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Cheap flights from Australia to Seattle from $643

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 21/12. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — SEA
20 Dec — 27 Dec1
1 adult
1 adult, Economy, 0 bags

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 20 November 2025.

Round-trip from

$993

One-way from

$643

Popular in

July

Cheapest in

August

Average price

$1,629
Air Canada
  • Air Canada
  • 17/1-30/1
  • 2 total stops
  • 45h 16m total
  • Australia to Seattle
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United Airlines
  • United Airlines
  • 13/12
  • 1 total stop
  • 24h 48m total
  • Australia to Seattle
Search Deals
Highest demand for flights based on searches. 1% potential increase in price ($29 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($59 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
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Find 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 20 November 2025.

Fri 5/1210:45BNE - SEA
1 stop16h 46mAir Canada
Thu 11/1205:50SEA - BNE
1 stop32h 55mAir Canada
Deal found 18/11$1,050
Sat 6/1219:40BNE - SEA
2 stops35h 21mAmerican Airlines
Wed 10/1206:05SEA - BNE
1 stop28h 55mAmerican Airlines
Deal found 18/11$1,064
Tue 9/1212:10BNE - SEA
2 stops40h 33mAmerican Airlines
Thu 18/1205:23SEA - BNE
2 stops29h 37mAmerican Airlines
Deal found 18/11$1,066
Tue 9/1212:10BNE - SEA
2 stops40h 33mAmerican Airlines
Sat 20/1219:13SEA - BNE
1 stop40h 32mAmerican Airlines
Deal found 18/11$1,067
Thu 4/1211:40BNE - SEA
2 stops28h 06mUnited Airlines
Mon 8/1217:11SEA - BNE
1 stop20h 19mUnited Airlines
Deal found 19/11$1,075
Wed 3/1211:40BNE - SEA
1 stop29h 35mUnited Airlines
Tue 9/1219:34SEA - BNE
1 stop17h 56mUnited Airlines
Deal found 18/11$1,080
Sun 7/1207:15BNE - SEA
2 stops29h 05mAmerican Airlines
Wed 10/1208:30SEA - BNE
2 stops26h 30mAmerican Airlines
Deal found 18/11$1,112
Mon 8/1209:45BNE - SEA
2 stops26h 35mAmerican Airlines
Mon 15/1208:30SEA - BNE
1 stop28h 00mAmerican Airlines
Deal found 18/11$1,114
Wed 3/1206:05BNE - SEA
2 stops21h 26mAir Canada
Sat 13/1215:40SEA - BNE
2 stops23h 50mAir Canada
Deal found 18/11$1,123
Tue 2/1211:10BNE - SEA
2 stops40h 21mAir Canada
Sun 14/1205:50SEA - BNE
1 stop32h 55mAir Canada
Deal found 18/11$1,135
Sun 23/1112:10MEL - SEA
2 stops29h 20mAir New Zealand
Sun 30/1115:40SEA - MEL
2 stops22h 45mAir New Zealand
Deal found 18/11$1,430
Fri 21/1111:35SYD - SEA
1 stop26h 05mPhilippine Airlines
Sun 7/1221:30SEA - SYD
1 stop41h 20mPhilippine Airlines
Deal found 19/11$1,438

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 20 November 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

