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$402+ Cheap flights from Seattle (SEA) 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 3/18. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SYD
Jan 25 — Feb 11
Sat 1/25
Sat 2/1
1 adult, Economy
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Cheap flight deals from Seattle to Australia

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Australia (AU0). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 20, 2025.

Round-trip from

$817
(American Airlines)

One-way from

$409
(Trip.com)
From Seattle/Tacoma Intl to Australia
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One-way flight from Seattle/Tacoma Intl to Australia
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Find flight deals from Seattle to Australia

Cheapest flights from Seattle to Australia
Explore the most affordable flight options available from Seattle to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 20, 2025.

This American Airlines deal was found by Cheapflights users on 1/20. 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.
Wed 3/127:00 amSEA - BNE
1 stop29h 30mAmerican Airlines
Fri 3/218:05 amBNE - SEA
1 stop30h 05mAmerican Airlines
Deal found 1/20$817
This Mytrip deal was found by Cheapflights users on 1/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/512:41 pmSEA - BNE
3 stops27h 39mMultiple Airlines
Wed 3/1211:20 amBNE - SEA
2 stops24h 42mMultiple Airlines
Deal found 1/20$856
This United Airlines deal was found by Cheapflights users on 1/20. 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.
Wed 3/1212:55 pmSEA - BNE
2 stops24h 35mUnited Airlines
Fri 3/2110:40 amBNE - SEA
1 stop27h 35mUnited Airlines
Deal found 1/20$860
This Mytrip deal was found by Cheapflights users on 1/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/512:41 pmSEA - SYD
3 stops28h 49mMultiple Airlines
Wed 3/126:00 amSYD - SEA
2 stops31h 02mMultiple Airlines
Deal found 1/20$887
This Air Canada deal was found by Cheapflights users on 1/20. 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 2/27:05 pmSEA - SYD
2 stops26h 35mAir Canada
Wed 2/129:00 amSYD - SEA
2 stops24h 30mAir Canada
Deal found 1/20$895
This Flightnetwork deal was found by Cheapflights users on 1/19. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/43:45 pmSEA - SYD
1 stop33h 30mANA
Tue 3/119:45 pmSYD - SEA
1 stop34h 35mANA
Deal found 1/19$902
This American Airlines deal was found by Cheapflights users on 1/19. 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.
Wed 3/127:26 pmSEA - SYD
1 stop19h 34mAmerican Airlines
Wed 3/2611:15 amSYD - SEA
1 stop25h 41mAmerican Airlines
Deal found 1/19$917
This Delta deal was found by Cheapflights users on 1/20. 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.
Sun 2/169:40 pmSEA - BNE
2 stops40h 05mDelta
Fri 2/2810:45 amBNE - SEA
1 stop27h 59mDelta
Deal found 1/20$918
This Air Canada deal was found by Cheapflights users on 1/20. 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 2/93:05 pmSEA - CBR
2 stops31h 45mAir Canada
Wed 2/196:40 amCBR - SEA
2 stops26h 50mAir Canada
Deal found 1/20$938
This Kissandfly.com deal was found by Cheapflights users on 1/20. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/67:00 amSEA - SYD
1 stop17h 45mHawaiian Airlines
Thu 3/139:40 pmSYD - SEA
1 stop19h 50mHawaiian Airlines
Deal found 1/20$943
This Justfly.com deal was found by Cheapflights users on 1/20. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/87:05 pmSEA - BNE
1 stop19h 35mAir Canada
Sun 2/1610:45 amBNE - SEA
1 stop21h 45mAir Canada
Deal found 1/20$968
This Trip.com deal was found by Cheapflights users on 1/20. 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 3/412:45 pmSEA - PER
2 stops35h 50mMultiple Airlines
Tue 3/119:30 pmPER - SEA
2 stops53h 25mMultiple Airlines
Deal found 1/20$978

Find flights from Seattle to Australia within your budget

Customize your flight search to find flights from Seattle 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 January 20, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Tue 3/4

