HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seattle

$520+ Cheap flights from Sydney (SYD) 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 2/10. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — SEA
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Sydney to Seattle with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Sydney Kingsford Smith to Seattle/Tacoma Intl are usually found in August or September, booked 39 days in advance, depart on a Saturday or Sunday and return on a Tuesday

Cheap flight deals from Sydney to Seattle

Cheapest flights from Sydney to Seattle
Explore the most affordable flight options available from Sydney to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This BestPriceTravel deal was found by Cheapflights users on 12/10. 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 BestPriceTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2411:20 amSYD - SEA
1 stop17h 11mAir Canada
Thu 1/15:50 amSEA - SYD
1 stop30h 05mAir Canada
Deal found 12/10$1,287
This TravelUp deal was found by Cheapflights users on 12/10. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2611:20 amSYD - SEA
1 stop22h 11mAir Canada
Tue 1/69:55 amSEA - SYD
2 stops51h 45mAir Canada
Deal found 12/10$1,661
This BestPriceTravel deal was found by Cheapflights users on 12/10. 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 BestPriceTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/199:40 pmSYD - SEA
1 stop19h 14mHawaiian Airlines
Sun 1/47:00 amSEA - SYD
1 stop17h 45mHawaiian Airlines
Deal found 12/10$1,884
This BestPriceTravel deal was found by Cheapflights users on 12/10. 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 BestPriceTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/199:40 pmSYD - SEA
1 stop18h 30mHawaiian Airlines
Sat 1/35:50 pmSEA - SYD
1 stop30h 55mHawaiian Airlines
Deal found 12/10$1,895
This BestPriceTravel deal was found by Cheapflights users on 12/10. 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 BestPriceTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1911:20 amSYD - SEA
1 stop22h 11mAir Canada
Sun 1/48:00 pmSEA - SYD
2 stops24h 55mAir Canada
Deal found 12/10$1,941
This United Airlines deal was found by Cheapflights users on 12/10. 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.
Fri 12/1911:20 amSYD - SEA
2 stops28h 57mUnited Airlines
Sat 1/37:12 pmSEA - SYD
1 stop40h 08mUnited Airlines
Deal found 12/10$1,981

Find flight deals from Sydney to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Sydney (SYD) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 12, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$790
(CheapTickets.ch)

One-way from

$520
(Trip.com)

Popular in

July

Cheapest in

August

Average price

$1,251
Provider with most accurate pricing for Sydney Kingsford Smith-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Sydney Kingsford Smith-Seattle/Tacoma Intl flights.
Search Deals
From Sydney Kingsford Smith to Seattle/Tacoma Intl
Search Deals
One-way flight from Sydney Kingsford Smith to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($29 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sydney 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 December 12, 2025.
Use the filters below to find and compare flights from Sydney to Seattle that are best for you.

