HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Australia

$454+ 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 2/22. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SYD
Dec 24 — Dec 311
Tue 12/24
Tue 12/31
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to Australia with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 December 19, 2024.

Round-trip from

$902
(CheapOair)

One-way from

$454
(Kiwi.com)
From Seattle/Tacoma Intl to Australia
Search Deals
One-way flight from Seattle/Tacoma Intl to Australia
Search Deals

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 December 19, 2024.

This United Airlines deal was found by Cheapflights users on 12/18. 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.
Tue 12/246:13 pmSEA - SYD
1 stop41h 07mUnited Airlines
Fri 1/312:10 pmSYD - SEA
1 stop28h 05mUnited Airlines
Deal found 12/18$1,424
This Kiwi.com deal was found by Cheapflights users on 12/18. 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 12/245:49 pmSEA - MEL
1 stop27h 31mMultiple Airlines
Tue 12/311:40 pmMEL - SEA
2 stops34h 30mMultiple Airlines
Deal found 12/18$1,645
This FlightHub deal was found by Cheapflights users on 12/18. 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.
Sun 12/293:05 pmSEA - SYD
2 stops35h 40mMultiple Airlines
Wed 1/87:05 amSYD - SEA
2 stops30h 25mMultiple Airlines
Deal found 12/18$1,786
This United deal was found by Cheapflights users on 12/18. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/3012:32 pmSEA - MEL
1 stop26h 28mUnited Airlines
Mon 1/2011:30 amMEL - SEA
2 stops28h 50mUnited Airlines
Deal found 12/18$1,789
This oojo deal was found by Cheapflights users on 12/18. 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.
Fri 12/2712:45 pmSEA - SYD
1 stop24h 35mAsiana Airlines
Sat 2/810:20 amSYD - SEA
1 stop43h 35mAsiana Airlines
Deal found 12/18$1,955
This United Airlines deal was found by Cheapflights users on 12/18. 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.
Fri 12/206:13 pmSEA - BNE
1 stop19h 17mUnited Airlines
Sun 1/511:40 amBNE - SEA
2 stops42h 34mUnited Airlines
Deal found 12/18$2,109
This Kiwi.com deal was found by Cheapflights users on 12/17. 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 12/3112:10 amSEA - PER
2 stops57h 15mMultiple Airlines
Fri 3/2810:45 pmPER - SEA
1 stop28h 55mMultiple Airlines
Deal found 12/17$2,264
This oojo deal was found by Cheapflights users on 12/18. 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.
Fri 12/276:13 pmSEA - SYD
1 stop20h 02mAir New Zealand
Sat 2/87:15 pmSYD - SEA
2 stops45h 45mAir New Zealand
Deal found 12/18$2,394
This Kiwi.com deal was found by Cheapflights users on 12/18. 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 12/254:05 pmSEA - ADL
1 stop30h 30mMultiple Airlines
Wed 1/158:20 amADL - SEA
2 stops40h 30mMultiple Airlines
Deal found 12/18$2,470
This oojo deal was found by Cheapflights users on 12/18. 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.
Sun 12/2912:10 amSEA - MEL
1 stop40h 55mChina Airlines
Sun 1/1912:35 amMEL - SEA
1 stop36h 40mChina Airlines
Deal found 12/18$2,518
This Mytrip deal was found by Cheapflights users on 12/17. 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.
Mon 12/3010:35 amSEA - AVV
3 stops34h 10mMultiple Airlines
Wed 1/86:00 amAVV - SEA
2 stops31h 10mMultiple Airlines
Deal found 12/17$2,638
This oojo deal was found by Cheapflights users on 12/18. 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.
Mon 12/305:42 pmSEA - MEL
2 stops47h 48mCathay Pacific
Sun 1/1912:45 amMEL - SEA
2 stops49h 28mCathay Pacific
Deal found 12/18$2,691

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 December 19, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 2/2

