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$546+ 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 1/15. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SYD
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
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 December 18, 2025.

This American Airlines deal was found by Cheapflights users on 12/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/289:12 amIAD - SYD
2 stops30h 13mAmerican Airlines
Sun 2/1511:20 amSYD - IAD
2 stops27h 28mAmerican Airlines
Deal found 12/17$1,427
This American Airlines deal was found by Cheapflights users on 12/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/251:57 pmIAD - SYD
2 stops27h 03mAmerican Airlines
Sat 1/1711:20 amSYD - IAD
2 stops25h 57mAmerican Airlines
Deal found 12/17$1,576
This Air Canada deal was found by Cheapflights users on 12/16. 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.
Sun 12/289:00 amIAD - SYD
2 stops32h 35mAir Canada
Sun 2/1511:20 amSYD - IAD
2 stops25h 34mAir Canada
Deal found 12/16$1,721
This Air Canada deal was found by Cheapflights users on 12/16. 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.
Sun 12/289:00 amIAD - SYD
2 stops32h 35mAir Canada
Wed 2/1111:20 amSYD - IAD
3 stops40h 09mAir Canada
Deal found 12/16$1,727
This FlightHub deal was found by Cheapflights users on 12/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2510:06 pmIAD - SYD
2 stops43h 29mAir Canada
Sun 1/1811:20 amSYD - IAD
2 stops26h 05mAir Canada
Deal found 12/16$1,771
This Air Canada deal was found by Cheapflights users on 12/17. 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 12/309:45 amIAD - BNE
2 stops32h 00mAir Canada
Fri 1/1610:45 amBNE - IAD
2 stops25h 09mAir Canada
Deal found 12/17$1,804
This Cathay Pacific deal was found by Cheapflights users on 12/16. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/236:07 pmIAD - MEL
2 stops45h 03mMultiple Airlines
Fri 1/238:40 amMEL - IAD
2 stops47h 51mMultiple Airlines
Deal found 12/16$1,830
This Air Canada deal was found by Cheapflights users on 12/17. 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 12/295:16 pmIAD - BNE
2 stops24h 29mAir Canada
Mon 1/1910:45 amBNE - IAD
2 stops25h 09mAir Canada
Deal found 12/17$1,847
This United Airlines deal was found by Cheapflights users on 12/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:01 pmIAD - MEL
1 stop23h 59mUnited Airlines
Wed 1/141:00 pmMEL - IAD
1 stop22h 35mUnited Airlines
Deal found 12/17$1,856
This United Airlines deal was found by Cheapflights users on 12/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2912:35 pmIAD - BNE
1 stop27h 55mUnited Airlines
Mon 1/1911:40 amBNE - IAD
1 stop28h 19mUnited Airlines
Deal found 12/17$1,859
This United Airlines deal was found by Cheapflights users on 12/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2412:35 pmIAD - SYD
1 stop25h 45mUnited Airlines
Wed 1/711:20 amSYD - IAD
2 stops34h 01mUnited Airlines
Deal found 12/16$1,868
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:05 amIAD - SYD
2 stops32h 50mMultiple Airlines
Mon 1/128:40 pmSYD - IAD
1 stop37h 50mMultiple Airlines
Deal found 12/16$1,901

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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

Gurufare
3 stars

Round-trip from

$983
(American Airlines)

One-way from

$546
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$1,663
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.
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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. 16% potential increase in price ($225 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($45 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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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 December 18, 2025.
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

