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Cheap flights from Australia to Seattle from $798

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 28/8. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — SEA
10 Aug — 17 Aug1
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 11 July 2026.

Thu 6/820:45
SYD
-
SEA
1 stop20h 14m
Multiple Airlines
Tue 18/821:09
SEA
-
SYD
1 stop28h 41m
Multiple Airlines
Deal found 10/7$1,300
Tue 28/720:45
SYD
-
SEA
1 stop17h 49m
Alaska Airlines
Tue 11/821:09
SEA
-
SYD
1 stop28h 41m
Alaska Airlines
Deal found 6/7$1,307
Thu 6/810:55
MEL
-
SEA
1 stop18h 39m
United Airlines
Thu 13/807:00
SEA
-
MEL
2 stops32h 15m
United Airlines
Deal found 9/7$1,319
Mon 10/810:55
MEL
-
SEA
1 stop18h 39m
United Airlines
Mon 31/816:58
SEA
-
MEL
1 stop21h 32m
United Airlines
Deal found 8/7$1,320
Mon 20/709:10
SYD
-
SEA
1 stop29h 35m
Iberia
Mon 3/813:57
SEA
-
SYD
1 stop23h 58m
Iberia
Deal found 7/7$1,329
Fri 10/710:55
MEL
-
SEA
1 stop31h 34m
United Airlines
Sun 26/705:15
SEA
-
MEL
1 stop34h 00m
United Airlines
Deal found 6/7$1,330
Thu 20/820:45
SYD
-
SEA
1 stop20h 08m
Multiple Airlines
Mon 24/807:20
SEA
-
SYD
1 stop18h 30m
Multiple Airlines
Deal found 9/7$1,341
Mon 13/709:10
SYD
-
SEA
1 stop29h 35m
American Airlines
Tue 28/715:21
SEA
-
SYD
1 stop22h 34m
American Airlines
Deal found 8/7$1,348
Mon 27/709:10
SYD
-
SEA
1 stop29h 35m
American Airlines
Tue 11/823:16
SEA
-
SYD
1 stop38h 39m
American Airlines
Deal found 6/7$1,349
Tue 11/820:45
SYD
-
SEA
1 stop20h 14m
Multiple Airlines
Mon 31/807:20
SEA
-
SYD
1 stop18h 30m
Multiple Airlines
Deal found 6/7$1,353
Fri 16/1020:45
SYD
-
SEA
1 stop18h 49m
Multiple Airlines
Tue 20/1020:42
SEA
-
SYD
1 stop28h 08m
Multiple Airlines
Deal found 6/7$1,356
Mon 13/709:30
SYD
-
SEA
2 stops28h 40m
United Airlines
Tue 28/717:20
SEA
-
SYD
1 stop20h 35m
United Airlines
Deal found 9/7$1,362

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 11 July 2026.

Round-trip from

$1,300

One-way from

$798

Popular in

January

Cheapest in

August

Average price

$1,561
Alaska Airlines
  • Alaska Airlines
  • 6/8-18/8
  • 2 total stops
  • 48h 55m total
  • Australia to Seattle
Search Deals
United Airlines
  • United Airlines
  • 28/8
  • 2 total stops
  • 28h 45m total
  • Australia to Seattle
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($93 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($32 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 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 11 July 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

Tue 18/8

10:55-14:24

1 stop20h 29m

Seattle/Tacoma Intl

Thu 10/9

11:03-08:15

2 stops28h 12m

$1,305

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Mon 3/8

10:55-23:10

1 stop29h 15m

Seattle/Tacoma Intl

Sat 15/8

09:05-08:15

1 stop30h 10m

$1,319

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Thu 23/7

10:55-20:53

1 stop26h 58m

Seattle/Tacoma Intl

Sun 2/8

07:00-08:15

1 stop32h 15m

$1,320

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Thu 23/7

10:55-18:47

1 stop24h 52m

Seattle/Tacoma Intl

Mon 3/8

17:04-07:30

1 stop21h 26m

$1,320

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Sun 26/7

10:55-12:34

1 stop18h 39m

Seattle/Tacoma Intl

Thu 13/8

08:40-08:15

2 stops30h 35m

$1,320

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Tue 28/7

09:30-21:10

2 stops28h 40m

Seattle/Tacoma Intl

Tue 4/8

08:35-07:00

1 stop29h 25m

$1,364

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Sun 2/8

10:00-16:28

2 stops23h 28m

Seattle/Tacoma Intl

Thu 20/8

18:09-07:50

2 stops44h 41m

$1,374

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Sun 26/7

10:00-23:59

2 stops30h 59m

Seattle/Tacoma Intl

Thu 13/8

18:09-07:50

2 stops44h 41m

$1,374

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Fri 7/8

10:00-16:37

1 stop23h 37m

Seattle/Tacoma Intl

Fri 14/8

07:15-07:50

2 stops31h 35m

$1,374

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Thu 6/8

09:15-14:50

1 stop22h 35m

Seattle/Tacoma Intl

Tue 18/8

09:40-06:50

2 stops28h 10m

$1,374

Flights are sorted by cheapest return flights first.

