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Cheap flights from Washington to Sydney from $668

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 19/8. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SYD
27 Feb — 6 Mar1
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 22 February 2025.

Round-trip from

$1,370

One-way from

$668

Popular in

December

Cheapest in

March

Average price

$1,648
Delta
  • Delta
  • 25/5-1/6
  • 4 total stops
  • 63h 24m total
  • Washington to Sydney
Search Deals
United Airlines
  • United Airlines
  • 19/8
  • 2 total stops
  • 32h 12m total
  • Washington to Sydney
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($301 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 February 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 22 February 2025.

Sun 25/505:45SEA - SYD
2 stops31h 50mDelta
Sun 1/609:25SYD - SEA
2 stops31h 34mDelta
Deal found 21/2$1,370
Thu 31/713:37GEG - SYD
2 stops24h 18mUnited Airlines
Sat 16/809:30SYD - GEG
2 stops28h 18mUnited Airlines
Deal found 21/2$1,381
Wed 26/1119:05SEA - SYD
2 stops24h 35mMultiple Airlines
Fri 5/1207:05SYD - SEA
2 stops21h 45mMultiple Airlines
Deal found 22/2$1,381
Mon 3/319:05SEA - SYD
2 stops28h 00mAir Canada
Mon 10/311:20SYD - SEA
1 stop25h 05mAir Canada
Deal found 21/2$1,382
Sun 25/513:00PDX - SYD
1 stop24h 35mDelta
Tue 10/609:25SYD - PDX
1 stop19h 17mDelta
Deal found 22/2$1,453
Mon 26/519:40PDX - SYD
2 stops22h 00mAir Canada
Mon 9/607:00SYD - PDX
2 stops24h 40mAir Canada
Deal found 22/2$1,459
Sun 13/415:45PDX - SYD
1 stop22h 10mUnited Airlines
Sun 27/409:30SYD - PDX
2 stops54h 18mUnited Airlines
Deal found 22/2$1,467
Sun 13/423:30SEA - SYD
1 stop39h 30mPhilippine Airlines
Sun 27/410:10SYD - SEA
1 stop26h 10mPhilippine Airlines
Deal found 22/2$1,491
Sat 12/417:10SEA - SYD
1 stop20h 50mUnited Airlines
Mon 21/409:30SYD - SEA
1 stop29h 13mUnited Airlines
Deal found 22/2$1,549
Wed 19/310:12SEA - SYD
1 stop28h 48mAlaska Airlines
Sat 19/409:10SYD - SEA
1 stop20h 33mAlaska Airlines
Deal found 22/2$1,623
Sun 25/512:09PDX - SYD
1 stop25h 56mAmerican Airlines
Sat 31/509:10SYD - PDX
1 stop19h 20mAmerican Airlines
Deal found 22/2$1,649
Sat 24/513:45SEA - SYD
2 stops36h 30mANA
Sat 31/520:55SYD - SEA
2 stops38h 38mANA
Deal found 21/2$1,656

Find flights from Washington to Sydney within your budget

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 22 February 2025.

Fly from

Washington

Fly to

Sydney

Route

Depart

Return

Price

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 25/5

05:45-06:35

2 stops31h 50m

Sydney Kingsford Smith

Sun 1/6

09:25-23:59

2 stops31h 34m

$1,370

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Thu 31/7

13:37-06:55

2 stops24h 18m

Sydney Kingsford Smith

Sat 16/8

09:30-20:48

2 stops28h 18m

$1,381

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 23/6

14:55-10:40

2 stops26h 45m

Sydney Kingsford Smith

Mon 30/6

06:30-09:21

2 stops19h 51m

$1,382

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sun 25/5

13:00-06:35

1 stop24h 35m

Sydney Kingsford Smith

Tue 10/6

09:25-11:42

1 stop19h 17m

$1,453

PortlandSydney

PDX - SYD

PDXSYD

Portland

Mon 26/5

19:40-10:40

2 stops22h 00m

Sydney Kingsford Smith

Mon 9/6

07:00-14:40

2 stops24h 40m

$1,459

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sun 13/4

23:59-07:00

2 stops38h 01m

Sydney Kingsford Smith

Sun 27/4

09:30-22:48

2 stops54h 18m

$1,467

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 13/4

23:30-08:00

1 stop39h 30m

Sydney Kingsford Smith

Sun 27/4

10:10-19:20

1 stop26h 10m

$1,491

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Thu 1/5

06:00-07:30

2 stops32h 30m

Sydney Kingsford Smith

Mon 12/5

16:20-23:44

1 stop24h 24m

$1,524

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sat 12/4

17:10-07:00

1 stop20h 50m

Sydney Kingsford Smith

Mon 21/4

09:30-21:43

1 stop29h 13m

$1,549

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Wed 19/3

10:12-09:00

1 stop28h 48m

Sydney Kingsford Smith

Sat 19/4

09:10-12:43

1 stop20h 33m

$1,623

Flights are sorted by cheapest return flights first.

Deals found on 20/2

Showing 1-10 of 48 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.

Travel insights for flights from Washington to Sydney

Get recent, data-driven insights about flights from Washington to Sydney including ideal travel times, pricing trends, and more.

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 22 February 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 22 February 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 Asiana 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

Entertainment

7.2

Comfort

8.0

Food

7.8

Overall

8.7

Crew

9.1

Boarding

8.7

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

Entertainment

7.2

Comfort

8.0

Food

7.8

Overall

8.7

Crew

9.1

Boarding

8.7

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
8.4
Very Good
836 reviews
Air Tahiti Nui
8.7
Very Good
61 reviews
Check prices

Entertainment

7.2

Comfort

8.0

Food

7.8

Overall

8.7

Crew

9.1

Boarding

8.7

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
8.3
Very Good
444 reviews
Air Tahiti Nui
8.7
Very Good
61 reviews
Check prices

Entertainment

7.2

Comfort

8.0

Food

7.8

Overall

8.7

Crew

9.1

Boarding

8.7

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
723 reviews
Air Tahiti Nui
8.7
Very Good
61 reviews
Check prices

Entertainment

7.2

Comfort

8.0

Food

7.8

Overall

8.7

Crew

9.1

Boarding

8.7

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
1,296 reviews
Air Tahiti Nui
8.7
Very Good
61 reviews
Check prices

Entertainment

7.2

Comfort

8.0

Food

7.8

Overall

8.7

Crew

9.1

Boarding

8.7

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 $668. However, be on the lookout for offers from American 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
Randwick
Manly
Penrith
Coogee
Cronulla
Terrigal
Bondi Beach
Lithgow
Leura
Swansea

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Alternative routes for Washington to Sydney

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Top 3 airlines flying from Washington to Sydney

Discover the top 3 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 22 February 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$858Average$1,791FlexibilityNo cancel feeOn-time85%
Search Hawaiian Airlines flights
United AirlinesCheapest$1,186Average$1,771FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapest$1,258Average$1,578FlexibilityNo 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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