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Dulles Intl

$745+ Cheap flights from Australia to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/9. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — IAD
Jul 18 — Jul 251
Sat 7/18
Sat 7/25
1 adult, Economy
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Cheap flight deals from Australia to Dulles Intl

Cheapest flights from Australia to Dulles Intl
Explore the most affordable flight options available from Australia to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2026.

This Trip.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/146:15 am
SYD
-
IAD
3 stops42h 01m
Multiple Airlines
Tue 7/289:50 am
IAD
-
SYD
3 stops36h 00m
Multiple Airlines
Deal found 6/17$1,007
This Trip.com deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/141:15 pm
SYD
-
IAD
3 stops35h 01m
Multiple Airlines
Thu 7/239:50 am
IAD
-
SYD
3 stops36h 00m
Multiple Airlines
Deal found 6/16$1,036
This Trip.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/166:15 am
SYD
-
IAD
3 stops40h 05m
Multiple Airlines
Thu 7/239:50 am
IAD
-
SYD
3 stops36h 00m
Multiple Airlines
Deal found 6/18$1,070
This Aunt Betty deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Aunt Betty is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/37:45 pm
SYD
-
IAD
1 stop37h 45m
Air China
Tue 8/1811:00 pm
IAD
-
SYD
1 stop49h 50m
Air China
Deal found 6/13$1,075
This Trip.com deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/156:15 am
SYD
-
IAD
3 stops44h 32m
Multiple Airlines
Fri 7/247:18 pm
IAD
-
SYD
3 stops50h 32m
Multiple Airlines
Deal found 6/16$1,109
This Trip.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/221:15 pm
SYD
-
IAD
3 stops37h 32m
Multiple Airlines
Tue 7/289:50 am
IAD
-
SYD
3 stops46h 20m
Multiple Airlines
Deal found 6/17$1,114
This Trip.com deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/291:25 pm
MEL
-
IAD
3 stops37h 22m
Multiple Airlines
Wed 8/57:48 am
IAD
-
MEL
3 stops38h 12m
Multiple Airlines
Deal found 6/14$1,149
This Trip.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/171:15 pm
SYD
-
IAD
3 stops37h 11m
Multiple Airlines
Fri 7/249:50 am
IAD
-
SYD
3 stops46h 20m
Multiple Airlines
Deal found 6/17$1,150
This Air China deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air China is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/277:40 pm
MEL
-
IAD
1 stop37h 50m
Air China
Tue 8/1811:00 pm
IAD
-
MEL
1 stop49h 55m
Air China
Deal found 6/14$1,175
This Air China deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air China is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/277:45 pm
SYD
-
IAD
1 stop37h 45m
Multiple Airlines
Wed 8/128:30 am
IAD
-
SYD
2 stops40h 20m
Multiple Airlines
Deal found 6/14$1,177
This Air China deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air China is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/37:45 pm
SYD
-
IAD
1 stop37h 45m
Air China
Fri 8/2111:00 pm
IAD
-
SYD
1 stop49h 50m
Air China
Deal found 6/13$1,180
This Trip.com deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1711:35 am
BNE
-
IAD
3 stops38h 51m
Multiple Airlines
Fri 7/249:50 am
IAD
-
BNE
3 stops34h 45m
Multiple Airlines
Deal found 6/16$1,211

Find flight deals from Australia to Dulles Intl

Keep the following information in mind while searching for Australia to Dulles Intl flight deals. Data was last updated June 18, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,007
(Trip.com)

One-way from

$745
(Booking.com)

Popular in

December

Cheapest in

August

Average price

$1,355
Provider with most accurate pricing for Sydney Kingsford Smith-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Sydney Kingsford Smith-Washington, D.C. (WAS) flights.
Search Deals
From Australia to Washington, D.C. Dulles Intl
Search Deals
One-way flight from Australia to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($37 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($29 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Australia to Dulles Intl 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, Cheapflights users made 2,558,603 searches. Data last updated June 18, 2026.
Use the filters below to find and compare flights from Australia to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Wed 9/9

11:55 am-5:40 am

2 stops31h 45m

Washington, D.C. Dulles Intl

Sun 9/20

6:42 am-8:45 am

2 stops36h 03m

$1,370

PerthWashington, D.C.

