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$467+ Cheap flights from Australia to Seattle (SEA)

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 7/30. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — SEA
May 17 — May 241
Sun 5/17
Sun 5/24
1 adult, Economy
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Cheap flight deals from Australia to Seattle

Cheapest flights from Australia to Seattle
Explore the most affordable flight options available from Australia to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2026.

This United Airlines deal was found by Cheapflights users on 4/14. 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 6/910:55 am
MEL
-
SEA
2 stops30h 04m
United Airlines
Tue 6/231:30 pm
SEA
-
MEL
1 stop25h 45m
United Airlines
Deal found 4/14$920
This United Airlines deal was found by Cheapflights users on 4/12. 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.
Sun 5/310:55 am
MEL
-
SEA
2 stops41h 44m
United Airlines
Sat 5/2310:40 pm
SEA
-
MEL
2 stops63h 50m
United Airlines
Deal found 4/12$921
This United Airlines deal was found by Cheapflights users on 4/15. 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.
Tue 5/510:55 am
MEL
-
SEA
2 stops45h 53m
United Airlines
Sat 5/235:00 pm
SEA
-
MEL
2 stops69h 30m
United Airlines
Deal found 4/15$927
This United Airlines deal was found by Cheapflights users on 4/13. 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 5/710:55 am
MEL
-
SEA
1 stop18h 30m
United Airlines
Thu 5/141:21 pm
SEA
-
MEL
1 stop25h 54m
United Airlines
Deal found 4/13$928
This Delta deal was found by Cheapflights users on 4/12. 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 5/310:00 am
MEL
-
SEA
1 stop19h 37m
Delta
Sun 5/109:20 pm
SEA
-
MEL
1 stop41h 30m
Delta
Deal found 4/12$929
This United Airlines deal was found by Cheapflights users on 4/16. 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 5/1110:55 am
MEL
-
SEA
1 stop27h 11m
United Airlines
Fri 5/223:33 pm
SEA
-
MEL
1 stop23h 42m
United Airlines
Deal found 4/16$931
This Aunt Betty deal was found by Cheapflights users on 4/13. 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 Aunt Betty is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/286:00 am
MEL
-
SEA
2 stops21h 05m
Multiple Airlines
Thu 6/47:20 pm
SEA
-
MEL
2 stops22h 45m
Multiple Airlines
Deal found 4/13$941
This Delta deal was found by Cheapflights users on 4/14. 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.
Tue 5/59:15 am
SYD
-
SEA
2 stops22h 31m
Delta
Tue 5/1210:50 am
SEA
-
SYD
2 stops27h 00m
Delta
Deal found 4/14$967
This Delta deal was found by Cheapflights users on 4/15. 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.
Wed 5/1310:00 am
MEL
-
SEA
1 stop27h 30m
Delta
Thu 5/289:20 pm
SEA
-
MEL
1 stop41h 30m
Delta
Deal found 4/15$974
This Delta deal was found by Cheapflights users on 4/14. 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.
Tue 5/129:15 am
SYD
-
SEA
1 stop24h 38m
Delta
Tue 5/1910:15 am
SEA
-
SYD
1 stop27h 35m
Delta
Deal found 4/14$974
This Bravofly deal was found by Cheapflights users on 4/17. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/19:10 am
SYD
-
SEA
1 stop29h 39m
Qantas Airways
Mon 6/86:14 pm
SEA
-
SYD
1 stop19h 51m
Qantas Airways
Deal found 4/17$975
This BYOjet deal was found by Cheapflights users on 4/14. 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 BYOjet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/121:15 pm
SYD
-
SEA
2 stops22h 25m
Multiple Airlines
Wed 5/275:59 pm
SEA
-
SYD
2 stops24h 51m
Multiple Airlines
Deal found 4/14$1,007

Find flight deals from Australia to Seattle

Keep the following information in mind while searching for Australia to Seattle flight deals. Data was last updated April 17, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$920
(United Airlines)

One-way from

$467
(Kiwi.com)

Popular in

July

Cheapest in

September

Average price

$1,095
Provider with most accurate pricing for Sydney Kingsford Smith-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Sydney Kingsford Smith-Seattle/Tacoma Intl flights.
Search Deals
From Australia to Seattle/Tacoma Intl
Search Deals
One-way flight from Australia to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($65 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Australia to Seattle 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 April 17, 2026.
Use the filters below to find and compare flights from Australia to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Fri 5/29

