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$460+ 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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SYD
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Find 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 October 30, 2025.

This Travelocity deal was found by Cheapflights users on 10/29. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/259:45 amIAD - BNE
2 stops32h 00mAir Canada
Tue 12/210:45 amBNE - IAD
2 stops39h 38mAir Canada
Deal found 10/29$765
This Air Canada deal was found by Cheapflights users on 10/30. 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 11/1812:42 pmIAD - BNE
2 stops29h 03mAir Canada
Tue 12/210:45 amBNE - IAD
2 stops49h 37mAir Canada
Deal found 10/30$823
This Air Canada deal was found by Cheapflights users on 10/30. 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 11/189:45 amIAD - BNE
2 stops32h 00mAir Canada
Fri 11/2810:45 amBNE - IAD
2 stops44h 24mAir Canada
Deal found 10/30$826
This Air Canada deal was found by Cheapflights users on 10/29. 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 11/201:20 pmIAD - BNE
2 stops28h 25mAir Canada
Thu 11/2710:45 amBNE - IAD
2 stops39h 38mAir Canada
Deal found 10/29$828
This Air Canada deal was found by Cheapflights users on 10/29. 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 11/174:30 pmIAD - BNE
2 stops49h 15mAir Canada
Thu 11/2710:45 amBNE - IAD
2 stops39h 38mAir Canada
Deal found 10/29$832
This Travelocity deal was found by Cheapflights users on 10/28. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2610:11 pmIAD - ADL
3 stops48h 24mMultiple Airlines
Wed 12/37:55 pmADL - IAD
3 stops55h 20mMultiple Airlines
Deal found 10/28$975
This Air Canada deal was found by Cheapflights users on 10/29. 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 12/19:45 amIAD - BNE
2 stops32h 00mAir Canada
Fri 12/1210:45 amBNE - IAD
2 stops39h 38mAir Canada
Deal found 10/29$1,034
This Expedia deal was found by Cheapflights users on 10/30. 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.
Wed 11/199:45 amIAD - BNE
2 stops32h 00mAir Canada
Sat 11/2910:45 amBNE - IAD
2 stops25h 37mAir Canada
Deal found 10/30$1,035
This Air Canada deal was found by Cheapflights users on 10/29. 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 11/181:20 pmIAD - BNE
2 stops28h 25mAir Canada
Tue 11/2510:45 amBNE - IAD
2 stops25h 37mAir Canada
Deal found 10/29$1,089
This Air Canada deal was found by Cheapflights users on 10/30. 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 11/1812:42 pmIAD - BNE
2 stops29h 03mAir Canada
Wed 11/2610:45 amBNE - IAD
2 stops25h 37mAir Canada
Deal found 10/30$1,090
This Air Canada deal was found by Cheapflights users on 10/29. 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 11/159:45 amIAD - BNE
2 stops32h 00mAir Canada
Tue 11/2510:45 amBNE - IAD
2 stops25h 37mAir Canada
Deal found 10/29$1,092
This Air Canada deal was found by Cheapflights users on 10/30. 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 11/201:20 pmIAD - BNE
2 stops28h 25mAir Canada
Wed 11/2610:45 amBNE - IAD
2 stops25h 37mAir Canada
Deal found 10/30$1,093

Cheap 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 October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$765
(Travelocity)

One-way from

$460
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$1,447
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. 22% potential increase in price ($350 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($54 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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 October 30, 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.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Sat 2/21

