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$366+ Cheap flights from Washington to Australia

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 8/12. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SYD
jul. 8 — jul. 151
mar. 7/8
mar. 7/15
1 adult, Economy
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Cheap flight deals from Washington to Australia

Keep the following information in mind while searching for Washington to Australia flight deals. Data was last updated julio 3, 2025.

Round-trip from

$704
(SmartFares)

One-way from

$366
(Alaska Airlines)

Popular in

December

Cheapest in

March

Average price

$1,089
From Washington to Australia
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One-way flight from Washington to Australia
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Highest demand for flights based on searches. 10% potential increase in price ($137 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($31 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Washington to Australia

Cheapest flights from Washington to Australia
Explore the most affordable flight options available from Washington to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 3, 2025.

This SmartFares deal was found by Cheapflights users on 7/1. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/210:30 amPDX - SYD
1 stop27h 35mAlaska Airlines
vie. 8/159:10 amSYD - PDX
1 stop19h 21mAlaska Airlines
Deal found 7/1$704
This Alaska Airlines deal was found by Cheapflights users on 7/1. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/66:45 pmSEA - SYD
1 stop19h 20mAlaska Airlines
mié. 8/279:10 amSYD - SEA
1 stop18h 44mAlaska Airlines
Deal found 7/1$739
This Cheapflightsfares deal was found by Cheapflights users on 7/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/22:56 pmPDX - SYD
1 stop23h 09mQantas Airways
mar. 9/239:10 amSYD - PDX
1 stop24h 20mQantas Airways
Deal found 7/2$774
This BestPriceTravel deal was found by Cheapflights users on 7/1. 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 BestPriceTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/66:09 pmSEA - SYD
1 stop20h 21mQantas Airways
jue. 8/289:10 amSYD - SEA
1 stop29h 23mQantas Airways
Deal found 7/1$781
This Air Canada deal was found by Cheapflights users on 7/2. 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.
dom. 9/710:00 amSEA - SYD
1 stop28h 20mAir Canada
mar. 9/169:20 amSYD - SEA
1 stop21h 56mAir Canada
Deal found 7/2$788
This FlightHub deal was found by Cheapflights users on 7/2. 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.
vie. 9/57:40 pmPDX - SYD
1 stop18h 40mAir Canada
jue. 9/189:20 amSYD - PDX
1 stop17h 01mAir Canada
Deal found 7/2$798
This Flighttix deal was found by Cheapflights users on 7/3. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/86:45 amSEA - SYD
1 stop31h 15mUnited Airlines
jue. 8/219:30 amSYD - SEA
2 stops28h 24mUnited Airlines
Deal found 7/3$802
This American Airlines deal was found by Cheapflights users on 7/3. 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.
lun. 8/42:30 pmSEA - SYD
1 stop24h 00mAmerican Airlines
lun. 8/189:10 amSYD - SEA
2 stops24h 32mAmerican Airlines
Deal found 7/3$808
This Qantas Airways deal was found by Cheapflights users on 7/2. 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.
sáb. 8/25:59 pmSEA - SYD
1 stop20h 31mMultiple Airlines
dom. 8/249:30 pmSYD - SEA
1 stop17h 42mMultiple Airlines
Deal found 7/2$815
This United Airlines deal was found by Cheapflights users on 7/2. 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.
mar. 8/51:37 pmPDX - SYD
1 stop24h 18mUnited Airlines
mié. 8/2710:20 amSYD - PDX
1 stop21h 22mUnited Airlines
Deal found 7/2$824
This Delta deal was found by Cheapflights users on 7/2. 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.
vie. 8/812:35 pmPDX - SYD
1 stop25h 00mDelta
jue. 8/289:25 amSYD - PDX
1 stop19h 14mDelta
Deal found 7/2$832
This oojo deal was found by Cheapflights users on 7/3. 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.
mié. 9/311:35 pmSEA - MEL
1 stop36h 25mPhilippine Airlines
mié. 9/108:00 amMEL - SEA
1 stop28h 15mPhilippine Airlines
Deal found 7/3$906

Cheapflights Fare Finder

Customize your flight search to find flights from Washington to Australia 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 julio 3, 2025.
Use the filters below to find and compare flights from Washington to Australia that are best for you.

