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Cheap flights from Washington, D.C. to Sydney from $725

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 25/8. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SYD
3 Jun — 10 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Washington, D.C. to Sydney

Enter your travel dates to find the best prices.

Cheapest flights from Washington, D.C. to Sydney
Explore the most affordable flight options available from Washington, D.C. to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 May 2026.

Sun 10/511:50
BWI
-
SYD
2 stops29h 00m
Delta
Tue 19/509:15
SYD
-
BWI
2 stops28h 31m
Delta
Deal found 1/5$1,823
Sat 13/617:32
BWI
-
SYD
2 stops47h 18m
Delta
Mon 3/809:15
SYD
-
BWI
2 stops27h 58m
Delta
Deal found 30/4$1,848
Sun 10/518:20
BWI
-
SYD
1 stop22h 35m
United Airlines
Sun 24/509:30
SYD
-
BWI
1 stop35h 44m
United Airlines
Deal found 4/5$1,850
Sun 14/607:00
BWI
-
SYD
2 stops33h 55m
Lufthansa
Sun 21/609:30
SYD
-
BWI
1 stop35h 44m
Lufthansa
Deal found 30/4$1,856
Sun 26/719:23
BWI
-
SYD
1 stop21h 37m
United Airlines
Sun 16/810:20
SYD
-
BWI
1 stop21h 30m
United Airlines
Deal found 1/5$1,857
Sun 26/715:03
BWI
-
SYD
2 stops25h 57m
United Airlines
Sun 23/810:20
SYD
-
BWI
1 stop21h 30m
United Airlines
Deal found 29/4$1,859
Sun 10/518:35
BWI
-
SYD
1 stop22h 25m
United Airlines
Tue 19/509:30
SYD
-
BWI
2 stops25h 32m
United Airlines
Deal found 29/4$1,866
Tue 4/807:00
BWI
-
SYD
1 stop34h 00m
United Airlines
Sun 27/909:30
SYD
-
BWI
1 stop21h 05m
United Airlines
Deal found 1/5$1,875
Sun 14/615:03
BWI
-
SYD
2 stops25h 57m
United Airlines
Sun 21/609:30
SYD
-
BWI
1 stop35h 54m
United Airlines
Deal found 29/4$1,877
Fri 23/1009:30
DCA
-
SYD
1 stop31h 00m
Multiple Airlines
Fri 13/1114:55
SYD
-
DCA
2 stops45h 05m
Multiple Airlines
Deal found 30/4$1,907
Sat 24/1009:30
DCA
-
SYD
1 stop31h 00m
Multiple Airlines
Fri 6/1114:00
SYD
-
DCA
2 stops46h 00m
Multiple Airlines
Deal found 29/4$1,918
Tue 25/809:30
DCA
-
SYD
1 stop32h 00m
Multiple Airlines
Tue 8/913:15
SYD
-
DCA
2 stops44h 45m
Multiple Airlines
Deal found 1/5$1,935

Find flight deals from Washington, D.C. to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) to Sydney (SYD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 4 May 2026.

Round-trip from

$1,823

One-way from

$725

Popular in

December

Cheapest in

February

Average price

$2,075
Delta
  • Delta
  • 31/5-7/6
  • 4 total stops
  • 53h 01m total
  • Washington, D.C. to Sydney
Search Deals
25/8
  • 25/8
  • 3 total stops
  • 44h 59m total
  • Washington, D.C. to Sydney
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($106 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($58 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights 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, Cheapflights users made 647,157 searches. Data last updated 4 May 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

Cheapest return flight

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Sun 9/8

15:03-07:00

2 stops25h 57m

Sydney Kingsford Smith

Sun 23/8

09:30-16:31

1 stop21h 01m

$1,857

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Sun 26/7

15:03-07:00

2 stops25h 57m

Sydney Kingsford Smith

Sun 16/8

09:30-16:31

1 stop21h 01m

$1,859

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Sun 26/7

15:03-07:00

2 stops25h 57m

Sydney Kingsford Smith

Sun 23/8

09:30-19:40

2 stops24h 10m

$1,864

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Mon 25/5

15:00-07:00

2 stops26h 00m

Sydney Kingsford Smith

Mon 1/6

09:30-23:30

2 stops28h 00m

$1,866

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Thu 30/7

14:08-06:50

2 stops26h 42m

Sydney Kingsford Smith

Wed 12/8

09:15-19:25

2 stops24h 10m

$1,893

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Fri 31/7

11:52-06:50

2 stops28h 58m

Sydney Kingsford Smith

Sun 16/8

09:15-06:20

2 stops35h 05m

$1,893

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Wed 3/6

18:59-06:55

1 stop21h 56m

Sydney Kingsford Smith

Thu 18/6

10:20-17:57

1 stop21h 37m

$1,928

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Mon 3/8

15:03-07:00

2 stops25h 57m

Sydney Kingsford Smith

Fri 14/8

10:20-17:50

1 stop21h 30m

$1,928

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Tue 21/7

07:00-07:00

1 stop34h 00m

Sydney Kingsford Smith

Fri 7/8

09:30-17:50

1 stop22h 20m

$1,945

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sun 31/5

17:35-18:50

2 stops35h 15m

Sydney Kingsford Smith

Fri 5/6

20:45-16:38

2 stops33h 53m

$2,248

Flights are sorted by cheapest return flights first.

