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$419+ 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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — SEA
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Sydney Kingsford Smith to Seattle/Tacoma Intl are usually found in August or February, booked 52 days in advance, depart on a Saturday or Sunday and return on a Tuesday

Cheap 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 September 11, 2025.

Round-trip from

$693
(Jettzy)

One-way from

$419
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$1,042
From Sydney Kingsford Smith to Seattle/Tacoma Intl
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One-way flight from Sydney Kingsford Smith to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 7% potential increase in price ($89 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 September 11, 2025.

This Jettzy deal was found by Cheapflights users on 9/8. 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 Jettzy is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/172:15 pmSYD - SEA
2 stops22h 27mMultiple Airlines
Sun 10/266:50 pmSEA - SYD
2 stops23h 55mMultiple Airlines
Deal found 9/8$693
This BestPriceTravel deal was found by Cheapflights users on 9/11. 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 10/1710:20 amSYD - SEA
1 stop30h 11mAir Canada
Sun 10/1910:00 amSEA - SYD
1 stop28h 20mAir Canada
Deal found 9/11$743
This Trip.com deal was found by Cheapflights users on 9/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/176:45 pmSYD - SEA
1 stop19h 22mQantas Airways
Sun 10/266:50 pmSEA - SYD
1 stop20h 10mQantas Airways
Deal found 9/8$745
This Gotogate deal was found by Cheapflights users on 9/9. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/49:00 amSYD - SEA
2 stops24h 31mAir Canada
Tue 11/185:50 amSEA - SYD
1 stop32h 45mAir Canada
Deal found 9/9$765
This Booking.com deal was found by Cheapflights users on 9/9. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/710:20 amSYD - SEA
1 stop26h 16mMultiple Airlines
Tue 10/285:50 amSEA - SYD
2 stops40h 25mMultiple Airlines
Deal found 9/9$770
This lol.travel deal was found by Cheapflights users on 9/9. 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.
Fri 10/39:20 amSYD - SEA
1 stop21h 56mAir Canada
Sun 10/192:55 pmSEA - SYD
2 stops26h 45mAir Canada
Deal found 9/9$772
This Netflights deal was found by Cheapflights users on 9/9. 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 Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/711:20 amSYD - SEA
1 stop22h 11mAir Canada
Tue 11/1110:05 amSEA - SYD
1 stop28h 30mAir Canada
Deal found 9/9$783
This Air Canada deal was found by Cheapflights users on 9/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2011:20 amSYD - SEA
1 stop22h 11mAir Canada
Fri 11/288:00 pmSEA - SYD
1 stop39h 55mAir Canada
Deal found 9/10$787

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 September 11, 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

Fri 10/17

10:20 am-6:36 pm

1 stop26h 16m

Seattle/Tacoma Intl

Sun 10/26

8:00 pm-2:40 pm

2 stops24h 40m

$756

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Fri 10/17

7:30 am-2:16 pm

2 stops24h 46m

Seattle/Tacoma Intl

Sun 10/19

2:55 pm-8:20 am

1 stop23h 25m

$760

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Sat 11/15

3:00 pm-2:31 pm

2 stops42h 31m

Seattle/Tacoma Intl

Tue 11/18

8:00 pm-9:35 am

1 stop18h 35m

$770

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Tue 10/7

10:20 am-6:36 pm

1 stop26h 16m

Seattle/Tacoma Intl

Tue 10/28

5:50 am-4:15 pm

2 stops40h 25m

$770

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Fri 10/3

9:20 am-2:16 pm

1 stop21h 56m

Seattle/Tacoma Intl

Sun 10/19

2:55 pm-11:40 am

2 stops26h 45m

$772

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Thu 11/20

11:20 am-10:06 pm

1 stop29h 46m

Seattle/Tacoma Intl

Fri 11/28

8:00 pm-6:55 am

1 stop39h 55m

$786

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Fri 11/7

11:20 am-9:31 am

1 stop17h 11m

Seattle/Tacoma Intl

Tue 11/11

8:00 pm-9:35 am

1 stop18h 35m

$786

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Sat 11/15

3:00 pm-2:31 pm

2 stops42h 31m

Seattle/Tacoma Intl

Tue 11/18

3:40 pm-6:50 pm

2 stops32h 10m

$788

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 10/15

5:20 pm-10:40 am

2 stops35h 20m

$419

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Mon 9/15

9:20 am-10:16 pm

1 stop29h 56m

$467

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 16 results
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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 August 29, 2025.

The best time to book flights from Sydney to Seattle is 52 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, January is the cheapest month in which you can book a flight from Sydney to Seattle (average of $238). Flying from Sydney to Seattle in June is currently the most expensive (average of $388). 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 SYD to SEA?

Find hourly flight availability from Sydney 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 September 11, 2025.

It’s optimal to fly from Sydney to Seattle in the morning. By choosing this option you can save up to 28% on the cost of your flight, compared to a flight at noon.

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 September 11, 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
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
Delta
8.0
Very good
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
Hawaiian Airlines
7.8
Good
2,723 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
United Airlines
7.4
Good
8,937 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
Air Canada
7.1
Good
10,000 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

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 24h 46m. Air Canada provides one of the quickest options available for as low as $760. There are 7744 mi between Sydney and Seattle.

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

    Currently priced at $794, United Airlines will fly you from Sydney to Seattle and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and Air Canada - these airlines can fly you to your destination from $802 and $828, respectively. United Airlines is 28% cheaper than the average price of flights available within the next 90 days to this destination.

  • 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, January is the cheapest month in which you can book a flight from Sydney to Seattle (average of $238). Flying from Sydney to Seattle in June is currently the most expensive (average of $388). 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
Tukwila
Tacoma
Lakewood
Ocean Shores
Lynnwood
Edmonds
Leavenworth
Lacey
Renton
Olympia
Kent
Federal Way
Cle Elum
Puyallup
Chehalis
Kirkland
Issaquah
Aberdeen
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.

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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$794Average$1,215FlexibilityNo cancel feeOn-time69%
DeltaCheapest$802Average$1,374FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$828Average$1,053FlexibilityNo cancel feeOn-time67%
Hawaiian AirlinesCheapest$917Average$1,467FlexibilityNo cancel feeOn-time85%

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