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Cheap flights from Washington, D.C. to Sydney from $697

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. to Sydney departing on 16/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

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Find the cheapest flights from Washington, D.C. to Sydney

Cheap return flights

Enter your travel dates to find the best prices.
Air Canada Logo
12:55 - 08:20
DCA
-
SYD
28h 25m
2 stops
Air Canada Logo
09:20 - 08:53
SYD
-
DCA
37h 33m
2 stops
$1,567Air Canada
Tue, 31 Mar - Mon, 20 Apr
Air Canada Logo
09:45 - 07:20
IAD
-
SYD
31h 35m
2 stops
Air Canada Logo
09:20 - 20:29
SYD
-
IAD
25h 09m
2 stops
$1,570Air Canada
Sun, 3 May - Sun, 17 May
Air Canada Logo
09:55 - 08:20
IAD
-
SYD
31h 25m
2 stops
Air Canada Logo
09:20 - 20:29
SYD
-
IAD
25h 09m
2 stops
$1,571Air Canada
Tue, 31 Mar - Sun, 19 Apr
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
$1,610Air 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
$1,617Air New Zealand
Sun, 3 May - Sun, 17 May
Multiple Airlines Logo
09:59 - 07:30
DCA
-
SYD
31h 31m
1 stop
Multiple Airlines Logo
13:15 - 20:06
SYD
-
DCA
44h 51m
2 stops
$1,620Multiple Airlines
Tue, 5 May - Tue, 12 May
Multiple Airlines Logo
09:59 - 07:25
DCA
-
SYD
30h 26m
1 stop
Multiple Airlines Logo
14:00 - 20:00
SYD
-
DCA
45h 00m
2 stops
$1,621Multiple Airlines
Tue, 10 Mar - Tue, 17 Mar
ANA Logo
12:39 - 07:20
IAD
-
SYD
28h 41m
1 stop
ANA Logo
09:20 - 21:25
SYD
-
IAD
26h 05m
1 stop
$1,628ANA
Sun, 3 May - Sun, 17 May
Qantas Airways Logo
15:21 - 06:55
BWI
-
SYD
23h 34m
1 stop
Qantas Airways Logo
06:30 - 18:13
SYD
-
BWI
26h 43m
2 stops
$1,799Qantas Airways
Wed, 25 Feb - Wed, 18 Mar
Qantas Airways Logo
15:21 - 06:55
BWI
-
SYD
23h 34m
1 stop
Qantas Airways Logo
14:55 - 14:30
SYD
-
BWI
39h 35m
2 stops
$1,802Qantas Airways
Fri, 27 Feb - Thu, 5 Mar

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

Our best Air New Zealand deals on Washington, D.C. to Sydney flight tickets
Air New Zealand
2 Aug
IAD08:18Washington, D.C. Dulles Intl
33h 02m
2 stops
SYD07:20Sydney Kingsford Smith
31 Aug
SYD09:20Sydney Kingsford Smith
36h 35m
2 stops
IAD07:55Washington, D.C. Dulles Intl
$1,765
Air New Zealand
1 Aug
IAD22:09Washington, D.C. Dulles Intl
43h 11m
2 stops
SYD07:20Sydney Kingsford Smith
3 Sept
SYD09:20Sydney Kingsford Smith
36h 35m
2 stops
IAD07:55Washington, D.C. Dulles Intl
$1,828
Air New Zealand
28 Mar
IAD22:13Washington, D.C. Dulles Intl
43h 07m
2 stops
SYD08:20Sydney Kingsford Smith
25 Apr
SYD09:20Sydney Kingsford Smith
26h 05m
1 stop
IAD21:25Washington, D.C. Dulles Intl
$1,841

