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$497+ 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 7/21. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — SEA
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Sydney Kingsford Smith to Seattle/Tacoma Intl are usually found in February or March, booked 31 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 junio 12, 2025.

Round-trip from

$800
(CheapTicketsDeal)

One-way from

$497
(Cheapflightsfares)

Popular in

December

Cheapest in

February

Average price

$1,064
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. 8% potential increase in price ($105 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($30 potential savings vs. average RT price).
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Average for round-trip flights in June 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 junio 12, 2025.

This CheapTicketsDeal deal was found by Cheapflights users on 6/10. 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 CheapTicketsDeal is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 7/259:40 pmSYD - SEA
1 stop25h 20mAlaska Airlines
vie. 8/18:40 pmSEA - SYD
1 stop30h 05mAlaska Airlines
Deal found 6/10$800
This United Airlines deal was found by Cheapflights users on 6/10. 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.
jue. 6/129:30 amSYD - SEA
2 stops30h 00mUnited Airlines
mié. 6/259:45 amSEA - SYD
1 stop28h 10mUnited Airlines
Deal found 6/10$862
This Delta deal was found by Cheapflights users on 6/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 7/109:25 amSYD - SEA
1 stop22h 18mDelta
jue. 7/317:10 amSEA - SYD
2 stops30h 25mDelta
Deal found 6/12$863
This FlightHub deal was found by Cheapflights users on 6/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/911:35 amSYD - SEA
1 stop27h 00mPhilippine Airlines
mié. 11/1211:55 pmSEA - SYD
1 stop38h 50mPhilippine Airlines
Deal found 6/10$887
This Trip.com deal was found by Cheapflights users on 6/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 7/269:40 pmSYD - SEA
1 stop28h 00mHawaiian Airlines
sáb. 8/28:15 amSEA - SYD
1 stop18h 30mHawaiian Airlines
Deal found 6/11$888
This BYOjet deal was found by Cheapflights users on 6/9. 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 BYOjet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/1511:20 amSYD - SEA
1 stop16h 56mAir Canada
lun. 12/158:20 pmSEA - SYD
1 stop18h 15mAir Canada
Deal found 6/9$898
This Trip.com deal was found by Cheapflights users on 6/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 7/261:45 pmSYD - SEA
2 stops23h 15mMultiple Airlines
sáb. 8/26:55 pmSEA - SYD
1 stop19h 10mMultiple Airlines
Deal found 6/11$939
This Asiana Airlines deal was found by Cheapflights users on 6/10. 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 Asiana Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/710:30 amSYD - SEA
1 stop22h 25mAsiana Airlines
sáb. 11/812:10 amSEA - SYD
1 stop37h 20mAsiana Airlines
Deal found 6/10$962
This KAYAK deal was found by Cheapflights users on 6/10. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/912:25 pmSYD - SEA
2 stops25h 01mANA
jue. 11/133:40 pmSEA - SYD
1 stop23h 50mANA
Deal found 6/10$1,113
This Gotogate deal was found by Cheapflights users on 6/12. 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.
vie. 7/410:10 pmSYD - SEA
1 stop38h 35mChina Airlines
dom. 7/271:40 amSEA - SYD
1 stop40h 05mChina Airlines
Deal found 6/12$1,393
This Virgin Australia deal was found by Cheapflights users on 6/10. 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 Virgin Australia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 6/2410:20 amSYD - SEA
1 stop31h 39mVirgin Australia
dom. 7/137:00 amSEA - SYD
1 stop30h 55mVirgin Australia
Deal found 6/10$1,459
This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 6/279:10 amSYD - SEA
2 stops29h 35mAmerican Airlines
mar. 7/1511:09 amSEA - SYD
2 stops26h 56mAmerican Airlines
Deal found 6/11$1,529

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 junio 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