BrisbaneSeattle

BNE - SEA

BNESEA

Brisbane

Sat 17/1

10:45-19:16

1 stop26h 31m

Seattle/Tacoma Intl

Fri 30/1

15:40-16:55

2 stops31h 15m

$1,044

BrisbaneSeattle

BNE - SEA

BNESEA

Brisbane

Thu 4/12

11:40-18:25

2 stops24h 45m

Seattle/Tacoma Intl

Mon 8/12

12:35-07:30

2 stops24h 55m

$1,075

BrisbaneSeattle

BNE - SEA

BNESEA

Brisbane

Wed 3/12

11:05-22:23

1 stop29h 18m

Seattle/Tacoma Intl

Wed 10/12

07:10-08:20

1 stop31h 10m

$1,080

BrisbaneSeattle

BNE - SEA

BNESEA

Brisbane

Tue 2/12

11:40-21:00

1 stop27h 20m

Seattle/Tacoma Intl

Tue 9/12

13:05-07:30

1 stop24h 25m

$1,080

BrisbaneSeattle

BNE - SEA

BNESEA

Brisbane

Fri 5/12

10:40-00:21

2 stops31h 41m

Seattle/Tacoma Intl

Wed 10/12

14:05-08:20

1 stop24h 15m

$1,080

BrisbaneSeattle

BNE - SEA

BNESEA

Brisbane

Sat 17/1

11:40-21:12

1 stop27h 32m

Seattle/Tacoma Intl

Fri 30/1

17:10-07:30

1 stop20h 20m

$1,080

BrisbaneSeattle

BNE - SEA

BNESEA

Brisbane

Sun 7/12

11:40-18:32

1 stop24h 52m

Seattle/Tacoma Intl

Tue 9/12

19:34-07:30

1 stop17h 56m

$1,080

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Wed 25/3

12:00-00:59

1 stop30h 59m

Seattle/Tacoma Intl

Tue 5/5

19:32-08:15

1 stop19h 43m

$1,222

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Sat 24/1

11:30-21:15

2 stops28h 45m

Seattle/Tacoma Intl

Fri 6/2

17:10-10:00

1 stop21h 50m

$1,222

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Tue 19/5

10:55-21:12

2 stops27h 17m

Seattle/Tacoma Intl

Fri 12/6

17:30-08:15

1 stop21h 45m

$1,226

Flights are sorted by cheapest return flights first.

Deals found on 19/11

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 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, August is the cheapest month in which you can book a flight from Australia to Seattle (average of $946). Flying from Australia to Seattle in January is currently the most expensive (average of $1,271). 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 20 November 2025.

Unlike at midday, when flights are generally more expensive, you can save up to 23% on flights from Australia to Seattle by exploring options for tickets in the evening.

What is the cheapest day to fly from Australia to Seattle?

Use this chart to determine the cheapest time to fly return from Australia to Seattle. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their Australia to Seattle flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Friday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

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 20 November 2025.
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
8.1
Very Good
1,407 reviews
Check prices

Entertainment

8.0

Overall

8.1

Crew

8.6

Boarding

8.3

Food

7.7

Comfort

8.0

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
8.1
Very Good
1,407 reviews
Singapore Airlines
8.1
Very Good
1,407 reviews
Check prices

Entertainment

8.0

Overall

8.1

Crew

8.6

Boarding

8.3

Food

7.7

Comfort

8.0

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
424 reviews
Singapore Airlines
8.1
Very Good
1,407 reviews
Check prices

Entertainment

8.0

Overall

8.1

Crew

8.6

Boarding

8.3

Food

7.7

Comfort

8.0

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
942 reviews
Singapore Airlines
8.1
Very Good
1,407 reviews
Check prices

Entertainment

8.0

Overall

8.1

Crew

8.6

Boarding

8.3

Food

7.7

Comfort

8.0

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
9,028 reviews
Singapore Airlines
8.1
Very Good
1,407 reviews
Check prices

Entertainment

8.0

Overall

8.1

Crew

8.6

Boarding

8.3

Food

7.7

Comfort

8.0

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
10,463 reviews
Singapore Airlines
8.1
Very Good
1,407 reviews
Check prices

Entertainment

8.0

Overall

8.1

Crew

8.6

Boarding

8.3

Food

7.7

Comfort

8.0

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 Air Canada, United Airlines, and Asiana Airlines fly from Australia to Seattle in about 22h 25m. The time it takes to get you to your destination can typically vary by up to 4h 06m. 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 United Airlines, with whom users have recently found tickets for as low as $643. However, be on the lookout for offers from American Airlines and Qantas Airways, 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 Perth - 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, August is the cheapest month in which you can book a flight from Australia to Seattle (average of $946). Flying from Australia to Seattle in January is currently the most expensive (average of $1,271). 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 20 November 2025.
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 20 November 2025.
AirlineCheapestAverageFlexibilityOn-time
Air New ZealandCheapest$946Average$1,570FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
American AirlinesCheapest$1,003Average$1,403FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Virgin AustraliaCheapest$1,159Average$2,143FlexibilityNo cancel feeOn-time80%
Search Virgin Australia flights
Alaska AirlinesCheapest$1,162Average$1,791FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
DeltaCheapest$1,171Average$2,144FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air CanadaCheapest$1,179Average$1,573FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Qantas AirwaysCheapest$1,224Average$1,838FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
United AirlinesCheapest$1,225Average$1,724FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Hawaiian AirlinesCheapest$1,252Average$1,869FlexibilityNo cancel feeOn-time85%
Search Hawaiian Airlines flights
Philippine AirlinesCheapest$1,272Average$1,513FlexibilityNo 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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