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Cheap flights from Washington, D.C. Dulles Intl Airport to Sydney from $747

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 10/3. 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 return flights

Enter your travel dates to find the best prices.
Air Canada Logo
09:45 - 09:35
IAD
-
SYD
31h 50m
2 stops
Air Canada Logo
10:20 - 20:26
SYD
-
IAD
25h 06m
2 stops
$1,571Air Canada
Wed, 25 Feb - Wed, 11 Mar
Air Canada Logo
09:55 - 08:35
IAD
-
SYD
31h 40m
2 stops
Air Canada Logo
09:20 - 20:29
SYD
-
IAD
25h 09m
2 stops
$1,573Air Canada
Wed, 25 Mar - Wed, 15 Apr
Air Canada Logo
16:10 - 07:20
IAD
-
SYD
25h 10m
2 stops
Air Canada Logo
09:20 - 20:24
SYD
-
IAD
25h 04m
2 stops
$1,578Air Canada
Tue, 16 Jun - Tue, 21 Jul
Air Canada Logo
09:55 - 08:20
IAD
-
SYD
31h 25m
3 stops
Air Canada Logo
09:20 - 20:29
SYD
-
IAD
25h 09m
2 stops
$1,582Air Canada
Tue, 31 Mar - Sun, 19 Apr
Air New Zealand Logo
12:38 - 07:20
IAD
-
SYD
28h 42m
2 stops
Air New Zealand Logo
09:20 - 21:25
SYD
-
IAD
26h 05m
2 stops
$1,595Air New Zealand
Tue, 21 Apr - Tue, 5 May
ANA Logo
12:40 - 07:20
IAD
-
SYD
28h 40m
1 stop
ANA Logo
09:20 - 21:25
SYD
-
IAD
26h 05m
2 stops
$1,608ANA
Wed, 22 Apr - Wed, 6 May
Air New Zealand Logo
09:45 - 09:35
IAD
-
SYD
31h 50m
2 stops
Air New Zealand Logo
10:20 - 11:44
SYD
-
IAD
40h 24m
2 stops
$1,611Air New Zealand
Wed, 25 Feb - Tue, 17 Mar
Air New Zealand Logo
08:15 - 07:20
IAD
-
SYD
33h 05m
2 stops
Air New Zealand Logo
09:20 - 20:29
SYD
-
IAD
25h 09m
1 stop
$1,618Air New Zealand
Sun, 3 May - Sun, 17 May
Multiple Airlines Logo
09:00 - 07:20
IAD
-
SYD
32h 20m
1 stop
Multiple Airlines Logo
09:20 - 20:29
SYD
-
IAD
25h 09m
1 stop
$1,620Multiple Airlines
Mon, 20 Apr - Tue, 5 May
Air Canada Logo
09:55 - 07:20
IAD
-
SYD
31h 25m
2 stops
Air Canada Logo
09:20 - 20:29
SYD
-
IAD
25h 09m
2 stops
$1,625Air Canada
Mon, 6 Apr - Thu, 16 Apr

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
25 Feb
IAD09:45Washington, D.C. Dulles Intl
31h 50m
2 stops
SYD09:35Sydney Kingsford Smith
11 Mar
SYD10:20Sydney Kingsford Smith
25h 06m
2 stops
IAD20:26Washington, D.C. Dulles Intl
$1,571
Air Canada
25 Mar
IAD09:55Washington, D.C. Dulles Intl
31h 40m
2 stops
SYD08:35Sydney Kingsford Smith
15 Apr
SYD09:20Sydney Kingsford Smith
25h 09m
2 stops
IAD20:29Washington, D.C. Dulles Intl
$1,572
Air Canada
16 June
IAD16:10Washington, D.C. Dulles Intl
25h 10m
2 stops
SYD07:20Sydney Kingsford Smith
21 July
SYD09:20Sydney Kingsford Smith
25h 04m
2 stops
IAD20:24Washington, D.C. Dulles Intl
$1,578

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
17 Feb
IAD17:37Washington, D.C. Dulles Intl
36h 18m
2 stops
SYD21:55Sydney Kingsford Smith
26 May
SYD12:00Sydney Kingsford Smith
20h 31m
1 stop
IAD18:31Washington, D.C. Dulles Intl
$1,789
Qantas Airways
17 Feb
IAD17:37Washington, D.C. Dulles Intl
36h 18m
2 stops
SYD21:55Sydney Kingsford Smith
26 May
SYD12:00Sydney Kingsford Smith
20h 31m
1 stop
IAD18:31Washington, D.C. Dulles Intl
$1,793
Qantas Airways
12 Feb
IAD17:52Washington, D.C. Dulles Intl
34h 33m
2 stops
SYD20:25Sydney Kingsford Smith
23 Feb
SYD14:05Sydney Kingsford Smith
24h 48m
1 stop
IAD22:53Washington, D.C. Dulles Intl
$1,876

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 5 February 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

Wed 25/2

09:45-09:35

2 stops31h 50m

Sydney Kingsford Smith

Wed 11/3

10:20-20:26

2 stops25h 06m

$1,571

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Wed 25/3

09:55-08:35

2 stops31h 40m

Sydney Kingsford Smith

Wed 15/4

09:20-20:29

2 stops25h 09m

$1,572

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 16/6

16:10-07:20

2 stops25h 10m

Sydney Kingsford Smith

Tue 21/7

09:20-20:24

2 stops25h 04m

$1,578

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 31/3

09:55-08:20

3 stops31h 25m

Sydney Kingsford Smith

Sun 19/4

09:20-20:29

2 stops25h 09m

$1,582

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 21/4

12:38-07:20

2 stops28h 42m

Sydney Kingsford Smith

Tue 5/5

09:20-21:25

2 stops26h 05m

$1,595

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Wed 22/4

12:40-07:20

1 stop28h 40m

Sydney Kingsford Smith

Wed 6/5

09:20-21:25

2 stops26h 05m

$1,608

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Wed 25/2

09:45-09:35

2 stops31h 50m

Sydney Kingsford Smith

Tue 17/3

10:20-11:44

2 stops40h 24m

$1,611

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sun 3/5

08:15-07:20

2 stops33h 05m

Sydney Kingsford Smith

Sun 17/5

09:20-20:29

1 stop25h 09m

$1,618

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Mon 20/4

09:00-07:20

1 stop32h 20m

Sydney Kingsford Smith

Tue 5/5

09:20-20:29

1 stop25h 09m

$1,620

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Mon 6/4

09:55-07:20

2 stops31h 25m

Sydney Kingsford Smith

Thu 16/4

09:20-20:29

2 stops25h 09m

$1,625

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 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 $1,390. If you aren’t able to travel to Sydney during the month of May, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $1,409.

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 $1,935 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 $934 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 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 00m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to Sydney takes 23h 00m
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 23h 00m, 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 $1,849Free cancellationRating
7.4
9,240 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
Leura
Manly
Coogee
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.

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