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Dulles Intl

$482+ Cheap flights from Sydney (SYD) to Dulles Intl (IAD)

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 8/23. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — IAD
Aug 27 — Sep 31
Thu 8/27
Thu 9/3
1 adult, Economy
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Cheap flight deals from Sydney to Dulles Intl

Cheapest flights from Sydney to Dulles Intl
Explore the most affordable flight options available from Sydney to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2026.

This Trip.com deal was found by Cheapflights users on 7/26. 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 9/91:15 pm
SYD
-
IAD
3 stops35h 12m
Multiple Airlines
Wed 9/1611:12 am
IAD
-
SYD
3 stops45h 13m
Multiple Airlines
Deal found 7/26$945
This Trip.com deal was found by Cheapflights users on 7/24. 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 7/291:15 pm
SYD
-
IAD
3 stops37h 32m
Multiple Airlines
Wed 8/1211:11 am
IAD
-
SYD
3 stops34h 39m
Multiple Airlines
Deal found 7/24$1,156
This United Airlines deal was found by Cheapflights users on 7/24. 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 7/279:30 am
SYD
-
IAD
2 stops35h 48m
United Airlines
Wed 7/297:00 am
IAD
-
SYD
1 stop34h 00m
United Airlines
Deal found 7/24$1,170
This Trip.com deal was found by Cheapflights users on 7/25. 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 8/301:15 pm
SYD
-
IAD
3 stops40h 52m
Multiple Airlines
Wed 9/911:12 am
IAD
-
SYD
3 stops34h 38m
Multiple Airlines
Deal found 7/25$1,188
This Trip.com deal was found by Cheapflights users on 7/26. 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.
Mon 8/241:15 pm
SYD
-
IAD
3 stops41h 59m
Multiple Airlines
Mon 8/3110:45 am
IAD
-
SYD
3 stops35h 05m
Multiple Airlines
Deal found 7/26$1,190
This Ovago deal was found by Cheapflights users on 7/27. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/247:40 pm
SYD
-
IAD
2 stops49h 41m
Air China
Sun 9/277:00 am
IAD
-
SYD
2 stops41h 50m
Air China
Deal found 7/27$1,198
This Trip.com deal was found by Cheapflights users on 7/23. 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 9/61:15 pm
SYD
-
IAD
3 stops30h 25m
Multiple Airlines
Sun 9/137:00 am
IAD
-
SYD
3 stops49h 25m
Multiple Airlines
Deal found 7/23$1,235
This Gotogate deal was found by Cheapflights users on 7/27. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/249:20 am
SYD
-
IAD
3 stops29h 38m
Air Canada
Sun 9/2710:10 pm
IAD
-
SYD
2 stops43h 10m
Air Canada
Deal found 7/27$1,236
This Aunt Betty deal was found by Cheapflights users on 7/25. 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 Aunt Betty is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/137:40 pm
SYD
-
IAD
1 stop37h 50m
Air China
Fri 8/2111:00 pm
IAD
-
SYD
1 stop49h 50m
Air China
Deal found 7/25$1,253
This BusinessClass deal was found by Cheapflights users on 7/26. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/297:40 pm
SYD
-
IAD
2 stops49h 13m
Air China
Sun 9/137:00 am
IAD
-
SYD
2 stops41h 50m
Air China
Deal found 7/26$1,270
This BYOjet deal was found by Cheapflights users on 7/23. 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 BYOjet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1011:55 am
SYD
-
IAD
2 stops24h 50m
Air New Zealand
Fri 9/113:15 pm
IAD
-
SYD
2 stops29h 25m
Air New Zealand
Deal found 7/23$1,284

Find flight deals from Sydney to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Sydney (SYD) to Dulles Intl (IAD). 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 July 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$945
(Trip.com)

One-way from

$482
(Trip.com)

Popular in

July

Cheapest in

November

Average price

$1,909
Provider with most accurate pricing for Sydney Kingsford Smith-Washington, D.C. Dulles Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Sydney Kingsford Smith-Washington, D.C. Dulles Intl flights.
Search Deals
From Sydney Kingsford Smith to Washington, D.C. Dulles Intl
Search Deals
One-way flight from Sydney Kingsford Smith to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($273 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($58 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sydney to Dulles Intl 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 July 28, 2026.
Use the filters below to find and compare flights from Sydney to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Wed 9/9

