Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Washington, D.C. Dulles Intl Airport to Sydney from $532

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 2/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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 - 9:35 am
IAD
-
SYD
31h 50m2 stops
Air Canada Logo
11:20 am - 11:35 am
SYD
-
IAD
40h 15m2 stops
$1,003Air Canada
Tue, Feb 3 - Tue, Feb 10
Air Canada Logo
9:45 am - 9:35 am
IAD
-
SYD
31h 50m2 stops
Air Canada Logo
11:20 am - 8:54 pm
SYD
-
IAD
25h 34m2 stops
$1,004Air Canada
Tue, Jan 27 - Tue, Feb 3
Multiple Airlines Logo
2:24 pm - 9:35 am
IAD
-
SYD
27h 11m2 stops
Multiple Airlines Logo
11:20 am - 8:54 pm
SYD
-
IAD
25h 34m2 stops
$1,005Multiple Airlines
Sun, Feb 1 - Mon, Feb 23
Air Canada Logo
9:45 am - 9:35 am
IAD
-
SYD
31h 50m3 stops
Air Canada Logo
11:20 am - 11:35 am
SYD
-
IAD
40h 15m2 stops
$1,010Air Canada
Tue, Feb 3 - Tue, Feb 10
Air Canada Logo
9:00 am - 9:35 am
IAD
-
SYD
32h 35m1 stop
Air Canada Logo
11:20 am - 11:35 am
SYD
-
IAD
40h 15m2 stops
$1,012Air Canada
Tue, Feb 3 - Tue, Feb 10
Air Canada Logo
9:45 am - 9:35 am
IAD
-
SYD
31h 50m2 stops
Air Canada Logo
7:00 am - 6:25 am
SYD
-
IAD
37h 25m2 stops
$1,015Air Canada
Tue, Feb 17 - Tue, May 26
Air Canada Logo
9:45 am - 9:35 am
IAD
-
SYD
31h 50m3 stops
Air Canada Logo
6:30 am - 6:25 am
SYD
-
IAD
37h 55m2 stops
$1,022Air Canada
Tue, Feb 17 - Tue, May 26
Air Canada Logo
9:00 am - 9:35 am
IAD
-
SYD
32h 35m1 stop
Air Canada Logo
7:00 am - 6:25 am
SYD
-
IAD
37h 25m2 stops
$1,023Air Canada
Tue, Feb 17 - Tue, May 26
Air Canada Logo
9:45 am - 9:35 am
IAD
-
SYD
31h 50m2 stops
Air Canada Logo
11:20 am - 8:54 pm
SYD
-
IAD
25h 34m2 stops
$1,045Air Canada
Sat, Feb 7 - Tue, Feb 17
Air Canada Logo
10:06 pm - 9:35 am
IAD
-
SYD
43h 29m2 stops
Air Canada Logo
11:20 am - 8:54 pm
SYD
-
IAD
25h 34m2 stops
$1,049Air Canada
Fri, Jan 30 - Sun, Feb 8

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
Feb 3
IAD9:45 amWashington, D.C. Dulles Intl
31h 50m
2 stops
SYD9:35 amSydney Kingsford Smith
Feb 10
SYD11:20 amSydney Kingsford Smith
40h 15m
2 stops
IAD11:35 amWashington, D.C. Dulles Intl
$1,003
Find similar
Air Canada
Jan 27
IAD9:45 amWashington, D.C. Dulles Intl
31h 50m
2 stops
SYD9:35 amSydney Kingsford Smith
Feb 3
SYD11:20 amSydney Kingsford Smith
25h 34m
2 stops
IAD8:54 pmWashington, D.C. Dulles Intl
$1,004
Find similar
Air Canada
Feb 3
IAD9:45 amWashington, D.C. Dulles Intl
31h 50m
3 stops
SYD9:35 amSydney Kingsford Smith
Feb 10
SYD11:20 amSydney Kingsford Smith
40h 15m
2 stops
IAD11:35 amWashington, D.C. Dulles Intl
$1,010
Find similar