Deals found on 2/5

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Washington, D.C. to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Washington, D.C. with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. to Sydney

How far ahead should I book a flight from Washington, D.C. to Sydney?

Booking 70 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. to Sydney. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Washington, D.C. to Sydney?

Currently, August is the cheapest month in which you can book a flight from Washington, D.C. to Sydney (average of $108). Flying from Washington, D.C. to Sydney in January is currently the most expensive (average of $523). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost for a return flight from Washington, D.C. to Sydney?

What’s the top stopover airport for flights from Washington, D.C. to Sydney?

Share of one-stop return flights from Washington, D.C. to Sydney chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Los Angeles (LAX) – chosen by Cheapflights users on 50% of one-stop itineraries from Washington, D.C. to Sydney on Cheapflights.

What’s the cheapest stopover airport for flights from Washington, D.C. to Sydney?

Average return fare for one-stop flights from Washington, D.C. to Sydney, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Vancouver (YVR) is the most affordable one-stop option, with an average return flight price of $2,077.

What’s the fastest stopover option from Washington, D.C. to Sydney?

Shortest average travel time for one-stop one-way flights from Washington, D.C. to Sydney, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Los Angeles (LAX) have the shortest average one-way travel time for one-stop routes: 22h 53m.

Which airport typically offers the quickest stopover for flights from Washington, D.C. to Sydney?

Average stopover duration for one-stop one-way flights from Washington, D.C. to Sydney, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via San Francisco (SFO) offer the fastest connection on this route, with an average stopover time of 1h 33m.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Sydney from Washington, D.C.?

    If you book a flight to Sydney from Washington, D.C., you will be flying to Kingsford Smith, which is the city’s only airport. Sydney Kingsford Smith (SYD) is located 7.5 km from the centre of Sydney. There are 0 flights from Washington, D.C. to Kingsford Smith per day from 1 airline.

  • How long is the flight from Washington, D.C. to Sydney?

    Airlines like United Airlines and Alaska Airlines fly from Washington, D.C. to Sydney in about 25h 57m. The time it takes to get you to your destination can typically vary by up to 8h 33m. The distance between Washington, D.C. and Sydney is about 15741 km. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Washington, D.C. to Sydney round-trip?

    Flying on United Airlines is currently your cheapest option to Sydney, with prices starting at $1,799. United Airlines is 12% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the most popular routes from Washington, D.C. to Sydney?

    The most popular flight routes from Washington, D.C. to Sydney are Washington, D.C. Dulles Intl - Sydney Kingsford Smith, Baltimore/Washington - Sydney Kingsford Smith and Washington, D.C. Reagan-National - Sydney Kingsford Smith.

  • Can I find deals for flights from Washington, D.C. to Sydney that include hotel bookings?

    Yes. In addition to deals on Washington, D.C. to Sydney flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Washington, D.C. to Sydney?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Sydney.

  • Can I find deals for business class flights from Washington, D.C. to Sydney?

    Yes. Cheapflights offers flight deals from Washington, D.C. to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Washington, D.C. to Sydney?

    Currently, August is the cheapest month in which you can book a flight from Washington, D.C. to Sydney (average of $108). Flying from Washington, D.C. to Sydney in January is currently the most expensive (average of $523). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Sydney?

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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Washington, D.C. to Sydney

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Sydney flights
Reagan-National to Sydney flights
Dulles Intl to Coolangatta flights

Top airline flying from Washington, D.C. to Sydney

Discover the top airline that operate flights from Washington, D.C. to Sydney. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 647,157 searches. Data last updated 4 May 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,799Average$2,649FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Washington, D.C. to Sydney?

When you search for this flight from Washington, D.C. to Sydney, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Washington, D.C. to Sydney?

Cheapflights helps you find that perfect flight to Sydney from Washington, D.C. by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Washington, D.C. to Sydney with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Washington, D.C. to Sydney flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Washington, D.C. to Sydney become cheaper?

Yes! Start tracking prices for Washington, D.C. to Sydney flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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