11:55 am-5:40 am

2 stops31h 45m

Washington, D.C. Dulles Intl

Sun 9/20

6:42 am-8:45 am

2 stops36h 03m

$1,307
Quickest round-trip

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Wed 9/9

11:55 am-5:55 am

2 stops32h 00m

Washington, D.C. Dulles Intl

Tue 9/22

6:00 pm-10:40 am

2 stops26h 40m

$1,370

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Wed 10/14

10:05 pm-11:30 am

2 stops52h 25m

Washington, D.C. Dulles Intl

Sat 10/24

10:20 pm-7:35 pm

2 stops54h 15m

$1,473

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Wed 9/9

1:05 pm-11:30 am

2 stops36h 25m

Washington, D.C. Dulles Intl

Tue 9/22

1:15 pm-6:05 am

3 stops50h 50m

$1,590

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Sat 8/29

8:45 pm-6:14 pm

3 stops35h 29m

Washington, D.C. Dulles Intl

Sun 9/13

5:57 pm-6:50 pm

2 stops34h 53m

$1,621

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Wed 8/12

9:30 am-7:14 am

2 stops35h 44m

Washington, D.C. Dulles Intl

Thu 8/20

8:35 am-6:55 am

1 stop32h 20m

$1,642

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Sun 8/30

8:45 pm-6:14 pm

2 stops35h 29m

Washington, D.C. Dulles Intl

Wed 9/9

5:57 pm-6:50 pm

3 stops34h 53m

$1,753

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Sun 8/30

9:55 am-5:55 am

2 stops34h 00m

Washington, D.C. Dulles Intl

Wed 9/9

6:00 pm-8:45 am

2 stops24h 45m

$1,753

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Mon 9/21

9:10 am-8:24 pm

2 stops25h 14m

Washington, D.C. Dulles Intl

Mon 10/5

6:00 am-8:05 am

1 stop35h 05m

$1,808

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Mon 12/7

9:20 am-4:06 pm

1 stop22h 46m

Washington, D.C. Dulles Intl

Sun 12/27

10:42 pm-7:00 am

1 stop40h 18m

$1,847

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/22

Showing 1-10 of 21 resultsSorted by cheapest first
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  • Most accurate provider: When it comes to deals on Sydney-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Sydney-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Sydney-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Sydney-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub 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 Sydney-Washington, D.C. Dulles Intl Airport 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 Sydney to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Sydney 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 Sydney to Washington, D.C. Dulles Intl Airport

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

Currently, November is the cheapest month in which you can book a flight from Sydney to Washington, D.C. Dulles Intl Airport (average of $1,018). Flying from Sydney to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $1,909). 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 Sydney to Washington, D.C. Dulles Intl Airport?

Airfare is below average for this route at the moment.

Sydney to Washington, D.C. Dulles Intl Airport flights typically cost between $1,117 and $1,451 in September.
The cheapest round-trip price found within the last 5 days was $945 on Multiple Airlines (Sep 9-Sep 16).

Related info for your journey

Find useful and relevant information for your journey from Sydney to Dulles Intl. 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 from for flights from Sydney to Washington, D.C. Dulles Intl?

    Located just 4.6 mi from the city center, Sydney Kingsford Smith is the airport most travelers will use when flying to Washington, D.C. Dulles Intl from Sydney. Booking flights from Kingsford Smith (SYD) to Washington, D.C. Dulles Intl should be relatively easy as there are 0 daily outbound flights to Washington, D.C. Dulles Intl from 0 different airlines.

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

    A quick flight from Sydney to Washington, D.C. Dulles Intl Airport can take about 31h 45m. Air New Zealand provides one of the quickest options available for as low as $1,307. Airlines will cover a distance of 9737 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Sydney to Dulles Intl 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 Sydney to Washington, D.C. Dulles Intl Airport?

    Currently, November is the cheapest month in which you can book a flight from Sydney to Washington, D.C. Dulles Intl Airport (average of $1,018). Flying from Sydney to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $1,909). 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 Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Owings Mills
Arlington
Tysons
Springfield
Lanham
Reston
Herndon
Rockville
Chantilly
Hyattsville
Fredericksburg
Falls Church
Hanover
Manassas
Laurel
Sterling
Clinton
Hunt Valley
Cordova

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