Cheap flights from Washington, D.C. to Sydney from $731

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 17/11. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SYD
3 Sep — 10 Sep1
1 adult

Cheapflights Tip: The best prices from Washington, D.C. to Sydney Kingsford Smith are usually found in August or April, booked 4 days in advance, depart on a Monday or Tuesday and return on a Wednesday

Cheap 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 29 August 2025.

Round-trip from

$1,657

One-way from

$731

Popular in

December

Cheapest in

August

Average price

$1,330
20/9-3/10
  • 20/9-3/10
  • 4 total stops
  • 59h 34m total
  • Washington, D.C. to Sydney
17/11
  • 17/11
  • 2 total stops
  • 56h 55m total
  • Washington, D.C. to Sydney
Highest demand for flights based on searches. 23% potential increase in price ($856 potential increase over avg. return price).
Cheapest flight prices on average. 4% potential price decrease ($131 potential savings vs. average return price).
Average for round-trip flights in August 2025

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

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 29 August 2025.

Sat 20/907:00IAD - SYD
2 stops34h 05mMultiple Airlines
Fri 3/1012:10SYD - IAD
2 stops25h 29mMultiple Airlines
Deal found 26/8$1,657
Sun 30/1115:07BWI - SYD
2 stops28h 28mQantas Airways
Wed 10/1214:05SYD - BWI
1 stop23h 12mQantas Airways
Deal found 28/8$1,701
Mon 24/1106:01BWI - SYD
2 stops35h 49mMultiple Airlines
Sun 7/1214:00SYD - BWI
3 stops33h 23mMultiple Airlines
Deal found 28/8$1,709
Mon 3/1105:35BWI - SYD
2 stops35h 10mMultiple Airlines
Sun 16/1111:45SYD - BWI
3 stops35h 38mMultiple Airlines
Deal found 28/8$1,712
Wed 10/1215:20BWI - SYD
1 stop23h 35mQantas Airways
Mon 22/1206:05SYD - BWI
2 stops24h 16mQantas Airways
Deal found 27/8$1,714
Fri 31/1013:27BWI - SYD
1 stop26h 28mQantas Airways
Sat 15/1107:05SYD - BWI
2 stops23h 22mQantas Airways
Deal found 27/8$1,715
Fri 7/1115:23BWI - SYD
1 stop23h 32mQantas Airways
Thu 20/1107:20SYD - BWI
2 stops26h 57mQantas Airways
Deal found 27/8$1,723
Sun 31/806:10IAD - SYD
2 stops34h 45mMultiple Airlines
Sun 14/912:10SYD - IAD
2 stops26h 05mMultiple Airlines
Deal found 26/8$1,724
Tue 11/1115:23BWI - SYD
2 stops39h 02mQantas Airways
Sun 23/1114:05SYD - BWI
1 stop20h 12mQantas Airways
Deal found 27/8$1,740
Mon 3/1106:00IAD - SYD
2 stops56h 55mMultiple Airlines
Sun 16/1114:05SYD - IAD
2 stops26h 06mMultiple Airlines
Deal found 27/8$1,743
Mon 13/1007:50BWI - SYD
3 stops33h 55mMultiple Airlines
Sun 26/1013:55SYD - BWI
2 stops31h 40mMultiple Airlines
Deal found 28/8$1,744
Mon 20/1005:35BWI - SYD
2 stops36h 25mMultiple Airlines
Sun 2/1117:45SYD - BWI
1 stop28h 50mMultiple Airlines
Deal found 27/8$1,747

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 29 August 2025.
Use the filters below to find and compare flights from Washington, D.C. to Sydney that are best for you.

Fly from

Washington, D.C.

