Find flights
When to book
Airlines
FAQs

Cheap flights from Washington, D.C. to Sydney from $782

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 9/2. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SYD
15 Jan — 22 Jan1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Washington, D.C. to Sydney Kingsford Smith are usually found in August or April, booked 16 days in advance, depart on a Monday or Tuesday and return on a Wednesday

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 16 December 2025.

Wed 31/1215:27BWI - SYD
2 stops30h 58mQantas Airways
Sat 24/119:15SYD - BWI
2 stops35h 34mQantas Airways
Deal found 13/12$2,192
Wed 31/1209:59DCA - SYD
1 stop29h 26mMultiple Airlines
Sat 24/117:45SYD - DCA
2 stops35h 17mMultiple Airlines
Deal found 13/12$2,377
Sun 28/1206:30IAD - SYD
2 stops35h 05mMultiple Airlines
Sun 15/222:20SYD - IAD
2 stops40h 28mMultiple Airlines
Deal found 15/12$2,520
Wed 31/1209:45IAD - SYD
2 stops31h 50mAir Canada
Sat 24/111:20SYD - IAD
2 stops25h 34mAir Canada
Deal found 13/12$2,544
Thu 25/1218:35DCA - SYD
2 stops34h 15mCathay Pacific
Wed 21/122:20SYD - DCA
2 stops40h 35mCathay Pacific
Deal found 15/12$2,567
Sun 28/1209:00IAD - SYD
2 stops32h 35mAir Canada
Wed 11/211:20SYD - IAD
2 stops25h 34mAir Canada
Deal found 15/12$2,590
Sun 28/1209:00IAD - SYD
2 stops32h 35mAir Canada
Sun 15/211:20SYD - IAD
1 stop25h 09mAir Canada
Deal found 15/12$2,602
Sun 28/1218:00IAD - SYD
1 stop23h 05mUnited Airlines
Wed 11/212:10SYD - IAD
1 stop28h 47mUnited Airlines
Deal found 14/12$2,803
Sun 28/1206:00BWI - SYD
1 stop33h 00mUnited Airlines
Sun 15/211:50SYD - BWI
1 stop20h 20mUnited Airlines
Deal found 15/12$2,803
Mon 29/1222:06IAD - SYD
2 stops43h 29mAir Canada
Sat 17/111:20SYD - IAD
2 stops25h 34mAir Canada
Deal found 14/12$2,871
Thu 25/1208:00BWI - SYD
1 stop30h 20mUnited Airlines
Wed 21/114:00SYD - BWI
2 stops24h 25mUnited Airlines
Deal found 15/12$2,878
Thu 25/1212:45DCA - SYD
1 stop26h 15mUnited Airlines
Sun 18/112:10SYD - DCA
1 stop20h 42mUnited Airlines
Deal found 14/12$2,878

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 16 December 2025.

Round-trip from

$1,509

One-way from

$782

Popular in

December

Cheapest in

August

Average price

$2,502
Air Canada
  • Air Canada
  • 3/2-10/2
  • 4 total stops
  • 72h 05m total
  • Washington, D.C. to Sydney
Search Deals
9/2
  • 9/2
  • 3 total stops
  • 50h 32m total
  • Washington, D.C. to Sydney
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($509 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($102 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
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 16 December 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

Thu 5/2

15:41-06:55

1 stop23h 14m

Sydney Kingsford Smith

Thu 5/3

14:05-18:17

1 stop20h 12m

$1,803

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Sun 1/2

15:41-06:55

1 stop23h 14m

Sydney Kingsford Smith

Sun 15/2

14:05-18:17

1 stop20h 12m

$1,807

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Wed 14/1

18:15-09:15

1 stop23h 00m

Sydney Kingsford Smith

Sun 25/1

11:50-20:49

1 stop24h 59m

$1,825

Washington, D.C.Sydney

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Wed 11/2

16:38-08:30

1 stop23h 52m

Sydney Kingsford Smith

Wed 18/2

10:40-15:34

1 stop20h 54m

$1,825

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Mon 16/3

16:00-09:15

2 stops26h 15m

Sydney Kingsford Smith

Tue 7/4

10:20-16:25

1 stop20h 05m

$1,825

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 13/1

08:25-06:20

1 stop29h 55m

Sydney Kingsford Smith

Tue 10/2

11:20-16:22

1 stop21h 02m

$1,825

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Mon 20/4

12:39-07:00

1 stop28h 21m

Sydney Kingsford Smith

Mon 27/4

10:20-22:43

1 stop26h 23m

$1,825

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Wed 1/4

16:10-07:55

1 stop24h 45m

Sydney Kingsford Smith

Tue 28/4

10:20-19:07

1 stop22h 47m

$1,825

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Wed 28/1

18:45-09:05

1 stop22h 20m

Sydney Kingsford Smith

Wed 4/2

14:00-00:59

1 stop26h 59m

$1,825

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Mon 19/1

16:10-09:15

1 stop25h 05m

Sydney Kingsford Smith

Mon 26/1

11:20-16:22

1 stop21h 02m

$1,825

Flights are sorted by cheapest return flights first.

Deals found on 14/12

Showing 1-10 of 53 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 12 December 2025.

Booking 16 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 $206). Flying from Washington, D.C. to Sydney in May is currently the most expensive (average of $1,256). 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 16 December 2025.

It’s typically best to fly out from Washington, D.C. to Sydney in the morning. Doing so could potentially save you 52% on the flight price compared to flying at midday, which is usually more expensive.

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 42% 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 $1,307.

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 16 December 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.
American Airlines
7.2
Good
11,048 reviews
Check prices

Boarding

7.5

Food

6.5

Comfort

7.2

Overall

7.2

Entertainment

6.9

Crew

8.0

Reviews

1 / 20
10.0
Excellent

Jeremy,Dec 2025

OKC - CLT

Was an okay flight. Had extra seat empty beside me so was able to stretch a bit
American Airlines
7.2
Good
11,048 reviews
American Airlines
7.2
Good
11,048 reviews
Check prices

Boarding

7.5

Food

6.5

Comfort

7.2

Overall

7.2

Entertainment

6.9

Crew

8.0

Reviews

1 / 20
10.0
Excellent

Jeremy,Dec 2025

OKC - CLT

Was an okay flight. Had extra seat empty beside me so was able to stretch a bit

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, United Airlines, and Delta fly from Washington, D.C. to Sydney in about 23h. The time it takes to get you to your destination can typically vary by up to 52m. The distance between Washington, D.C. and Sydney is about 15670 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 $2,322.

  • What are the cheapest airlines to fly from Washington, D.C. to Sydney one-way?

    The cheapet airlines for a one-way flight from Washington, D.C. to Sydney are American Airlines ($617), Qantas Airways ($636), and United Airlines ($1,341).

  • 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 $206). Flying from Washington, D.C. to Sydney in May is currently the most expensive (average of $1,256). 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
Terrigal
Manly
Randwick
Lithgow
Coogee
Leura
Cronulla
Bondi Beach

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.
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 16 December 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$2,181Average$2,608FlexibilityNo 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.