PER - IAD

PERIAD

Perth

Sat 9/19

5:35 am-11:05 am

3 stops41h 30m

Washington, D.C. Dulles Intl

Sat 10/24

1:15 pm-4:15 am

3 stops51h 00m

$1,390

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Sun 8/23

8:45 pm-6:14 pm

2 stops35h 29m

Washington, D.C. Dulles Intl

Thu 8/27

5:47 pm-6:50 pm

2 stops35h 03m

$1,480

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Tue 8/4

9:55 am-12:55 am

2 stops29h 00m

Washington, D.C. Dulles Intl

Tue 8/11

5:48 pm-8:45 am

2 stops24h 57m

$1,524

BrisbaneWashington, D.C.

BNE - IAD

BNEIAD

Brisbane

Sun 11/1

1:10 pm-6:00 am

1 stop30h 50m

Washington, D.C. Dulles Intl

Sun 11/15

5:03 pm-6:30 am

1 stop22h 27m

$1,630

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Wed 9/9

9:20 am-6:30 am

1 stop35h 10m

Washington, D.C. Dulles Intl

Tue 9/22

8:29 am-7:20 am

1 stop32h 51m

$1,698

MelbourneWashington, D.C.

MEL - IAD

MELIAD

Melbourne

Thu 8/6

1:30 pm-6:27 pm

2 stops42h 57m

Washington, D.C. Dulles Intl

Sat 10/31

6:10 am-12:20 pm

2 stops39h 10m

$1,761

BrisbaneWashington, D.C.

BNE - IAD

BNEIAD

Brisbane

Tue 8/18

10:15 am-8:24 pm

2 stops24h 09m

Washington, D.C. Dulles Intl

Tue 8/25

12:43 pm-7:05 am

2 stops28h 22m

$1,812

MelbourneWashington, D.C.

MEL - IAD

MELIAD

Melbourne

Wed 8/12

10:55 am-7:05 pm

1 stop22h 10m

Washington, D.C. Dulles Intl

Wed 11/25

2:36 pm-10:00 am

1 stop27h 24m

$1,824

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Mon 12/7

12:10 pm-9:27 pm

1 stop25h 17m

Washington, D.C. Dulles Intl

Sun 12/27

5:55 pm-9:15 am

1 stop23h 20m

$1,830

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/17

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Australia to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Australia with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Australia to Washington, D.C. Dulles Intl Airport

What is the cheapest month to book a flight from Australia to Washington, D.C. Dulles Intl Airport?

Currently, October is the cheapest month in which you can book a flight from Australia to Washington, D.C. Dulles Intl Airport (average of $257). Flying from Australia to Washington, D.C. Dulles Intl Airport in September is currently the most expensive (average of $1,043). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How far ahead should I book a flight from Australia to Washington, D.C. Dulles Intl Airport?

The price you pay for your flight from Australia to Washington, D.C. Dulles Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 7 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Related info for your journey

Find useful and relevant information for your journey from Australia to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Australia to Washington, D.C. Dulles Intl Airport?

    A quick flight from Australia to Washington, D.C. Dulles Intl Airport can take about 24h 09m. Air New Zealand provides one of the quickest options available for as low as $1,812. Airlines will cover a distance of 9439 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the most popular routes from Australia to Washington, D.C. Dulles Intl Airport?

    While some choose either Melbourne - Washington, D.C. Dulles Intl or Brisbane - Washington, D.C. Dulles Intl, Sydney Kingsford Smith - Washington, D.C. Dulles Intl is the most popular route from Australia to Washington, D.C. Dulles Intl Airport.

  • Can I find deals for flights from Australia to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Australia to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Australia to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Australia to Dulles Intl.

  • Can I find deals for business class flights from Australia to Dulles Intl?

    Yes. Cheapflights offers flight deals from Australia to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Australia to Washington, D.C. Dulles Intl Airport?

    Currently, October is the cheapest month in which you can book a flight from Australia to Washington, D.C. Dulles Intl Airport (average of $257). Flying from Australia to Washington, D.C. Dulles Intl Airport in September is currently the most expensive (average of $1,043). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Arlington
Tysons
Owings Mills
Springfield
Lanham
Reston
Herndon
Rockville
Hyattsville
Manassas
Fredericksburg
Laurel
Hanover
Chantilly
Falls Church
Waldorf
Silver Spring
Largo
Clinton

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Alternative routes for Australia to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
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