Fly to

Sydney

Route

Depart

Return

Price

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Mon 9/2

15:22-12:15

2 stops28h 53m

Sydney Kingsford Smith

Tue 3/3

14:05-18:11

1 stop20h 06m

$1,701

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Mon 9/2

15:22-12:15

2 stops28h 53m

Sydney Kingsford Smith

Sun 22/2

14:05-18:11

1 stop20h 06m

$1,701

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Mon 2/2

15:22-10:55

2 stops27h 33m

Sydney Kingsford Smith

Sun 15/2

14:05-18:11

1 stop20h 06m

$1,701

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Fri 31/10

13:27-06:55

1 stop26h 28m

Sydney Kingsford Smith

Sat 15/11

07:05-14:27

2 stops23h 22m

$1,715

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Mon 16/2

15:21-06:55

1 stop23h 34m

Sydney Kingsford Smith

Sun 1/3

06:05-13:58

2 stops23h 53m

$1,715

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Fri 31/10

13:27-06:55

1 stop26h 28m

Sydney Kingsford Smith

Tue 11/11

06:05-14:30

2 stops24h 25m

$1,715

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Fri 7/11

15:23-06:55

1 stop23h 32m

Sydney Kingsford Smith

Thu 20/11

07:20-18:17

2 stops26h 57m

$1,723

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Tue 11/11

15:23-22:25

2 stops39h 02m

Sydney Kingsford Smith

Sun 23/11

14:05-18:17

1 stop20h 12m

$1,740

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Sun 1/2

15:22-20:05

2 stops36h 43m

Sydney Kingsford Smith

Wed 11/2

14:05-22:23

1 stop24h 18m

$1,750

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Sun 9/11

20:26-09:50

2 stops45h 24m

Sydney Kingsford Smith

Mon 17/11

17:45-19:19

1 stop41h 34m

$1,764

Flights are sorted by cheapest return flights first.

Deals found on 27/8

Showing 1-10 of 55 results
1
2
3
...
6

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 22 August 2025.

Booking 4 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, May is the cheapest month in which you can book a flight from Washington, D.C. to Sydney (average of $129). Flying from Washington, D.C. to Sydney in October is currently the most expensive (average of $171). 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 is the cheapest time of day to fly from WAS to SYD?

Find hourly flight availability from Washington, D.C. to Sydney. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 29 August 2025.

It’s typically best to fly out from Washington, D.C. to Sydney in the morning. Doing so could potentially save you 28% on the flight price compared to flying in the evening, which is usually more expensive.

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.

Dallas (DFW) is the most affordable one-stop option, with an average return flight price of $1,331.

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: 21h 54m.

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 Dallas (DFW) offer the fastest connection on this route, with an average stopover time of 1h 19m.

Reviews of airlines servicing Sydney

Get insights into the airlines that provide service to Sydney. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sydney. Reviews last updated 29 August 2025.
Read reviews from past customers who have flown with American Airlines from Washington, D.C. to Sydney. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Comfort

7.2

Boarding

7.5

Crew

8.0

Food

6.5

Entertainment

6.9

Overall

7.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

BNA - ORD

My flight was 8 hours delayed, so I missed my connecting flight to Dublin. I understand it’s not the staff’s fault but the lack of sympathy and apology was appalling. I had been sat in the airport since 4am until 3pm and they did not seem understanding. Not good. Need better customer service.

Comfort

7.2

Boarding

7.5

Crew

8.0

Food

6.5

Entertainment

6.9

Overall

7.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

BNA - ORD

My flight was 8 hours delayed, so I missed my connecting flight to Dublin. I understand it’s not the staff’s fault but the lack of sympathy and apology was appalling. I had been sat in the airport since 4am until 3pm and they did not seem understanding. Not good. Need better customer service.

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 Qantas Airways and Fiji Airways fly from Washington, D.C. to Sydney in about 26h 28m. The time it takes to get you to your destination can typically vary by up to 2h 25m. The distance between Washington, D.C. and Sydney is about 15704 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 $2,244.

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

  • 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, May is the cheapest month in which you can book a flight from Washington, D.C. to Sydney (average of $129). Flying from Washington, D.C. to Sydney in October is currently the most expensive (average of $171). 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
Katoomba
Penrith
Coogee
Terrigal
Cronulla
Manly
Lithgow
Randwick
Bondi Beach
Leura

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Washington, D.C. to Sydney

See prices for flight routes from nearby airports that may be better suited for you.

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 29 August 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,776Average$2,557FlexibilityNo 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.