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Cheap flights from Australia to Seattle from $651

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 30/7. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — SEA
18 May — 25 May1
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 18 April 2026.

Tue 9/610:55
MEL
-
SEA
1 stop29h 15m
United Airlines
Tue 23/615:33
SEA
-
MEL
1 stop23h 42m
United Airlines
Deal found 14/4$1,282
Sun 3/510:55
MEL
-
SEA
1 stop18h 30m
United Airlines
Sat 23/517:00
SEA
-
MEL
2 stops69h 30m
United Airlines
Deal found 12/4$1,283
Tue 5/510:55
MEL
-
SEA
2 stops45h 53m
United Airlines
Sat 23/517:00
SEA
-
MEL
2 stops69h 30m
United Airlines
Deal found 15/4$1,292
Thu 7/510:55
MEL
-
SEA
1 stop18h 30m
United Airlines
Thu 14/513:21
SEA
-
MEL
1 stop25h 54m
United Airlines
Deal found 13/4$1,293
Wed 13/510:55
MEL
-
SEA
1 stop24h 37m
United Airlines
Thu 28/510:29
SEA
-
MEL
1 stop28h 46m
United Airlines
Deal found 16/4$1,297
Thu 28/506:00
MEL
-
SEA
2 stops21h 05m
Multiple Airlines
Thu 4/619:20
SEA
-
MEL
2 stops22h 45m
Multiple Airlines
Deal found 13/4$1,311
Tue 5/509:15
SYD
-
SEA
1 stop22h 36m
Delta
Mon 11/519:55
SEA
-
SYD
1 stop41h 55m
Delta
Deal found 14/4$1,347
Tue 12/509:15
SYD
-
SEA
1 stop24h 38m
Delta
Tue 19/510:15
SEA
-
SYD
1 stop27h 35m
Delta
Deal found 14/4$1,357
Thu 23/409:15
SYD
-
SEA
1 stop26h 11m
Delta
Wed 6/516:36
SEA
-
SYD
2 stops21h 14m
Delta
Deal found 17/4$1,367
Tue 12/513:15
SYD
-
SEA
2 stops22h 25m
Multiple Airlines
Wed 27/517:59
SEA
-
SYD
2 stops24h 51m
Multiple Airlines
Deal found 14/4$1,403
Wed 10/617:50
SYD
-
SEA
1 stop21h 08m
Qantas Airways
Wed 24/614:40
SEA
-
SYD
1 stop23h 25m
Qantas Airways
Deal found 17/4$1,406
Sat 2/509:15
SYD
-
SEA
2 stops20h 10m
Delta
Sun 10/513:25
SEA
-
SYD
2 stops24h 25m
Delta
Deal found 14/4$1,416

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 18 April 2026.

Round-trip from

$1,282

One-way from

$651

Popular in

July

Cheapest in

September

Average price

$1,526
United Airlines
  • United Airlines
  • 9/6-23/6
  • 3 total stops
  • 55h 49m total
  • Australia to Seattle
Search Deals
30/7
  • 30/7
  • 2 total stops
  • 22h 46m total
  • Australia to Seattle
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($125 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($63 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 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 18 April 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

