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Cheap flights from Washington, D.C. to Sydney from $495

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 4/14. 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. to Sydney

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
9:55 am - 7:20 am
IAD
-
SYD
31h 25m
2 stops
Air Canada Logo
9:20 am - 8:29 pm
SYD
-
IAD
25h 09m
2 stops
$1,129Air Canada
Tue, Apr 21 - Tue, May 12
Air Canada Logo
9:45 am - 7:20 am
IAD
-
SYD
31h 35m
2 stops
Air Canada Logo
9:20 am - 8:29 pm
SYD
-
IAD
25h 09m
2 stops
$1,130Air Canada
Tue, May 12 - Thu, May 28
Air Canada Logo
9:45 am - 7:20 am
IAD
-
SYD
31h 35m
2 stops
Air Canada Logo
9:20 am - 6:25 am
SYD
-
IAD
35h 05m
1 stop
$1,132Air Canada
Tue, May 12 - Thu, May 28
Air Canada Logo
9:00 am - 8:35 am
IAD
-
SYD
32h 35m
2 stops
Air Canada Logo
9:20 am - 3:39 pm
SYD
-
IAD
44h 19m
2 stops
$1,135Air Canada
Tue, Mar 24 - Tue, Apr 7
Air Canada Logo
9:55 am - 7:20 am
IAD
-
SYD
31h 25m
3 stops
Air Canada Logo
9:20 am - 8:29 pm
SYD
-
IAD
25h 09m
2 stops
$1,137Air Canada
Tue, Apr 21 - Thu, Apr 30
Multiple Airlines Logo
9:59 am - 7:25 am
DCA
-
SYD
29h 26m
1 stop
Multiple Airlines Logo
2:00 pm - 8:05 pm
SYD
-
DCA
45h 05m
2 stops
$1,192Multiple Airlines
Thu, Mar 5 - Tue, Mar 10
Qantas Airways Logo
9:59 am - 9:20 am
DCA
-
SYD
31h 21m
2 stops
Qantas Airways Logo
2:05 pm - 8:57 pm
SYD
-
DCA
22h 52m
1 stop
$1,240Qantas Airways
Tue, Feb 3 - Wed, Mar 4
Qantas Airways Logo
9:59 am - 9:20 am
DCA
-
SYD
31h 21m
2 stops
Qantas Airways Logo
1:05 pm - 7:46 pm
SYD
-
DCA
21h 41m
1 stop
$1,241Qantas Airways
Tue, Feb 24 - Tue, Mar 10
Qantas Airways Logo
3:41 pm - 6:55 am
BWI
-
SYD
23h 14m
1 stop
Qantas Airways Logo
6:05 am - 2:30 pm
SYD
-
BWI
24h 25m
2 stops
$1,260Qantas Airways
Tue, Feb 3 - Wed, Mar 4
Qantas Airways Logo
3:21 pm - 6:55 am
BWI
-
SYD
23h 34m
1 stop
Qantas Airways Logo
6:30 am - 10:59 pm
SYD
-
BWI
32h 29m
2 stops
$1,261Qantas Airways
Sun, Feb 15 - Tue, Feb 24

Air Canada flights from Washington, D.C. to Sydney

Our best Air Canada deals on Washington, D.C. to Sydney flight tickets
Air Canada
Apr 21
IAD9:55 amWashington, D.C. Dulles Intl
31h 25m
2 stops
SYD7:20 amSydney Kingsford Smith
May 12
SYD9:20 amSydney Kingsford Smith
25h 09m
2 stops
IAD8:29 pmWashington, D.C. Dulles Intl
$1,129
Air Canada
May 12
IAD9:45 amWashington, D.C. Dulles Intl
31h 35m
2 stops
SYD7:20 amSydney Kingsford Smith
May 28
SYD9:20 amSydney Kingsford Smith
25h 09m
2 stops
IAD8:29 pmWashington, D.C. Dulles Intl
$1,130
Air Canada
May 12
IAD9:45 amWashington, D.C. Dulles Intl
31h 35m
2 stops
SYD7:20 amSydney Kingsford Smith
May 28
SYD9:20 amSydney Kingsford Smith
35h 05m
1 stop
IAD6:25 amWashington, D.C. Dulles Intl
$1,132

