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Cheap flights from Washington to Sydney from $674

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 18/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SYD
6 May — 13 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 1 May 2025.

Round-trip from

$1,372

One-way from

$674

Popular in

December

Cheapest in

March

Average price

$1,829
United Airlines
  • United Airlines
  • 31/7-16/8
  • 4 total stops
  • 57h 27m total
  • Washington to Sydney
Search Deals
United Airlines
  • United Airlines
  • 18/10
  • 1 total stop
  • 28h 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 May 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 1 May 2025.

Thu 31/705:30GEG - SYD
2 stops32h 30mUnited Airlines
Sat 16/809:30SYD - GEG
2 stops24h 57mUnited Airlines
Deal found 30/4$1,372
Sat 9/819:46PDX - SYD
1 stop18h 09mUnited Airlines
Sat 30/810:20SYD - PDX
1 stop25h 12mUnited Airlines
Deal found 30/4$1,510
Wed 6/807:10SEA - SYD
2 stops30h 25mDelta
Sat 23/809:25SYD - SEA
1 stop22h 15mDelta
Deal found 30/4$1,557
Mon 2/618:52SEA - SYD
1 stop19h 38mMultiple Airlines
Thu 5/616:20SYD - SEA
2 stops31h 16mMultiple Airlines
Deal found 30/4$1,558
Sun 17/813:37PDX - SYD
1 stop24h 18mVirgin Australia
Sat 30/810:20SYD - PDX
1 stop25h 12mVirgin Australia
Deal found 29/4$1,613
Sun 19/1023:35SEA - SYD
1 stop39h 25mPhilippine Airlines
Sun 26/1011:15SYD - SEA
1 stop26h 20mPhilippine Airlines
Deal found 29/4$1,666
Sun 7/913:45SEA - SYD
2 stops26h 40mANA
Tue 16/911:50SYD - SEA
2 stops23h 46mANA
Deal found 30/4$1,672
Sat 14/612:44SEA - SYD
2 stops25h 16mUnited Airlines
Sun 22/609:30SYD - SEA
2 stops28h 41mUnited Airlines
Deal found 30/4$1,686
Sun 25/516:00SEA - SYD
1 stop22h 05mQantas Airways
Sun 8/617:45SYD - SEA
1 stop21h 00mQantas Airways
Deal found 30/4$1,779
Thu 28/808:15SEA - SYD
1 stop18h 30mHawaiian Airlines
Tue 2/921:40SYD - SEA
1 stop25h 23mHawaiian Airlines
Deal found 29/4$1,801
Wed 7/508:05PDX - SYD
1 stop18h 40mAlaska Airlines
Sat 17/521:40SYD - PDX
1 stop17h 15mAlaska Airlines
Deal found 1/5$1,810
Sun 7/913:45SEA - SYD
1 stop24h 35mAir Canada
Tue 16/907:30SYD - SEA
2 stops22h 35mAir Canada
Deal found 29/4$1,813

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 1 May 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

15:28-06:55

1 stop22h 27m

Sydney Kingsford Smith

Sat 16/8

09:30-17:27

2 stops24h 57m

$1,372

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sat 9/8

19:46-06:55

1 stop18h 09m

Sydney Kingsford Smith

Sat 30/8

10:20-18:32

1 stop25h 12m

$1,510

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Wed 6/8

13:30-06:35

2 stops24h 05m

Sydney Kingsford Smith

Sat 23/8

09:25-22:23

2 stops29h 58m

$1,557

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 2/6

18:52-07:30

1 stop19h 38m

Sydney Kingsford Smith

Thu 5/6

16:20-06:36

2 stops31h 16m

$1,558

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sun 17/8

13:37-06:55

1 stop24h 18m

Sydney Kingsford Smith

Sat 30/8

10:20-18:32

1 stop25h 12m

$1,613

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

$1,666

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 7/9

13:45-09:25

2 stops26h 40m

Sydney Kingsford Smith

Tue 16/9

11:50-18:36

2 stops23h 46m

$1,672

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sat 14/6

12:44-07:00

2 stops25h 16m

Sydney Kingsford Smith

Sun 22/6

09:30-21:11

2 stops28h 41m

$1,686

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 25/5

16:00-07:05

1 stop22h 05m

Sydney Kingsford Smith

Sun 8/6

17:45-21:45

1 stop21h 00m

$1,779

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Thu 28/8

08:15-19:45

1 stop18h 30m

Sydney Kingsford Smith

Tue 2/9

21:40-06:03

1 stop25h 23m

$1,801

Flights are sorted by cheapest return flights first.

Deals found on 30/4

Showing 1-10 of 51 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 1 May 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 1 May 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

Food

7.8

Overall

8.8

Boarding

8.7

Crew

9.1

Comfort

8.1

Entertainment

7.3

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

Food

7.8

Overall

8.8

Boarding

8.7

Crew

9.1

Comfort

8.1

Entertainment

7.3

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

Food

7.8

Overall

8.8

Boarding

8.7

Crew

9.1

Comfort

8.1

Entertainment

7.3

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

Food

7.8

Overall

8.8

Boarding

8.7

Crew

9.1

Comfort

8.1

Entertainment

7.3

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

Food

7.8

Overall

8.8

Boarding

8.7

Crew

9.1

Comfort

8.1

Entertainment

7.3

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
1,292 reviews
Air Tahiti Nui
8.8
Very Good
62 reviews
Check prices

Food

7.8

Overall

8.8

Boarding

8.7

Crew

9.1

Comfort

8.1

Entertainment

7.3

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 United Airlines, with whom users have recently found tickets for as low as $674. However, be on the lookout for offers from Virgin Australia 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
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 1 May 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,179Average$1,443FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapest$1,313Average$1,657FlexibilityNo 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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