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Cheap flights from Washington, D.C. Dulles Intl Airport to Sydney from $795

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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SYD
31 Mar — 7 Apr1
1 adult

Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Sydney Kingsford Smith are usually found in February or April, booked 80 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 26 March 2025.

Round-trip from

$1,375

One-way from

$795

Popular in

December

Cheapest in

February

Average price

$1,565
Qantas Airways
  • Qantas Airways
  • 17/8-24/8
  • 2 total stops
  • 53h 56m total
  • Washington, D.C. to Sydney
5/6
  • 5/6
  • 2 total stops
  • 45h 01m total
  • Washington, D.C. to Sydney
Highest demand for flights based on searches. 19% potential increase in price ($797 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease ($109 potential savings vs. average return price).
Average for round-trip flights in March 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 26 March 2025.

Sun 17/811:30IAD - SYD
1 stop29h 25mQantas Airways
Sun 24/812:10SYD - IAD
1 stop24h 31mQantas Airways
Deal found 24/3$1,375
Tue 12/813:03IAD - SYD
2 stops28h 17mAir Canada
Tue 26/809:20SYD - IAD
2 stops25h 56mAir Canada
Deal found 25/3$1,644
Sat 9/817:35IAD - SYD
2 stops28h 10mMultiple Airlines
Sat 23/813:45SYD - IAD
2 stops22h 56mMultiple Airlines
Deal found 25/3$1,938
Mon 25/812:15IAD - SYD
1 stop31h 10mANA
Sun 31/820:55SYD - IAD
1 stop32h 40mANA
Deal found 25/3$2,063
Fri 28/315:00IAD - SYD
2 stops37h 05mTurkish Airlines
Sun 30/321:55SYD - IAD
2 stops52h 50mTurkish Airlines
Deal found 24/3$2,197
Fri 15/819:59IAD - SYD
2 stops33h 46mAlaska Airlines
Tue 26/821:40SYD - IAD
2 stops32h 19mAlaska Airlines
Deal found 25/3$2,246
Sun 3/811:49IAD - SYD
2 stops29h 41mAmerican Airlines
Mon 18/812:10SYD - IAD
1 stop24h 31mAmerican Airlines
Deal found 25/3$2,422
Thu 12/608:10IAD - SYD
2 stops38h 05mFiji Airways
Sat 21/613:45SYD - IAD
2 stops31h 05mFiji Airways
Deal found 25/3$2,424
Wed 11/617:53IAD - SYD
1 stop23h 02mUnited Airlines
Wed 2/709:30SYD - IAD
1 stop29h 30mUnited Airlines
Deal found 25/3$2,470
Sun 1/608:30IAD - SYD
2 stops36h 05mAir New Zealand
Sun 8/609:30SYD - IAD
1 stop29h 14mAir New Zealand
Deal found 25/3$2,473

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 26 March 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

Sun 17/8

11:30-06:55

1 stop29h 25m

Sydney Kingsford Smith

Sun 24/8

12:10-22:41

1 stop24h 31m

$1,375

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Mon 1/9

08:25-07:20

1 stop32h 55m

Sydney Kingsford Smith

Tue 9/9

09:20-06:45

1 stop35h 25m

$1,644

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sat 9/8

17:35-11:45

2 stops28h 10m

Sydney Kingsford Smith

Sat 23/8

13:45-22:41

2 stops22h 56m

$1,938

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Mon 25/8

12:15-09:25

1 stop31h 10m

Sydney Kingsford Smith

Sun 31/8

20:55-15:35

1 stop32h 40m

$2,065

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Mon 4/8

13:30-19:00

2 stops39h 30m

Sydney Kingsford Smith

Wed 13/8

20:55-11:45

2 stops52h 50m

$2,284

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Fri 8/8

19:59-19:45

2 stops33h 46m

Sydney Kingsford Smith

Sun 31/8

21:40-15:59

2 stops32h 19m

$2,371

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Thu 12/6

08:10-12:15

2 stops38h 05m

Sydney Kingsford Smith

Sat 21/6

13:45-06:50

2 stops31h 05m

$2,424

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Wed 11/6

17:53-06:55

1 stop23h 02m

Sydney Kingsford Smith

Wed 23/7

10:20-16:23

1 stop20h 03m

$2,470

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sun 1/6

08:30-10:35

2 stops36h 05m

Sydney Kingsford Smith

Sun 8/6

09:30-00:44

1 stop29h 14m

$2,473

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 10/6

12:48-06:35

2 stops27h 47m

Sydney Kingsford Smith

Sun 27/7

09:25-00:10

2 stops28h 45m

$2,492

Flights are sorted by cheapest return flights first.

Deals found on 24/3

Showing 1-10 of 26 results
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2
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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 21 March 2025.

The best time to book flights from Washington, D.C. Dulles Intl Airport to Sydney is 80 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 26 March 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.

Rainfall in Sydney by month

Plan your trip to Sydney by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Sydney ranges from 50.0 - 130.0 inches per month. March is typically the wettest month, when rainfall can reach 130.0 mm. September is typically the driest time to visit Sydney when rainfall is around 50.0 mm.

Temperature in Sydney by month

Plan your trip to Sydney by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Sydney, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 22.0 C. Travellers hoping to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 11.0 C).

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 26 March 2025.
Get a feel of what it's like to fly with Air Tahiti Nui, Korean Air and ANA from Washington, D.C. to Sydney by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

7.2

Comfort

8.0

Overall

8.7

Crew

9.1

Boarding

8.7

Food

7.8

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

Entertainment

7.2

Comfort

8.0

Overall

8.7

Crew

9.1

Boarding

8.7

Food

7.8

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

Entertainment

7.2

Comfort

8.0

Overall

8.7

Crew

9.1

Boarding

8.7

Food

7.8

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
8.3
Very Good

Entertainment

7.2

Comfort

8.0

Overall

8.7

Crew

9.1

Boarding

8.7

Food

7.8

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

Entertainment

7.2

Comfort

8.0

Overall

8.7

Crew

9.1

Boarding

8.7

Food

7.8

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

Entertainment

7.2

Comfort

8.0

Overall

8.7

Crew

9.1

Boarding

8.7

Food

7.8

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

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 2 different airlines.

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

    Currently priced at $1,375, Qantas Airways will fly you from Washington, D.C. Dulles Intl Airport to Sydney and back. In addition to Qantas Airways, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Air Canada and ANA - these airlines can fly you to your destination from $1,644 and $2,065, respectively. Users have found that Qantas Airways is 34% 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 cheapet airlines for a one-way flight from Washington, D.C. Dulles Intl Airport to Sydney are ANA ($1,209), Air Canada ($1,286), and Fiji Airways ($1,308).

  • 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
Randwick
Terrigal
Lithgow
Bondi Beach
Leura
Swansea

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.

Top 2 airlines flying from Dulles Intl to Sydney

Discover the top 2 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 647,157 searches. Data last updated 26 March 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$1,902Average$2,406FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest$2,157Average$2,475FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

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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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