Sydney

$474+ Cheap flights from Washington, D.C. (WAS) to Sydney (SYD)

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 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SYD
Aug 22 — Aug 291
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington, D.C. to Sydney with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 Tuesday or Thursday 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 August 17, 2025.

Round-trip from

$1,021
(Trip.com)

One-way from

$474
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$865
From Washington, D.C. (WAS) to Sydney Kingsford Smith
One-way flight from Washington, D.C. (WAS) to Sydney Kingsford Smith
Highest demand for flights based on searches. 23% potential increase in price ($365 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($55 potential savings vs. average RT 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 August 17, 2025.

This Trip.com deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/257:15 amIAD - SYD
2 stops34h 45mMultiple Airlines
Fri 11/72:20 pmSYD - IAD
2 stops25h 51mMultiple Airlines
Deal found 8/17$1,049
This Trip.com deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/146:10 amIAD - SYD
2 stops34h 55mMultiple Airlines
Sun 9/2112:10 pmSYD - IAD
2 stops26h 05mMultiple Airlines
Deal found 8/15$1,067
This Mytrip deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/149:57 amBWI - SYD
3 stops35h 48mMultiple Airlines
Sun 9/211:15 pmSYD - BWI
2 stops31h 46mMultiple Airlines
Deal found 8/15$1,067
This Trip.com deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/38:00 amIAD - SYD
2 stops30h 55mMultiple Airlines
Fri 12/122:20 pmSYD - IAD
2 stops25h 59mMultiple Airlines
Deal found 8/16$1,083
This FlightHub deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/173:23 pmBWI - SYD
1 stop23h 32mQantas Airways
Wed 11/269:55 pmSYD - BWI
2 stops32h 18mQantas Airways
Deal found 8/17$1,094
This CheapTickets deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapTickets is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/305:45 amBWI - SYD
1 stop35h 20mMultiple Airlines
Tue 10/76:45 pmSYD - BWI
2 stops30h 43mMultiple Airlines
Deal found 8/16$1,095
This oojo deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/113:23 pmBWI - SYD
2 stops38h 32mQantas Airways
Sun 11/232:20 pmSYD - BWI
1 stop19h 57mQantas Airways
Deal found 8/17$1,109
This flugladen.de deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/176:10 amIAD - SYD
2 stops34h 45mMultiple Airlines
Sun 8/3112:10 pmSYD - IAD
2 stops26h 06mMultiple Airlines
Deal found 8/15$1,110
This Ovago deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/83:23 pmBWI - SYD
1 stop23h 32mQantas Airways
Sat 11/227:05 amSYD - BWI
2 stops23h 25mQantas Airways
Deal found 8/15$1,112
This Ovago deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/283:23 pmBWI - SYD
1 stop23h 32mQantas Airways
Sun 12/217:05 amSYD - BWI
2 stops23h 01mQantas Airways
Deal found 8/17$1,113
This Gurufare deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/303:23 pmBWI - SYD
1 stop23h 32mQantas Airways
Sun 12/217:05 amSYD - BWI
2 stops23h 01mQantas Airways
Deal found 8/16$1,114
This Mytrip deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/137:50 amBWI - SYD
3 stops33h 55mMultiple Airlines
Sun 10/261:55 pmSYD - BWI
2 stops31h 40mMultiple Airlines
Deal found 8/15$1,119

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated August 17, 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

