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$503+ 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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — SEA
Nov 13 — Nov 201
Thu 11/13
Thu 11/20
1 adult, Economy
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Cheap flight deals from Australia to Seattle

Keep the following information in mind while searching for Australia to Seattle flight deals. Data was last updated October 14, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$780
(American Airlines)

One-way from

$503
(United Airlines)

Popular in

July

Cheapest in

August

Average price

$1,002
Provider with most accurate pricing for Sydney Kingsford Smith-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Sydney Kingsford Smith-Seattle/Tacoma Intl flights.
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From Australia to Seattle/Tacoma Intl
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One-way flight from Australia to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 1% potential increase in price ($16 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($25 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find 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 October 14, 2025.

This United Airlines deal was found by Cheapflights users on 10/14. 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.
Mon 12/2211:30 amMEL - SEA
2 stops28h 37mUnited Airlines
Thu 1/15:02 amSEA - MEL
2 stops33h 28mUnited Airlines
Deal found 10/14$797
This United Airlines deal was found by Cheapflights users on 10/14. 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.
Thu 12/1811:30 amMEL - SEA
2 stops28h 47mUnited Airlines
Mon 12/291:35 pmSEA - MEL
1 stop25h 25mUnited Airlines
Deal found 10/14$801
This United Airlines deal was found by Cheapflights users on 10/12. 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.
Tue 11/411:40 amBNE - SEA
2 stops25h 45mUnited Airlines
Tue 11/1110:53 amSEA - BNE
2 stops26h 37mUnited Airlines
Deal found 10/12$813
This American Airlines deal was found by Cheapflights users on 10/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/238:15 amMEL - SEA
2 stops29h 28mAmerican Airlines
Wed 12/316:30 amSEA - MEL
2 stops32h 00mAmerican Airlines
Deal found 10/14$814
This Delta deal was found by Cheapflights users on 10/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2110:40 amBNE - SEA
1 stop19h 59mDelta
Wed 12/39:30 amSEA - BNE
2 stops28h 50mDelta
Deal found 10/13$861
This United Airlines deal was found by Cheapflights users on 10/13. 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.
Sat 11/110:40 amBNE - SEA
2 stops28h 48mUnited Airlines
Sat 11/1511:59 pmSEA - BNE
2 stops37h 31mUnited Airlines
Deal found 10/13$862
This Gotogate deal was found by Cheapflights users on 10/14. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/149:40 pmSYD - SEA
1 stop26h 55mMultiple Airlines
Sat 11/293:40 pmSEA - SYD
1 stop33h 35mMultiple Airlines
Deal found 10/14$873
This Aunt Betty deal was found by Cheapflights users on 10/13. 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.
Sat 11/110:35 pmBNE - SEA
1 stop37h 35mEVA Air
Sat 11/1511:30 pmSEA - BNE
1 stop26h 50mEVA Air
Deal found 10/13$895
This Aunt Betty deal was found by Cheapflights users on 10/13. 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.
Mon 11/102:00 pmSYD - SEA
2 stops23h 57mMultiple Airlines
Tue 11/252:35 pmSEA - SYD
2 stops26h 55mMultiple Airlines
Deal found 10/13$909
This Delta deal was found by Cheapflights users on 10/14. 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.
Fri 11/2810:40 amBNE - SEA
1 stop22h 04mDelta
Fri 12/511:15 amSEA - BNE
2 stops27h 05mDelta
Deal found 10/14$916
This Justfly.com deal was found by Cheapflights users on 10/14. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/72:00 pmSYD - SEA
2 stops22h 05mMultiple Airlines
Tue 11/115:30 pmSEA - SYD
2 stops24h 00mMultiple Airlines
Deal found 10/14$925
This oojo deal was found by Cheapflights users on 10/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1211:35 amSYD - SEA
1 stop26h 05mPhilippine Airlines
Sun 11/169:30 pmSEA - SYD
1 stop41h 20mPhilippine Airlines
Deal found 10/14$938

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 October 14, 2025.
Use the filters below to find and compare flights from Australia to Seattle that are best for you.

