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Cheap flights from Australia to Seattle from $685

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 10/5. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — SEA
12 Apr — 19 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Australia to Seattle

Enter your travel dates to find the best prices.

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 13 March 2026.

Fri 29/509:30
MEL
-
SEA
2 stops25h 29m
United Airlines
Wed 24/612:50
SEA
-
MEL
2 stops25h 40m
United Airlines
Deal found 13/3$1,081
Sun 26/410:00
MEL
-
SEA
1 stop30h 51m
Delta
Sun 3/516:36
SEA
-
MEL
2 stops46h 14m
Delta
Deal found 12/3$1,100
Tue 12/510:55
MEL
-
SEA
1 stop18h 30m
United Airlines
Sat 30/513:30
SEA
-
MEL
1 stop25h 45m
United Airlines
Deal found 13/3$1,101
Fri 13/309:45
BNE
-
SEA
1 stop30h 11m
Air Canada
Fri 20/315:40
SEA
-
BNE
1 stop23h 05m
Air Canada
Deal found 8/3$1,130
Fri 13/309:45
BNE
-
SEA
1 stop30h 11m
Air Canada
Wed 25/315:40
SEA
-
BNE
2 stops26h 50m
Air Canada
Deal found 8/3$1,164
Wed 6/506:00
MEL
-
SEA
2 stops20h 50m
Air Canada
Tue 19/519:20
SEA
-
MEL
2 stops22h 45m
Air Canada
Deal found 9/3$1,219
Thu 12/309:45
BNE
-
SEA
1 stop30h 12m
Air Canada
Tue 24/310:10
SEA
-
BNE
1 stop28h 35m
Air Canada
Deal found 8/3$1,230
Fri 13/309:45
BNE
-
SEA
1 stop16h 50m
Air Canada
Sat 21/320:00
SEA
-
BNE
1 stop18h 45m
Air Canada
Deal found 9/3$1,237
Thu 12/309:45
BNE
-
SEA
1 stop30h 12m
Air Canada
Wed 25/315:40
SEA
-
BNE
1 stop23h 05m
Air Canada
Deal found 9/3$1,261
Sat 25/413:15
SYD
-
SEA
2 stops22h 25m
Multiple Airlines
Sat 2/517:06
SEA
-
SYD
2 stops25h 44m
Multiple Airlines
Deal found 11/3$1,261
Thu 12/309:45
BNE
-
SEA
1 stop30h 12m
Air Canada
Mon 23/315:40
SEA
-
BNE
2 stops47h 20m
Air Canada
Deal found 8/3$1,263
Mon 12/1007:10
MEL
-
SEA
2 stops25h 12m
Multiple Airlines
Sat 14/1119:05
SEA
-
MEL
2 stops23h 55m
Multiple Airlines
Deal found 10/3$1,265

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 13 March 2026.

Round-trip from

$1,081

One-way from

$685

Popular in

July

Cheapest in

August

Average price

$1,437
United Airlines
  • United Airlines
  • 29/5-24/6
  • 4 total stops
  • 51h 09m total
  • Australia to Seattle
Search Deals
Delta
  • Delta
  • 10/5
  • 2 total stops
  • 25h 48m total
  • Australia to Seattle
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($123 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($65 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customise 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 647,157 searches. Data last updated 13 March 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 return flight

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Fri 29/5

10:55-23:10

1 stop29h 15m

Seattle/Tacoma Intl

Wed 24/6

19:05-08:15

1 stop20h 10m

$1,081

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Sun 26/4

10:00-18:26

1 stop25h 26m

Seattle/Tacoma Intl

Sun 3/5

19:59-07:50

1 stop42h 51m

$1,100

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Tue 12/5

10:55-14:36

1 stop20h 41m

Seattle/Tacoma Intl

Sat 30/5

12:50-08:15

2 stops26h 25m

$1,108

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Fri 29/5

10:00-15:05

1 stop22h 05m

Seattle/Tacoma Intl

Wed 24/6

12:00-07:50

1 stop26h 50m

$1,287

MelbourneSeattle

AVV - SEA

AVVSEA

Melbourne Avalon

Tue 12/5

16:40-18:30

2 stops42h 50m

Seattle/Tacoma Intl

Sat 30/5

05:40-14:20

2 stops39h 40m

$1,377
Fastest return journey

BrisbaneSeattle

BNE - SEA

BNESEA

Brisbane

Wed 1/7

10:00-18:32

1 stop25h 32m

Seattle/Tacoma Intl

Sun 5/7

19:20-07:05

1 stop18h 45m

$1,426

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Mon 27/4

16:35-22:58

2 stops23h 23m

Seattle/Tacoma Intl

Mon 4/5

18:40-12:40

2 stops25h 00m

$1,441

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Wed 6/5

10:00-20:25

1 stop27h 25m

Seattle/Tacoma Intl

Tue 19/5

19:57-07:50

1 stop42h 53m

$1,447

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Wed 17/6

10:00-00:22

1 stop31h 22m

Seattle/Tacoma Intl

Mon 29/6

07:20-07:50

1 stop31h 30m

$1,447

PerthSeattle

PER - SEA

PERSEA

Perth

Thu 23/4

05:35-16:10

2 stops25h 35m

Seattle/Tacoma Intl

Wed 29/4

01:15-04:20

2 stops36h 05m

$1,606

Flights are sorted by cheapest return flights first.

