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

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 2/23. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SYD
Feb 19 — Feb 261
Thu 2/19
Thu 2/26
1 adult, Economy
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Cheap flight deals from Dulles Intl to Sydney

Cheapest flights from Dulles Intl to Sydney
Explore the most affordable flight options available from Dulles Intl to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 20, 2026.

This Air Canada deal was found by Cheapflights users on 1/20. 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 4/29:55 am
IAD
-
SYD
2 stops31h 25m
Air Canada
Tue 4/149:20 am
SYD
-
IAD
2 stops25h 09m
Air Canada
Deal found 1/20$1,129
This Expedia deal was found by Cheapflights users on 1/19. 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.
Tue 8/189:45 am
IAD
-
SYD
2 stops31h 35m
Air Canada
Tue 9/229:20 am
SYD
-
IAD
2 stops25h 02m
Air Canada
Deal found 1/19$1,130
This Expedia deal was found by Cheapflights users on 1/19. 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 3/169:55 am
IAD
-
SYD
2 stops31h 40m
Air Canada
Fri 5/159:20 am
SYD
-
IAD
2 stops36h 30m
Air Canada
Deal found 1/19$1,132
This Air Canada deal was found by Cheapflights users on 1/20. 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 4/209:55 am
IAD
-
SYD
2 stops31h 25m
Air Canada
Fri 5/19:20 am
SYD
-
IAD
2 stops25h 17m
Air Canada
Deal found 1/20$1,135
This Air Canada deal was found by Cheapflights users on 1/19. 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 3/319:55 am
IAD
-
SYD
2 stops31h 25m
Air Canada
Sun 4/199:20 am
SYD
-
IAD
2 stops26h 05m
Air Canada
Deal found 1/19$1,140
This Air Canada deal was found by Cheapflights users on 1/19. 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 4/119:55 am
IAD
-
SYD
3 stops31h 25m
Air Canada
Sun 4/199:20 am
SYD
-
IAD
2 stops26h 05m
Air Canada
Deal found 1/19$1,148
This Orbitz deal was found by Cheapflights users on 1/20. 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.
Tue 8/259:45 am
IAD
-
SYD
2 stops31h 35m
Air Canada
Mon 8/3110:30 am
SYD
-
IAD
2 stops57h 55m
Air Canada
Deal found 1/20$1,152
This Gurufare deal was found by Cheapflights users on 1/19. 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.
Tue 6/164:10 pm
IAD
-
SYD
1 stop25h 10m
ANA
Tue 7/219:20 am
SYD
-
IAD
2 stops36h 35m
ANA
Deal found 1/19$1,155

Find flight deals from Dulles Intl to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Sydney (SYD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$1,129
(Air Canada)

One-way from

$510
(Kiwi.com)

Popular in

December

Cheapest in

May

Average price

$1,561
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Sydney Kingsford Smith flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Sydney Kingsford Smith flights.
Search Deals
From Washington, D.C. Dulles Intl to Sydney Kingsford Smith
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Sydney Kingsford Smith
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($384 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($83 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Sydney 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 January 20, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Sydney that are best for you.

Fly from

Dulles Intl

Fly to

Sydney

Route

Depart

Return

Price

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 2/17

5:37 pm-6:45 pm

2 stops33h 08m

Sydney Kingsford Smith

Tue 5/26

12:00 pm-6:31 pm

1 stop20h 31m

$1,298

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sat 2/7

5:26 pm-1:00 pm

2 stops27h 34m

Sydney Kingsford Smith

Fri 5/22

12:00 pm-6:31 pm

1 stop20h 31m

$1,398

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 2/24

6:20 pm-7:45 pm

3 stops33h 25m

Sydney Kingsford Smith

Tue 3/17

9:40 pm-6:11 pm

3 stops35h 31m

$1,427

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Fri 2/20

6:27 pm-7:45 pm

2 stops33h 18m

Sydney Kingsford Smith

Tue 3/10

9:40 pm-5:27 pm

3 stops34h 47m

$1,470

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sat 2/28

7:05 am-7:45 pm

2 stops68h 40m

Sydney Kingsford Smith

Sun 3/8

9:40 pm-5:40 am

2 stops47h 00m

$1,484

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Mon 2/16

1:30 pm-7:20 pm

2 stops37h 50m

Sydney Kingsford Smith

Sat 2/28

9:15 pm-7:20 pm

2 stops38h 05m

$1,536

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 3/10

5:50 pm-7:00 am

1 stop22h 10m

Sydney Kingsford Smith

Tue 3/31

11:20 am-10:18 pm

1 stop25h 58m

$1,565

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sun 3/15

7:32 pm-9:05 am

1 stop22h 33m

Sydney Kingsford Smith

Mon 3/23

10:25 am-4:29 pm

1 stop21h 04m

$1,565

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 6/16

12:35 pm-7:00 am

1 stop28h 25m

Sydney Kingsford Smith

Tue 6/30

9:30 am-4:13 pm

1 stop20h 43m

$1,565

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 2/24

2:36 pm-9:15 am

1 stop26h 39m

Sydney Kingsford Smith

Tue 3/17

2:00 pm-7:27 pm

1 stop20h 27m

$1,565

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/18

Showing 1-10 of 23 results
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Compare providers for flights from Dulles Intl to Sydney

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to Sydney in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
AranGrantPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Sydney flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Sydney flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Sydney flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Sydney flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-Sydney flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Dulles Intl to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney 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 Sydney

How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Sydney?