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

Our best Delta deals on Washington, D.C. Dulles Intl Airport to Sydney flight tickets
Delta
Dec 25
IAD4:17 pmWashington, D.C. Dulles Intl
24h 13m
2 stops
SYD8:30 amSydney Kingsford Smith
Jan 15
SYD2:15 pmSydney Kingsford Smith
24h 51m
2 stops
IAD11:06 pmWashington, D.C. Dulles Intl
$1,968
Find similar
Delta
Dec 24
IAD12:32 pmWashington, D.C. Dulles Intl
27h 58m
2 stops
SYD8:30 amSydney Kingsford Smith
Jan 10
SYD10:40 amSydney Kingsford Smith
28h 26m
2 stops
IAD11:06 pmWashington, D.C. Dulles Intl
$2,100
Find similar
Delta
Dec 24
IAD7:05 amWashington, D.C. Dulles Intl
33h 25m
2 stops
SYD8:30 amSydney Kingsford Smith
Jan 10
SYD10:40 amSydney Kingsford Smith
28h 26m
2 stops
IAD11:06 pmWashington, D.C. Dulles Intl
$2,257
Find similar

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 December 15, 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

Fly to

Route

Depart

Return

Price

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 2/3

9:45 am-9:35 am

2 stops31h 50m

Sydney Kingsford Smith

Tue 2/10

11:20 am-11:35 am

2 stops40h 15m

$1,003

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 1/27

9:45 am-9:35 am

2 stops31h 50m

Sydney Kingsford Smith

Tue 2/3

11:20 am-8:54 pm

2 stops25h 34m

$1,004

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sun 2/1

2:24 pm-9:35 am

2 stops27h 11m

Sydney Kingsford Smith

Mon 2/23

11:20 am-8:54 pm

2 stops25h 34m

$1,005

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 2/3

9:45 am-9:35 am

3 stops31h 50m

Sydney Kingsford Smith

Tue 2/10

11:20 am-11:35 am

2 stops40h 15m

$1,010

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 2/3

9:00 am-9:35 am

1 stop32h 35m

Sydney Kingsford Smith

Tue 2/10

11:20 am-11:35 am

2 stops40h 15m

$1,012

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 2/17

9:45 am-9:35 am

2 stops31h 50m

Sydney Kingsford Smith

Tue 5/26

7:00 am-6:25 am

2 stops37h 25m

$1,015

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 2/17

9:45 am-9:35 am

3 stops31h 50m

Sydney Kingsford Smith

Tue 5/26

6:30 am-6:25 am

2 stops37h 55m

$1,022

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 2/17

9:00 am-9:35 am

1 stop32h 35m

Sydney Kingsford Smith

Tue 5/26

7:00 am-6:25 am

2 stops37h 25m

$1,023

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sat 2/7

9:45 am-9:35 am

2 stops31h 50m

Sydney Kingsford Smith

Tue 2/17

11:20 am-8:54 pm

2 stops25h 34m

$1,045

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Fri 1/30

10:06 pm-9:35 am

2 stops43h 29m

Sydney Kingsford Smith

Sun 2/8

11:20 am-8:54 pm

2 stops25h 34m

$1,049

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 $880. If you are unable to visit Sydney during the month of May, then departing from Washington, D.C. Dulles Intl Airport during the month February is also very affordable. Most momondo users find prices during this month for around $910.

What is the cheapest day to depart on your flight to Sydney?

The cheapest day to depart from Washington, D.C. Dulles Intl Airport to Sydney is on a Tuesday when prices can be found for as low as $1,353. The most expensive day to fly to Sydney is Friday, with ticket prices averaging around $1,485.

What is the cheapest time of day to depart on your flight to Sydney?

According to our data, the cheapest time of day to fly to Sydney is at noon. momondo users have found flights departing from Washington, D.C. Dulles Intl Airport to Sydney at noon for as low as $1,219. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Sydney are more costly in the evening, with an average ticket price of $1,464. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

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 $1,280 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 $623 on momondo.

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

You could potentially save up to 53% 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?

As of December 2025, prices for Washington, D.C. Dulles Intl Airport to Sydney flights are approximately 66% cheaper when compared to flights at the same time last year.

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

24h 13m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to Sydney takes 24h 13m
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 24h 13m 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 $379Free CancellationRating
7.4
9,094 reviews
Search United Airlines flights
DeltaPriceFrom $544Free CancellationRating
7.9
8,008 reviews
Search Delta flights
Qantas AirwaysPriceFrom $816Free CancellationRating
7.5
946 reviews
Search Qantas Airways flights
American AirlinesPriceFrom $830Free CancellationRating
7.2
11,050 reviews
Search American Airlines flights
Air CanadaPriceFrom $854Free CancellationRating
7.1
10,527 reviews
Search Air Canada flights
Air New ZealandPriceFrom $1,289Free CancellationRating
8.0
552 reviews
Search Air New Zealand flights
ANAPriceFrom $1,370Free CancellationRating
8.4
1,023 reviews
Search ANA flights

Traveling to a place near Sydney?

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

An easier way to manage your Sydney trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 1/14
Wed 1/21
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Australia