Fly from

Washington

Fly to

Australia

Route

Depart

Return

Price

PortlandSydney

PDX - SYD

PDXSYD

Portland

sáb. 8/2

10:30 am-7:05 am

1 stop27h 35m

Sydney Kingsford Smith

vie. 8/15

9:10 am-11:31 am

1 stop19h 21m

$704

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

mié. 8/6

6:45 pm-7:05 am

1 stop19h 20m

Sydney Kingsford Smith

mié. 8/27

9:10 am-10:54 am

1 stop18h 44m

$739

PortlandSydney

PDX - SYD

PDXSYD

Portland

mar. 9/2

2:56 pm-7:05 am

1 stop23h 09m

Sydney Kingsford Smith

mar. 9/23

5:45 pm-8:30 pm

1 stop19h 45m

$774

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

mié. 8/6

6:09 pm-7:30 am

1 stop20h 21m

Sydney Kingsford Smith

jue. 8/28

9:10 am-9:33 pm

1 stop29h 23m

$781

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

dom. 9/7

10:00 am-7:20 am

1 stop28h 20m

Sydney Kingsford Smith

mar. 9/16

9:20 am-2:16 pm

1 stop21h 56m

$788

PortlandSydney

PDX - SYD

PDXSYD

Portland

vie. 9/5

7:40 pm-7:20 am

1 stop18h 40m

Sydney Kingsford Smith

jue. 9/18

9:20 am-9:21 am

1 stop17h 01m

$798

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

vie. 8/8

6:45 am-7:00 am

1 stop31h 15m

Sydney Kingsford Smith

jue. 8/21

9:30 am-8:54 pm

2 stops28h 24m

$802

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

lun. 8/4

2:30 pm-7:30 am

1 stop24h 00m

Sydney Kingsford Smith

lun. 8/18

9:10 am-4:42 pm

2 stops24h 32m

$808

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

sáb. 8/2

5:59 pm-7:30 am

1 stop20h 31m

Sydney Kingsford Smith

dom. 8/24

9:30 pm-10:12 pm

1 stop17h 42m

$815

PortlandSydney

PDX - SYD

PDXSYD

Portland

mar. 8/5

12:55 pm-7:00 am

2 stops25h 05m

Sydney Kingsford Smith

vie. 8/29

10:20 am-12:43 pm

1 stop19h 23m

$824

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

Showing 1-10 of 60 results
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Best time to book a flight from Washington to Australia

Have a flexible travel schedule? Discover the best time to fly to Australia 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 Australia

What is the cheapest month to book a flight from State of Washington to Australia?

Currently, February is the cheapest month in which you can book a flight from State of Washington to Australia (average of $1,040). Flying from State of Washington to Australia in December is currently the most expensive (average of $1,630). 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 AU?

Find hourly flight availability from Washington to Australia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated julio 3, 2025.

When flying from State of Washington to Australia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Australia

Get insights into the airlines that provide service to Australia. 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 Australia. Reviews last updated julio 3, 2025.
Get a feel of what it's like to fly with Air Tahiti Nui, EVA Air, and ANA from Washington to Australia by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Tahiti Nui
8.7
Very good
64 reviews

Comfort

8.1

Crew

9.0

Boarding

8.7

Overall

8.7

Entertainment

7.3

Food

7.8

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
64 reviews
Air Tahiti Nui
8.7
Very good
64 reviews

Comfort

8.1

Crew

9.0

Boarding

8.7

Overall

8.7

Entertainment

7.3

Food

7.8

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.
EVA Air
8.4
Very good
1,215 reviews
Air Tahiti Nui
8.7
Very good
64 reviews

Comfort

8.1

Crew

9.0

Boarding

8.7

Overall

8.7

Entertainment

7.3

Food

7.8

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
893 reviews
Air Tahiti Nui
8.7
Very good
64 reviews

Comfort

8.1

Crew

9.0

Boarding

8.7

Overall

8.7

Entertainment

7.3

Food

7.8

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
744 reviews
Air Tahiti Nui
8.7
Very good
64 reviews

Comfort

8.1

Crew

9.0

Boarding

8.7

Overall

8.7

Entertainment

7.3

Food

7.8

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
8.2
Very good
452 reviews
Air Tahiti Nui
8.7
Very good
64 reviews

Comfort

8.1

Crew

9.0

Boarding

8.7

Overall

8.7

Entertainment

7.3

Food

7.8

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 Australia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    One-way options have recently been found by users for as low as $366 on Alaska Airlines. Other airlines that offer cheap prices include Qantas Airways from $385 and American Airlines from $389 one-way.

  • Can I find deals for flights from Washington to Australia that include hotel bookings?

    Yes. In addition to deals on Washington to Australia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington to Australia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Australia.

  • Can I find deals for business class flights from Washington to Australia?

    Yes. Cheapflights offers flight deals from Washington to Australia 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 Australia?

    Currently, February is the cheapest month in which you can book a flight from State of Washington to Australia (average of $1,040). Flying from State of Washington to Australia in December is currently the most expensive (average of $1,630). 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

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Alternative routes for Washington to Australia

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Washington to Australia

Discover the top 10 airlines that operate flights from Washington to Australia. 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 julio 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$647Average$1,274FlexibilityNo cancel feeOn-time74%
ANACheapest$794Average$1,085FlexibilityNo cancel feeOn-time80%
American AirlinesCheapest$807Average$1,162FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$833Average$1,194FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$844Average$1,278FlexibilityNo cancel feeOn-time69%
Hawaiian AirlinesCheapest$858Average$1,147FlexibilityNo cancel feeOn-time85%
DeltaCheapest$865Average$1,205FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$889Average$1,350FlexibilityNo cancel feeOn-time75%
Singapore AirlinesCheapest$1,251Average$1,552FlexibilityNo cancel feeOn-time81%
Qatar AirwaysCheapest$1,315Average$1,712FlexibilityNo cancel feeOn-time68%

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