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$513+ Cheap flights from Washington, D.C. (WAS) 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 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SYD
Aug 21 — Aug 281
Thu 8/21
Thu 8/28
1 adult, Economy
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Cheap flight deals from Washington, D.C. to Australia

Keep the following information in mind while searching for Washington, D.C. to Australia flight deals. Data was last updated August 16, 2025.

Round-trip from

$1,004
(Trip.com)

One-way from

$513
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$865
From Washington, D.C. (WAS) to Australia
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One-way flight from Washington, D.C. (WAS) to Australia
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Highest demand for flights based on searches. 23% potential increase in price ($365 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($55 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Washington, D.C. to Australia

Cheapest flights from Washington, D.C. to Australia
Explore the most affordable flight options available from Washington, D.C. to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 16, 2025.

This Air Canada deal was found by Cheapflights users on 8/13. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/219:35 amIAD - SYD
2 stops31h 45mAir Canada
Sun 10/2610:20 amSYD - IAD
2 stops25h 39mAir Canada
Deal found 8/13$835
This Trip.com deal was found by Cheapflights users on 8/13. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/285:45 amBWI - MEL
2 stops40h 40mMultiple Airlines
Sun 10/52:30 pmMEL - BWI
2 stops31h 05mMultiple Airlines
Deal found 8/13$1,004
This Air Canada deal was found by Cheapflights users on 8/13. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/510:11 pmIAD - SYD
2 stops43h 24mAir Canada
Wed 11/1211:20 amSYD - IAD
2 stops40h 03mAir Canada
Deal found 8/13$1,005
This FlightHub deal was found by Cheapflights users on 8/14. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/83:23 pmBWI - BNE
1 stop24h 07mQantas Airways
Sat 11/229:40 amBNE - BWI
1 stop19h 50mQantas Airways
Deal found 8/14$1,021
This Trip.com deal was found by Cheapflights users on 8/14. 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.
Sat 9/137:00 amIAD - SYD
2 stops34h 05mMultiple Airlines
Sat 9/2012:10 pmSYD - IAD
2 stops25h 45mMultiple Airlines
Deal found 8/14$1,024
This Mytrip deal was found by Cheapflights users on 8/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/94:27 pmBWI - MEL
3 stops29h 33mMultiple Airlines
Tue 9/161:25 pmMEL - BWI
2 stops31h 36mMultiple Airlines
Deal found 8/14$1,042
This Cheapflightsfares deal was found by Cheapflights users on 8/13. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/53:23 pmBWI - BNE
1 stop24h 07mQantas Airways
Sun 11/169:40 amBNE - BWI
1 stop19h 50mQantas Airways
Deal found 8/13$1,055
This Trip.com deal was found by Cheapflights users on 8/14. 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 9/109:15 amIAD - SYD
2 stops31h 50mMultiple Airlines
Sun 9/2112:10 pmSYD - IAD
2 stops26h 05mMultiple Airlines
Deal found 8/14$1,056
This Trip.com deal was found by Cheapflights users on 8/14. 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.
Sun 10/196:15 amIAD - SYD
2 stops34h 15mMultiple Airlines
Sat 11/11:20 pmSYD - IAD
2 stops25h 35mMultiple Airlines
Deal found 8/14$1,066
This Trip.com deal was found by Cheapflights users on 8/13. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/126:10 amIAD - SYD
2 stops34h 55mMultiple Airlines
Fri 9/1912:10 pmSYD - IAD
2 stops26h 05mMultiple Airlines
Deal found 8/13$1,067
This Mytrip deal was found by Cheapflights users on 8/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/149:57 amBWI - SYD
3 stops35h 48mMultiple Airlines
Sun 9/211:15 pmSYD - BWI
2 stops31h 46mMultiple Airlines
Deal found 8/15$1,067
This United Airlines deal was found by Cheapflights users on 8/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/810:10 amBWI - BNE
2 stops30h 20mUnited Airlines
Sat 11/2211:40 amBNE - BWI
2 stops26h 17mUnited Airlines
Deal found 8/15$1,071

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. 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 August 16, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Australia that are best for you.

Fly from

Washington, D.C.

