Find flights
When to book
Airlines
FAQs

Cheap flights from Washington to Sydney from $749

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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SYD
31 Mar — 7 Apr1
1 adult

Cheap flight deals from Washington to Sydney

Keep the following information in mind while searching for Washington to Sydney flight deals. Data was last updated 26 March 2025.

Round-trip from

$1,390

One-way from

$749

Popular in

December

Cheapest in

March

Average price

$1,643
United Airlines
  • United Airlines
  • 31/7-16/8
  • 4 total stops
  • 49h 15m total
  • Washington to Sydney
Search Deals
9/4
  • 9/4
  • 1 total stop
  • 26h 50m total
  • Washington to Sydney
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($303 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($82 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2025
Search Deals

Find flight deals from Washington to Sydney

Cheapest flights from Washington to Sydney
Explore the most affordable flight options available from Washington to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 March 2025.

Thu 31/713:37GEG - SYD
2 stops24h 18mUnited Airlines
Sat 16/809:30SYD - GEG
2 stops24h 57mUnited Airlines
Deal found 25/3$1,390
Wed 17/915:25PDX - SYD
1 stop22h 55mAir Canada
Wed 24/909:20SYD - PDX
1 stop22h 26mAir Canada
Deal found 25/3$1,422
Sun 7/915:25PDX - SYD
1 stop22h 55mMultiple Airlines
Sat 20/920:00SYD - PDX
2 stops30h 31mMultiple Airlines
Deal found 26/3$1,462
Wed 14/520:40SEA - SYD
1 stop25h 00mMultiple Airlines
Thu 29/516:20SYD - SEA
1 stop30h 55mMultiple Airlines
Deal found 25/3$1,468
Thu 8/512:09PDX - SYD
1 stop25h 56mAmerican Airlines
Thu 22/509:10SYD - PDX
1 stop19h 15mAmerican Airlines
Deal found 25/3$1,506
Sat 3/515:46PDX - SYD
1 stop22h 09mUnited Airlines
Sat 10/510:20SYD - PDX
1 stop24h 57mUnited Airlines
Deal found 25/3$1,530
Fri 9/523:35SEA - SYD
1 stop39h 25mPhilippine Airlines
Fri 16/510:10SYD - SEA
1 stop26h 05mPhilippine Airlines
Deal found 25/3$1,656
Mon 5/519:15SEA - SYD
1 stop19h 05mAir Canada
Tue 3/609:20SYD - SEA
1 stop20h 38mAir Canada
Deal found 24/3$1,670
Sun 19/1013:45SEA - SYD
2 stops36h 30mANA
Sun 26/1021:45SYD - SEA
2 stops38h 40mANA
Deal found 26/3$1,686
Mon 12/517:40SEA - SYD
1 stop20h 15mUnited Airlines
Sun 25/510:20SYD - SEA
1 stop18h 01mUnited Airlines
Deal found 25/3$1,746
Sat 10/508:15SEA - SYD
1 stop18h 30mHawaiian Airlines
Sat 17/521:40SYD - SEA
1 stop25h 35mHawaiian Airlines
Deal found 26/3$1,770
Fri 16/508:25SEA - SYD
1 stop18h 20mAlaska Airlines
Fri 23/521:40SYD - SEA
1 stop18h 53mAlaska Airlines
Deal found 25/3$1,827

Cheapflights Fare Finder

Customise your flight search to find flights from Washington 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 26 March 2025.
Use the filters below to find and compare flights from Washington to Sydney that are best for you.

Fly from

Washington

Fly to

Sydney

Route

Depart

Return

Price

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Thu 31/7

13:37-06:55

2 stops24h 18m

Sydney Kingsford Smith

Sat 16/8

09:30-17:27

2 stops24h 57m

$1,390

PortlandSydney

PDX - SYD

PDXSYD

Portland

Wed 17/9

15:25-07:20

1 stop22h 55m

Sydney Kingsford Smith

Wed 24/9

09:20-14:46

1 stop22h 26m

$1,422

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sun 7/9

15:25-07:20

1 stop22h 55m

Sydney Kingsford Smith

Sat 20/9

20:00-09:31

2 stops30h 31m

$1,462

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Wed 14/5

20:40-14:40

1 stop25h 00m

Sydney Kingsford Smith

Thu 29/5

16:20-06:15

1 stop30h 55m

$1,468

PortlandSydney

PDX - SYD

PDXSYD

Portland

Thu 8/5

12:09-07:05

1 stop25h 56m

Sydney Kingsford Smith

Thu 22/5

09:10-11:25

1 stop19h 15m

$1,506

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sat 3/5

15:46-06:55

1 stop22h 09m

Sydney Kingsford Smith

Sat 10/5

10:20-18:17

1 stop24h 57m

$1,530

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Fri 9/5

23:35-08:00

1 stop39h 25m

Sydney Kingsford Smith

Fri 16/5

10:10-19:15

1 stop26h 05m

$1,656

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sat 16/8

14:55-07:20

1 stop23h 25m

Sydney Kingsford Smith

Sat 30/8

09:20-09:21

1 stop17h 01m

$1,668

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Tue 26/8

13:45-09:25

2 stops26h 40m

Sydney Kingsford Smith

Tue 9/9

11:50-18:36

2 stops23h 46m

$1,690

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 12/5

17:40-06:55

1 stop20h 15m

Sydney Kingsford Smith

Sun 25/5

10:20-11:21

1 stop18h 01m

$1,746

Flights are sorted by cheapest return flights first.

Deals found on 24/3

Showing 1-10 of 52 results
1
2
3
...
6

Best time to book a flight from Washington to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Washington 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 to Sydney

What is the cheapest month to book a flight from State of Washington to Sydney?

