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Cheap flights from Washington to Sydney from $709

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 12/6. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SYD
4 May — 11 May1
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 29 April 2025.

Round-trip from

$1,558

One-way from

$709

Popular in

December

Cheapest in

March

Average price

$1,747
29/5-5/6
  • 29/5-5/6
  • 3 total stops
  • 60h 05m total
  • Washington to Sydney
Search Deals
12/6
  • 12/6
  • 1 total stop
  • 25h 00m total
  • Washington to Sydney
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($314 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($80 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 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 29 April 2025.

Thu 29/517:33PDX - SYD
1 stop28h 07mMultiple Airlines
Thu 5/616:20SYD - PDX
2 stops31h 58mMultiple Airlines
Deal found 28/4$1,558
Wed 11/615:55SEA - SYD
1 stop29h 45mMultiple Airlines
Wed 18/616:20SYD - SEA
1 stop24h 04mMultiple Airlines
Deal found 28/4$1,574
Fri 7/1123:55SEA - SYD
1 stop38h 50mPhilippine Airlines
Wed 19/1111:35SYD - SEA
1 stop27h 00mPhilippine Airlines
Deal found 27/4$1,655
Thu 12/614:30SEA - SYD
2 stops23h 30mUnited Airlines
Thu 19/609:30SYD - SEA
2 stops28h 41mUnited Airlines
Deal found 28/4$1,686
Mon 20/1014:40GEG - SYD
2 stops24h 05mMultiple Airlines
Mon 27/1013:55SYD - GEG
2 stops25h 29mMultiple Airlines
Deal found 28/4$1,713
Tue 12/817:10SEA - SYD
2 stops24h 25mAir New Zealand
Wed 20/811:50SYD - SEA
2 stops27h 25mAir New Zealand
Deal found 27/4$1,730
Tue 21/1017:40PDX - SYD
2 stops21h 05mAir New Zealand
Tue 18/1111:45SYD - PDX
2 stops21h 57mAir New Zealand
Deal found 28/4$1,730
Thu 12/614:25SEA - SYD
1 stop23h 10mDelta
Thu 19/609:25SYD - SEA
1 stop22h 20mDelta
Deal found 28/4$1,744
Tue 13/518:50SEA - SYD
1 stop31h 55mHawaiian Airlines
Sat 17/521:40SYD - SEA
1 stop25h 35mHawaiian Airlines
Deal found 28/4$1,777
Sun 16/1115:35SEA - SYD
1 stop22h 25mQantas Airways
Fri 28/1117:25SYD - SEA
1 stop20h 26mQantas Airways
Deal found 28/4$1,778
Sun 7/913:45SEA - SYD
1 stop24h 35mAir Canada
Tue 16/909:20SYD - SEA
1 stop17h 01mAir Canada
Deal found 28/4$1,786
Tue 21/1019:40PDX - SYD
1 stop18h 40mAir Canada
Tue 11/1111:20SYD - PDX
1 stop22h 24mAir Canada
Deal found 28/4$1,786

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 29 April 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

PortlandSydney

PDX - SYD

PDXSYD

Portland

Thu 29/5

17:33-14:40

1 stop28h 07m

Sydney Kingsford Smith

Thu 5/6

16:20-07:18

2 stops31h 58m

$1,558

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Wed 11/6

15:55-14:40

1 stop29h 45m

Sydney Kingsford Smith

Wed 18/6

16:20-23:24

1 stop24h 04m

$1,564

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 19/10

23:35-09:00

1 stop39h 25m

Sydney Kingsford Smith

Sun 26/10

11:15-19:35

1 stop26h 20m

$1,664

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Thu 12/6

14:30-07:00

2 stops23h 30m

Sydney Kingsford Smith

Thu 19/6

09:30-21:11

2 stops28h 41m

$1,686

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Mon 20/10

14:40-08:45

2 stops24h 05m

Sydney Kingsford Smith

Mon 27/10

13:55-21:24

2 stops25h 29m

$1,713

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Tue 12/8

17:10-10:35

2 stops24h 25m

Sydney Kingsford Smith

Wed 20/8

11:50-22:15

2 stops27h 25m

$1,730

PortlandSydney

PDX - SYD

PDXSYD

Portland

Tue 21/10

17:40-08:45

2 stops21h 05m

Sydney Kingsford Smith

Tue 11/11

09:55-14:42

2 stops23h 47m

$1,730

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Thu 12/6

14:25-06:35

1 stop23h 10m

Sydney Kingsford Smith

Thu 19/6

09:25-14:45

1 stop22h 20m

$1,744

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Tue 13/5

18:50-19:45

1 stop31h 55m

Sydney Kingsford Smith

Sat 17/5

21:40-06:15

1 stop25h 35m

$1,777

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 8/9

17:59-07:30

1 stop20h 31m

Sydney Kingsford Smith

Mon 29/9

17:45-20:24

1 stop19h 39m

$1,778

Flights are sorted by cheapest return flights first.

Deals found on 27/4

Showing 1-10 of 53 results
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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 29 April 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 29 April 2025.
To help decide which airline to fly from Washington to Sydney, see what other customers have to say about Air Tahiti Nui, China Airlines and ANA. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Tahiti Nui
8.8
Very Good
62 reviews
Check prices

Entertainment

7.3

Boarding

8.7

Overall

8.8

Comfort

8.1

Food

7.8

Crew

9.1

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
8.8
Very Good
62 reviews
Air Tahiti Nui
8.8
Very Good
62 reviews
Check prices

Entertainment

7.3

Boarding

8.7

Overall

8.8

Comfort

8.1

Food

7.8

Crew

9.1

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
8.3
Very Good
729 reviews
Air Tahiti Nui
8.8
Very Good
62 reviews
Check prices

Entertainment

7.3

Boarding

8.7

Overall

8.8

Comfort

8.1

Food

7.8

Crew

9.1

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
855 reviews
Air Tahiti Nui
8.8
Very Good
62 reviews
Check prices

Entertainment

7.3

Boarding

8.7

Overall

8.8

Comfort

8.1

Food

7.8

Crew

9.1

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
442 reviews
Air Tahiti Nui
8.8
Very Good
62 reviews
Check prices

Entertainment

7.3

Boarding

8.7

Overall

8.8

Comfort

8.1

Food

7.8

Crew

9.1

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.
Fiji Airways
8.1
Very Good
190 reviews
Air Tahiti Nui
8.8
Very Good
62 reviews
Check prices

Entertainment

7.3

Boarding

8.7

Overall

8.8

Comfort

8.1

Food

7.8

Crew

9.1

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 Air Canada, with whom users have recently found tickets for as low as $731. However, be on the lookout for offers from Qantas Airways and United Airlines, 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
Randwick
Terrigal
Cronulla
Lithgow
Bondi Beach
Leura
Swansea

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Alternative routes for Washington to Sydney

See prices for flight routes from nearby airports that may be better suited for you.
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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 29 April 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,177Average$1,441FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapest$1,312Average$1,655FlexibilityNo 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.

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