australia is 7 as of June 2026.

How old do you have to be to fly from Washington, D.C. to Australia?

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 Australia.

What documentation or ID do you need to fly to Australia?

The necessary travel and health documents for your Australia 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.

$491 Cheap Flights from Washington, D.C. to Australia in 2026

Discover deals from 900+ travel sites with momondo.

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

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

11:10 am - 11:50 am

IAD

SYD

34h 40m

3 stops

6:15 am - 4:07 pm

SYD

IAD

47h 52m

3 stops

$1,007Multiple Airlines

Fri, Aug 14 - Fri, Aug 21

7:00 am - 11:50 am

DCA

SYD

38h 50m

3 stops

6:15 am - 12:51 pm

SYD

DCA

44h 36m

3 stops

$1,015Multiple Airlines

Fri, Aug 14 - Fri, Aug 21

11:59 am - 6:45 am

BWI

MEL

28h 46m

2 stops

9:45 am - 11:41 pm

MEL

BWI

27h 56m

2 stops

$1,084American Airlines

Fri, Aug 7 - Fri, Aug 14

11:59 am - 5:00 am

BWI

MEL

27h 01m

1 stop

1:35 pm - 9:29 pm

MEL

BWI

21h 54m

1 stop

$1,133Qantas Airways

Sat, Sep 19 - Sat, Sep 26

11:59 am - 5:00 am

BWI

MEL

27h 01m

1 stop

1:35 pm - 9:29 pm

MEL

BWI

21h 54m

1 stop

$1,134Qantas Airways

Sat, Sep 19 - Sat, Sep 26

3:55 pm - 6:55 am

BWI

SYD

25h 00m

1 stop

9:10 am - 8:49 pm

SYD

BWI

25h 39m

2 stops

$1,174American Airlines

Mon, Aug 10 - Mon, Aug 17

3:03 pm - 7:00 am

BWI

SYD

25h 57m

2 stops

9:30 am - 4:37 pm

SYD

BWI

21h 07m

1 stop

$1,186United Airlines

Mon, Aug 10 - Tue, Sep 29

3:03 pm - 7:00 am

BWI

SYD

25h 57m

2 stops

10:20 am - 5:43 pm

SYD

BWI

21h 23m

1 stop

$1,187United Airlines

Mon, Aug 10 - Mon, Aug 17

6:30 am - 9:55 am

IAD

BNE

36h 25m

2 stops

8:20 am - 9:20 pm

BNE

IAD

28h 00m

2 stops

$1,334Air New Zealand

Tue, Dec 1 - Mon, Dec 14

2:47 pm - 8:45 am

IAD

SYD

27h 58m

2 stops

9:55 am - 11:55 pm

SYD

IAD

28h 00m

2 stops

$1,335Air New Zealand

Mon, Aug 24 - Mon, Aug 31

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Air New Zealand flights from Washington, D.C. to Australia

