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$388+ 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 3/31. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SYD
Jan 15 — Jan 221
Thu 1/15
Thu 1/22
1 adult, Economy
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Cheap 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 December 16, 2025.

This Qantas Airways deal was found by Cheapflights users on 12/15. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/296:20 amPDX - SYD
1 stop31h 40mQantas Airways
Tue 1/137:15 pmSYD - PDX
2 stops37h 20mQantas Airways
Deal found 12/15$1,013
This Air Canada deal was found by Cheapflights users on 12/16. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/318:00 pmSEA - SYD
1 stop18h 35mAir Canada
Tue 2/1011:20 amSYD - SEA
1 stop26h 56mAir Canada
Deal found 12/16$1,133
This Air Canada deal was found by Cheapflights users on 12/16. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/278:00 pmSEA - SYD
1 stop18h 35mAir Canada
Sat 1/177:15 pmSYD - SEA
2 stops33h 16mAir Canada
Deal found 12/16$1,146
This oojo deal was found by Cheapflights users on 12/16. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/276:20 amPDX - SYD
1 stop31h 40mQantas Airways
Wed 3/48:00 amSYD - PDX
2 stops24h 25mQantas Airways
Deal found 12/16$1,254
This Delta deal was found by Cheapflights users on 12/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2711:59 amPDX - SYD
1 stop25h 31mDelta
Wed 3/410:40 amSYD - PDX
1 stop24h 30mDelta
Deal found 12/15$1,271
This United Airlines deal was found by Cheapflights users on 12/16. 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.
Mon 12/297:45 pmPDX - SYD
1 stop39h 35mUnited Airlines
Tue 1/1311:50 amSYD - PDX
1 stop30h 03mUnited Airlines
Deal found 12/16$1,279
This FlightHub deal was found by Cheapflights users on 12/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/318:00 pmSEA - SYD
2 stops26h 40mMultiple Airlines
Tue 2/108:00 amSYD - SEA
2 stops20h 15mMultiple Airlines
Deal found 12/15$1,296
This oojo deal was found by Cheapflights users on 12/15. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/256:20 amPDX - SYD
2 stops32h 00mQantas Airways
Sun 1/119:55 pmSYD - PDX
2 stops41h 39mQantas Airways
Deal found 12/15$1,388
This Air Canada deal was found by Cheapflights users on 12/16. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/288:00 pmSEA - SYD
1 stop18h 35mMultiple Airlines
Wed 1/77:05 amSYD - SEA
2 stops21h 10mMultiple Airlines
Deal found 12/16$1,398
This Delta deal was found by Cheapflights users on 12/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/251:30 pmPDX - SYD
1 stop24h 00mDelta
Sun 1/1110:40 amSYD - PDX
1 stop21h 55mDelta
Deal found 12/16$1,412
This United Airlines deal was found by Cheapflights users on 12/15. 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 12/257:45 pmPDX - SYD
1 stop39h 35mUnited Airlines
Sun 1/1112:10 pmSYD - PDX
1 stop21h 38mUnited Airlines
Deal found 12/15$1,420
This Kiwi.com deal was found by Cheapflights users on 12/15. 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 12/306:00 amSEA - SYD
1 stop30h 25mMultiple Airlines
Tue 1/68:40 pmSYD - SEA
2 stops41h 09mMultiple Airlines
Deal found 12/15$1,535

Find flight deals from Washington to Sydney

Keep the following information in mind while searching for Washington to Sydney flight deals. Data was last updated December 16, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$879
(Delta)

One-way from

$388
(oojo)

Popular in

December

Cheapest in

August

Average price

$1,523
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. 15% potential increase in price ($189 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($42 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 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 December 16, 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

Fri 1/30

1:48 pm-9:15 am

2 stops24h 27m

Sydney Kingsford Smith

Fri 2/6

2:00 pm-7:16 pm

1 stop24h 16m

$879

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Tue 3/3

6:30 am-6:50 am

1 stop29h 20m

Sydney Kingsford Smith

Tue 3/10

1:15 pm-9:20 pm

1 stop26h 05m

$879

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Wed 3/4

9:20 am-8:30 am

2 stops28h 10m

Sydney Kingsford Smith

Tue 3/10

9:40 am-4:08 pm

2 stops24h 28m

$884

PortlandSydney

PDX - SYD

PDXSYD

Portland

Mon 12/29

6:20 am-9:00 am

1 stop31h 40m

Sydney Kingsford Smith

Tue 1/13

7:15 pm-1:35 pm

2 stops37h 20m

$1,013

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sat 4/18

8:00 pm-11:25 am

2 stops22h 25m

Sydney Kingsford Smith

Mon 5/11

6:00 am-9:15 am

2 stops20h 15m

$1,047

PascoSydney

PSC - SYD

PSCSYD

Pasco Tri Cities

Thu 2/5

3:18 pm-9:15 am

1 stop22h 57m

Sydney Kingsford Smith

Mon 2/9

2:00 pm-9:10 pm

1 stop26h 10m

$1,107

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 4/5

5:55 pm-6:35 am

1 stop19h 40m

Sydney Kingsford Smith

Wed 4/15

9:15 am-2:43 pm

1 stop22h 28m

$1,113

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Wed 1/14

7:00 am-7:00 am

1 stop29h 00m

Sydney Kingsford Smith

Wed 1/21

11:20 am-9:12 pm

2 stops28h 52m

$1,113

PortlandSydney

PDX - SYD

PDXSYD

Portland

Mon 1/19

3:50 pm-9:15 am

1 stop22h 25m

Sydney Kingsford Smith

Wed 1/28

2:00 pm-10:44 pm

1 stop27h 44m

$1,113

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sat 1/31

7:00 pm-6:50 am

2 stops40h 50m

Sydney Kingsford Smith

Mon 2/16

2:15 pm-4:48 pm

2 stops21h 33m

$1,118

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 49 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 $513). Flying from State of Washington to Sydney in December is currently the most expensive (average of $845). 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 December 16, 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 24h 27m. Fly via United Airlines, Delta, or Qantas Airways to get the fastest option. Airlines will cover a distance of 7951 mi. This flight may include one or multiple stops.

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

    $253 is the cheapest one-way deal found within the past few days, from ANA. You may also be able to find cheap deals on Air Canada and Qantas Airways, with prices starting from $366 and $380, 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 $513). Flying from State of Washington to Sydney in December is currently the most expensive (average of $845). 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 9 airlines flying from Washington to Sydney

Discover the top 9 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 December 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
ANACheapest$583Average$615FlexibilityNo cancel feeOn-time80%
Alaska AirlinesCheapest$591Average$1,183FlexibilityNo cancel feeOn-time75%
Philippine AirlinesCheapest$758Average$921FlexibilityNo cancel feeOn-time60%
Air CanadaCheapest$779Average$1,050FlexibilityNo cancel feeOn-time67%
Qantas AirwaysCheapest$789Average$894FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$804Average$976FlexibilityNo cancel feeOn-time71%
Hawaiian AirlinesCheapest$813Average$1,155FlexibilityNo cancel feeOn-time85%
United AirlinesCheapest$831Average$1,125FlexibilityNo cancel feeOn-time69%
DeltaCheapest$842Average$1,198FlexibilityNo cancel feeOn-timeN/A

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