Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Washington, D.C. Dulles Intl Airport to Sydney from $739

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 27/4. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise 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 return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
06:10 - 11:50
IAD
-
SYD
39h 40m
3 stops
Multiple Airlines Logo
13:15 - 10:12
SYD
-
IAD
34h 57m
3 stops
$1,500Multiple Airlines
Thu, 30 Apr - Thu, 7 May
Multiple Airlines Logo
11:07 - 11:50
IAD
-
SYD
34h 43m
3 stops
Multiple Airlines Logo
13:15 - 10:12
SYD
-
IAD
34h 57m
3 stops
$1,554Multiple Airlines
Tue, 5 May - Sun, 17 May
Multiple Airlines Logo
07:05 - 11:50
IAD
-
SYD
38h 45m
3 stops
Multiple Airlines Logo
06:00 - 10:12
SYD
-
IAD
42h 12m
3 stops
$1,576Multiple Airlines
Sat, 25 Apr - Tue, 5 May
Multiple Airlines Logo
06:20 - 11:50
IAD
-
SYD
39h 30m
3 stops
Multiple Airlines Logo
13:15 - 10:22
SYD
-
IAD
35h 07m
3 stops
$1,609Multiple Airlines
Sun, 19 Apr - Sat, 25 Apr
Multiple Airlines Logo
09:12 - 11:50
IAD
-
SYD
36h 38m
3 stops
Multiple Airlines Logo
13:15 - 10:12
SYD
-
IAD
34h 57m
3 stops
$1,624Multiple Airlines
Thu, 28 May - Sun, 7 Jun
Multiple Airlines Logo
11:12 - 12:05
IAD
-
SYD
34h 53m
3 stops
Multiple Airlines Logo
13:15 - 10:12
SYD
-
IAD
34h 57m
3 stops
$1,646Multiple Airlines
Mon, 11 May - Mon, 18 May
Qantas Airways Logo
17:59 - 06:55
IAD
-
SYD
22h 56m
1 stop
Qantas Airways Logo
12:00 - 23:26
SYD
-
IAD
25h 26m
1 stop
$1,659Qantas Airways
Mon, 27 Apr - Mon, 4 May
Qantas Airways Logo
19:24 - 06:55
IAD
-
SYD
21h 31m
1 stop
Qantas Airways Logo
12:00 - 22:47
SYD
-
IAD
24h 47m
1 stop
$1,660Qantas Airways
Wed, 27 May - Mon, 8 Jun
Qantas Airways Logo
17:59 - 06:55
IAD
-
SYD
22h 56m
1 stop
Qantas Airways Logo
12:00 - 22:47
SYD
-
IAD
24h 47m
1 stop
$1,662Qantas Airways
Thu, 14 May - Mon, 25 May
Multiple Airlines Logo
11:12 - 12:05
IAD
-
SYD
34h 53m
3 stops
Multiple Airlines Logo
13:15 - 10:12
SYD
-
IAD
34h 57m
3 stops
$1,673Multiple Airlines
Mon, 11 May - Mon, 18 May

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

Our best Qantas Airways deals on Washington, D.C. Dulles Intl Airport to Sydney flight tickets
Qantas Airways
5 Apr
IAD19:09Washington, D.C. Dulles Intl
21h 46m
1 stop
SYD06:55Sydney Kingsford Smith
27 Apr
SYD12:00Sydney Kingsford Smith
25h 26m
1 stop
IAD23:26Washington, D.C. Dulles Intl
$1,659
Qantas Airways
5 Apr
IAD19:09Washington, D.C. Dulles Intl
21h 46m
1 stop
SYD06:55Sydney Kingsford Smith
27 Apr
SYD12:00Sydney Kingsford Smith
25h 26m
1 stop
IAD23:26Washington, D.C. Dulles Intl
$1,660
Qantas Airways
14 May
IAD17:59Washington, D.C. Dulles Intl
22h 56m
1 stop
SYD06:55Sydney Kingsford Smith
25 May
SYD12:00Sydney Kingsford Smith
24h 47m
1 stop
IAD22:47Washington, D.C. Dulles Intl
$1,662

