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$278+ Cheap flights from Washington to Sydney (SYD)

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 11/26. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SYD
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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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 October 30, 2025.

This American Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/303:10 pmGEG - SYD
2 stops23h 50mAmerican Airlines
Thu 11/611:20 amSYD - GEG
2 stops21h 35mAmerican Airlines
Deal found 10/30$865
This United Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/302:50 pmPSC - SYD
1 stop24h 25mUnited Airlines
Thu 11/612:10 pmSYD - PSC
1 stop18h 31mUnited Airlines
Deal found 10/29$871
This United Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/301:47 pmGEG - SYD
2 stops25h 18mUnited Airlines
Thu 11/612:10 pmSYD - GEG
1 stop17h 32mUnited Airlines
Deal found 10/29$872
This United Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/112:45 pmPSC - SYD
2 stops26h 20mUnited Airlines
Fri 11/712:10 pmSYD - PSC
1 stop18h 31mUnited Airlines
Deal found 10/29$877
This Kiwi.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/293:40 pmSEA - SYD
1 stop33h 35mMultiple Airlines
Fri 12/129:40 pmSYD - SEA
1 stop18h 07mMultiple Airlines
Deal found 10/28$904
This Kiwi.com deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2910:05 amSEA - SYD
2 stops39h 10mMultiple Airlines
Sat 12/69:40 pmSYD - SEA
1 stop36h 00mMultiple Airlines
Deal found 10/30$914
This Kiwi.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/13:40 pmSEA - SYD
1 stop33h 35mMultiple Airlines
Fri 12/129:40 pmSYD - SEA
1 stop18h 07mMultiple Airlines
Deal found 10/28$930
This lastminute.com deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/239:30 pmSEA - SYD
1 stop41h 20mMultiple Airlines
Sat 12/69:40 pmSYD - SEA
1 stop26h 35mMultiple Airlines
Deal found 10/29$956
This Gotogate deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/263:40 pmSEA - SYD
1 stop33h 35mMultiple Airlines
Wed 12/311:20 amSYD - SEA
1 stop22h 11mMultiple Airlines
Deal found 10/29$958
This Kiwi.com deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2510:05 amSEA - SYD
2 stops39h 10mMultiple Airlines
Tue 12/29:40 pmSYD - SEA
1 stop36h 00mMultiple Airlines
Deal found 10/29$963
This Trip.com deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/171:21 pmPDX - SYD
1 stop24h 39mMultiple Airlines
Mon 11/2411:20 amSYD - PDX
1 stop24h 00mMultiple Airlines
Deal found 10/29$992
This Kiwi.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2910:30 pmSEA - SYD
1 stop41h 20mMultiple Airlines
Tue 11/189:40 pmSYD - SEA
1 stop20h 41mMultiple Airlines
Deal found 10/28$1,015

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 October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$832
(Expedia)

One-way from

$278
(Booking.com)

Popular in

December

Cheapest in

August

Average price

$964
Provider with most accurate pricing for Seattle/Tacoma Intl-Sydney Kingsford Smith flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Sydney Kingsford Smith flights.
Search Deals
From Washington to Sydney Kingsford Smith
Search Deals
One-way flight from Washington to Sydney Kingsford Smith
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($151 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated October 30, 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