10:24 am-6:15 am

1 stop25h 51m

Brisbane

Tue 3/11

8:05 am-1:00 pm

1 stop21h 55m

$817

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Wed 3/5

1:44 pm-10:20 am

2 stops26h 36m

Brisbane

Wed 3/12

11:20 am-8:25 pm

2 stops26h 05m

$853

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Tue 3/4

12:46 pm-7:30 am

2 stops24h 44m

Brisbane

Tue 3/11

10:40 am-3:54 pm

1 stop22h 14m

$860

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Wed 3/5

12:46 pm-7:30 am

2 stops24h 44m

Brisbane

Wed 3/12

10:40 am-3:54 pm

1 stop22h 14m

$872

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Wed 3/5

12:41 pm-12:30 pm

3 stops28h 49m

Sydney Kingsford Smith

Wed 3/12

6:00 am-7:02 pm

2 stops31h 02m

$887

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 2/2

3:05 pm-2:40 pm

2 stops28h 35m

Sydney Kingsford Smith

Wed 2/12

9:00 am-9:57 am

2 stops19h 57m

$895

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Tue 3/4

3:45 pm-8:15 pm

1 stop33h 30m

Sydney Kingsford Smith

Tue 3/11

9:45 pm-2:20 pm

1 stop34h 35m

$902

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Wed 3/12

7:26 pm-9:00 am

1 stop19h 34m

Sydney Kingsford Smith

Sun 3/23

11:15 am-6:56 pm

1 stop25h 41m

$917

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Sun 2/16

9:40 pm-7:45 am

2 stops40h 05m

Brisbane

Fri 2/28

10:45 am-12:50 am

2 stops32h 05m

$918

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 3/10

7:45 am-7:45 pm

1 stop18h 00m

Sydney Kingsford Smith

Thu 4/24

9:40 pm-6:15 am

1 stop25h 35m

$933

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/18

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

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

Travel insights for flights from Seattle to Australia

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

What is the cheapest month to book a flight from Seattle to Australia?

Currently, February is the cheapest month in which you can book a flight from Seattle to Australia (average of $1,051). Flying from Seattle to Australia in December is currently the most expensive (average of $1,643). 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 SEA to AU?

Find hourly flight availability from Seattle 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 January 20, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Australia as you normally would.

Rainfall in Australia by month

Plan your trip to Australia by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Australia ranges from 2.0 - 5.1 inches per month. March is typically the wettest month, when rainfall can reach 5.1 in. September is typically the driest time to visit Australia when rainfall is around 2.0 in.

Temperature in Australia by month

Plan your trip to Australia by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Australia, 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 71.6 F. Travelers looking to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 51.8 F).

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 January 20, 2025.
Read reviews from past customers who have flown Delta, United Airlines and China Airlines from Seattle to Australia. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Tahiti Nui
8.8
Very good
62 reviews

Boarding

8.7

Crew

9.1

Comfort

8.1

Overall

8.8

Entertainment

7.3

Food

7.8

Reviews

1 / 2

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
8.8
Very good
62 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Boarding

8.7

Crew

9.1

Comfort

8.1

Overall

8.8

Entertainment

7.3

Food

7.8

Reviews

1 / 2

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.

Korean Air
8.5
Very good
1,039 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Boarding

8.7

Crew

9.1

Comfort

8.1

Overall

8.8

Entertainment

7.3

Food

7.8

Reviews

1 / 2

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
1,255 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Boarding

8.7

Crew

9.1

Comfort

8.1

Overall

8.8

Entertainment

7.3

Food

7.8

Reviews

1 / 2

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
852 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Boarding

8.7

Crew

9.1

Comfort

8.1

Overall

8.8

Entertainment

7.3

Food

7.8

Reviews

1 / 2

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.

Japan Airlines
8.3
Very good
1,449 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Boarding

8.7

Crew

9.1

Comfort

8.1

Overall

8.8

Entertainment

7.3

Food

7.8

Reviews

1 / 2

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 Seattle to Australia. 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 from for flights from Seattle to Australia?

    If you book a flight to Australia from Seattle, you will be flying from Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 11.4 mi from the center of Seattle.

  • What are the cheapest airlines to fly from Seattle to Australia one-way?

    $463 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on American Airlines and Hawaiian Airlines, with prices starting from $492 and $562, respectively.

  • What are the most popular routes from Seattle to Australia?

    The most popular flight routes from Seattle to Australia are Seattle/Tacoma Intl - Sydney Kingsford Smith, Seattle/Tacoma Intl - Melbourne and Seattle/Tacoma Intl - Brisbane.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Seattle to Australia (average of $1,051). Flying from Seattle to Australia in December is currently the most expensive (average of $1,643). 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 Seattle 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 Seattle to Australia

Discover the top 10 airlines that operate flights from Seattle 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 January 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$759Average$1,380FlexibilityNo cancel feeOn-time69%
ANACheapest$767Average$1,325FlexibilityNo cancel feeOn-time80%
Air CanadaCheapest$796Average$1,198FlexibilityNo cancel feeOn-time67%
Qantas AirwaysCheapest$836Average$1,536FlexibilityNo cancel feeOn-time74%
DeltaCheapest$838Average$1,135FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$863Average$1,306FlexibilityNo cancel feeOn-time71%
Hawaiian AirlinesCheapest$881Average$1,131FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$911Average$1,263FlexibilityNo cancel feeOn-time75%
Singapore AirlinesCheapest$1,199Average$1,600FlexibilityNo cancel feeOn-time81%
Air New ZealandCheapest$1,202Average$1,441FlexibilityNo cancel feeOn-time78%
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