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Cheap flights from Washington, D.C. Dulles Intl Airport to Sydney from $525

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Dulles Intl Airport to Sydney departing on 3/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to Sydney

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
9:45 am - 7:20 am
IAD
-
SYD
31h 35m
2 stops
Air Canada Logo
9:20 am - 8:29 pm
SYD
-
IAD
25h 09m
2 stops
$1,102Air Canada
Sun, May 3 - Sun, May 17
Air Canada Logo
9:55 am - 8:20 am
IAD
-
SYD
31h 25m
2 stops
Air Canada Logo
9:20 am - 8:29 pm
SYD
-
IAD
25h 09m
2 stops
$1,103Air Canada
Tue, Mar 31 - Sun, Apr 19
Air Canada Logo
9:00 am - 9:35 am
IAD
-
SYD
32h 35m
2 stops
Air Canada Logo
10:20 am - 8:26 pm
SYD
-
IAD
25h 06m
2 stops
$1,108Air Canada
Wed, Feb 25 - Wed, Mar 11
Air Canada Logo
9:55 am - 8:20 am
IAD
-
SYD
31h 25m
3 stops
Air Canada Logo
9:20 am - 8:29 pm
SYD
-
IAD
25h 09m
2 stops
$1,112Air Canada
Tue, Mar 31 - Sun, Apr 19
Air New Zealand Logo
9:45 am - 9:35 am
IAD
-
SYD
31h 50m
2 stops
Air New Zealand Logo
10:20 am - 11:44 am
SYD
-
IAD
40h 24m
2 stops
$1,130Air New Zealand
Wed, Feb 25 - Tue, Mar 17
Air New Zealand Logo
8:15 am - 7:20 am
IAD
-
SYD
33h 05m
2 stops
Air New Zealand Logo
9:20 am - 8:29 pm
SYD
-
IAD
25h 09m
1 stop
$1,135Air New Zealand
Sun, May 3 - Sun, May 17
Air Canada Logo
9:45 am - 9:35 am
IAD
-
SYD
31h 50m
2 stops
Air Canada Logo
11:20 am - 8:26 pm
SYD
-
IAD
24h 06m
2 stops
$1,141Air Canada
Thu, Mar 5 - Mon, Mar 9
ANA Logo
12:39 pm - 7:20 am
IAD
-
SYD
28h 41m
1 stop
ANA Logo
9:20 am - 9:25 pm
SYD
-
IAD
26h 05m
1 stop
$1,143ANA
Sun, May 3 - Sun, May 17
Air Canada Logo
4:10 pm - 7:20 am
IAD
-
SYD
25h 10m
2 stops
Air Canada Logo
9:20 am - 8:29 pm
SYD
-
IAD
25h 09m
2 stops
$1,145Air Canada
Fri, May 22 - Sun, May 31
Air Canada Logo
9:45 am - 9:35 am
IAD
-
SYD
31h 50m
3 stops
Air Canada Logo
11:20 am - 8:26 pm
SYD
-
IAD
24h 06m
2 stops
$1,150Air Canada
Thu, Mar 5 - Mon, Mar 9

Air Canada flights from Washington, D.C. Dulles Intl Airport to Sydney

Our best Air Canada deals on Washington, D.C. Dulles Intl Airport to Sydney flight tickets
Air Canada
May 3
IAD9:45 amWashington, D.C. Dulles Intl
31h 35m
2 stops
SYD7:20 amSydney Kingsford Smith
May 17
SYD9:20 amSydney Kingsford Smith
25h 09m
2 stops
IAD8:29 pmWashington, D.C. Dulles Intl
$1,102
Air Canada
Mar 31
IAD9:55 amWashington, D.C. Dulles Intl
31h 25m
2 stops
SYD8:20 amSydney Kingsford Smith
Apr 19
SYD9:20 amSydney Kingsford Smith
25h 09m
2 stops
IAD8:29 pmWashington, D.C. Dulles Intl
$1,103
Air Canada
Feb 25
IAD9:00 amWashington, D.C. Dulles Intl
32h 35m
2 stops
SYD9:35 amSydney Kingsford Smith
Mar 11
SYD10:20 amSydney Kingsford Smith
25h 06m
2 stops
IAD8:26 pmWashington, D.C. Dulles Intl
$1,108

Turkish Airlines flights from Washington, D.C. Dulles Intl Airport to Sydney

Our best Turkish Airlines deals on Washington, D.C. Dulles Intl Airport to Sydney flight tickets
Turkish Airlines
Feb 10
IAD9:15 pmWashington, D.C. Dulles Intl
54h 05m
2 stops
SYD7:20 pmSydney Kingsford Smith
Apr 14
SYD9:05 pmSydney Kingsford Smith
36h 45m
2 stops
IAD7:50 pmWashington, D.C. Dulles Intl
$1,316
Turkish Airlines
Feb 19
IAD9:15 pmWashington, D.C. Dulles Intl
54h 05m
2 stops
SYD7:20 pmSydney Kingsford Smith
Mar 16
SYD9:15 pmSydney Kingsford Smith
38h 05m
2 stops
IAD8:20 pmWashington, D.C. Dulles Intl
$1,354
Turkish Airlines
Feb 20
IAD9:15 pmWashington, D.C. Dulles Intl
54h 05m
2 stops
SYD7:20 pmSydney Kingsford Smith
Mar 2
SYD9:15 pmSydney Kingsford Smith
38h 05m
2 stops
IAD7:20 pmWashington, D.C. Dulles Intl
$1,393

