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$497+ 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 10/19. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SYD
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
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 September 15, 2025.

Round-trip from

$1,002
(Trip.com)

One-way from

$497
(Trip.com)

Popular in

December

Cheapest in

August

Average price

$1,344
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 ($371 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 September 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 September 15, 2025.

This Trip.com deal was found by Cheapflights users on 9/14. 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 50mMultiple Airlines
Fri 10/311:05 pmSYD - IAD
2 stops25h 24mMultiple Airlines
Deal found 9/14$1,002
This Trip.com deal was found by Cheapflights users on 9/13. 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.
Tue 10/2810:00 amBWI - SYD
2 stops30h 00mMultiple Airlines
Tue 11/411:50 amSYD - BWI
1 stop20h 12mMultiple Airlines
Deal found 9/13$1,077
This oojo deal was found by Cheapflights users on 9/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/123:23 pmBWI - SYD
2 stops38h 32mQantas Airways
Wed 11/192:05 pmSYD - BWI
1 stop24h 57mQantas Airways
Deal found 9/14$1,108
This oojo deal was found by Cheapflights users on 9/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/113:23 pmBWI - SYD
1 stop23h 32mQantas Airways
Sun 11/236:05 amSYD - BWI
2 stops28h 12mQantas Airways
Deal found 9/13$1,116
This Justfly.com deal was found by Cheapflights users on 9/14. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/103:20 pmBWI - SYD
1 stop23h 35mQantas Airways
Fri 1/237:05 amSYD - BWI
2 stops22h 52mQantas Airways
Deal found 9/14$1,146
This Alaska Airlines deal was found by Cheapflights users on 9/13. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/257:38 amIAD - SYD
2 stops44h 07mAlaska Airlines
Tue 12/239:40 pmSYD - IAD
2 stops24h 33mAlaska Airlines
Deal found 9/13$1,168
This Alaska Airlines deal was found by Cheapflights users on 9/13. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/266:34 pmIAD - SYD
2 stops57h 11mAlaska Airlines
Mon 12/229:40 pmSYD - IAD
2 stops24h 33mAlaska Airlines
Deal found 9/13$1,170
This Trip.com deal was found by Cheapflights users on 9/13. 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.
Wed 11/58:40 amIAD - BNE
2 stops30h 50mMultiple Airlines
Sun 11/169:40 amBNE - IAD
2 stops29h 31mMultiple Airlines
Deal found 9/13$1,171
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/123:23 pmBWI - SYD
2 stops38h 32mQantas Airways
Wed 11/262:05 pmSYD - BWI
1 stop20h 12mQantas Airways
Deal found 9/14$1,174
This Mytrip deal was found by Cheapflights users on 9/14. 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.
Mon 10/137:50 amBWI - SYD
3 stops33h 55mMultiple Airlines
Mon 10/2011:50 amSYD - BWI
2 stops33h 45mMultiple Airlines
Deal found 9/14$1,176
This Alaska Airlines deal was found by Cheapflights users on 9/13. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/168:53 amIAD - SYD
2 stops43h 52mAlaska Airlines
Thu 10/239:40 pmSYD - IAD
2 stops41h 43mAlaska Airlines
Deal found 9/13$1,179
This Alaska Airlines deal was found by Cheapflights users on 9/14. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/137:43 amIAD - SYD
2 stops44h 02mAlaska Airlines
Fri 11/219:40 pmSYD - IAD
2 stops48h 38mAlaska Airlines
Deal found 9/14$1,185

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 September 15, 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

