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$510+ Cheap flights from Dulles Intl (IAD) to Australia

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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SYD
Apr 18 — Apr 251
Sat 4/18
Sat 4/25
1 adult, Economy
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Cheap flight deals from Dulles Intl to Australia

Cheapest flights from Dulles Intl to Australia
Explore the most affordable flight options available from Dulles Intl to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 19, 2026.

This lol.travel deal was found by Cheapflights users on 3/15. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/299:55 am
IAD
-
BNE
2 stops31h 10m
Air Canada
Wed 5/610:00 am
BNE
-
IAD
2 stops24h 29m
Air Canada
Deal found 3/15$947
This Air Canada deal was found by Cheapflights users on 3/15. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/92:36 pm
IAD
-
BNE
2 stops26h 29m
Multiple Airlines
Tue 5/1910:15 am
BNE
-
IAD
2 stops39h 02m
Multiple Airlines
Deal found 3/15$991
This Air Canada deal was found by Cheapflights users on 3/17. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/112:44 pm
IAD
-
BNE
2 stops28h 21m
Air Canada
Mon 6/810:00 am
BNE
-
IAD
1 stop34h 22m
Air Canada
Deal found 3/17$1,007
This Air Canada deal was found by Cheapflights users on 3/17. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/54:05 pm
IAD
-
ADL
3 stops30h 15m
Air Canada
Tue 6/96:55 pm
ADL
-
IAD
2 stops48h 57m
Air Canada
Deal found 3/17$1,019
This Expedia deal was found by Cheapflights users on 3/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/69:55 am
IAD
-
BNE
2 stops31h 10m
Air Canada
Wed 5/2010:00 am
BNE
-
IAD
2 stops24h 29m
Air Canada
Deal found 3/14$1,025
This Gurufare deal was found by Cheapflights users on 3/16. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/912:38 pm
IAD
-
BNE
2 stops52h 27m
Multiple Airlines
Thu 5/2110:15 am
BNE
-
IAD
2 stops24h 58m
Multiple Airlines
Deal found 3/16$1,030
This Air Canada deal was found by Cheapflights users on 3/16. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/3010:08 pm
IAD
-
BNE
2 stops42h 57m
Air Canada
Thu 5/710:00 am
BNE
-
IAD
2 stops39h 17m
Air Canada
Deal found 3/16$1,031
This BusinessClass deal was found by Cheapflights users on 3/16. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/912:38 pm
IAD
-
BNE
2 stops52h 27m
Singapore Airlines
Thu 5/2110:15 am
BNE
-
IAD
2 stops24h 58m
Singapore Airlines
Deal found 3/16$1,035
This Air Canada deal was found by Cheapflights users on 3/15. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/114:05 pm
IAD
-
ADL
3 stops32h 20m
Multiple Airlines
Wed 5/205:15 pm
ADL
-
IAD
2 stops50h 37m
Multiple Airlines
Deal found 3/15$1,056
This Air Canada deal was found by Cheapflights users on 3/17. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/14:05 pm
IAD
-
ADL
3 stops34h 20m
Multiple Airlines
Fri 5/85:15 pm
ADL
-
IAD
3 stops40h 44m
Multiple Airlines
Deal found 3/17$1,099
This Priceline deal was found by Cheapflights users on 3/18. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/249:00 am
IAD
-
ADL
3 stops41h 25m
Air Canada
Wed 6/34:30 pm
ADL
-
IAD
3 stops41h 29m
Air Canada
Deal found 3/18$1,160
This Orbitz deal was found by Cheapflights users on 3/16. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/248:20 am
IAD
-
ADL
3 stops40h 05m
Multiple Airlines
Sat 6/65:15 pm
ADL
-
IAD
2 stops50h 37m
Multiple Airlines
Deal found 3/16$1,165

Find flight deals from Dulles Intl to Australia

Keep the following information in mind while searching for Dulles Intl to Australia flight deals. Data was last updated March 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$947
(lol.travel)

One-way from

$510
(Trip.com)

Popular in

December

Cheapest in

August

Average price

$1,569
Provider with most accurate pricing for Washington, D.C. (WAS)-Sydney Kingsford Smith flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Sydney Kingsford Smith flights.
Search Deals
From Washington, D.C. Dulles Intl to Australia
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Australia
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($67 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Australia 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 March 19, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Australia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Fri 5/1