10:09 pm-1:55 pm

3 stops48h 16m

Adelaide

Wed 2/25

7:55 pm-8:29 pm

3 stops40h 04m

$1,185

Washington, D.C.Perth

IAD - PER

IADPER

Washington, D.C. Dulles Intl

Mon 12/1

8:05 pm-7:45 pm

2 stops34h 40m

Perth

Sun 12/7

6:30 pm-3:55 pm

2 stops34h 25m

$1,242

Washington, D.C.Brisbane

IAD - BNE

IADBNE

Washington, D.C. Dulles Intl

Wed 11/19

6:03 pm-7:30 am

1 stop22h 27m

Brisbane

Tue 11/25

11:40 am-4:27 pm

1 stop19h 47m

$1,259

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Wed 12/3

4:00 pm-9:05 am

2 stops25h 05m

Sydney Kingsford Smith

Wed 12/17

11:20 am-4:26 pm

1 stop21h 06m

$1,263

Washington, D.C.Brisbane

IAD - BNE

IADBNE

Washington, D.C. Dulles Intl

Sat 11/22

10:10 pm-7:30 am

1 stop42h 20m

Brisbane

Wed 11/26

11:40 am-6:52 pm

2 stops22h 12m

$1,277

Washington, D.C.Brisbane

IAD - BNE

IADBNE

Washington, D.C. Dulles Intl

Sun 11/16

12:35 pm-7:30 am

1 stop27h 55m

Brisbane

Fri 11/28

11:40 am-12:56 am

1 stop28h 16m

$1,309

Washington, D.C.Brisbane

IAD - BNE

IADBNE

Washington, D.C. Dulles Intl

Tue 11/18

3:25 pm-7:30 am

1 stop25h 05m

Brisbane

Thu 11/27

11:40 am-9:25 pm

1 stop24h 45m

$1,309

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Thu 1/22

12:35 pm-6:20 am

2 stops25h 45m

Sydney Kingsford Smith

Sun 2/1

2:00 pm-9:19 pm

2 stops23h 19m

$1,318

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 11/11

6:59 pm-9:05 am

1 stop22h 06m

Sydney Kingsford Smith

Wed 12/10

11:50 am-8:42 pm

1 stop24h 52m

$1,338

Washington, D.C.Brisbane

IAD - BNE

IADBNE

Washington, D.C. Dulles Intl

Fri 11/14

2:25 pm-7:30 am

2 stops26h 05m

Brisbane

Sat 12/6

11:40 am-7:26 pm

1 stop22h 46m

$1,359

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

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 $339). Flying from Washington, D.C. Dulles Intl Airport to Australia in April is currently the most expensive (average of $836). 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 October 30, 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 October 30, 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
520 reviews

Comfort

8.0

Entertainment

7.5

Food

7.4

Overall

8.0

Crew

8.6

Boarding

8.2

Reviews

1 / 20
6.0
Good

Anonymous,Jul 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.
Air New Zealand
8.0
Very good
520 reviews
Air New Zealand
8.0
Very good
520 reviews

Comfort

8.0

Entertainment

7.5

Food

7.4

Overall

8.0

Crew

8.6

Boarding

8.2

Reviews

1 / 20
6.0
Good

Anonymous,Jul 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.
Qantas Airways
7.5
Good
925 reviews
Air New Zealand
8.0
Very good
520 reviews

Comfort

8.0

Entertainment

7.5

Food

7.4

Overall

8.0

Crew

8.6

Boarding

8.2

Reviews

1 / 20
6.0
Good

Anonymous,Jul 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.
United Airlines
7.4
Good
8,998 reviews
Air New Zealand
8.0
Very good
520 reviews

Comfort

8.0

Entertainment

7.5

Food

7.4

Overall

8.0

Crew

8.6

Boarding

8.2

Reviews

1 / 20
6.0
Good

Anonymous,Jul 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.
American Airlines
7.2
Good
11,032 reviews
Air New Zealand
8.0
Very good
520 reviews

Comfort

8.0

Entertainment

7.5

Food

7.4

Overall

8.0

Crew

8.6

Boarding

8.2

Reviews

1 / 20
6.0
Good

Anonymous,Jul 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.
Air Canada
7.1
Good
10,378 reviews
Air New Zealand
8.0
Very good
520 reviews

Comfort

8.0

Entertainment

7.5

Food

7.4

Overall

8.0

Crew

8.6

Boarding

8.2

Reviews

1 / 20
6.0
Good

Anonymous,Jul 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.

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 22h 27m. The distance from Washington, D.C. Dulles Intl Airport to Australia is about 9439 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?

    $771 is the cheapest one-way deal found within the past few days, from Alaska Airlines. You may also be able to find cheap deals on Cathay Pacific and United Airlines, with prices starting from $774 and $932, 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 $339). Flying from Washington, D.C. Dulles Intl Airport to Australia in April is currently the most expensive (average of $836). 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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$327Average$1,701FlexibilityNo cancel feeOn-time69%
DeltaCheapest$609Average$935FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$674Average$1,049FlexibilityNo cancel feeOn-time71%
Qantas AirwaysCheapest$677Average$1,205FlexibilityNo cancel feeOn-time74%
Air CanadaCheapest$854Average$1,450FlexibilityNo cancel feeOn-time67%
Air New ZealandCheapest$1,257Average$1,763FlexibilityNo cancel feeOn-time78%
ANACheapest$1,370Average$1,586FlexibilityNo cancel feeOn-time80%
Qatar AirwaysCheapest$1,961Average$2,163FlexibilityNo cancel feeOn-time68%

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