Wed 11/26

6:34 pm-7:45 pm

2 stops57h 11m

Sydney Kingsford Smith

Tue 12/23

9:40 pm-6:13 am

2 stops24h 33m

$1,170

Washington, D.C.Brisbane

IAD - BNE

IADBNE

Washington, D.C. Dulles Intl

Wed 11/5

8:40 am-6:30 am

2 stops30h 50m

Brisbane

Sun 11/16

9:40 am-12:11 am

2 stops29h 31m

$1,171

Washington, D.C.Sydney

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Mon 1/19

5:30 pm-7:45 pm

2 stops34h 15m

Sydney Kingsford Smith

Fri 2/6

9:40 pm-4:15 pm

2 stops34h 35m

$1,192

Washington, D.C.Sydney

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Tue 2/24

5:30 pm-7:45 pm

2 stops34h 15m

Sydney Kingsford Smith

Fri 3/6

9:40 pm-9:55 pm

2 stops40h 15m

$1,201

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Fri 2/27

6:55 pm-7:45 pm

2 stops32h 50m

Sydney Kingsford Smith

Sun 3/8

9:40 pm-5:55 am

2 stops47h 15m

$1,206

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Wed 2/25

6:55 pm-7:45 pm

2 stops32h 50m

Sydney Kingsford Smith

Sun 3/8

9:40 pm-5:55 am

2 stops47h 15m

$1,206

Washington, D.C.Brisbane

IAD - BNE

IADBNE

Washington, D.C. Dulles Intl

Sun 11/2

10:08 pm-9:55 am

2 stops44h 47m

Brisbane

Mon 11/17

8:20 am-8:39 pm

2 stops27h 19m

$1,297

Washington, D.C.Brisbane

IAD - BNE

IADBNE

Washington, D.C. Dulles Intl

Tue 11/4

9:10 am-7:00 am

2 stops30h 50m

Brisbane

Mon 11/17

8:20 am-8:39 pm

2 stops27h 19m

$1,298

Washington, D.C.Brisbane

IAD - BNE

IADBNE

Washington, D.C. Dulles Intl

Tue 11/4

9:10 am-9:55 am

2 stops33h 45m

Brisbane

Tue 11/18

11:10 am-9:26 pm

2 stops25h 16m

$1,298

Washington, D.C.Brisbane

IAD - BNE

IADBNE

Washington, D.C. Dulles Intl

Sat 11/8

10:10 pm-9:55 am

2 stops44h 45m

Brisbane

Sat 11/22

6:05 pm-11:44 pm

2 stops44h 39m

$1,314

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

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, March is the cheapest month in which you can book a flight from Washington, D.C. to Australia (average of $1,032). Flying from Washington, D.C. to Australia in December is currently the most expensive (average of $1,627). 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 September 15, 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 September 15, 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
7,956 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

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
7,956 reviews
Delta
8.0
Very good
7,956 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

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
905 reviews
Delta
8.0
Very good
7,956 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

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
8,931 reviews
Delta
8.0
Very good
7,956 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

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
7,956 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

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
10,000 reviews
Delta
8.0
Very good
7,956 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

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.

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

    For as low as $1,297, Alaska Airlines can have you in Australia from Washington, D.C. in 44h 47m. There are 9439 mi between Washington, D.C. and Australia. 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. to Australia one-way?

    The cheapest airlines for a one-way flight from Washington, D.C. to Australia are Alaska Airlines ($673), American Airlines ($747), and Qantas Airways ($1,256).

  • 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, March is the cheapest month in which you can book a flight from Washington, D.C. to Australia (average of $1,032). Flying from Washington, D.C. to Australia in December is currently the most expensive (average of $1,627). 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.
Dulles Intl to Sydney flights
Dulles Intl to Melbourne flights
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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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$276Average$1,086FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$346Average$1,703FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$672Average$1,124FlexibilityNo cancel feeOn-time71%
Qantas AirwaysCheapest$678Average$1,304FlexibilityNo cancel feeOn-time74%
Air CanadaCheapest$984Average$1,431FlexibilityNo cancel feeOn-time67%
Air New ZealandCheapest$1,261Average$1,765FlexibilityNo cancel feeOn-time78%
ANACheapest$1,370Average$1,587FlexibilityNo cancel feeOn-time80%
Qatar AirwaysCheapest$1,506Average$2,089FlexibilityNo cancel feeOn-time68%

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