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Cheap flights from Washington, D.C. Dulles Intl Airport to Sydney from $759

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 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SYD
24 feb. — 3 mar.1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Dulles Intl to Sydney

Enter your travel dates to find the best prices.

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 25 enero 2026.

dom. 10/509:45
IAD
-
SYD
2 stops31h 35m
Air Canada
mar. 19/509:20
SYD
-
IAD
2 stops25h 09m
Air Canada
Deal found 22/1$1,638
mar. 5/509:45
IAD
-
SYD
2 stops31h 35m
Air Canada
mar. 12/509:20
SYD
-
IAD
2 stops25h 09m
Air Canada
Deal found 24/1$1,639
mié. 15/412:40
IAD
-
SYD
2 stops28h 40m
Air Canada
mié. 6/509:20
SYD
-
IAD
2 stops26h 05m
Air Canada
Deal found 23/1$1,642
vie. 15/509:45
IAD
-
SYD
2 stops31h 35m
Air Canada
vie. 29/509:20
SYD
-
IAD
1 stop35h 02m
Air Canada
Deal found 24/1$1,643
jue. 31/1209:45
IAD
-
SYD
2 stops29h 10m
Air Canada
lun. 18/111:20
SYD
-
IAD
2 stops25h 34m
Air Canada
Deal found 23/1$1,646
lun. 6/409:55
IAD
-
SYD
3 stops31h 25m
Air Canada
jue. 16/409:20
SYD
-
IAD
2 stops25h 09m
Air Canada
Deal found 23/1$1,649

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 25 enero 2026.

Round-trip from

$1,638

One-way from

$759

Popular in

December

Cheapest in

May

Average price

$2,262
Air Canada
  • Air Canada
  • 20/4-20/5
  • 4 total stops
  • 56h 34m total
  • Washington, D.C. to Sydney
Search Deals
10/3
  • 10/3
  • 3 total stops
  • 38h 35m total
  • Washington, D.C. to Sydney
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($797 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($173 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customise 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 647,157 searches. Data last updated 25 enero 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

mar. 24/2

17:37-22:25

2 stops36h 48m

Sydney Kingsford Smith

mar. 24/3

13:05-22:53

1 stop24h 48m

$1,884

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

mar. 17/2

17:37-20:25

2 stops34h 48m

Sydney Kingsford Smith

mar. 26/5

12:00-18:31

1 stop20h 31m

$1,884

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

lun. 20/4

09:55-07:20

2 stops31h 25m

Sydney Kingsford Smith

jue. 30/4

09:20-21:25

1 stop26h 05m

$1,903

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

mar. 24/2

18:20-19:45

3 stops33h 25m

Sydney Kingsford Smith

mar. 24/3

21:40-17:22

3 stops34h 42m

$1,972

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

lun. 23/2

09:45-09:35

2 stops31h 50m

Sydney Kingsford Smith

lun. 2/3

11:20-20:26

2 stops25h 06m

$2,012

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

jue. 2/4

09:55-08:20

2 stops31h 25m

Sydney Kingsford Smith

mar. 14/4

09:20-20:29

1 stop25h 09m

$2,090

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

sáb. 21/2

13:30-19:20

2 stops37h 50m

Sydney Kingsford Smith

mié. 25/2

21:15-19:20

2 stops38h 05m

$2,119

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

dom. 8/2

17:26-10:55

2 stops25h 29m

Sydney Kingsford Smith

mar. 24/2

06:30-16:31

2 stops26h 01m

$2,216

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

dom. 8/2

17:26-14:25

2 stops28h 59m

Sydney Kingsford Smith

dom. 22/2

21:55-22:53

2 stops40h 58m

$2,220

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

mar. 10/2

17:26-14:25

2 stops28h 59m

Sydney Kingsford Smith

mié. 18/2

14:05-22:53

1 stop24h 48m

$2,264

Flights are sorted by cheapest return flights first.

Deals found on 22/1

Showing 1-10 of 20 results
1
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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 return 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 return flight from Dulles Intl to Sydney. Price data was last updated on 23 January 2026.

The best time to book flights from Washington, D.C. Dulles Intl Airport to Sydney is 10 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 $517). Flying from Washington, D.C. Dulles Intl Airport to Sydney in January is currently the most expensive (average of $1,433). 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 for a return flight 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 25 enero 2026.
See what other customers who have flown with United Airlines from Washington, D.C. Dulles Intl Airport to Sydney have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,198 reviews
Check prices

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Food

6.6

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,198 reviews
United Airlines
7.4
Good
9,198 reviews
Check prices

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Food

6.6

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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?

    If you book a flight to Sydney from Washington, D.C. Dulles Intl, you will be flying to Kingsford Smith, which is the city’s only airport. Sydney Kingsford Smith (SYD) is located 7.5 km from the centre of Sydney. There are 0 flights from Washington, D.C. Dulles Intl to Kingsford Smith per day from 1 airline.

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

    For as low as $1,910, Qantas Airways can have you in Sydney from Washington, D.C. Dulles Intl Airport in 32h 20m. Airlines will cover a distance of 15670 km. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Washington, D.C. Dulles Intl Airport to Sydney round-trip?

    Currently priced at $2,237, United Airlines will fly you from Washington, D.C. Dulles Intl Airport to Sydney and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip.

  • 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 holiday 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 $517). Flying from Washington, D.C. Dulles Intl Airport to Sydney in January is currently the most expensive (average of $1,433). 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

Travelling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Penrith
Manly
Katoomba
Terrigal
Lithgow
Leura
Coogee
Cronulla
Randwick
Bondi Beach

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Dulles Intl to Sydney

See prices for flight routes from nearby airports that may be better suited for you.
Reagan-National to Sydney flights
Baltimore to Sydney flights
Dulles Intl to Coolangatta flights

Top airline flying from Dulles Intl to Sydney

Discover the top airline 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 647,157 searches. Data last updated 25 enero 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$2,237Average$2,767FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Dulles Intl to Sydney?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Dulles Intl to Sydney. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Dulles Intl to Sydney?

Cheapflights simply makes it quick and affordable to book flights from Dulles Intl to Sydney by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Dulles Intl to Sydney with no change fees?

Certainly. Search results for flights to Sydney from Dulles Intl shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Dulles Intl to Sydney become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Sydney from Dulles Intl today and book when prices fit your budget.

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