Dulles Intl

Fly to

Australia

Route

Depart

Return

Price

Washington, D.C.Brisbane

IAD - BNE

IADBNE

Washington, D.C. Dulles Intl

Sun 2/1

4:11 pm-8:45 am

2 stops25h 34m

Brisbane

Sun 2/8

6:10 am-8:29 pm

3 stops29h 19m

$1,024

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Tue 3/10

12:33 pm-12:40 pm

3 stops33h 37m

Adelaide

Thu 3/19

6:00 am-8:26 pm

3 stops28h 56m

$1,086

Washington, D.C.Brisbane

IAD - BNE

IADBNE

Washington, D.C. Dulles Intl

Tue 1/27

9:45 am-8:45 am

2 stops32h 00m

Brisbane

Tue 2/24

6:10 am-8:29 pm

3 stops29h 19m

$1,089

Washington, D.C.Brisbane

IAD - BNE

IADBNE

Washington, D.C. Dulles Intl

Fri 1/30

2:10 pm-8:45 am

2 stops27h 35m

Brisbane

Fri 2/6

10:45 am-11:35 am

2 stops39h 50m

$1,089

Washington, D.C.Brisbane

IAD - BNE

IADBNE

Washington, D.C. Dulles Intl

Thu 2/26

12:33 pm-1:30 pm

3 stops33h 57m

Brisbane

Sun 3/8

10:45 am-8:21 pm

2 stops24h 36m

$1,141

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Thu 2/12

12:33 pm-9:35 am

2 stops29h 02m

Sydney Kingsford Smith

Sat 2/21

11:20 am-8:54 pm

2 stops25h 34m

$1,155

Washington, D.C.Brisbane

IAD - BNE

IADBNE

Washington, D.C. Dulles Intl

Sat 2/28

10:13 pm-8:45 am

2 stops43h 32m

Brisbane

Wed 3/4

10:45 am-11:44 am

2 stops39h 59m

$1,172

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sat 4/11

5:26 pm-6:55 am

1 stop23h 29m

Sydney Kingsford Smith

Sat 4/25

12:00 pm-10:19 pm

1 stop24h 19m

$1,185

Washington, D.C.Melbourne

IAD - MEL

IADMEL

Washington, D.C. Dulles Intl

Wed 3/18

3:45 pm-9:00 am

2 stops26h 15m

Melbourne

Mon 4/20

10:55 am-9:19 pm

2 stops24h 24m

$1,197

Washington, D.C.Melbourne

IAD - AVV

IADAVV

Washington, D.C. Dulles Intl

Tue 2/10

12:35 pm-8:20 pm

3 stops39h 45m

Melbourne Avalon

Wed 2/25

6:00 am-9:21 pm

3 stops31h 21m

$1,199

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 60 results
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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 $329). Flying from Washington, D.C. Dulles Intl Airport to Australia in May is currently the most expensive (average of $835). 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.

What is the cheapest time of day to fly from IAD to AU?

Find hourly flight availability from Dulles Intl to Australia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

One of the essential ways to save on airfare from Washington, D.C. Dulles Intl Airport to Australia is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the afternoon could potentially save you up to 21% on airfare.

What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to Australia?

Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to Australia. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Australia flight should consider departing on Tuesday at noon when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 December 18, 2025.
Get a feel of what it's like to fly with Air New Zealand, Qantas Airways, and United Airlines 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
553 reviews

Entertainment

7.5

Food

7.4

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

BNE - AKL

I couldn’t operate reclining the seat. Neither could the passenger next to mec or the passenger across the aisle. This was in premium economy. We all tried following screen instructions but had no luck. Not really a problem on a 3 hour flight but any longer………
Air New Zealand
8.0
Very good
553 reviews
Air New Zealand
8.0
Very good
553 reviews

Entertainment

7.5

Food

7.4

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

BNE - AKL

I couldn’t operate reclining the seat. Neither could the passenger next to mec or the passenger across the aisle. This was in premium economy. We all tried following screen instructions but had no luck. Not really a problem on a 3 hour flight but any longer………
Qantas Airways
7.5
Good
947 reviews
Air New Zealand
8.0
Very good
553 reviews

Entertainment

7.5

Food

7.4

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

BNE - AKL

I couldn’t operate reclining the seat. Neither could the passenger next to mec or the passenger across the aisle. This was in premium economy. We all tried following screen instructions but had no luck. Not really a problem on a 3 hour flight but any longer………
United Airlines
7.4
Good
9,093 reviews
Air New Zealand
8.0
Very good
553 reviews

Entertainment

7.5

Food

7.4

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

BNE - AKL

I couldn’t operate reclining the seat. Neither could the passenger next to mec or the passenger across the aisle. This was in premium economy. We all tried following screen instructions but had no luck. Not really a problem on a 3 hour flight but any longer………
American Airlines
7.2
Good
11,055 reviews
Air New Zealand
8.0
Very good
553 reviews

Entertainment

7.5

Food

7.4

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

BNE - AKL

I couldn’t operate reclining the seat. Neither could the passenger next to mec or the passenger across the aisle. This was in premium economy. We all tried following screen instructions but had no luck. Not really a problem on a 3 hour flight but any longer………
Air Canada
7.1
Good
10,534 reviews
Air New Zealand
8.0
Very good
553 reviews

Entertainment

7.5

Food

7.4

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

BNE - AKL

I couldn’t operate reclining the seat. Neither could the passenger next to mec or the passenger across the aisle. This was in premium economy. We all tried following screen instructions but had no luck. Not really a problem on a 3 hour flight but any longer………

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 23h 29m. The distance from Washington, D.C. Dulles Intl Airport to Australia is about 9737 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?

    $395 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Qantas Airways and United Airlines, with prices starting from $401 and $462, 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 - Melbourne Avalon, 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 $329). Flying from Washington, D.C. Dulles Intl Airport to Australia in May is currently the most expensive (average of $835). 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

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Alternative routes for Dulles Intl to Australia

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Dulles Intl to Australia

Discover the top 8 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$327Average$1,746FlexibilityNo cancel feeOn-time69%
DeltaCheapest$544Average$935FlexibilityNo cancel feeOn-timeN/A
Qantas AirwaysCheapest$682Average$1,222FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$825Average$1,014FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$839Average$1,360FlexibilityNo cancel feeOn-time67%
Air New ZealandCheapest$1,257Average$1,783FlexibilityNo cancel feeOn-time78%
ANACheapest$1,370Average$1,493FlexibilityNo cancel feeOn-time80%
Qatar AirwaysCheapest$1,961Average$2,235FlexibilityNo cancel feeOn-time68%

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