Fly from

Australia

Fly to

Seattle

Route

Depart

Return

Price

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Tue 12/23

1:00 pm-4:52 pm

1 stop22h 52m

Seattle/Tacoma Intl

Thu 1/1

5:02 am-9:30 am

2 stops33h 28m

$797

BrisbaneSeattle

BNE - SEA

BNESEA

Brisbane

Tue 11/4

11:40 am-12:18 pm

1 stop18h 38m

Seattle/Tacoma Intl

Tue 11/11

7:28 pm-7:30 am

1 stop18h 02m

$813

BrisbaneSeattle

BNE - SEA

BNESEA

Brisbane

Fri 11/21

10:40 am-2:44 pm

1 stop22h 04m

Seattle/Tacoma Intl

Wed 12/3

2:05 pm-8:20 am

1 stop24h 15m

$861

BrisbaneSeattle

BNE - SEA

BNESEA

Brisbane

Sat 11/1

10:40 am-10:28 pm

2 stops28h 48m

Seattle/Tacoma Intl

Sat 11/15

11:59 pm-7:30 am

2 stops37h 31m

$862

BrisbaneSeattle

BNE - SEA

BNESEA

Brisbane

Fri 2/6

10:40 am-2:45 pm

1 stop22h 05m

Seattle/Tacoma Intl

Fri 2/27

7:20 am-8:20 am

1 stop31h 00m

$910

BrisbaneSeattle

BNE - SEA

BNESEA

Brisbane

Fri 2/27

10:40 am-2:45 pm

1 stop22h 05m

Seattle/Tacoma Intl

Fri 3/13

12:00 pm-7:20 am

1 stop26h 20m

$910

BrisbaneSeattle

BNE - SEA

BNESEA

Brisbane

Fri 11/28

10:40 am-5:00 pm

1 stop24h 20m

Seattle/Tacoma Intl

Fri 12/5

2:05 pm-8:20 am

1 stop24h 15m

$916

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Wed 3/11

9:10 am-1:00 pm

1 stop21h 50m

Seattle/Tacoma Intl

Sun 3/15

8:15 pm-7:00 am

1 stop40h 45m

$947

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 3/11

10:20 am-2:55 pm

1 stop22h 35m

Seattle/Tacoma Intl

Sat 3/14

12:10 am-8:20 am

1 stop38h 10m

$959

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Fri 12/19

8:30 am-12:27 pm

2 stops22h 57m

Seattle/Tacoma Intl

Mon 12/29

7:12 pm-10:00 am

1 stop19h 48m

$1,005

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/13

Showing 1-10 of 60 results
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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, August is the cheapest month in which you can book a flight from Australia to Seattle (average of $613). Flying from Australia to Seattle in January is currently the most expensive (average of $824). 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 AU to SEA?

Find hourly flight availability from Australia to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 14, 2025.

It’s typically best to fly out from Australia to Seattle in the evening. Doing so could potentially save you 37% on the flight price compared to flying at noon, which is usually more expensive.

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 October 14, 2025.
Get a feel of what it's like to fly with Singapore Airlines, Delta, and Hawaiian Airlines 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.
Singapore Airlines
8.1
Very good
1,379 reviews

Food

7.7

Crew

8.6

Comfort

8.0

Entertainment

8.0

Boarding

8.2

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BCN - SIN

Staff at Barcelona were fantastic, they helped me change a flight and nothing was any problem. Thank you Dina.
Singapore Airlines
8.1
Very good
1,379 reviews
Singapore Airlines
8.1
Very good
1,379 reviews

Food

7.7

Crew

8.6

Comfort

8.0

Entertainment

8.0

Boarding

8.2

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BCN - SIN

Staff at Barcelona were fantastic, they helped me change a flight and nothing was any problem. Thank you Dina.
Delta
8.0
Very good
7,972 reviews
Singapore Airlines
8.1
Very good
1,379 reviews

Food

7.7

Crew

8.6

Comfort

8.0

Entertainment

8.0

Boarding

8.2

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BCN - SIN

Staff at Barcelona were fantastic, they helped me change a flight and nothing was any problem. Thank you Dina.
Hawaiian Airlines
7.8
Good
2,779 reviews
Singapore Airlines
8.1
Very good
1,379 reviews

Food

7.7

Crew

8.6

Comfort

8.0

Entertainment

8.0

Boarding

8.2

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BCN - SIN

Staff at Barcelona were fantastic, they helped me change a flight and nothing was any problem. Thank you Dina.
United Airlines
7.4
Good
8,975 reviews
Singapore Airlines
8.1
Very good
1,379 reviews

Food

7.7

Crew

8.6

Comfort

8.0

Entertainment

8.0

Boarding

8.2

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BCN - SIN

Staff at Barcelona were fantastic, they helped me change a flight and nothing was any problem. Thank you Dina.
Air Canada
7.1
Good
10,294 reviews
Singapore Airlines
8.1
Very good
1,379 reviews

Food

7.7

Crew

8.6

Comfort

8.0

Entertainment

8.0

Boarding

8.2

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BCN - SIN

Staff at Barcelona were fantastic, they helped me change a flight and nothing was any problem. Thank you Dina.

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 Asiana Airlines can get you from Australia to Seattle in just under 22h 04m. Your travel time can differ by up to 48m. The distance between Australia and Seattle is about 7346 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 $503. Users have also found prices from $567 and $578 on Alaska Airlines and Air Canada, respectively.

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

    Most travelers choose Sydney Kingsford Smith - Seattle/Tacoma Intl, Melbourne - 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, August is the cheapest month in which you can book a flight from Australia to Seattle (average of $613). Flying from Australia to Seattle in January is currently the most expensive (average of $824). 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
Tukwila
Tacoma
Lakewood
Ocean Shores
Lynnwood
Edmonds
Leavenworth
Renton
Lacey
Olympia
Kent
Federal Way
Cle Elum
Puyallup
Chehalis
Kirkland
Issaquah
Aberdeen
Shoreline

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Australia to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Australia to Seattle

Discover the top 5 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 October 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$598Average$1,112FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$794Average$1,073FlexibilityNo cancel feeOn-time69%
DeltaCheapest$802Average$1,374FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$917Average$1,547FlexibilityNo cancel feeOn-time85%
Singapore AirlinesCheapest$1,070Average$1,504FlexibilityNo cancel feeOn-time81%

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