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Cheap flights from Washington, D.C. Dulles Intl Airport to Sydney from $762

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 6/8. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SYD
16 Jul — 23 Jul1
1 adult

Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Sydney Kingsford Smith are usually found in April or February, booked 65 days in advance, depart on a Tuesday or Saturday and return on a Friday

Cheap 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 11 July 2025.

Round-trip from

$1,973

One-way from

$762

Popular in

December

Cheapest in

April

Average price

$2,154
Air New Zealand
  • Air New Zealand
  • 9/9-23/9
  • 4 total stops
  • 59h 41m total
  • Washington, D.C. to Sydney
6/8
  • 6/8
  • 2 total stops
  • 52h 21m total
  • Washington, D.C. to Sydney
Highest demand for flights based on searches. 17% potential increase in price ($644 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease ($94 potential savings vs. average return price).
Average for round-trip flights in July 2025

Find 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 11 July 2025.

Tue 9/917:55IAD - SYD
2 stops26h 40mAir New Zealand
Tue 23/911:50SYD - IAD
2 stops33h 01mAir New Zealand
Deal found 9/7$1,973
Tue 21/1011:41IAD - SYD
2 stops34h 04mMultiple Airlines
Thu 13/1106:00SYD - IAD
2 stops32h 18mMultiple Airlines
Deal found 10/7$2,032
Tue 9/908:25IAD - SYD
1 stop32h 55mAir Canada
Tue 23/909:20SYD - IAD
2 stops25h 45mAir Canada
Deal found 9/7$2,092
Fri 15/820:19IAD - SYD
2 stops33h 26mAlaska Airlines
Fri 29/821:40SYD - IAD
2 stops33h 07mAlaska Airlines
Deal found 10/7$2,109
Thu 20/1113:30IAD - SYD
2 stops38h 20mTurkish Airlines
Fri 28/1121:45SYD - IAD
2 stops37h 30mTurkish Airlines
Deal found 11/7$2,121

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 11 July 2025.
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 9/9

17:55-10:35

2 stops26h 40m

Sydney Kingsford Smith

Tue 23/9

11:50-06:51

2 stops33h 01m

$1,973

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 21/10

11:41-12:45

2 stops34h 04m

Sydney Kingsford Smith

Thu 13/11

06:00-22:18

2 stops32h 18m

$2,032

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 9/9

08:25-07:20

1 stop32h 55m

Sydney Kingsford Smith

Tue 23/9

09:20-21:05

2 stops25h 45m

$2,092

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Fri 15/8

20:19-19:45

2 stops33h 26m

Sydney Kingsford Smith

Fri 29/8

21:40-16:47

2 stops33h 07m

$2,109

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Thu 20/11

13:30-19:50

2 stops38h 20m

Sydney Kingsford Smith

Wed 3/12

21:45-19:15

2 stops37h 30m

$2,121

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Wed 6/8

20:19-14:40

2 stops52h 21m

$762

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sun 17/8

20:19-19:45

2 stops33h 26m

$1,155

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Wed 20/8

12:45-08:45

2 stops30h 00m

$1,252

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Wed 24/9

17:40-06:55

1 stop23h 15m

$1,309

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 26/8

11:00-06:15

1 stop29h 15m

$1,324

Flights are sorted by cheapest return flights first.

Deals found on 9/7

Showing 1-10 of 16 results
1
2

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 27 June 2025.

The best time to book flights from Washington, D.C. Dulles Intl Airport to Sydney is 65 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, May is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Sydney (average of $129). Flying from Washington, D.C. Dulles Intl Airport to Sydney in October is currently the most expensive (average of $171). 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 IAD to SYD?

Find hourly flight availability from Dulles Intl to Sydney. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 11 July 2025.

When flying from Washington, D.C. Dulles Intl Airport to Sydney, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 33% versus a flight in the afternoon.

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 11 July 2025.
See what other customers who have flown with ANA, Alaska Airlines, andAir New Zealand 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.

Entertainment

7.9

Comfort

8.2

Crew

8.7

Boarding

8.6

Overall

8.4

Food

7.7

Reviews

1 / 20
10.0
Excellent

Kenneth,July 2025

SFO - HND

Great food, great service, great comfort. Can’t ask for more although I’m only flying economy!
8.4
Very Good

Entertainment

7.9

Comfort

8.2

Crew

8.7

Boarding

8.6

Overall

8.4

Food

7.7

Reviews

1 / 20
10.0
Excellent

Kenneth,July 2025

SFO - HND

Great food, great service, great comfort. Can’t ask for more although I’m only flying economy!

Entertainment

7.9

Comfort

8.2

Crew

8.7

Boarding

8.6

Overall

8.4

Food

7.7

Reviews

1 / 20
10.0
Excellent

Kenneth,July 2025

SFO - HND

Great food, great service, great comfort. Can’t ask for more although I’m only flying economy!

Entertainment

7.9

Comfort

8.2

Crew

8.7

Boarding

8.6

Overall

8.4

Food

7.7

Reviews

1 / 20
10.0
Excellent

Kenneth,July 2025

SFO - HND

Great food, great service, great comfort. Can’t ask for more although I’m only flying economy!

Entertainment

7.9

Comfort

8.2

Crew

8.7

Boarding

8.6

Overall

8.4

Food

7.7

Reviews

1 / 20
10.0
Excellent

Kenneth,July 2025

SFO - HND

Great food, great service, great comfort. Can’t ask for more although I’m only flying economy!

Entertainment

7.9

Comfort

8.2

Crew

8.7

Boarding

8.6

Overall

8.4

Food

7.7

Reviews

1 / 20
10.0
Excellent

Kenneth,July 2025

SFO - HND

Great food, great service, great comfort. Can’t ask for more although I’m only flying economy!

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.

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

    Currently priced at $1,973, Air New Zealand will fly you from Washington, D.C. Dulles Intl Airport to Sydney and back. In addition to Air New Zealand, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Air Canada and Alaska Airlines - these airlines can fly you to your destination from $2,092 and $2,109, respectively.

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

    The cheapet airlines for a one-way flight from Washington, D.C. Dulles Intl Airport to Sydney are Alaska Airlines ($1,155), Air New Zealand ($1,252), and Qantas Airways ($1,309).

  • 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, May is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Sydney (average of $129). Flying from Washington, D.C. Dulles Intl Airport to Sydney in October is currently the most expensive (average of $171). 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 Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Parramatta
Wollongong
Katoomba
Manly
Penrith
Coogee
Cronulla
Terrigal
Lithgow
Randwick
Bondi Beach
Leura

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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.

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 11 July 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$2,186Average$2,509FlexibilityNo 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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