ANA flights from Washington, D.C. to Sydney

Our best ANA deals on Washington, D.C. to Sydney flight tickets
ANA
8 Mar
IAD12:33Washington, D.C. Dulles Intl
29h 02m
1 stop
SYD08:35Sydney Kingsford Smith
14 Apr
SYD09:20Sydney Kingsford Smith
26h 05m
1 stop
IAD21:25Washington, D.C. Dulles Intl
$1,788
ANA
31 Mar
DCA06:59Washington, D.C. Reagan-National
34h 21m
1 stop
SYD08:20Sydney Kingsford Smith
20 Apr
SYD09:20Sydney Kingsford Smith
37h 33m
2 stops
DCA08:53Washington, D.C. Reagan-National
$1,789
ANA
8 Mar
IAD12:33Washington, D.C. Dulles Intl
29h 02m
1 stop
SYD08:35Sydney Kingsford Smith
17 Apr
SYD09:20Sydney Kingsford Smith
26h 05m
1 stop
IAD21:25Washington, D.C. Dulles Intl
$1,851

momondo Fare Finder

 
Customise your flight search to find flights from Washington, D.C. 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 9 February 2026.
Use the filters below to find and compare flights from Washington, D.C. to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Sydney

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Tue 31/3

12:55-08:20

2 stops28h 25m

Sydney Kingsford Smith

Mon 20/4

09:20-08:53

2 stops37h 33m

$1,567

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sun 3/5

09:45-07:20

2 stops31h 35m

Sydney Kingsford Smith

Sun 17/5

09:20-20:29

2 stops25h 09m

$1,570

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 31/3

09:55-08:20

2 stops31h 25m

Sydney Kingsford Smith

Sun 19/4

09:20-20:29

2 stops25h 09m

$1,571

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

$1,610

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

$1,617

Washington, D.C.Sydney

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Tue 5/5

09:59-07:30

1 stop31h 31m

Sydney Kingsford Smith

Tue 12/5

13:15-20:06

2 stops44h 51m

$1,620

Washington, D.C.Sydney

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Tue 10/3

09:59-07:25

1 stop30h 26m

Sydney Kingsford Smith

Tue 17/3

14:00-20:00

2 stops45h 00m

$1,621

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sun 3/5

12:39-07:20

1 stop28h 41m

Sydney Kingsford Smith

Sun 17/5

09:20-21:25

1 stop26h 05m

$1,628

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Wed 25/2

15:21-06:55

1 stop23h 34m

Sydney Kingsford Smith

Wed 18/3

06:30-18:13

2 stops26h 43m

$1,799

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Fri 27/2

15:21-06:55

1 stop23h 34m

Sydney Kingsford Smith

Thu 5/3

14:55-14:30

2 stops39h 35m

$1,802

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. 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. and Sydney?

What is the cheapest month to fly to Sydney?

The month of June is, on average, the cheapest month to fly to Sydney from Washington, D.C., with most prices found around $1,410. If you aren’t able to travel to Sydney during the month of June, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $1,477.

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. when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $2,124 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. for as low as $933 on momondo.

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

You could potentially save up to 47% on your flight if you consider stops on a Washington, D.C. to Sydney flight.

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

As of February 2026, prices for Washington, D.C. to Sydney flights are approximately 63% cheaper when compared to flights at the same time last year.

When to book flights from Washington, D.C. to Sydney

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

Cheap Washington, D.C. to Sydney (WAS to SYD) flight deals and tips

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

Fastest flight time

21h 33m

Direct flights

None
The fastest flight from Washington, D.C. to Sydney takes 21h 33m
There are no direct flights from Washington, D.C. to Sydney. There are no popular flight routes from Washington, D.C. to Sydney.
Search flight deals

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

    Washington, D.C. and Sydney Kingsford Smith are 15700.1 km apart from one another. By plane, this route typically takes 21h 33m.

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

    Prices for flights from Washington, D.C. to Sydney Kingsford Smith Airport refresh daily.

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

  • How old do you have to be to fly from Washington, D.C. 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. 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 licence, 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. to Sydney?

Best airlines flying from Washington, D.C. to Sydney

Compare and see reviews for airlines that fly from Washington, D.C. to Sydney with momondo
Airline
Rating
Free cancellation
Price
United AirlinesPriceFrom $1,848Free cancellationRating
7.4
9,257 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?

Flights from Washington, D.C. to Sydney with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Sydney from Washington, D.C..

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

Of course. momondo tracks the price of Washington, D.C. to Sydney flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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