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Cheap flights from Washington, D.C. Dulles Intl Airport to Sydney from $868

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 28/8. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

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
07:48 - 11:50
IAD
-
SYD
38h 02m
3 stops
Multiple Airlines Logo
13:15 - 17:14
SYD
-
IAD
41h 59m
3 stops
$1,659Multiple Airlines
Mon, 17 Aug - Wed, 26 Aug
Multiple Airlines Logo
09:50 - 11:50
IAD
-
SYD
36h 00m
3 stops
Multiple Airlines Logo
13:15 - 17:14
SYD
-
IAD
41h 59m
3 stops
$1,661Multiple Airlines
Tue, 11 Aug - Tue, 18 Aug
Multiple Airlines Logo
11:05 - 11:50
IAD
-
SYD
34h 45m
3 stops
Multiple Airlines Logo
13:15 - 19:09
SYD
-
IAD
43h 54m
3 stops
$1,744Multiple Airlines
Wed, 2 Sep - Wed, 9 Sep
Multiple Airlines Logo
09:50 - 11:50
IAD
-
SYD
36h 00m
3 stops
Multiple Airlines Logo
13:15 - 12:26
SYD
-
IAD
37h 11m
3 stops
$1,750Multiple Airlines
Mon, 27 Jul - Fri, 7 Aug
Multiple Airlines Logo
07:48 - 07:05
IAD
-
SYD
33h 17m
2 stops
Multiple Airlines Logo
09:10 - 17:14
SYD
-
IAD
46h 04m
2 stops
$1,896Multiple Airlines
Mon, 17 Aug - Wed, 26 Aug
Multiple Airlines Logo
09:50 - 07:05
IAD
-
SYD
31h 15m
2 stops
Multiple Airlines Logo
09:10 - 17:14
SYD
-
IAD
46h 04m
2 stops
$1,897Multiple Airlines
Tue, 11 Aug - Tue, 18 Aug
Multiple Airlines Logo
11:05 - 07:05
IAD
-
SYD
30h 00m
2 stops
Multiple Airlines Logo
09:10 - 00:28
SYD
-
IAD
29h 18m
2 stops
$1,901Multiple Airlines
Wed, 2 Sep - Wed, 9 Sep
Multiple Airlines Logo
11:05 - 11:50
IAD
-
SYD
34h 45m
3 stops
Multiple Airlines Logo
13:15 - 19:09
SYD
-
IAD
43h 54m
3 stops
$1,936Multiple Airlines
Wed, 2 Sep - Sun, 13 Sep
Multiple Airlines Logo
12:51 - 12:35
IAD
-
SYD
32h 44m
3 stops
Multiple Airlines Logo
14:00 - 10:05
SYD
-
IAD
36h 05m
3 stops
$1,950Multiple Airlines
Fri, 23 Oct - Thu, 12 Nov
Multiple Airlines Logo
06:49 - 11:50
IAD
-
SYD
39h 01m
3 stops
Multiple Airlines Logo
06:15 - 12:47
SYD
-
IAD
44h 32m
3 stops
$1,962Multiple Airlines
Sat, 25 Jul - Wed, 29 Jul

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

Our best Air New Zealand deals on Washington, D.C. Dulles Intl Airport to Sydney flight tickets
Air New Zealand
4 Oct
IAD12:58Washington, D.C. Dulles Intl
28h 47m
2 stops
SYD08:45Sydney Kingsford Smith
18 Oct
SYD11:55Sydney Kingsford Smith
27h 46m
2 stops
IAD00:41Washington, D.C. Dulles Intl
$2,067
Air New Zealand
9 Aug
IAD17:55Washington, D.C. Dulles Intl
24h 50m
2 stops
SYD08:45Sydney Kingsford Smith
18 Aug
SYD09:55Sydney Kingsford Smith
34h 58m
2 stops
IAD06:53Washington, D.C. Dulles Intl
$2,075
Air New Zealand
30 Sept
IAD15:36Washington, D.C. Dulles Intl
26h 09m
2 stops
SYD07:45Sydney Kingsford Smith
12 Oct
SYD11:55Sydney Kingsford Smith
27h 46m
2 stops
IAD00:41Washington, D.C. Dulles Intl
$2,086