Currently, May is the cheapest month in which you can book a flight from State of Washington to Sydney (average of $129). Flying from State of Washington 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 WA to SYD?

Find hourly flight availability from Washington 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 26 March 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from State of Washington to Sydney as you normally would.

Rainfall in Sydney by month

Plan your trip to Sydney by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Sydney ranges from 50.0 - 130.0 inches per month. March is typically the wettest month, when rainfall can reach 130.0 mm. September is typically the driest time to visit Sydney when rainfall is around 50.0 mm.

Temperature in Sydney by month

Plan your trip to Sydney by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Sydney, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 22.0 C. Travellers hoping to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 11.0 C).

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 26 March 2025.
To help decide which airline to fly from Washington to Sydney, see what other customers have to say about Air Tahiti Nui, ANA and China Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Tahiti Nui
8.7
Very Good
61 reviews
Check prices

Boarding

8.7

Comfort

8.0

Crew

9.1

Overall

8.7

Food

7.8

Entertainment

7.2

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Air Tahiti Nui
8.7
Very Good
61 reviews
Air Tahiti Nui
8.7
Very Good
61 reviews
Check prices

Boarding

8.7

Comfort

8.0

Crew

9.1

Overall

8.7

Food

7.8

Entertainment

7.2

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
ANA
8.3
Very Good
828 reviews
Air Tahiti Nui
8.7
Very Good
61 reviews
Check prices

Boarding

8.7

Comfort

8.0

Crew

9.1

Overall

8.7

Food

7.8

Entertainment

7.2

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
China Airlines
8.2
Very Good
722 reviews
Air Tahiti Nui
8.7
Very Good
61 reviews
Check prices

Boarding

8.7

Comfort

8.0

Crew

9.1

Overall

8.7

Food

7.8

Entertainment

7.2

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Asiana Airlines
8.2
Very Good
441 reviews
Air Tahiti Nui
8.7
Very Good
61 reviews
Check prices

Boarding

8.7

Comfort

8.0

Crew

9.1

Overall

8.7

Food

7.8

Entertainment

7.2

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Singapore Airlines
8.1
Very Good
1,284 reviews
Air Tahiti Nui
8.7
Very Good
61 reviews
Check prices

Boarding

8.7

Comfort

8.0

Crew

9.1

Overall

8.7

Food

7.8

Entertainment

7.2

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

Related info for your journey

Find useful and relevant information for your journey from Washington 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?

    Most people fly into Sydney Kingsford Smith (SYD) if they book a flight to Sydney from Washington. Kingsford Smith is conveniently located just 7.5 km from Sydney’s city centre.

  • What are the cheapest airlines to fly from State of Washington to Sydney one-way?

    The cheapest airline one-way is Alaska Airlines, with whom users have recently found tickets for as low as $860. However, be on the lookout for offers from Philippine Airlines and Air Canada, as they are both options that can get you from State of Washington to Sydney for a low price.

  • What are the most popular routes from State of Washington to Sydney?

    When deciding which route to take from State of Washington to Sydney, consider Seattle/Tacoma Intl - Sydney Kingsford Smith, Portland - Sydney Kingsford Smith or Spokane - Sydney Kingsford Smith, as they are the most popular.

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

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

  • How can I find direct flights from Washington to Sydney?

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

  • Can I find deals for business class flights from Washington to Sydney?

    Yes. Cheapflights offers flight deals from Washington 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 State of Washington to Sydney?

    Currently, May is the cheapest month in which you can book a flight from State of Washington to Sydney (average of $129). Flying from State of Washington 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 Washington?

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

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 to Sydney

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Sydney flights
Dallas/Fort Worth to Sydney flights
John F Kennedy Intl to Sydney flights
San Francisco to Sydney flights
Newark to Sydney flights
Dulles Intl to Sydney flights
Baltimore to Sydney flights
Reagan-National to Sydney flights
O'Hare Intl to Sydney flights
Atlanta to Sydney flights
Seattle to Sydney flights
Hobby to Sydney flights
Honolulu to Sydney flights
Boston to Sydney flights
Denver to Sydney flights
George Bush Intcntl to Sydney flights
Midway to Sydney flights
Minneapolis to Sydney flights
Miami to Sydney flights
Sky Harbor Intl to Sydney flights
Detroit to Sydney flights
Orlando to Sydney flights
Philadelphia to Sydney flights
Salt Lake City to Sydney flights
Fort Lauderdale to Sydney flights
San Jose to Sydney flights
Raleigh to Sydney flights
Charlotte to Sydney flights
Tampa to Sydney flights
Austin to Sydney flights
San Diego to Sydney flights
Nashville to Sydney flights
Kansas City to Sydney flights
Cincinnati to Sydney flights
Birmingham to Sydney flights
Indianapolis to Sydney flights
Portland to Sydney flights
Sacramento to Sydney flights
Las Vegas to Sydney flights
Love Field to Sydney flights
Pittsburgh to Sydney flights
Omaha to Sydney flights
Columbus to Sydney flights
Oakland to Sydney flights
St. Louis to Sydney flights

Top 2 airlines flying from Washington to Sydney

Discover the top 2 airlines that operate flights from Washington 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 26 March 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,197Average$1,621FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapest$1,334Average$1,683FlexibilityNo cancel feeOn-time67%
Search Air Canada 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 to Sydney?

Deals for Washington to Sydney flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Washington to Sydney?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Sydney from Washington.

Can Cheapflights find flights from Washington to Sydney with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Washington to Sydney, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Washington to Sydney become cheaper?

Yes, Cheapflights offers price alerts on Washington to Sydney flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the 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.