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Cheap flights from Washington, D.C. Dulles Intl Airport to Sydney from $820

IAD — SYD
23 Oct — 30 Oct1
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

Sat 24/1022:18 -
2 stops43h 17m
Tue 10/1109:55 -
2 stops35h 24m
Deal found 23/9$1,802
Sat 7/1117:54 -
2 stops59h 56m
Wed 18/1114:05 -
2 stops31h 14m
Deal found 22/9$1,829
Sun 1/1114:38 -
2 stops27h 57m
Sun 15/1114:05 -
2 stops31h 21m
Deal found 21/9$1,856
Tue 3/1108:34 -
2 stops32h 01m
Tue 10/1119:25 -
2 stops42h 32m
Deal found 18/9$1,864
Sun 8/1106:15 -
2 stops34h 20m
Mon 16/1114:05 -
2 stops33h 07m
Deal found 23/9$1,868
Sat 7/1117:56 -
2 stops46h 39m
Sun 15/1114:05 -
2 stops31h 21m
Deal found 23/9$1,875
Sat 24/1022:18 -
2 stops43h 17m
Sat 31/1007:30 -
2 stops36h 49m
Deal found 18/9$1,878
Wed 11/1109:00 -
2 stops31h 35m
Wed 18/1107:30 -
2 stops37h 49m
Deal found 23/9$1,882
Mon 19/1006:00 -
2 stops34h 30m
Mon 26/1011:15 -
2 stops34h 05m
Deal found 19/9$1,889
Sun 8/1106:15 -
2 stops34h 20m
Sun 15/1107:30 -
2 stops33h 29m
Deal found 23/9$1,895

Find flight deals from Dulles Intl to Sydney

Round-trip from

$1,770

One-way from

$820

Popular in

December

Cheapest in

August

Average price

$2,068
Air New Zealand
  • Air New Zealand
  • 28/2-10/3
  • 4 total stops
  • 60h 45m total
  • Washington, D.C. to Sydney
Search Deals
7/11-31/12
  • 7/11-31/12
  • 2 total stops
  • 49h 54m total
  • Washington, D.C. to Sydney
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($170 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($102 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2026
Search Deals

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Sydney that are best for you.

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Price

Cheapest return flight

Washington, D.C.Sydney

IAD Washington, D.C. Dulles Intl - SYD Sydney Kingsford Smith

IADSYD

Washington, D.C. Dulles Intl

Tue 23/2

06:10-09:35

2 stops35h 25m

Sydney Kingsford Smith

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,115

Washington, D.C.Sydney

IAD Washington, D.C. Dulles Intl - SYD Sydney Kingsford Smith

IADSYD

Washington, D.C. Dulles Intl

Tue 10/11

17:10-20:50

2 stops35h 40m

Sydney Kingsford Smith

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,115

Washington, D.C.Sydney

IAD Washington, D.C. Dulles Intl - SYD Sydney Kingsford Smith

IADSYD

Washington, D.C. Dulles Intl

Wed 10/3

06:10-09:35

2 stops35h 25m

Sydney Kingsford Smith

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,115

Washington, D.C.Sydney

IAD Washington, D.C. Dulles Intl - SYD Sydney Kingsford Smith

IADSYD

Washington, D.C. Dulles Intl

Thu 15/10

06:00-09:00

2 stops36h 00m

Sydney Kingsford Smith

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,164

Washington, D.C.Sydney

IAD Washington, D.C. Dulles Intl - SYD Sydney Kingsford Smith

IADSYD

Washington, D.C. Dulles Intl

Sun 8/11

06:00-09:50

2 stops35h 50m

Sydney Kingsford Smith

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,164
Fastest return journey

Washington, D.C.Sydney

IAD Washington, D.C. Dulles Intl - SYD Sydney Kingsford Smith

IADSYD

Washington, D.C. Dulles Intl

Sat 20/2

17:50-20:50

2 stops35h 00m

Sydney Kingsford Smith

Wed 31/12

00:00-09:00

Nonstop0h 00m

$1,199

Washington, D.C.Sydney

IAD Washington, D.C. Dulles Intl - SYD Sydney Kingsford Smith

IADSYD

Washington, D.C. Dulles Intl

Tue 29/12

21:20-19:25

2 stops54h 05m

Sydney Kingsford Smith

Thu 14/1

21:35-19:25

2 stops37h 50m

$2,118

Washington, D.C.Sydney

IAD Washington, D.C. Dulles Intl - SYD Sydney Kingsford Smith

IADSYD

Washington, D.C. Dulles Intl

Fri 23/10

13:15-19:20

1 stop39h 05m

Sydney Kingsford Smith

Fri 6/11

21:35-11:45

2 stops54h 10m

$2,158

Washington, D.C.Sydney

IAD Washington, D.C. Dulles Intl - SYD Sydney Kingsford Smith

IADSYD

Washington, D.C. Dulles Intl

Sun 22/11

17:16-19:45

2 stops34h 29m

Sydney Kingsford Smith

Sat 5/12

21:40-17:39

3 stops35h 59m

$2,252

Washington, D.C.Sydney

IAD Washington, D.C. Dulles Intl - SYD Sydney Kingsford Smith

IADSYD

Washington, D.C. Dulles Intl

Sun 22/11

18:39-19:45

3 stops33h 06m

Sydney Kingsford Smith

Sun 6/12

21:40-16:15

3 stops34h 35m

$2,282

Flights are sorted by cheapest return flights first.

Deals found on 18/9

Showing 1-10 of 16 resultsSorted by cheapest first
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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

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?

The best time to book flights from Washington, D.C. Dulles Intl Airport to Sydney is 4 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, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Sydney (average of $1,681). Flying from Washington, D.C. Dulles Intl Airport to Sydney in December is currently the most expensive (average of $3,086). 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?

Airfare is below average for this route at the moment.

Washington, D.C. Dulles Intl Airport to Sydney flights typically cost between $1,986 and $2,733 in February.
The cheapest return price found within the last 5 days was $1,770 on Air New Zealand (28 Feb–10 Mar).

Related info for your journey

  • 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 0 different airlines.

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

    For as low as $2,118, Turkish Airlines can have you in Sydney from Washington, D.C. Dulles Intl Airport in 54h 05m. Airlines will cover a distance of 15670 km.

  • 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, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Sydney (average of $1,681). Flying from Washington, D.C. Dulles Intl Airport to Sydney in December is currently the most expensive (average of $3,086). 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
Lithgow
Cronulla
Terrigal
Katoomba
Randwick
Leura
Bondi Beach
Coogee

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Dulles Intl to Sydney

Reagan-National to Sydney flights
Baltimore to Sydney flights
Dulles Intl to Coolangatta flights

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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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