Fly from

Sydney

Fly to

Seattle

Route

Depart

Return

Price

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Sat 1/24

6:20 am-10:06 pm

2 stops34h 46m

Seattle/Tacoma Intl

Sat 1/31

5:50 am-8:45 pm

2 stops43h 55m

$825

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 3/18

6:20 am-9:31 am

2 stops21h 11m

Seattle/Tacoma Intl

Tue 5/5

9:55 am-7:35 pm

2 stops40h 40m

$921

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Sun 1/25

6:20 am-10:06 pm

2 stops34h 46m

Seattle/Tacoma Intl

Sun 2/1

8:00 pm-5:40 pm

2 stops26h 40m

$934

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 3/18

10:20 am-2:55 pm

1 stop22h 35m

Seattle/Tacoma Intl

Mon 5/4

12:10 am-7:30 am

1 stop38h 20m

$944

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Sun 5/31

9:30 am-2:55 pm

1 stop22h 25m

Seattle/Tacoma Intl

Fri 6/26

12:10 am-7:30 am

1 stop38h 20m

$981

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 4/15

1:15 pm-6:54 pm

2 stops22h 39m

Seattle/Tacoma Intl

Fri 5/15

5:43 pm-11:45 am

2 stops25h 02m

$998

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 3/18

8:00 am-3:01 pm

2 stops25h 01m

Seattle/Tacoma Intl

Tue 5/5

3:00 pm-7:20 am

1 stop23h 20m

$1,016

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Mon 1/19

4:00 pm-9:15 am

1 stop36h 15m

Seattle/Tacoma Intl

Mon 2/2

8:00 pm-9:35 am

1 stop18h 35m

$1,024

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Thu 3/5

1:00 pm-7:58 pm

2 stops25h 58m

Seattle/Tacoma Intl

Mon 3/9

4:50 pm-10:55 am

2 stops24h 05m

$1,052

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Mon 2/23

6:20 am-10:06 pm

2 stops34h 46m

$529

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 21 results
1
2
3

Compare providers for flights from Sydney to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Sydney to Seattle in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Sydney-Seattle flights, users find the pricing of Justfly.com to be most consistent on Cheapflights vs. Justfly.com Users can find the same prices on Sydney-Seattle flight deals on Cheapflights vs. Justfly.com >95% of the time. Price accuracy is based on data collected from Sydney-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Sydney-Seattle flights, Cheapflights users trust Justfly.com the most. Justfly.com has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Sydney-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Sydney to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Sydney 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 Sydney to Seattle

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

Use this chart to determine the optimal time to book a round-trip flight from Sydney to Seattle. Price data was last updated on December 5, 2025.

The best time to book flights from Sydney to Seattle is 39 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Sydney to Seattle?

Currently, June is the cheapest month in which you can book a flight from Sydney to Seattle (average of $704). Flying from Sydney to Seattle in April is currently the most expensive (average of $870). 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 December 12, 2025.
Read through reviews of airlines operating flights from Sydney to Seattle, such as Delta, Hawaiian Airlines, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,007 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.1

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,007 reviews
Delta
7.9
Good
8,007 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.1

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Hawaiian Airlines
7.8
Good
2,817 reviews
Delta
7.9
Good
8,007 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.1

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,095 reviews
Delta
7.9
Good
8,007 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.1

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Air Canada
7.1
Good
10,516 reviews
Delta
7.9
Good
8,007 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.1

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Sydney to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Sydney to Seattle?

    A quick flight from Sydney to Seattle can take about 22h 35m. Asiana Airlines provides one of the quickest options available for as low as $944. There are 7744 mi between Sydney and Seattle.

  • What are the cheapest airlines flying from Sydney to Seattle round-trip?

    Currently priced at $598, Air Canada will fly you from Sydney to Seattle and back. In addition to Air Canada, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Delta - these airlines can fly you to your destination from $794 and $802, respectively. Air Canada is 44% cheaper than the average price of flights available within the next 90 days to this destination.

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

    The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as $379. However, be on the lookout for offers from Air Canada and Hawaiian Airlines, as they are both options that can get you from Sydney to Seattle for a low price.

  • Can I find deals for flights from Sydney to Seattle that include hotel bookings?

    Yes. In addition to deals on Sydney to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Sydney to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sydney to Seattle.

  • Can I find deals for business class flights from Sydney to Seattle?

    Yes. Cheapflights offers flight deals from Sydney 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 Sydney to Seattle?

    Currently, June is the cheapest month in which you can book a flight from Sydney to Seattle (average of $704). Flying from Sydney to Seattle in April is currently the most expensive (average of $870). 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
Tacoma
SeaTac
Lakewood
Olympia
Ocean Shores
Edmonds
Lynnwood
Renton
Puyallup
Kirkland
Tukwila
Kent
Cle Elum
Marysville
Leavenworth
Fife
Aberdeen
Shoreline
Centralia
Federal Way

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Sydney to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
Sydney to Portland flights

Top 4 airlines flying from Sydney to Seattle

Discover the top 4 airlines that operate flights from Sydney 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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$598Average$1,052FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$794Average$1,167FlexibilityNo cancel feeOn-time69%
DeltaCheapest$802Average$1,374FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$917Average$1,517FlexibilityNo cancel feeOn-time85%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.