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to Sydney. Price data was last updated on January 16, 2026.

To ensure you get the cheapest price possible for a flight from Washington, D.C. Dulles Intl Airport to Sydney, you should look to book at least 10 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Sydney (average of $357). Flying from Washington, D.C. Dulles Intl Airport to Sydney in January is currently the most expensive (average of $989). 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.

How much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport to Sydney?

Reviews of airlines servicing Sydney

Get insights into the airlines that provide service to Sydney. 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 Sydney. Reviews last updated January 20, 2026.
Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Sydney, such as Delta, Qantas Airways, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,080 reviews

Comfort

7.9

Entertainment

7.8

Overall

7.9

Food

7.2

Crew

8.5

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,080 reviews
Delta
7.9
Good
8,080 reviews

Comfort

7.9

Entertainment

7.8

Overall

7.9

Food

7.2

Crew

8.5

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Qantas Airways
7.5
Good
973 reviews
Delta
7.9
Good
8,080 reviews

Comfort

7.9

Entertainment

7.8

Overall

7.9

Food

7.2

Crew

8.5

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,183 reviews
Delta
7.9
Good
8,080 reviews

Comfort

7.9

Entertainment

7.8

Overall

7.9

Food

7.2

Crew

8.5

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,164 reviews
Delta
7.9
Good
8,080 reviews

Comfort

7.9

Entertainment

7.8

Overall

7.9

Food

7.2

Crew

8.5

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Air Canada
7.1
Good
10,637 reviews
Delta
7.9
Good
8,080 reviews

Comfort

7.9

Entertainment

7.8

Overall

7.9

Food

7.2

Crew

8.5

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Sydney from Washington, D.C. Dulles Intl?

    Sydney Kingsford Smith (SYD) is the airport you will fly into if you book a flight from Washington, D.C. Dulles Intl to Sydney. You should not have trouble finding flights to Kingsford Smith from Washington, D.C. Dulles Intl; the airport handles an average of 0 inbound flights from Washington, D.C. Dulles Intl per day. You should also have plenty of airline options to choose from since 6 airlines have flights to the Sydney airport from Washington, D.C. Dulles Intl. It is only a 4.6 mi journey from Kingsford Smith (SYD) to Sydney’s city center.

  • How long is the flight from Washington, D.C. Dulles Intl Airport to Sydney?

    A quick flight from Washington, D.C. Dulles Intl Airport to Sydney can take about 33h 08m. Qantas Airways provides one of the quickest options available for as low as $1,298. Washington, D.C. Dulles Intl Airport and Sydney are separated by a distance of 9737 mi.

  • What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Sydney round-trip?

    Our cheapest airline available from Washington, D.C. Dulles Intl Airport to Sydney is United Airlines. Our recent data shows that you can find tickets from as low as $377 on this airline. Additional options worth looking into are Delta and Qantas Airways, starting at $609 and $816 round-trip. Users have found that United Airlines is 72% cheaper than the other options available to this destination.

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

    The cheapest airline one-way is American Airlines, with whom users have recently found tickets for as low as $395. However, be on the lookout for offers from Qantas Airways and Delta, as they are both options that can get you from Washington, D.C. Dulles Intl Airport to Sydney for a low price.

  • Where are the most common layover locations when flying from Washington, D.C. Dulles Intl Airport to Sydney?

    Washington, D.C. Dulles Intl Airport to Sydney flights have a layover in Dallas most often.

  • What are some popular things to do or see while on a layover in Dallas?

    American Airlines Center, Dallas World Aquarium, and Reunion Tower are currently the most popular points of interest in Dallas at the moment. American Airlines Center, Dallas World Aquarium, and Reunion Tower are located about 15.0 mi, 15.5 mi, and 15.6 mi, respectively from Dallas/Fort Worth. Travelers in need of a car in Dallas can rent one for about $52 per day.

  • Where are the least popular layover locations for Washington, D.C. Dulles Intl Airport to Sydney flights?

    The least popular layover on flights from Washington, D.C. Dulles Intl Airport to Sydney is Los Angeles.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl to Sydney 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 Sydney?

    Currently, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Sydney (average of $357). Flying from Washington, D.C. Dulles Intl Airport to Sydney in January is currently the most expensive (average of $989). 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

Traveling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Manly

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Top 6 airlines flying from Dulles Intl to Sydney

Discover the top 6 airlines that operate flights from Dulles Intl to Sydney. 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 January 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$377Average$1,608FlexibilityNo cancel feeOn-time69%
DeltaCheapest$609Average$937FlexibilityNo cancel feeOn-timeN/A
Qantas AirwaysCheapest$816Average$1,257FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$825Average$851FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$854Average$1,249FlexibilityNo cancel feeOn-time67%
Air New ZealandCheapest$1,289Average$1,874FlexibilityNo cancel feeOn-time78%

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