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Cheap flights from Washington, D.C. to Sydney from $661

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 15/4. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SYD
10 Apr — 17 Apr1
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 11 March 2026.

Thu 7/512:47
BWI
-
SYD
2 stops29h 58m
Air New Zealand
Sun 17/509:55
SYD
-
BWI
2 stops33h 19m
Air New Zealand
Deal found 10/3$1,682
Sun 15/315:21
BWI
-
SYD
2 stops27h 59m
Qantas Airways
Thu 19/313:05
SYD
-
BWI
1 stop20h 08m
Qantas Airways
Deal found 6/3$1,694
Wed 22/417:37
IAD
-
SYD
2 stops27h 03m
Air New Zealand
Wed 29/411:55
SYD
-
IAD
2 stops24h 49m
Air New Zealand
Deal found 8/3$1,695
Wed 22/414:33
DCA
-
SYD
2 stops28h 12m
Air New Zealand
Wed 29/411:55
SYD
-
DCA
2 stops24h 20m
Air New Zealand
Deal found 8/3$1,695
Tue 28/406:23
BWI
-
SYD
2 stops36h 22m
Air New Zealand
Tue 12/511:55
SYD
-
BWI
2 stops43h 43m
Air New Zealand
Deal found 10/3$1,702
Mon 27/417:37
IAD
-
SYD
2 stops25h 08m
Air New Zealand
Mon 11/511:55
SYD
-
IAD
2 stops24h 54m
Air New Zealand
Deal found 8/3$1,705
Mon 27/417:50
BWI
-
SYD
2 stops26h 50m
Air New Zealand
Mon 11/509:55
SYD
-
BWI
2 stops33h 19m
Air New Zealand
Deal found 8/3$1,728
Mon 27/416:34
DCA
-
SYD
2 stops26h 11m
Air New Zealand
Mon 11/509:55
SYD
-
DCA
2 stops28h 03m
Air New Zealand
Deal found 8/3$1,728
Mon 4/517:38
IAD
-
SYD
2 stops25h 07m
Air New Zealand
Mon 18/509:55
SYD
-
IAD
2 stops29h 29m
Air New Zealand
Deal found 9/3$1,730
Fri 1/512:47
BWI
-
SYD
2 stops31h 53m
Air New Zealand
Thu 14/509:55
SYD
-
BWI
2 stops26h 49m
Air New Zealand
Deal found 11/3$1,730
Mon 4/514:35
DCA
-
SYD
2 stops28h 10m
Air New Zealand
Wed 13/509:55
SYD
-
DCA
2 stops26h 20m
Air New Zealand
Deal found 8/3$1,730
Tue 16/617:55
IAD
-
SYD
2 stops26h 45m
Air New Zealand
Tue 21/709:55
SYD
-
IAD
2 stops29h 00m
Air New Zealand
Deal found 8/3$1,731

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 11 March 2026.

Round-trip from

$1,682

One-way from

$661

Popular in

December

Cheapest in

August

Average price

$2,192
Air New Zealand
  • Air New Zealand
  • 7/5-17/5
  • 4 total stops
  • 63h 17m total
  • Washington, D.C. to Sydney
Search Deals
15/4
  • 15/4
  • 3 total stops
  • 39h 50m total
  • Washington, D.C. to Sydney
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($132 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($57 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 11 March 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

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Mon 20/4

08:30-10:40

2 stops36h 10m

Sydney Kingsford Smith

Mon 27/4

09:55-23:59

2 stops28h 04m

$1,730

Washington, D.C.Sydney

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Mon 20/4

13:00-08:45

3 stops29h 45m

Sydney Kingsford Smith

Wed 29/4

09:55-22:15

2 stops26h 20m

$1,930

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Sat 18/4

18:28-07:00

1 stop22h 32m

Sydney Kingsford Smith

Sat 25/4

09:30-17:08

1 stop21h 38m

$1,972

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sat 15/8

18:35-06:55

1 stop22h 20m

Sydney Kingsford Smith

Mon 31/8

11:55-22:36

2 stops24h 41m

$1,991

Washington, D.C.Sydney

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Tue 28/7

18:59-18:50

2 stops33h 51m

Sydney Kingsford Smith

Sun 23/8

20:45-20:00

2 stops37h 15m

$2,026

Washington, D.C.Sydney

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Fri 21/8

12:40-10:40

3 stops32h 00m

Sydney Kingsford Smith

Fri 28/8

09:55-22:08

2 stops26h 13m

$2,067

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Wed 26/8

17:25-18:50

3 stops35h 25m

Sydney Kingsford Smith

Tue 8/9

20:45-16:26

2 stops33h 41m

$2,082

Washington, D.C.Sydney

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Sun 12/4

08:30-08:45

2 stops34h 15m

Sydney Kingsford Smith

Wed 22/4

09:55-22:15

2 stops26h 20m

$2,192

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Fri 1/5

19:16-18:50

2 stops33h 34m

Sydney Kingsford Smith

Thu 14/5

20:45-18:35

3 stops35h 50m

$2,217

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sun 9/8

17:48-07:00

1 stop23h 12m

Sydney Kingsford Smith

Mon 17/8

09:30-16:20

1 stop20h 50m

$2,247

Flights are sorted by cheapest return flights first.

Deals found on 10/3

Showing 1-10 of 58 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?

Use this chart to determine the optimal time to book a return flight from Washington, D.C. to Sydney. Price data was last updated on 6 March 2026.

Booking 15 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 $184). Flying from Washington, D.C. to Sydney in March is currently the most expensive (average of $1,195). 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.

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 $2,092.

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 Dallas (DFW) have the shortest average one-way travel time for one-stop routes: 22h 56m.

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 Air New Zealand and United Airlines fly from Washington, D.C. to Sydney in about 22h 32m. The time it takes to get you to your destination can typically vary by up to 13h 38m. 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 $1,812. United Airlines is 10% 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, Washington, D.C. Reagan-National - Sydney Kingsford Smith and Baltimore/Washington - 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 $184). Flying from Washington, D.C. to Sydney in March is currently the most expensive (average of $1,195). 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
Manly
Katoomba
Terrigal
Lithgow
Bondi Beach
Coogee
Cronulla
Leura
Randwick

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 11 March 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,812Average$2,422FlexibilityNo 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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