7:05 pm-4:40 pm

2 stops26h 35m

Sydney Kingsford Smith

Wed 2/12

11:20 am-2:30 pm

1 stop22h 10m

$902

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 2/2

7:05 pm-4:40 pm

2 stops26h 35m

Sydney Kingsford Smith

Mon 2/10

11:20 am-9:50 am

1 stop17h 30m

$905

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Wed 5/7

11:30 pm-9:55 am

1 stop41h 25m

Brisbane

Wed 5/28

11:15 am-7:20 pm

1 stop25h 05m

$982

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Wed 3/5

10:35 pm-9:30 am

1 stop39h 55m

Sydney Kingsford Smith

Wed 3/19

11:10 am-7:10 pm

1 stop26h 00m

$997

SeattleCairns

SEA - CNS

SEACNS

Seattle/Tacoma Intl

Sun 2/2

7:05 pm-5:10 pm

2 stops28h 05m

Cairns

Sun 2/9

6:00 am-9:50 am

2 stops21h 50m

$1,009

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Sun 2/2

10:35 am-8:40 am

1 stop28h 05m

Brisbane

Sun 2/9

10:45 am-9:50 am

1 stop17h 05m

$1,018

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Sun 2/2

7:05 pm-12:35 pm

2 stops23h 30m

Brisbane

Sun 2/9

10:45 am-2:30 pm

1 stop21h 45m

$1,045

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Tue 5/20

4:40 pm-9:25 am

1 stop23h 45m

Sydney Kingsford Smith

Tue 6/17

8:55 pm-2:25 pm

1 stop34h 30m

$1,085

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 2/10

2:00 pm-8:35 am

1 stop23h 35m

Sydney Kingsford Smith

Mon 3/3

2:15 pm-11:31 pm

1 stop28h 16m

$1,121

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 1/27

7:00 am-7:00 am

1 stop29h 00m

Sydney Kingsford Smith

Tue 3/4

4:15 pm-6:29 pm

1 stop21h 14m

$1,131

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/18

Showing 1-10 of 60 results
1
2
3
...
6

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 December 19, 2024.

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 December 19, 2024.
Read reviews from past customers who have flown Qantas Airways, Korean Air and Philippine 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
8.6
Very good
65 reviews

Boarding

8.5

Comfort

8.0

Entertainment

7.2

Crew

8.9

Overall

8.6

Food

7.7

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
8.6
Very good
65 reviews
Air Tahiti Nui
8.6
Very good
65 reviews

Boarding

8.5

Comfort

8.0

Entertainment

7.2

Crew

8.9

Overall

8.6

Food

7.7

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
1,272 reviews
Air Tahiti Nui
8.6
Very good
65 reviews

Boarding

8.5

Comfort

8.0

Entertainment

7.2

Crew

8.9

Overall

8.6

Food

7.7

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
839 reviews
Air Tahiti Nui
8.6
Very good
65 reviews

Boarding

8.5

Comfort

8.0

Entertainment

7.2

Crew

8.9

Overall

8.6

Food

7.7

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
8.4
Very good
1,021 reviews
Air Tahiti Nui
8.6
Very good
65 reviews

Boarding

8.5

Comfort

8.0

Entertainment

7.2

Crew

8.9

Overall

8.6

Food

7.7

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.

Asiana Airlines
8.3
Very good
477 reviews
Air Tahiti Nui
8.6
Very good
65 reviews

Boarding

8.5

Comfort

8.0

Entertainment

7.2

Crew

8.9

Overall

8.6

Food

7.7

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?

    $598 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 Air Canada and Cathay Pacific, with prices starting from $621 and $696, 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to Australia

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to Sydney flights
Seattle to Auckland flights
Seattle to Melbourne flights
Seattle to Brisbane flights
Portland to Auckland flights
Portland to Sydney flights
Seattle to Papeete flights
Portland to Melbourne flights
Seattle to Nadi flights
Seattle to Vaitape flights
Seattle to Avalon flights
Portland to Papeete flights
Seattle to Perth flights
Seattle to Christchurch flights
Seattle to Tamuning flights
Spokane to Auckland flights
Seattle to Rarotonga flights
Portland to Christchurch flights
Seattle to Queenstown flights
Portland to Brisbane flights
Seattle to Cairns flights
Seattle to Koror flights
Seattle to Wellington flights
Seattle to Pago Pago flights
Portland to Nadi flights
Portland to Vaitape flights
Portland to Avalon flights
Seattle to Adelaide flights
Portland to Queenstown flights
Seattle to Canberra flights
Seattle to Hobart flights
Portland to Adelaide flights
Seattle to Coolangatta flights
Portland to Tamuning flights
Spokane to Sydney flights
Seattle to Labasa flights
Portland to Rarotonga flights
Portland to Perth flights
Spokane to Papeete flights
Seattle to Maroochydore flights
Portland to Wellington flights
Seattle to Suva flights
Seattle to Apia flights
Portland to Port Vila flights
Seattle to Port Vila flights
Seattle to Rotorua flights
Seattle to I Fadang flights
Seattle to Darwin flights

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 December 19, 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$759Average$1,386FlexibilityNo cancel feeOn-time69%
ANACheapest$767Average$1,433FlexibilityNo cancel feeOn-time80%
Air CanadaCheapest$796Average$1,220FlexibilityNo cancel feeOn-time67%
Qantas AirwaysCheapest$836Average$1,538FlexibilityNo cancel feeOn-time74%
DeltaCheapest$838Average$1,132FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$839Average$1,264FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$863Average$1,307FlexibilityNo cancel feeOn-time71%
Hawaiian AirlinesCheapest$881Average$1,127FlexibilityNo cancel feeOn-time85%
Singapore AirlinesCheapest$1,199Average$1,586FlexibilityNo cancel feeOn-time81%
Air New ZealandCheapest$1,202Average$1,432FlexibilityNo cancel feeOn-time78%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.