4:05 pm-3:55 pm

3 stops34h 20m

Adelaide

Fri 5/8

5:15 pm-8:29 pm

3 stops40h 44m

$1,099

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Tue 4/28

12:40 pm-11:15 am

3 stops33h 05m

Adelaide

Tue 5/5

5:15 pm-8:29 pm

3 stops40h 44m

$1,270

Washington, D.C.Melbourne

IAD - AVV

IADAVV

Washington, D.C. Dulles Intl

Mon 4/13

9:00 am-2:10 pm

3 stops39h 10m

Melbourne Avalon

Mon 4/20

8:55 pm-11:14 am

3 stops52h 19m

$1,312

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Fri 4/24

8:20 am-3:55 pm

3 stops42h 05m

Adelaide

Wed 5/6

8:00 pm-9:25 pm

3 stops38h 55m

$1,353

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Thu 4/30

9:00 am-1:55 pm

3 stops39h 25m

Adelaide

Thu 5/7

8:00 pm-8:29 pm

3 stops37h 59m

$1,366

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Sat 5/9

5:17 pm-11:50 am

3 stops53h 03m

Adelaide

Wed 5/13

4:30 pm-3:29 pm

3 stops60h 29m

$1,376

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Tue 4/28

5:59 pm-11:05 am

2 stops27h 36m

Adelaide

Tue 5/5

6:25 am-11:26 pm

2 stops30h 31m

$1,480

Washington, D.C.Melbourne

IAD - MEL

IADMEL

Washington, D.C. Dulles Intl

Sat 5/9

9:45 pm-7:40 pm

2 stops31h 55m

Melbourne

Wed 5/13

9:35 pm-7:50 pm

2 stops36h 15m

$1,485

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Mon 4/13

8:57 am-7:00 am

1 stop32h 03m

Sydney Kingsford Smith

Sun 4/26

10:20 am-1:25 am

1 stop29h 05m

$1,546

Washington, D.C.Melbourne

IAD - MEL

IADMEL

Washington, D.C. Dulles Intl

Mon 4/13

4:10 pm-8:15 am

1 stop26h 05m

Melbourne

Sun 4/26

9:30 am-9:04 pm

2 stops25h 34m

$1,547

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/17

Showing 1-10 of 60 resultsSorted by cheapest first
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6

Best time to book a flight from Dulles Intl to Australia

Have a flexible travel schedule? Discover the best time to fly to Australia from Dulles Intl 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 Washington, D.C. Dulles Intl Airport to Australia

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

Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Australia (average of $309). Flying from Washington, D.C. Dulles Intl Airport to Australia in April is currently the most expensive (average of $1,047). 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.

Reviews of airlines servicing Australia

Get insights into the airlines that provide service to Australia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Australia. Reviews last updated March 19, 2026.
Get a feel of what it's like to fly with Air New Zealand,Delta, andQantas Airways from Washington, D.C. Dulles Intl Airport to Australia by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air New Zealand
8.0
Very good
615 reviews

Comfort

8.0

Food

7.4

Entertainment

7.4

Boarding

8.2

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Debra,Mar 2026

HNL - AKL

My seat was very comfortable. The movies were good. The food was delicious. It ran on time.
Air New Zealand
8.0
Very good
615 reviews
Air New Zealand
8.0
Very good
615 reviews

Comfort

8.0

Food

7.4

Entertainment

7.4

Boarding

8.2

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Debra,Mar 2026

HNL - AKL

My seat was very comfortable. The movies were good. The food was delicious. It ran on time.
Delta
7.9
Good
8,293 reviews
Air New Zealand
8.0
Very good
615 reviews

Comfort

8.0

Food

7.4

Entertainment

7.4

Boarding

8.2

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Debra,Mar 2026

HNL - AKL

My seat was very comfortable. The movies were good. The food was delicious. It ran on time.
Qantas Airways
7.5
Good
1,006 reviews
Air New Zealand
8.0
Very good
615 reviews

Comfort

8.0

Food

7.4

Entertainment

7.4

Boarding

8.2

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Debra,Mar 2026

HNL - AKL

My seat was very comfortable. The movies were good. The food was delicious. It ran on time.
United Airlines
7.4
Good
9,440 reviews
Air New Zealand
8.0
Very good
615 reviews

Comfort

8.0

Food

7.4

Entertainment

7.4

Boarding

8.2

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Debra,Mar 2026

HNL - AKL

My seat was very comfortable. The movies were good. The food was delicious. It ran on time.
Air Canada
7.1
Good
10,815 reviews
Air New Zealand
8.0
Very good
615 reviews

Comfort

8.0

Food

7.4

Entertainment

7.4

Boarding

8.2

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Debra,Mar 2026

HNL - AKL

My seat was very comfortable. The movies were good. The food was delicious. It ran on time.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Australia. 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 Washington, D.C. Dulles Intl Airport to Australia?

    Departing from Washington, D.C. Dulles Intl Airport to Australia will take you 31h 55m. The distance from Washington, D.C. Dulles Intl Airport to Australia is about 10156 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Australia one-way?

    $459 is the cheapest one-way deal found within the past few days, from Qantas Airways. You may also be able to find cheap deals on Delta and United Airlines, with prices starting from $632 and $794, respectively.

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

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

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl to Australia 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 Washington, D.C. Dulles Intl Airport to Australia?

    Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Australia (average of $309). Flying from Washington, D.C. Dulles Intl Airport to Australia in April is currently the most expensive (average of $1,047). 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

Browse thousands of different options on Cheapflights for your next trip

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Top 7 airlines flying from Dulles Intl to Australia

Discover the top 7 airlines that operate flights from Dulles Intl to Australia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$377Average$1,631FlexibilityNo cancel feeOn-time69%
DeltaCheapest$544Average$943FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$839Average$1,214FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$855Average$1,549FlexibilityNo cancel feeOn-time71%
Qantas AirwaysCheapest$898Average$1,471FlexibilityNo cancel feeOn-time74%
Air New ZealandCheapest$1,195Average$1,688FlexibilityNo cancel feeOn-time78%
Qatar AirwaysCheapest$1,961Average$2,378FlexibilityNo cancel feeOn-time68%

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