Mon 3/23

3:45 pm-9:00 am

2 stops23h 15m

Sydney Kingsford Smith

Thu 4/16

5:45 pm-10:56 pm

2 stops22h 11m

$889

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Mon 3/23

7:00 am-9:15 am

1 stop32h 15m

Sydney Kingsford Smith

Thu 4/16

10:20 am-9:24 pm

1 stop28h 04m

$892

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Fri 1/23

4:10 pm-6:20 am

2 stops43h 10m

Sydney Kingsford Smith

Fri 1/30

12:10 pm-10:44 am

1 stop17h 34m

$896

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Tue 3/24

10:49 am-6:10 am

2 stops25h 21m

Sydney Kingsford Smith

Tue 4/14

5:45 pm-10:56 pm

2 stops22h 11m

$910

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Tue 3/24

12:30 pm-9:15 am

1 stop26h 45m

Sydney Kingsford Smith

Tue 4/14

9:30 am-3:19 pm

2 stops22h 49m

$912

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Mon 3/23

7:00 am-9:15 am

1 stop32h 15m

Sydney Kingsford Smith

Mon 4/13

9:30 am-3:19 pm

2 stops22h 49m

$912

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Tue 3/31

11:40 am-7:55 am

2 stops26h 15m

Sydney Kingsford Smith

Tue 4/14

9:30 am-3:19 pm

2 stops22h 49m

$923

PortlandSydney

PDX - SYD

PDXSYD

Portland

Fri 2/6

2:30 pm-6:10 am

1 stop20h 40m

Sydney Kingsford Smith

Mon 2/23

8:30 am-5:11 pm

2 stops27h 41m

$1,035

PortlandSydney

PDX - SYD

PDXSYD

Portland

Fri 2/6

9:50 am-9:35 am

1 stop28h 45m

Sydney Kingsford Smith

Mon 2/23

11:20 am-9:15 am

1 stop16h 55m

$1,081

PascoSydney

PSC - SYD

PSCSYD

Pasco Tri Cities

Thu 11/13

2:50 pm-9:15 am

1 stop23h 25m

Sydney Kingsford Smith

Mon 11/17

12:10 pm-11:41 am

1 stop18h 31m

$1,105

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 56 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 round-trip 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, July is the cheapest month in which you can book a flight from State of Washington to Sydney (average of $543). Flying from State of Washington to Sydney in January is currently the most expensive (average of $852). 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 October 30, 2025.

When flying from State of Washington to Sydney, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 19% versus a flight at noon.

What is the cheapest day to fly from State of Washington to Sydney?

Use this chart to determine the cheapest time to fly round-trip from Washington to Sydney. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their State of Washington to Sydney flight should consider departing on Wednesday evenings when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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?

    For a flight from Washington to Sydney, you will be flying into Kingsford Smith. Sydney Kingsford Smith (SYD) is just 4.6 mi from the center of the city.

  • How long is the flight from State of Washington to Sydney?

    There are many flights that can get you from State of Washington to Sydney in 20h 40m. Fly via American Airlines, United Airlines, or Qantas Airways to get the fastest option. Airlines will cover a distance of 7674 mi. This flight may include one or multiple stops.

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

    $287 is the cheapest one-way deal found within the past few days, from ANA. You may also be able to find cheap deals on Philippine Airlines and United Airlines, with prices starting from $407 and $474, respectively.

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

    While some choose either Portland - Sydney Kingsford Smith or Spokane - Sydney Kingsford Smith, Seattle/Tacoma Intl - Sydney Kingsford Smith is the most popular route from State of Washington to Sydney.

  • 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 vacation 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, July is the cheapest month in which you can book a flight from State of Washington to Sydney (average of $543). Flying from State of Washington to Sydney in January is currently the most expensive (average of $852). 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

Traveling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Manly
Coogee

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Top 8 airlines flying from Washington to Sydney

Discover the top 8 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 2,558,603 searches. Data last updated October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
ANACheapest$583Average$615FlexibilityNo cancel feeOn-time80%
Alaska AirlinesCheapest$591Average$1,165FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$780Average$1,050FlexibilityNo cancel feeOn-time67%
Qantas AirwaysCheapest$789Average$881FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$804Average$976FlexibilityNo cancel feeOn-time71%
Hawaiian AirlinesCheapest$820Average$1,145FlexibilityNo cancel feeOn-time85%
United AirlinesCheapest$832Average$1,104FlexibilityNo cancel feeOn-time69%
DeltaCheapest$842Average$1,160FlexibilityNo cancel feeOn-timeN/A

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