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$414+ 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 2/27. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SYD
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
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 January 29, 2026.

This Expedia deal was found by Cheapflights users on 1/28. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/64:30 pm
SEA
-
SYD
1 stop33h 45m
ANA
Wed 5/2711:50 am
SYD
-
SEA
2 stops23h 40m
ANA
Deal found 1/28$796
This Expedia deal was found by Cheapflights users on 1/28. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/254:30 pm
SEA
-
SYD
1 stop33h 45m
ANA
Sun 5/318:55 pm
SYD
-
SEA
1 stop34h 30m
ANA
Deal found 1/28$802
This Expedia deal was found by Cheapflights users on 1/28. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/174:30 pm
SEA
-
SYD
1 stop23h 55m
ANA
Thu 5/2811:50 am
SYD
-
SEA
2 stops25h 58m
ANA
Deal found 1/28$853
This Expedia deal was found by Cheapflights users on 1/28. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/194:30 pm
SEA
-
SYD
1 stop23h 55m
ANA
Sat 10/3112:25 pm
SYD
-
SEA
2 stops24h 01m
ANA
Deal found 1/28$881
This Trip.com deal was found by Cheapflights users on 1/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/115:50 pm
SEA
-
SYD
2 stops24h 45m
Multiple Airlines
Mon 3/236:00 am
SYD
-
SEA
2 stops35h 40m
Multiple Airlines
Deal found 1/28$893
This Trip.com deal was found by Cheapflights users on 1/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/64:50 pm
SEA
-
SYD
2 stops24h 45m
Multiple Airlines
Mon 3/92:00 pm
SYD
-
SEA
2 stops24h 58m
Multiple Airlines
Deal found 1/28$939
This KAYAK deal was found by Cheapflights users on 1/28. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/104:30 pm
SEA
-
SYD
1 stop33h 45m
ANA
Tue 5/268:55 pm
SYD
-
SEA
1 stop34h 30m
ANA
Deal found 1/28$949
This Trip.com deal was found by Cheapflights users on 1/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1010:44 am
SEA
-
SYD
2 stops31h 51m
Multiple Airlines
Mon 3/302:15 pm
SYD
-
SEA
2 stops26h 27m
Multiple Airlines
Deal found 1/28$953
This oojo deal was found by Cheapflights users on 1/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/45:53 pm
SEA
-
SYD
2 stops28h 47m
Qantas Airways
Wed 2/1111:20 am
SYD
-
SEA
1 stop20h 09m
Qantas Airways
Deal found 1/28$957
This Expedia deal was found by Cheapflights users on 1/28. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/54:30 pm
SEA
-
SYD
1 stop23h 55m
ANA
Tue 9/2211:50 am
SYD
-
SEA
2 stops26h 00m
ANA
Deal found 1/28$960
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 2/237:16 pm
PDX
-
SYD
1 stop41h 09m
Multiple Airlines
Fri 3/62:00 pm
SYD
-
PDX
2 stops39h 56m
Multiple Airlines
Deal found 1/28$961
This oojo deal was found by Cheapflights users on 1/26. 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 9/105:47 pm
GEG
-
SYD
1 stop20h 18m
Multiple Airlines
Thu 9/175:50 pm
SYD
-
GEG
1 stop21h 35m
Multiple Airlines
Deal found 1/26$965

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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$796
(Expedia)

One-way from

$414
(Trip.com)

Popular in

December

Cheapest in

August

Average price

$1,290
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. 16% potential increase in price ($200 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($49 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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 January 29, 2026.
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

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 5/25

4:30 pm-7:15 pm

1 stop33h 45m

Sydney Kingsford Smith

Sun 5/31

11:50 am-6:30 pm

2 stops23h 40m

$908

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Tue 3/3

3:45 pm-6:10 am

1 stop19h 25m

Sydney Kingsford Smith

Tue 3/10

1:05 pm-4:54 pm

1 stop21h 49m

$969

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Tue 2/10

4:59 pm-6:10 am

1 stop18h 11m

Sydney Kingsford Smith

Fri 2/13

2:05 pm-9:12 pm

1 stop26h 07m

$972

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Fri 2/20

3:45 pm-6:10 am

1 stop19h 25m

Sydney Kingsford Smith

Fri 3/6

5:45 pm-10:46 pm

1 stop24h 01m

$975

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Tue 2/10

6:00 am-6:55 am

1 stop29h 55m

Sydney Kingsford Smith

Fri 2/13

5:45 pm-11:14 pm

2 stops24h 29m

$977

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Tue 6/16

3:00 pm-7:30 am

2 stops23h 30m

Sydney Kingsford Smith

Wed 6/24

12:00 pm-8:47 pm

1 stop25h 47m

$977

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Fri 7/3

3:00 pm-7:30 am

2 stops23h 30m

Sydney Kingsford Smith

Tue 7/7

12:00 pm-8:47 pm

1 stop25h 47m

$977

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Fri 2/20

1:20 pm-8:30 am

2 stops24h 10m

Sydney Kingsford Smith

Fri 3/6

10:40 am-9:18 pm

1 stop29h 38m

$983

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Tue 3/3

6:25 am-6:50 am

1 stop29h 25m

Sydney Kingsford Smith

Tue 3/10

1:15 pm-9:20 pm

1 stop26h 05m

$988

PortlandSydney

PDX - SYD

PDXSYD

Portland

Mon 2/23

5:39 pm-9:10 am

2 stops44h 31m

Sydney Kingsford Smith

Mon 3/2

11:20 am-5:13 pm

1 stop24h 53m

$989

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

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.

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 19h 25m. Fly via ANA, Qantas Airways, or American Airlines 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

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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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$491Average$1,339FlexibilityNo cancel feeOn-timeN/A
ANACheapest$583Average$615FlexibilityNo cancel feeOn-time80%
Alaska AirlinesCheapest$591Average$1,179FlexibilityNo cancel feeOn-time75%
Philippine AirlinesCheapest$758Average$880FlexibilityNo cancel feeOn-time60%
Air CanadaCheapest$779Average$1,059FlexibilityNo cancel feeOn-time67%
Qantas AirwaysCheapest$789Average$895FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$804Average$976FlexibilityNo cancel feeOn-time71%
Hawaiian AirlinesCheapest$812Average$1,159FlexibilityNo cancel feeOn-time85%
United AirlinesCheapest$830Average$1,063FlexibilityNo cancel feeOn-time69%

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