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport 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, momondo users made 832,500 searches. Data last updated February 8, 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

Fly to

Route

Depart

Return

Price

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sun 5/3

9:45 am-7:20 am

2 stops31h 35m

Sydney Kingsford Smith

Sun 5/17

9:20 am-8:29 pm

2 stops25h 09m

$1,102

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 3/31

9:55 am-8:20 am

2 stops31h 25m

Sydney Kingsford Smith

Sun 4/19

9:20 am-8:29 pm

2 stops25h 09m

$1,103

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Wed 2/25

9:00 am-9:35 am

2 stops32h 35m

Sydney Kingsford Smith

Wed 3/11

10:20 am-8:26 pm

2 stops25h 06m

$1,108

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 3/31

9:55 am-8:20 am

3 stops31h 25m

Sydney Kingsford Smith

Sun 4/19

9:20 am-8:29 pm

2 stops25h 09m

$1,112

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Wed 2/25

9:45 am-9:35 am

2 stops31h 50m

Sydney Kingsford Smith

Tue 3/17

10:20 am-11:44 am

2 stops40h 24m

$1,130

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sun 5/3

8:15 am-7:20 am

2 stops33h 05m

Sydney Kingsford Smith

Sun 5/17

9:20 am-8:29 pm

1 stop25h 09m

$1,135

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Thu 3/5

9:45 am-9:35 am

2 stops31h 50m

Sydney Kingsford Smith

Mon 3/9

11:20 am-8:26 pm

2 stops24h 06m

$1,141

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sun 5/3

12:39 pm-7:20 am

1 stop28h 41m

Sydney Kingsford Smith

Sun 5/17

9:20 am-9:25 pm

1 stop26h 05m

$1,143

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Fri 5/22

4:10 pm-7:20 am

2 stops25h 10m

Sydney Kingsford Smith

Sun 5/31

9:20 am-8:29 pm

2 stops25h 09m

$1,145

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Thu 3/5

9:45 am-9:35 am

3 stops31h 50m

Sydney Kingsford Smith

Mon 3/9

11:20 am-8:26 pm

2 stops24h 06m

$1,150

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Sydney from

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to Sydney

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Washington, D.C. Dulles Intl Airport and Sydney?

What is the cheapest month to fly to Sydney?

In general, May is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $975. If you are unable to visit Sydney during the month of May, then departing from Washington, D.C. Dulles Intl Airport during the month April is also very affordable. Most momondo users find prices during this month for around $988.

How far in advance should I book a flight to Sydney?

You are more likely to see cheaper flights to Sydney from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $1,357 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Washington, D.C. Dulles Intl Airport for as low as $655 on momondo.

Can stopping save me money on Washington, D.C. Dulles Intl Airport to Sydney flights?

You could potentially save up to 22% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to Sydney flight.

How have Washington, D.C. Dulles Intl Airport to Sydney flight prices changed over time?

When to book flights from Washington, D.C. Dulles Intl Airport to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl Airport to Sydney according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. Dulles Intl Airport to Sydney (IAD to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to Sydney

Fastest flight time

25h 10m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to Sydney takes 25h 10m
There are no direct flights from Washington, D.C. Dulles Intl Airport to Sydney. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to Sydney.
Search flight deals

  • How far is Washington, D.C. Dulles Intl to Sydney Kingsford Smith by plane?

    The straight-line distance from Washington, D.C. Dulles Intl to Sydney Kingsford Smith is 9734.0 mi. Typically, this will take 25h 10m by plane in normal conditions.

  • When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Sydney Kingsford Smith Airport?

    Prices for flights from Washington, D.C. Dulles Intl Airport to Sydney Kingsford Smith Airport are updated daily.

  • How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to Sydney Kingsford Smith Airport?

  • How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to Sydney Kingsford Smith Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to Sydney Kingsford Smith Airport.

  • What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

    The travel and health documents required for your trip to Sydney Kingsford Smith Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Sydney Kingsford Smith Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Washington, D.C. Dulles Intl Airport to Sydney?

Best airlines flying from Washington, D.C. Dulles Intl Airport to Sydney

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Sydney with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $377Free CancellationRating
7.4
9,255 reviews
Search United Airlines flights
DeltaPriceFrom $609Free CancellationRating
7.9
8,173 reviews
Search Delta flights
Qantas AirwaysPriceFrom $827Free CancellationRating
7.5
988 reviews
Search Qantas Airways flights
American AirlinesPriceFrom $832Free CancellationRating
7.2
11,249 reviews
Search American Airlines flights
Air CanadaPriceFrom $854Free CancellationRating
7.1
10,697 reviews
Search Air Canada flights
Air New ZealandPriceFrom $1,289Free CancellationRating
8.0
582 reviews
Search Air New Zealand flights

Traveling to a place near Sydney?

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

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Sydney?

It is quick and easy to find Washington, D.C. to Sydney flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Sydney that suits you.

Can I find flights from Washington, D.C. to Sydney with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Sydney from Washington, D.C. with this policy.

How can momondo help me find flights from Washington, D.C. to Sydney?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington, D.C. to Sydney.

I’m not ready to book a flight from Washington, D.C. to Sydney right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Washington, D.C. to Sydney now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Sydney and let you know when they change.

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