Fly to

Australia

Route

Depart

Return

Price

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 10/21

9:35 am-8:20 am

2 stops31h 45m

Sydney Kingsford Smith

Sun 10/26

10:20 am-8:59 pm

2 stops25h 39m

$835

BaltimoreMelbourne

BWI - MEL

BWIMEL

Baltimore/Washington

Sun 9/28

5:45 am-12:25 pm

2 stops40h 40m

Melbourne

Sun 10/5

2:30 pm-6:35 am

2 stops31h 05m

$1,004

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Wed 11/5

10:11 pm-9:35 am

2 stops43h 24m

Sydney Kingsford Smith

Wed 11/12

11:20 am-11:23 am

2 stops40h 03m

$1,005

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Wed 11/5

10:11 pm-9:35 am

2 stops43h 24m

Sydney Kingsford Smith

Wed 11/19

11:20 am-11:23 am

2 stops40h 03m

$1,005

BaltimoreBrisbane

BWI - BNE

BWIBNE

Baltimore/Washington

Sat 11/8

3:23 pm-6:30 am

1 stop24h 07m

Brisbane

Sat 11/22

9:40 am-2:30 pm

1 stop19h 50m

$1,021

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sat 9/13

7:00 am-7:05 am

2 stops34h 05m

Sydney Kingsford Smith

Sat 9/20

12:10 pm-11:55 pm

2 stops25h 45m

$1,024

BaltimoreMelbourne

BWI - MEL

BWIMEL

Baltimore/Washington

Tue 9/9

4:27 pm-12:00 pm

3 stops29h 33m

Melbourne

Tue 9/16

1:25 pm-7:01 am

2 stops31h 36m

$1,042

BaltimoreBrisbane

BWI - BNE

BWIBNE

Baltimore/Washington

Wed 11/5

3:23 pm-6:30 am

1 stop24h 07m

Brisbane

Sun 11/16

9:40 am-2:30 pm

1 stop19h 50m

$1,055

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Wed 9/10

9:15 am-7:05 am

2 stops31h 50m

Sydney Kingsford Smith

Sun 9/21

12:10 pm-12:15 am

2 stops26h 05m

$1,056

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sun 10/19

6:15 am-7:30 am

2 stops34h 15m

Sydney Kingsford Smith

Sat 11/1

1:20 pm-11:55 pm

2 stops25h 35m

$1,066

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Showing 1-10 of 60 results
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Best time to book a flight from Washington, D.C. to Australia

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

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

Currently, February is the cheapest month in which you can book a flight from Washington, D.C. to Australia (average of $1,031). Flying from Washington, D.C. to Australia in December is currently the most expensive (average of $1,619). 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 WAS to AU?

Find hourly flight availability from Washington, D.C. 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 August 16, 2025.

When flying from Washington, D.C. to Australia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 August 16, 2025.
See what other customers who have flown with Delta, Qantas Airways, and United Airlines from Washington, D.C. to Australia have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,985 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,985 reviews
Delta
8.0
Very good
7,985 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Qantas Airways
7.5
Good
895 reviews
Delta
8.0
Very good
7,985 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,916 reviews
Delta
8.0
Very good
7,985 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,985 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air Canada
7.1
Good
9,966 reviews
Delta
8.0
Very good
7,985 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

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

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

    The most popular flight routes from Washington, D.C. to Australia are Washington, D.C. Dulles Intl - Sydney Kingsford Smith, Washington, D.C. Dulles Intl - Melbourne and Washington, D.C. Reagan-National - Sydney Kingsford Smith.

  • Can I find deals for flights from Washington, D.C. to Australia that include hotel bookings?

    Yes. In addition to deals on Washington, D.C. to Australia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington, D.C. to Australia?

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

  • Can I find deals for business class flights from Washington, D.C. to Australia?

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

    Currently, February is the cheapest month in which you can book a flight from Washington, D.C. to Australia (average of $1,031). Flying from Washington, D.C. to Australia in December is currently the most expensive (average of $1,619). 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 Washington, D.C. 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 Washington, D.C. to Australia

Discover the top 8 airlines that operate flights from Washington, D.C. 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 August 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$276Average$1,174FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$346Average$1,667FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$672Average$1,083FlexibilityNo cancel feeOn-time71%
Qantas AirwaysCheapest$678Average$1,354FlexibilityNo cancel feeOn-time74%
Air CanadaCheapest$1,036Average$1,388FlexibilityNo cancel feeOn-time67%
Air New ZealandCheapest$1,261Average$1,822FlexibilityNo cancel feeOn-time78%
ANACheapest$1,370Average$1,587FlexibilityNo cancel feeOn-time80%
Qatar AirwaysCheapest$1,506Average$2,089FlexibilityNo cancel feeOn-time68%

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