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
7 Apr
IAD13:20Washington, D.C. Dulles Intl
39h 50m
2 stops
SYD19:10Sydney Kingsford Smith
21 Apr
SYD21:05Sydney Kingsford Smith
52h 30m
2 stops
IAD11:35Washington, D.C. Dulles Intl
$1,911
Turkish Airlines
12 Apr
IAD13:20Washington, D.C. Dulles Intl
39h 50m
2 stops
SYD19:10Sydney Kingsford Smith
26 Apr
SYD21:05Sydney Kingsford Smith
52h 30m
2 stops
IAD11:35Washington, D.C. Dulles Intl
$2,113
Turkish Airlines
10 Apr
IAD21:45Washington, D.C. Dulles Intl
31h 25m
2 stops
SYD19:10Sydney Kingsford Smith
24 Apr
SYD21:05Sydney Kingsford Smith
52h 30m
2 stops
IAD11:35Washington, D.C. Dulles Intl
$2,197

momondo Fare Finder

 
Customise 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 78,305 searches. Data last updated 1 April 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

Cheapest return flight

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Thu 30/4

06:10-11:50

3 stops39h 40m

Sydney Kingsford Smith

Thu 7/5

13:15-10:12

3 stops34h 57m

$1,500

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 5/5

11:07-11:50

3 stops34h 43m

Sydney Kingsford Smith

Sun 17/5

13:15-10:12

3 stops34h 57m

$1,554

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sat 25/4

07:05-11:50

3 stops38h 45m

Sydney Kingsford Smith

Tue 5/5

06:00-10:12

3 stops42h 12m

$1,576

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sun 19/4

06:20-11:50

3 stops39h 30m

Sydney Kingsford Smith

Sat 25/4

13:15-10:22

3 stops35h 07m

$1,609

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Thu 28/5

09:12-11:50

3 stops36h 38m

Sydney Kingsford Smith

Sun 7/6

13:15-10:12

3 stops34h 57m

$1,624

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Mon 11/5

11:12-12:05

3 stops34h 53m

Sydney Kingsford Smith

Mon 18/5

13:15-10:12

3 stops34h 57m

$1,646

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Mon 27/4

17:59-06:55

1 stop22h 56m

Sydney Kingsford Smith

Mon 4/5

12:00-23:26

1 stop25h 26m

$1,659
Fastest return journey

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Wed 27/5

19:24-06:55

1 stop21h 31m

Sydney Kingsford Smith

Mon 8/6

12:00-22:47

1 stop24h 47m

$1,660

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Thu 14/5

17:59-06:55

1 stop22h 56m

Sydney Kingsford Smith

Mon 25/5

12:00-22:47

1 stop24h 47m

$1,662

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Mon 11/5

11:12-12:05

3 stops34h 53m

Sydney Kingsford Smith

Mon 18/5

13:15-10:12

3 stops34h 57m

$1,673

Flights are sorted by cheapest return 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?

The month of May is, on average, the cheapest month to fly to Sydney from Washington, D.C. Dulles Intl Airport, with most prices found around $1,845. If you aren’t able to travel to Sydney during the month of May, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $2,254.

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 $2,361 when searching weeks before you fly. 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 $953 on momondo.

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

You could potentially save up to 28% 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 return 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

21h 46m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to Sydney takes 21h 46m
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?

    There are 15665.3 km between Washington, D.C. Dulles Intl and Sydney Kingsford Smith. Flights usually cover this in 21h 46m, depending on flying conditions and air traffic around both airports.

  • 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 refresh 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 offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify 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 necessary travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • 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 $1,887Free cancellationRating
7.4
9,529 reviews
Search United Airlines flights

Travelling to a place near Sydney?

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

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington, D.C. to Sydney for you.

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

Yes. All flights to Sydney from Washington, D.C. on momondo can be compared and filtered by various policies on offer, including flexible booking.

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?

Price alerts on flights to Sydney from Washington, D.C. are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Sydney trip

We make it super easy to schedule, organise 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
Fri 1/5
Fri 8/5
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Australia