Turkish Airlines flights from Washington, D.C. to Sydney

Our best Turkish Airlines deals on Washington, D.C. to Sydney flight tickets
Turkish Airlines
Feb 26
IAD1:30 pmWashington, D.C. Dulles Intl
37h 50m
2 stops
SYD7:20 pmSydney Kingsford Smith
Mar 6
SYD9:15 pmSydney Kingsford Smith
38h 05m
2 stops
IAD7:20 pmWashington, D.C. Dulles Intl
$1,306
Turkish Airlines
Feb 3
IAD9:15 pmWashington, D.C. Dulles Intl
54h 05m
2 stops
SYD7:20 pmSydney Kingsford Smith
Mar 4
SYD9:15 pmSydney Kingsford Smith
38h 05m
2 stops
IAD7:20 pmWashington, D.C. Dulles Intl
$1,307
Turkish Airlines
Feb 1
IAD9:15 pmWashington, D.C. Dulles Intl
54h 05m
2 stops
SYD7:20 pmSydney Kingsford Smith
Feb 14
SYD9:15 pmSydney Kingsford Smith
38h 05m
2 stops
IAD7:20 pmWashington, D.C. Dulles Intl
$1,388

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated January 23, 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

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 4/21

9:55 am-7:20 am

2 stops31h 25m

Sydney Kingsford Smith

Tue 5/12

9:20 am-8:29 pm

2 stops25h 09m

$1,129

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 5/12

9:45 am-7:20 am

2 stops31h 35m

Sydney Kingsford Smith

Thu 5/28

9:20 am-8:29 pm

2 stops25h 09m

$1,130

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 5/12

9:45 am-7:20 am

2 stops31h 35m

Sydney Kingsford Smith

Thu 5/28

9:20 am-6:25 am

1 stop35h 05m

$1,132

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 3/24

9:00 am-8:35 am

2 stops32h 35m

Sydney Kingsford Smith

Tue 4/7

9:20 am-3:39 pm

2 stops44h 19m

$1,135

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 4/21

9:55 am-7:20 am

3 stops31h 25m

Sydney Kingsford Smith

Thu 4/30

9:20 am-8:29 pm

2 stops25h 09m

$1,137

Washington, D.C.Sydney

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Thu 3/5

9:59 am-7:25 am

1 stop29h 26m

Sydney Kingsford Smith

Tue 3/10

2:00 pm-8:05 pm

2 stops45h 05m

$1,192

Washington, D.C.Sydney

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Tue 2/3

9:59 am-9:20 am

2 stops31h 21m

Sydney Kingsford Smith

Wed 3/4

2:05 pm-8:57 pm

1 stop22h 52m

$1,240

Washington, D.C.Sydney

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Tue 2/24

9:59 am-9:20 am

2 stops31h 21m

Sydney Kingsford Smith

Tue 3/10

1:05 pm-7:46 pm

1 stop21h 41m

$1,241

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Tue 2/3

3:41 pm-6:55 am

1 stop23h 14m

Sydney Kingsford Smith

Wed 3/4

6:05 am-2:30 pm

2 stops24h 25m

$1,260

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Sun 2/15

3:21 pm-6:55 am

1 stop23h 34m

Sydney Kingsford Smith

Tue 2/24

6:30 am-10:59 pm

2 stops32h 29m

$1,261

Flights are sorted by cheapest round-trip 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?

In general, April is the cheapest month to fly from Washington, D.C. to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $864. If you are unable to visit Sydney during the month of April, then departing from Washington, D.C. during the month August is also very affordable. Most momondo users find prices during this month for around $870.

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 $1,353 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. for as low as $655 on momondo.

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

You could potentially save up to 32% 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 January 2026, prices for Washington, D.C. to Sydney flights are approximately 52% more expensive 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 round-trip 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

22h 20m

Direct flights

None
The fastest flight from Washington, D.C. to Sydney takes 22h 20m
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?

    A flight from Washington, D.C. to Sydney Kingsford Smith will travel around 9755.6 mi. 22h 20m is a normal flight duration for this route.

  • 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 are updated 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 layovers. 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 required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • 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
DeltaPriceFrom $276Free CancellationRating
7.9
8,100 reviews
Search Delta flights
United AirlinesPriceFrom $346Free CancellationRating
7.4
9,194 reviews
Search United Airlines flights
Qantas AirwaysPriceFrom $787Free CancellationRating
7.5
974 reviews
Search Qantas Airways flights
American AirlinesPriceFrom $825Free CancellationRating
7.2
11,183 reviews
Search American Airlines flights
Air CanadaPriceFrom $854Free CancellationRating
7.1
10,652 reviews
Search Air Canada flights
Air New ZealandPriceFrom $1,289Free CancellationRating
8.0
573 reviews
Search Air New Zealand 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
Lithgow
Leura
Penrith
Cronulla
Charlestown
Terrigal
Swansea

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington, D.C. to Sydney. momondo saves you time and could save you money on your trip.

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

Yes. momondo allows you to filter the results for Washington, D.C. to Sydney flights to just show those with flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to Sydney from Washington, D.C.. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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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