Deals found on 6/7

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 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 $614). Flying from Australia to Seattle in October is currently the most expensive (average of $1,122). 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.

How far ahead should I book a flight from Australia to Seattle?

To ensure you get the cheapest price possible for a flight from Australia to Seattle, you should look to book at least 8 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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 11 July 2026.
Read through reviews of airlines operating flights from Australia to Seattle, such as Virgin Australia,Qantas Airways, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Virgin Australia
7.6
Good
463 reviews
Check prices

Boarding

7.8

Crew

8.2

Comfort

7.5

Food

6.4

Overall

7.6

Entertainment

6.4

Reviews

1 / 20
8.0
Excellent

Elio,Jan 2026

MEL - ADL

Starting to be as efficient as qantas… bar the food offerings Virgin is up there now
Virgin Australia
7.6
Good
463 reviews
Virgin Australia
7.6
Good
463 reviews
Check prices

Boarding

7.8

Crew

8.2

Comfort

7.5

Food

6.4

Overall

7.6

Entertainment

6.4

Reviews

1 / 20
8.0
Excellent

Elio,Jan 2026

MEL - ADL

Starting to be as efficient as qantas… bar the food offerings Virgin is up there now
Qantas Airways
7.5
Good
1,059 reviews
Virgin Australia
7.6
Good
463 reviews
Check prices

Boarding

7.8

Crew

8.2

Comfort

7.5

Food

6.4

Overall

7.6

Entertainment

6.4

Reviews

1 / 20
8.0
Excellent

Elio,Jan 2026

MEL - ADL

Starting to be as efficient as qantas… bar the food offerings Virgin is up there now
United Airlines
7.4
Good
9,975 reviews
Virgin Australia
7.6
Good
463 reviews
Check prices

Boarding

7.8

Crew

8.2

Comfort

7.5

Food

6.4

Overall

7.6

Entertainment

6.4

Reviews

1 / 20
8.0
Excellent

Elio,Jan 2026

MEL - ADL

Starting to be as efficient as qantas… bar the food offerings Virgin is up there now
American Airlines
7.1
Good
11,806 reviews
Virgin Australia
7.6
Good
463 reviews
Check prices

Boarding

7.8

Crew

8.2

Comfort

7.5

Food

6.4

Overall

7.6

Entertainment

6.4

Reviews

1 / 20
8.0
Excellent

Elio,Jan 2026

MEL - ADL

Starting to be as efficient as qantas… bar the food offerings Virgin is up there now
Air Canada
7.1
Good
11,325 reviews
Virgin Australia
7.6
Good
463 reviews
Check prices

Boarding

7.8

Crew

8.2

Comfort

7.5

Food

6.4

Overall

7.6

Entertainment

6.4

Reviews

1 / 20
8.0
Excellent

Elio,Jan 2026

MEL - ADL

Starting to be as efficient as qantas… bar the food offerings Virgin is up there now

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 20h 29m. The time it takes to get you to your destination can typically vary by up to 9h 13m. 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 United Airlines, with whom users have recently found tickets for as low as $586. However, be on the lookout for offers from Air Canada and Hawaiian 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 Adelaide - 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 $614). Flying from Australia to Seattle in October is currently the most expensive (average of $1,122). 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
Tukwila

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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 11 July 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 11 July 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$778Average$1,379FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapest$836Average$1,432FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air CanadaCheapest$961Average$1,401FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest$965Average$1,337FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Virgin AustraliaCheapest$973Average$1,516FlexibilityNo cancel feeOn-time80%
Search Virgin Australia flights
Hawaiian AirlinesCheapest$1,057Average$1,861FlexibilityNo cancel feeOn-time85%
Search Hawaiian Airlines flights
Qantas AirwaysCheapest$1,083Average$1,728FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Air New ZealandCheapest$1,191Average$1,608FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
Japan AirlinesCheapest$1,300Average$2,082FlexibilityNo cancel feeOn-time79%
Search Japan Airlines flights
ANACheapest$1,318Average$1,588FlexibilityNo cancel feeOn-time80%
Search ANA 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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