Deals found on 11/3

Showing 1-10 of 60 resultsSorted by cheapest first
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2
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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 return 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, January is the cheapest month in which you can book a flight from Australia to Seattle (average of $806). Flying from Australia to Seattle in July is currently the most expensive (average of $1,128). 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 13 March 2026.
Read through reviews of airlines operating flights from Australia to Seattle, such as Singapore Airlines,Virgin Australia, andQantas Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.2
Very Good
1,475 reviews
Check prices

Crew

8.6

Entertainment

8.0

Comfort

8.0

Overall

8.2

Boarding

8.3

Food

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.
Singapore Airlines
8.2
Very Good
1,475 reviews
Singapore Airlines
8.2
Very Good
1,475 reviews
Check prices

Crew

8.6

Entertainment

8.0

Comfort

8.0

Overall

8.2

Boarding

8.3

Food

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.
Virgin Australia
7.6
Good
446 reviews
Singapore Airlines
8.2
Very Good
1,475 reviews
Check prices

Crew

8.6

Entertainment

8.0

Comfort

8.0

Overall

8.2

Boarding

8.3

Food

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.
Qantas Airways
7.5
Good
1,004 reviews
Singapore Airlines
8.2
Very Good
1,475 reviews
Check prices

Crew

8.6

Entertainment

8.0

Comfort

8.0

Overall

8.2

Boarding

8.3

Food

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.
United Airlines
7.4
Good
9,419 reviews
Singapore Airlines
8.2
Very Good
1,475 reviews
Check prices

Crew

8.6

Entertainment

8.0

Comfort

8.0

Overall

8.2

Boarding

8.3

Food

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.
Air Canada
7.1
Good
10,800 reviews
Singapore Airlines
8.2
Very Good
1,475 reviews
Check prices

Crew

8.6

Entertainment

8.0

Comfort

8.0

Overall

8.2

Boarding

8.3

Food

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.

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?

    Seattle/Tacoma Intl (SEA) is the airport you will fly into if you book a flight from Australia to Seattle. It is only a 18.4 km journey from Seattle/Tacoma Intl (SEA) to Seattle’s city centre.

  • How long is the flight from Australia to Seattle?

    Airlines like United Airlines, Delta, and Air Canada fly from Australia to Seattle in about 25h 26m. The time it takes to get you to your destination can typically vary by up to 3h 49m. Australia and Seattle are separated by a distance of 13164 km. This flight may include one or multiple stops.

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

    The cheapest airline one-way is Air Canada, with whom users have recently found tickets for as low as $558. However, be on the lookout for offers from Qantas Airways and United Airlines, as they are both options that can get you from Australia to Seattle for a low price.

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

    The most popular route from Australia to Seattle is Sydney Kingsford Smith - Seattle/Tacoma Intl. You may also consider Melbourne - Seattle/Tacoma Intl or Brisbane - Seattle/Tacoma Intl.

  • 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 holiday 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, January is the cheapest month in which you can book a flight from Australia to Seattle (average of $806). Flying from Australia to Seattle in July is currently the most expensive (average of $1,128). 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

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Ocean Shores

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Fly from Australia to Seattle on these airlines

Choose from the following airlines for your flight from Australia to Seattle. Flights are based on user searches made on Cheapflights and were last updated on 13 March 2026.
United Airlines flights from Australia to Seattle/Tacoma Intl

Top 10 airlines flying from Australia to Seattle

Discover the top 10 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 647,157 searches. Data last updated 13 March 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$682Average$1,954FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air CanadaCheapest$939Average$1,382FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest$943Average$1,430FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapest$951Average$1,271FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air New ZealandCheapest$960Average$1,511FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
Virgin AustraliaCheapest$1,057Average$1,702FlexibilityNo cancel feeOn-time80%
Search Virgin Australia flights
Qantas AirwaysCheapest$1,058Average$1,601FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Alaska AirlinesCheapest$1,101Average$1,711FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
Hawaiian AirlinesCheapest$1,140Average$1,823FlexibilityNo cancel feeOn-time85%
Search Hawaiian Airlines flights
Philippine AirlinesCheapest$1,173Average$1,427FlexibilityNo cancel feeOn-time60%
Search Philippine Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Australia to Seattle?

Cheapflights makes it easy to find Australia to Seattle flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Australia to Seattle?

Cheapflights helps you find that perfect flight to Seattle from Australia by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Australia to Seattle with no change fees?

Yes, we can. To see specific flights from Australia to Seattle with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Australia to Seattle become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Seattle from Australia today and book when prices fit your budget.

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