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

Our best Etihad Airways deals on Washington, D.C. Dulles Intl Airport to Sydney flight tickets
Etihad Airways
13 Sept
IAD15:10Washington, D.C. Dulles Intl
49h 00m
1 stop
SYD06:10Sydney Kingsford Smith
23 Sept
SYD15:40Sydney Kingsford Smith
32h 05m
1 stop
IAD09:45Washington, D.C. Dulles Intl
$2,109
Etihad Airways
1 Sept
IAD15:10Washington, D.C. Dulles Intl
49h 00m
1 stop
SYD06:10Sydney Kingsford Smith
29 Sept
SYD15:40Sydney Kingsford Smith
32h 05m
1 stop
IAD09:45Washington, D.C. Dulles Intl
$2,113
Etihad Airways
8 Sept
IAD15:10Washington, D.C. Dulles Intl
49h 00m
1 stop
SYD06:10Sydney Kingsford Smith
21 Sept
SYD20:50Sydney Kingsford Smith
50h 55m
1 stop
IAD09:45Washington, D.C. Dulles Intl
$2,115

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 14 July 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

Mon 17/8

07:48-11:50

3 stops38h 02m

Sydney Kingsford Smith

Wed 26/8

13:15-17:14

3 stops41h 59m

$1,659

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 11/8

09:50-11:50

3 stops36h 00m

Sydney Kingsford Smith

Tue 18/8

13:15-17:14

3 stops41h 59m

$1,660

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Wed 2/9

11:05-11:50

3 stops34h 45m

Sydney Kingsford Smith

Wed 9/9

13:15-19:09

3 stops43h 54m

$1,744

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Mon 27/7

09:50-11:50

3 stops36h 00m

Sydney Kingsford Smith

Fri 7/8

13:15-12:26

3 stops37h 11m

$1,750

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Mon 17/8

07:48-07:05

2 stops33h 17m

Sydney Kingsford Smith

Wed 26/8

09:10-17:14

2 stops46h 04m

$1,896

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 11/8

09:50-07:05

2 stops31h 15m

Sydney Kingsford Smith

Tue 18/8

09:10-17:14

2 stops46h 04m

$1,897
Fastest return journey

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Wed 2/9

11:05-07:05

2 stops30h 00m

Sydney Kingsford Smith

Wed 9/9

09:10-00:28

2 stops29h 18m

$1,901

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Wed 2/9

11:05-11:50

3 stops34h 45m

Sydney Kingsford Smith

Sun 13/9

13:15-19:09

3 stops43h 54m

$1,936

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Fri 23/10

12:51-12:35

3 stops32h 44m

Sydney Kingsford Smith

Thu 12/11

14:00-10:05

3 stops36h 05m

$1,950

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sat 25/7

06:49-11:50

3 stops39h 01m

Sydney Kingsford Smith

Wed 29/7

06:15-12:47

3 stops44h 32m

$1,962

Flights are sorted by cheapest return 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?

The month of November is, on average, the cheapest month to fly to Sydney from Washington, D.C. Dulles Intl Airport, with most prices found around $1,500. If you aren’t able to travel to Sydney during the month of November, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $1,858.

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport 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 $2,345 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 $1,613 on momondo.

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

23h 30m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to Sydney takes 23h 30m
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

Frequently asked questions about flying from Washington, D.C. Dulles Intl Airport to Sydney

  • 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 23h 30m, 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 $1,871Free cancellationRating
7.4
9,988 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
Manly
Coogee
Lithgow
Leura
Cronulla
Bondi Beach
Randwick
Charlestown
Swansea
Newport

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?

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