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sat 10/25

7:15 am-9:00 am

2 stops34h 45m

Sydney Kingsford Smith

Fri 11/7

2:20 pm-12:11 am

2 stops25h 51m

$1,049

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sun 9/14

6:10 am-7:05 am

2 stops34h 55m

Sydney Kingsford Smith

Sun 9/21

12:10 pm-12:15 am

2 stops26h 05m

$1,067

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Sun 9/14

9:57 am-11:45 am

3 stops35h 48m

Sydney Kingsford Smith

Sun 9/21

1:15 pm-7:01 am

2 stops31h 46m

$1,067

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Tue 9/30

5:45 am-7:05 am

1 stop35h 20m

Sydney Kingsford Smith

Tue 10/7

6:45 pm-10:28 am

2 stops30h 43m

$1,095

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Tue 11/11

3:23 pm-9:55 pm

2 stops38h 32m

Sydney Kingsford Smith

Sun 11/23

2:20 pm-10:54 pm

1 stop24h 34m

$1,109

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Fri 10/31

1:27 pm-9:55 pm

2 stops41h 28m

Sydney Kingsford Smith

Sat 11/8

2:20 pm-11:02 pm

1 stop24h 42m

$1,109

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Sat 11/8

3:23 pm-6:55 am

1 stop23h 32m

Sydney Kingsford Smith

Sat 11/22

7:05 am-2:30 pm

2 stops23h 25m

$1,112

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Mon 10/13

7:50 am-8:45 am

3 stops33h 55m

Sydney Kingsford Smith

Sun 10/26

1:55 pm-6:35 am

2 stops31h 40m

$1,119

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Mon 10/20

7:50 am-8:45 am

3 stops33h 55m

Sydney Kingsford Smith

Sun 11/2

11:45 am-7:35 am

2 stops34h 50m

$1,119

Washington, D.C.Sydney

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Tue 2/10

5:11 pm-12:30 pm

2 stops27h 19m

Sydney Kingsford Smith

Thu 2/19

2:10 pm-8:57 pm

2 stops22h 47m

$1,159

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/16

Showing 1-10 of 54 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 round-trip 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 round-trip flight from Washington, D.C. to Sydney. Price data was last updated on August 8, 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, February is the cheapest month in which you can book a flight from Washington, D.C. to Sydney (average of $1,031). Flying from Washington, D.C. to Sydney in December is currently the most expensive (average of $1,619). 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 August 17, 2025.

It’s optimal to fly from Washington, D.C. to Sydney at noon. By choosing this option you can save up to 17% on the cost of your flight, compared to a flight in the evening.

What is the cheapest day to fly from Washington, D.C. to Sydney?

Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to Sydney. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Washington, D.C. to Sydney flight should consider departing on Monday mornings when fares are most often at their lowest. Thursday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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

Share of 1-stop round-trip flights from Washington, D.C. to Sydney chosen by Cheapflights users in the past 12 months, using the same layover each way.

Doha (DOH) – chosen by Cheapflights users on 50% of 1-stop itineraries from Washington, D.C. to Sydney on Cheapflights.

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

Average round-trip fare for 1-stop flights from Washington, D.C. to Sydney, chosen by Cheapflights users in the past 12 months, with the same layover each way.

San Francisco (SFO) is the most affordable 1-stop option, with an average round-trip price of $1,661.

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

Shortest average travel time for 1-stop one-way flights from Washington, D.C. to Sydney, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via San Francisco (SFO) have the shortest average one-way travel time for 1-stop routes: 22h 10m.

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

Average layover duration for 1-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 Doha (DOH) offer the fastest connection on this route, with an average layover time of 7h 55m.

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 August 17, 2025.
Peruse reviews from past customers who have flown with Delta, Qantas Airways, and United Airlines from Washington, D.C. to Sydney to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very good
8.0
Very good

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very good

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very good

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very good

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very good

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.?

    Sydney Kingsford Smith (SYD), located 4.6 mi from the city center, is the airport you fly into when you book flights from Washington, D.C. to Sydney. 7 airlines have flights to Kingsford Smith from Washington, D.C. on a regular basis. Booking flights from Washington, D.C. to Sydney Kingsford Smith should not be difficult; the airport handles an average of 0 inbound flights from Washington, D.C. per day.

  • What are the cheapest airlines flying from Washington, D.C. to Sydney round-trip?

    Currently priced at $346, United Airlines will fly you from Washington, D.C. to Sydney and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and Qantas Airways - these airlines can fly you to your destination from $609 and $815, respectively. United Airlines is 71% 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?

  • Where are the most common layover locations when flying from Washington, D.C. to Sydney?

  • What are some popular things to do or see while on a layover in Los Angeles?

    Hollywood Bowl, Hollywood Walk of Fame, and The Wiltern are the most popular attractions in Los Angeles if you're in need of something to do during your layover. Hollywood Bowl, Hollywood Walk of Fame and The Wiltern are located about 12.5 mi, 11.7 mi, and 10.0 mi, respectively from Los Angeles if you are interested in checking them out. Those landing in Los Angeles looking to spend some time exploring during their layover can rent a car for about $52 per day.

  • What are some popular points of interest to see during a layover in Dallas?

    If you're on a layover in Dallas and looking for things to do, consider visiting American Airlines Center, Dallas World Aquarium, or Dos Equis Pavilion. American Airlines Center, Dallas World Aquarium, and Dos Equis Pavilion can be accessed by traveling approximately 15.0 mi, 15.5 mi, and 18.3 mi, respectively from Dallas/Fort Worth. Travelers can rent a car at Dallas/Fort Worth for an average daily rate of $52 to make sightseeing during their layover a little easier.

  • Where are the least popular layover locations for Washington, D.C. to Sydney flights?

  • 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 vacation 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, February is the cheapest month in which you can book a flight from Washington, D.C. to Sydney (average of $1,031). Flying from Washington, D.C. to Sydney in December is currently the most expensive (average of $1,619). 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

Traveling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Wollongong
Parramatta
Manly
Coogee

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

Discover the top 7 airlines 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 2,558,603 searches. Data last updated August 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$276Average$1,174FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$346Average$1,627FlexibilityNo cancel feeOn-time69%
Qantas AirwaysCheapest$815Average$1,308FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$830Average$1,091FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$1,036Average$1,291FlexibilityNo cancel feeOn-time67%
Air New ZealandCheapest$1,294Average$1,786FlexibilityNo cancel feeOn-time78%
ANACheapest$1,370Average$1,587FlexibilityNo cancel feeOn-time80%

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.