Our best Air New Zealand deals on Washington, D.C. to Australia flight tickets

Air New Zealand

Jul 26

BWI6:59 pmBaltimore/Washington

21h 56m

1 stop

SYD6:55 amSydney Kingsford Smith

Aug 23

SYD10:20 amSydney Kingsford Smith

21h 23m

1 stop

BWI5:43 pmBaltimore/Washington

$1,224

Air New Zealand

Aug 10

BWI7:23 pmBaltimore/Washington

21h 37m

1 stop

SYD7:00 amSydney Kingsford Smith

Aug 24

SYD9:30 amSydney Kingsford Smith

21h 05m

1 stop

BWI4:35 pmBaltimore/Washington

$1,225

Air New Zealand

Jul 26

BWI6:59 pmBaltimore/Washington

21h 56m

1 stop

SYD6:55 amSydney Kingsford Smith

Aug 23

SYD10:20 amSydney Kingsford Smith

21h 23m

1 stop

BWI5:43 pmBaltimore/Washington

$1,226

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

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

United Airlines

Jun 28

BWI6:59 pmBaltimore/Washington

21h 56m

1 stop

SYD6:55 amSydney Kingsford Smith

Jul 12

SYD10:20 amSydney Kingsford Smith

21h 37m

1 stop

BWI5:57 pmBaltimore/Washington

$1,173

United Airlines

Jun 28

BWI6:00 amBaltimore/Washington

34h 55m

2 stops

SYD6:55 amSydney Kingsford Smith

Jul 12

SYD10:20 amSydney Kingsford Smith

21h 37m

1 stop

BWI5:57 pmBaltimore/Washington

$1,180

United Airlines

Jul 4

BWI6:30 amBaltimore/Washington

35h 45m

1 stop

MEL8:15 amMelbourne

Jul 18

MEL10:55 amMelbourne

27h 33m

2 stops

BWI12:28 amBaltimore/Washington

$1,182

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Fri 8/14

11:10 am-11:50 am

3 stops34h 40m

Sydney Kingsford Smith

Fri 8/21

6:15 am-4:07 pm

3 stops47h 52m

$1,007

Washington, D.C.Sydney

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Fri 8/14

7:00 am-11:50 am

3 stops38h 50m

Sydney Kingsford Smith

Fri 8/21

6:15 am-12:51 pm

3 stops44h 36m

$1,015

BaltimoreMelbourne

BWI - MEL

BWIMEL

Baltimore/Washington

Fri 8/7

11:59 am-6:45 am

2 stops28h 46m

Melbourne

Fri 8/14

9:45 am-11:41 pm

2 stops27h 56m

$1,084

BaltimoreMelbourne

BWI - MEL

BWIMEL

Baltimore/Washington

Sat 9/19

11:59 am-5:00 am

1 stop27h 01m

Melbourne

Sat 9/26

1:35 pm-9:29 pm

1 stop21h 54m

$1,133

BaltimoreMelbourne

BWI - MEL

BWIMEL

Baltimore/Washington

Sat 9/19

11:59 am-5:00 am

1 stop27h 01m

Melbourne

Sat 9/26

1:35 pm-9:29 pm

1 stop21h 54m

$1,134

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Mon 8/10

3:55 pm-6:55 am

1 stop25h 00m

Sydney Kingsford Smith

Mon 8/17

9:10 am-8:49 pm

2 stops25h 39m

$1,174

Quickest round-trip

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Mon 8/10

3:03 pm-7:00 am

2 stops25h 57m

Sydney Kingsford Smith

Tue 9/29

9:30 am-4:37 pm

1 stop21h 07m

$1,186

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Mon 8/10

3:03 pm-7:00 am

2 stops25h 57m

Sydney Kingsford Smith

Mon 8/17

10:20 am-5:43 pm

1 stop21h 23m

$1,187

Washington, D.C.Brisbane

IAD - BNE

IADBNE

Washington, D.C. Dulles Intl

Tue 12/1

6:30 am-9:55 am

2 stops36h 25m

Brisbane

Mon 12/14

8:20 am-9:20 pm

2 stops28h 00m

$1,334

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Mon 8/24

2:47 pm-8:45 am

2 stops27h 58m

Sydney Kingsford Smith

Mon 8/31

9:55 am-11:55 pm

2 stops28h 00m

$1,335

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 Australia

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 month to fly to Australia?

The month of August is, on average, the cheapest month to fly to Australia from Washington, D.C., with most prices found around $78. If you aren’t able to travel during the month of August, then book flights to Australia from Washington, D.C. during September instead. Flights to Australia in September, while not as cheap as those in August, still average around $82.

How far in advance should I book a flight from Washington, D.C. to Australia?

You are more likely to see cheaper flights to Australia from Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to Australia for around $1,650 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Australia from Washington, D.C. for as low as $709 on momondo.

Can stopping save me money on Washington, D.C. to Australia flights?

You could potentially save up to 3% on your flight if you consider stops on a Washington, D.C. to Australia flight.

Cheap Washington, D.C. to Australia flight deals and tips

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

Fastest flight time	21h 56m
Direct flights	None

The fastest flight from Washington, D.C. to Australia takes 21h 56m

There are no direct flights from Washington, D.C. to Australia. There are no popular flight routes from Washington, D.C. to Australia.

Search flight deals

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

When did momondo last update prices for flights from Washington, D.C. to Australia?
Prices for flights from Washington, D.C. to Australia refresh daily.
How many operators does momondo search for flights from Washington, D.C. to Australia?
The number of operators available for flights from Washington, D.C. to Australia is 7 as of June 2026.
How old do you have to be to fly from Washington, D.C. to Australia?
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 Australia.
What documentation or ID do you need to fly to Australia?
The necessary travel and health documents for your Australia 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.

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

Compare and see reviews for airlines that fly from Washington, D.C. to Australia with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $282	Free Cancellation	Rating 7.8 8,456 reviews	Search Delta flights
United Airlines	PriceFrom $377	Free Cancellation	Rating 7.4 9,900 reviews	Search United Airlines flights
Qantas Airways	PriceFrom $787	Free Cancellation	Rating 7.5 1,050 reviews	Search Qantas Airways flights
American Airlines	PriceFrom $836	Free Cancellation	Rating 7.1 11,775 reviews	Search American Airlines flights
Air Canada	PriceFrom $839	Free Cancellation	Rating 7.1 11,269 reviews	Search Air Canada flights
Air New Zealand	PriceFrom $1,285	Free Cancellation	Rating 8.0 646 reviews	Search Air New Zealand flights
Qatar Airways	PriceFrom $2,062	Free Cancellation	Rating 7.3 3,736 reviews	Search Qatar Airways flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington, D.C. to Australia for you.

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

Yes. momondo allows you to filter the results for Washington, D.C. to Australia flights to just show those with flexible booking policies.

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

Once you have performed a search for Washington, D.C. to Australia 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 Australia right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Washington, D.C. to Australia flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.