vie. 7/25

9:40 pm-6:00 am

1 stop25h 20m

Seattle/Tacoma Intl

vie. 8/1

8:40 pm-7:45 pm

1 stop30h 05m

$800

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

jue. 7/10

9:25 am-2:43 pm

1 stop22h 18m

Seattle/Tacoma Intl

jue. 7/31

7:10 am-6:35 am

2 stops30h 25m

$863

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

mar. 9/9

9:30 am-3:52 pm

2 stops23h 22m

Seattle/Tacoma Intl

mar. 10/14

3:28 pm-7:55 am

1 stop22h 27m

$864

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

sáb. 7/26

9:40 pm-8:40 am

1 stop28h 00m

Seattle/Tacoma Intl

sáb. 8/2

8:15 am-7:45 pm

1 stop18h 30m

$888

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

dom. 7/27

9:20 am-9:21 am

1 stop17h 01m

Seattle/Tacoma Intl

dom. 8/3

7:15 pm-11:40 am

2 stops23h 25m

$915

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

sáb. 7/26

1:45 pm-8:00 pm

2 stops23h 15m

Seattle/Tacoma Intl

sáb. 8/2

6:55 pm-7:05 am

1 stop19h 10m

$939

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

mar. 7/1

11:50 am-6:36 pm

2 stops23h 46m

Seattle/Tacoma Intl

mar. 7/8

1:45 pm-9:25 am

2 stops26h 40m

$1,154

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

vie. 6/27

10:10 am-7:15 pm

1 stop26h 05m

Seattle/Tacoma Intl

vie. 7/18

11:35 pm-8:00 am

1 stop39h 25m

$1,284

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

vie. 7/4

10:10 pm-7:45 pm

1 stop38h 35m

Seattle/Tacoma Intl

dom. 7/27

1:40 am-10:45 am

1 stop40h 05m

$1,393

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

mar. 6/24

10:20 am-12:59 am

1 stop31h 39m

Seattle/Tacoma Intl

dom. 7/13

7:00 am-6:55 am

1 stop30h 55m

$1,459

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 25 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 June 9, 2025.

The best time to book flights from Sydney to Seattle is 31 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 July is currently the most expensive (average of $391). 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 junio 12, 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.

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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 junio 12, 2025.
Get a feel of what it's like to fly with Air Tahiti Nui, Korean Air and Japan Airlines from Sydney to Seattle by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Tahiti Nui
8.7
Very good
64 reviews

Overall

8.7

Entertainment

7.3

Food

7.8

Boarding

8.7

Comfort

8.1

Crew

9.0

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Air Tahiti Nui
8.7
Very good
64 reviews
Air Tahiti Nui
8.7
Very good
64 reviews

Overall

8.7

Entertainment

7.3

Food

7.8

Boarding

8.7

Comfort

8.1

Crew

9.0

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Korean Air
8.4
Very good
1,088 reviews
Air Tahiti Nui
8.7
Very good
64 reviews

Overall

8.7

Entertainment

7.3

Food

7.8

Boarding

8.7

Comfort

8.1

Crew

9.0

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
Japan Airlines
8.3
Very good
1,489 reviews
Air Tahiti Nui
8.7
Very good
64 reviews

Overall

8.7

Entertainment

7.3

Food

7.8

Boarding

8.7

Comfort

8.1

Crew

9.0

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
China Airlines
8.3
Very good
738 reviews
Air Tahiti Nui
8.7
Very good
64 reviews

Overall

8.7

Entertainment

7.3

Food

7.8

Boarding

8.7

Comfort

8.1

Crew

9.0

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.
ANA
8.3
Very good
882 reviews
Air Tahiti Nui
8.7
Very good
64 reviews

Overall

8.7

Entertainment

7.3

Food

7.8

Boarding

8.7

Comfort

8.1

Crew

9.0

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

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.

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

    Currently priced at $800, Alaska Airlines will fly you from Sydney to Seattle and back. In addition to Alaska Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and United Airlines - these airlines can fly you to your destination from $863 and $864, respectively. Alaska Airlines is 29% 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 Qantas Airways, with whom users have recently found tickets for as low as $497. However, be on the lookout for offers from United Airlines and Delta, 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, 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 July is currently the most expensive (average of $391). 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 Sydney?

Book flights to Sydney if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Lakewood
Ocean Shores
Lacey
Leavenworth
Federal Way
Lynnwood
Olympia
Shoreline
Kent
Cle Elum
Centralia
Kirkland
Aberdeen
Renton
Shelton
Silverdale
Issaquah

Browse thousands of different options on Cheapflights for your next trip

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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 6 airlines flying from Sydney to Seattle

Discover the top 6 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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$734Average$1,215FlexibilityNo cancel feeOn-time69%
DeltaCheapest$802Average$1,391FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$874Average$1,057FlexibilityNo cancel feeOn-time67%
Hawaiian AirlinesCheapest$917Average$1,328FlexibilityNo cancel feeOn-time85%
Qantas AirwaysCheapest$1,058Average$1,679FlexibilityNo cancel feeOn-time74%
Korean AirCheapest$1,207Average$1,256FlexibilityNo cancel feeOn-time81%

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