10:55-19:03

1 stop25h 08m

Seattle/Tacoma Intl

Wed 24/6

17:04-07:30

1 stop21h 26m

$1,283

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Sun 14/6

10:55-14:30

1 stop20h 35m

Seattle/Tacoma Intl

Sun 21/6

07:00-08:15

1 stop32h 15m

$1,292

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Tue 5/5

10:55-14:36

1 stop20h 41m

Seattle/Tacoma Intl

Sat 23/5

17:00-07:30

2 stops69h 30m

$1,292

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Wed 13/5

10:00-16:44

2 stops23h 44m

Seattle/Tacoma Intl

Thu 28/5

17:45-07:50

2 stops45h 05m

$1,357

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Sun 10/5

10:00-16:44

2 stops23h 44m

Seattle/Tacoma Intl

Fri 22/5

07:15-07:50

2 stops31h 35m

$1,361

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Fri 15/5

10:00-15:05

1 stop22h 05m

Seattle/Tacoma Intl

Fri 22/5

07:15-07:50

2 stops31h 35m

$1,361

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Fri 1/5

09:15-12:37

1 stop20h 22m

Seattle/Tacoma Intl

Mon 1/6

05:30-06:50

2 stops32h 20m

$1,432

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Thu 30/4

09:30-19:44

2 stops27h 14m

Seattle/Tacoma Intl

Sat 23/5

23:52-06:55

2 stops38h 03m

$1,544

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Tue 5/5

09:45-22:58

1 stop30h 13m

Seattle/Tacoma Intl

Sat 23/5

14:40-06:45

1 stop23h 05m

$1,595

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Sun 14/6

10:55-14:30

1 stop20h 35m

Seattle/Tacoma Intl

Fri 10/7

08:45-10:35

2 stops32h 50m

$1,618

Flights are sorted by cheapest return flights first.

Deals found on 13/4

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
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, December is the cheapest month in which you can book a flight from Australia to Seattle (average of $595). Flying from Australia to Seattle in April is currently the most expensive (average of $1,052). 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 18 April 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
1,497 reviews
Check prices

Entertainment

8.0

Boarding

8.3

Comfort

8.0

Crew

8.6

Overall

8.2

Food

7.8

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
Singapore Airlines
8.2
Very Good
1,497 reviews
Singapore Airlines
8.2
Very Good
1,497 reviews
Check prices

Entertainment

8.0

Boarding

8.3

Comfort

8.0

Crew

8.6

Overall

8.2

Food

7.8

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
Virgin Australia
7.6
Good
453 reviews
Singapore Airlines
8.2
Very Good
1,497 reviews
Check prices

Entertainment

8.0

Boarding

8.3

Comfort

8.0

Crew

8.6

Overall

8.2

Food

7.8

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
Qantas Airways
7.5
Good
1,019 reviews
Singapore Airlines
8.2
Very Good
1,497 reviews
Check prices

Entertainment

8.0

Boarding

8.3

Comfort

8.0

Crew

8.6

Overall

8.2

Food

7.8

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
United Airlines
7.4
Good
9,605 reviews
Singapore Airlines
8.2
Very Good
1,497 reviews
Check prices

Entertainment

8.0

Boarding

8.3

Comfort

8.0

Crew

8.6

Overall

8.2

Food

7.8

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
Air Canada
7.1
Good
10,935 reviews
Singapore Airlines
8.2
Very Good
1,497 reviews
Check prices

Entertainment

8.0

Boarding

8.3

Comfort

8.0

Crew

8.6

Overall

8.2

Food

7.8

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.

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 Alaska Airlines fly from Australia to Seattle in about 18h 08m. The time it takes to get you to your destination can typically vary by up to 7h. Australia and Seattle are separated by a distance of 12463 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 $552. 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 Melbourne - Seattle/Tacoma Intl. You may also consider Sydney Kingsford Smith - Seattle/Tacoma Intl or Melbourne Avalon - 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, December is the cheapest month in which you can book a flight from Australia to Seattle (average of $595). Flying from Australia to Seattle in April is currently the most expensive (average of $1,052). 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
SeaTac
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 18 April 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 18 April 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$676Average$1,589FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air CanadaCheapest$917Average$1,333FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest$934Average$1,365FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapest$943Average$1,262FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air New ZealandCheapest$952Average$1,497FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
Virgin AustraliaCheapest$1,047Average$1,681FlexibilityNo cancel feeOn-time80%
Search Virgin Australia flights
Qantas AirwaysCheapest$1,049Average$1,615FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Alaska AirlinesCheapest$1,091Average$1,695FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
EVA AirCheapest$1,111Average$1,415FlexibilityNo cancel feeOn-time74%
Search EVA Air flights
Hawaiian AirlinesCheapest$1,130Average$1,800FlexibilityNo cancel feeOn-time85%
Search Hawaiian 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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