HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seattle

$628+ 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 7/6. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — SEA
Jul 10 — Jul 171
Fri 7/10
Fri 7/17
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.

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 June 10, 2026.

This lol.travel deal was found by Cheapflights users on 6/5. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/279:20 am
SYD
-
SEA
1 stop26h 12m
Air Canada
Tue 8/1110:45 am
SEA
-
SYD
1 stop27h 35m
Air Canada
Deal found 6/5$814
This lol.travel deal was found by Cheapflights users on 6/5. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/279:20 am
SYD
-
SEA
1 stop26h 12m
Multiple Airlines
Tue 8/117:20 pm
SEA
-
SYD
2 stops23h 20m
Multiple Airlines
Deal found 6/5$829
This Air Canada deal was found by Cheapflights users on 6/7. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/89:20 am
SYD
-
SEA
1 stop17h 32m
Air Canada
Tue 10/63:00 pm
SEA
-
SYD
1 stop23h 20m
Air Canada
Deal found 6/7$850
This Air Canada deal was found by Cheapflights users on 6/7. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/86:00 am
SYD
-
SEA
2 stops20h 52m
Multiple Airlines
Tue 10/63:00 pm
SEA
-
SYD
1 stop23h 20m
Multiple Airlines
Deal found 6/7$859
This Air Canada deal was found by Cheapflights users on 6/6. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:00 am
SYD
-
SEA
2 stops20h 52m
Multiple Airlines
Wed 9/233:00 pm
SEA
-
SYD
1 stop23h 20m
Multiple Airlines
Deal found 6/6$870
This Air Canada deal was found by Cheapflights users on 6/6. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/128:30 am
SYD
-
SEA
2 stops19h 47m
Air Canada
Thu 11/193:15 pm
SEA
-
SYD
1 stop23h 20m
Air Canada
Deal found 6/6$872

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 June 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$814
(lol.travel)

One-way from

$628
(Delta)

Popular in

January

Cheapest in

August

Average price

$1,086
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. 6% potential increase in price ($69 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($23 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
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 June 10, 2026.
Use the filters below to find and compare flights from Sydney to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Mon 7/13

9:30 am-9:10 pm

2 stops28h 40m

Seattle/Tacoma Intl

Tue 7/28

5:04 pm-7:00 am

1 stop20h 56m

$961

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Thu 8/27

9:30 am-11:16 am

1 stop18h 46m

Seattle/Tacoma Intl

Sat 9/5

11:00 pm-6:55 am

2 stops38h 55m

$961

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Mon 7/13

9:30 am-9:10 pm

2 stops28h 40m

Seattle/Tacoma Intl

Thu 7/30

2:33 pm-7:00 am

2 stops23h 27m

$1,010

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 7/8

9:30 am-5:59 pm

2 stops25h 29m

Seattle/Tacoma Intl

Wed 7/22

7:54 pm-6:55 am

2 stops42h 01m

$1,012

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Sun 8/9

9:30 am-2:39 pm

1 stop22h 09m

Seattle/Tacoma Intl

Mon 9/7

4:58 pm-7:00 am

1 stop21h 02m

$1,023

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Tue 9/8

9:15 am-10:16 pm

2 stops30h 01m

Seattle/Tacoma Intl

Tue 10/6

1:30 pm-7:50 am

2 stops24h 20m

$1,066
Quickest round-trip

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Sat 8/15

9:30 am-11:34 am

1 stop19h 04m

Seattle/Tacoma Intl

Thu 9/10

4:30 pm-7:00 am

1 stop21h 30m

$1,073

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Sun 8/9

8:45 pm-11:52 am

2 stops32h 07m

Seattle/Tacoma Intl

Mon 9/7

7:20 am-6:50 pm

1 stop18h 30m

$1,186

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Tue 7/7

9:15 am-8:27 pm

1 stop28h 12m

Seattle/Tacoma Intl

Wed 7/22

10:05 am-6:50 am

1 stop27h 45m

$1,205

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 6/24

9:30 am-9:40 am

2 stops41h 10m

Seattle/Tacoma Intl

Sun 7/19

7:54 pm-6:55 am

2 stops42h 01m

$1,373

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/6

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

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 June.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Sydney-Seattle flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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?

The best time to book flights from Sydney to Seattle is 67 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, August is the cheapest month in which you can book a flight from Sydney to Seattle (average of $888). Flying from Sydney to Seattle in January is currently the most expensive (average of $1,294). 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 much does it cost to fly round-trip from Sydney to Seattle?

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 June 10, 2026.
Read through reviews of airlines operating flights from Sydney to Seattle, such as United Airlines and Air Canada. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,804 reviews

Boarding

7.7

Entertainment

7.1

Overall

7.4

Food

6.6

Crew

8.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
United Airlines
7.4
Good
9,804 reviews
United Airlines
7.4
Good
9,804 reviews

Boarding

7.7

Entertainment

7.1

Overall

7.4

Food

6.6

Crew

8.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
Air Canada
7.1
Good
11,154 reviews
United Airlines
7.4
Good
9,804 reviews

Boarding

7.7

Entertainment

7.1

Overall

7.4

Food

6.6

Crew

8.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.

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 28h 40m. United Airlines provides one of the quickest options available for as low as $961. There are 7744 mi between Sydney and Seattle.

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

    Currently priced at $828, 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. Check Cheapflights for deals on United Airlines for as low as $871. Air Canada is 21% 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 Hawaiian Airlines and Air Canada, 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, August is the cheapest month in which you can book a flight from Sydney to Seattle (average of $888). Flying from Sydney to Seattle in January is currently the most expensive (average of $1,294). 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
SeaTac
Tacoma
Lacey
Ocean Shores
Leavenworth
Olympia
Edmonds
Snoqualmie
Tumwater
Tukwila
Puyallup
Kent
Lynnwood
Renton
Ellensburg
Fife
Lakewood
Issaquah
Marysville
Shoreline

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.

Top 2 airlines flying from Sydney to Seattle

Discover the top 2 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 June 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$828Average$1,062FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$871Average$1,161FlexibilityNo cancel feeOn-time69%

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.