10:55 am-7:03 pm

1 stop25h 08m

Seattle/Tacoma Intl

Wed 6/24

5:04 pm-7:30 am

1 stop21h 26m

$921

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Thu 5/7

10:55 am-9:06 pm

2 stops27h 11m

Seattle/Tacoma Intl

Sat 5/23

5:00 pm-7:30 am

2 stops69h 30m

$921

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Sat 5/30

10:55 am-8:00 am

2 stops38h 05m

Seattle/Tacoma Intl

Sat 6/6

5:00 pm-8:15 am

2 stops46h 15m

$927

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Tue 5/5

10:55 am-2:36 pm

1 stop20h 41m

Seattle/Tacoma Intl

Sat 5/23

5:00 pm-7:30 am

2 stops69h 30m

$927

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Thu 5/7

10:55 am-6:32 pm

1 stop24h 37m

Seattle/Tacoma Intl

Thu 5/14

1:21 pm-8:15 am

1 stop25h 54m

$928

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Wed 5/13

10:00 am-4:44 pm

2 stops23h 44m

Seattle/Tacoma Intl

Thu 5/28

5:45 pm-7:50 am

2 stops45h 05m

$974

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Tue 5/12

9:15 am-4:53 pm

1 stop24h 38m

Seattle/Tacoma Intl

Tue 5/19

7:25 am-6:50 am

1 stop30h 25m

$978

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 5/6

9:15 am-12:25 pm

2 stops20h 10m

Seattle/Tacoma Intl

Sat 5/16

7:15 am-6:50 am

2 stops30h 35m

$1,024

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 5/27

9:10 am-1:37 pm

1 stop21h 27m

Seattle/Tacoma Intl

Wed 6/3

10:27 am-7:05 am

2 stops27h 38m

$1,077

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Tue 4/28

9:15 am-2:51 pm

1 stop22h 36m

Seattle/Tacoma Intl

Sat 5/30

9:20 pm-6:50 am

1 stop40h 30m

$1,100

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/13

Showing 1-10 of 60 resultsSorted by cheapest first
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6

Best time to book a flight from Australia to Seattle

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

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

Currently, December is the cheapest month in which you can book a flight from Australia to Seattle (average of $427). Flying from Australia to Seattle in April is currently the most expensive (average of $755). 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.

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated April 17, 2026.
Get a feel of what it's like to fly with Delta,United Airlines, andAir Canada from Australia to Seattle by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,409 reviews

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Crew

8.5

Overall

7.9

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,409 reviews
Delta
7.9
Good
8,409 reviews

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Crew

8.5

Overall

7.9

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,601 reviews
Delta
7.9
Good
8,409 reviews

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Crew

8.5

Overall

7.9

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Air Canada
7.1
Good
10,932 reviews
Delta
7.9
Good
8,409 reviews

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Crew

8.5

Overall

7.9

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Australia to Seattle. 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 Seattle from Australia?

    Most people fly into Seattle/Tacoma Intl (SEA) if they book a flight to Seattle from Australia. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.

  • How long is the flight from Australia to Seattle?

    United Airlines, Delta, and Qantas Airways can get you from Australia to Seattle in just under 22h 31m. Your travel time can differ by up to 3h 52m. The distance between Australia and Seattle is about 7744 mi. This flight may include one or multiple stops.

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

    For one-way options, check prices for United Airlines. According to our data, you can fly for as low as $379. Users have also found prices from $421 and $437 on Air Canada and Hawaiian Airlines, respectively.

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

    Most travelers choose Melbourne - Seattle/Tacoma Intl, Sydney Kingsford Smith - Seattle/Tacoma Intl or Melbourne Avalon - Seattle/Tacoma Intl when deciding on the best route from Australia to Seattle.

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

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

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

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

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

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

    Currently, December is the cheapest month in which you can book a flight from Australia to Seattle (average of $427). Flying from Australia to Seattle in April is currently the most expensive (average of $755). 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 Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Tacoma
Ocean Shores
Olympia
Lynnwood
Lacey
Kent
Edmonds
Leavenworth
Snoqualmie
Tumwater
Tukwila
Renton
Puyallup
Kirkland
Ellensburg
Fife
Lakewood
Issaquah
Shoreline

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from Australia to Seattle

Discover the top 3 airlines that operate flights from Australia to Seattle. 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 April 17, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$431Average$1,062FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$754Average$1,022FlexibilityNo cancel feeOn-time69%
DeltaCheapest$939Average$1,391FlexibilityNo cancel feeOn-timeN/A

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