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$442+ 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 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — SEA
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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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 February or March, booked 75 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 May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$849
(American Airlines)

One-way from

$442
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$1,093
Provider with most accurate pricing for Sydney Kingsford Smith-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Sydney Kingsford Smith-Seattle/Tacoma Intl flights.
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From Sydney Kingsford Smith to Seattle/Tacoma Intl
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One-way flight from Sydney Kingsford Smith to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($96 potential increase over avg. RT price).
Search Deals
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 May 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 May 1, 2025.

This American Airlines deal was found by Cheapflights users on 4/29. 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.
Tue 8/59:10 amSYD - SEA
1 stop21h 50mAmerican Airlines
Sun 8/312:32 pmSEA - SYD
1 stop23h 33mAmerican Airlines
Deal found 4/29$849
This Qantas Airways deal was found by Cheapflights users on 4/29. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/49:10 amSYD - SEA
1 stop30h 00mQantas Airways
Tue 9/24:59 pmSEA - SYD
1 stop21h 06mQantas Airways
Deal found 4/29$850
This United Airlines deal was found by Cheapflights users on 4/29. 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.
Mon 8/49:30 amSYD - SEA
2 stops23h 24mUnited Airlines
Mon 9/15:35 pmSEA - SYD
1 stop20h 20mUnited Airlines
Deal found 4/29$865
This Delta deal was found by Cheapflights users on 4/29. 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.
Mon 7/79:25 amSYD - SEA
1 stop28h 00mDelta
Sun 7/2710:15 amSEA - SYD
1 stop27h 20mDelta
Deal found 4/29$874
This oojo deal was found by Cheapflights users on 4/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/207:10 pmSYD - SEA
1 stop31h 00mSingapore Airlines
Fri 11/288:45 amSEA - SYD
1 stop27h 55mSingapore Airlines
Deal found 4/30$1,009
This Cheapflightsfares deal was found by Cheapflights users on 4/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2012:25 pmSYD - SEA
2 stops25h 01mANA
Fri 11/2810:00 amSEA - SYD
2 stops29h 30mANA
Deal found 4/30$1,054
This Philippine Airlines deal was found by Cheapflights users on 4/29. 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 Philippine Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/210:10 amSYD - SEA
1 stop26h 05mPhilippine Airlines
Sun 7/2711:35 pmSEA - SYD
1 stop39h 25mPhilippine Airlines
Deal found 4/29$1,162
This Hawaiian Airlines deal was found by Cheapflights users on 4/30. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/239:40 pmSYD - SEA
1 stop36h 10mHawaiian Airlines
Fri 5/306:25 pmSEA - SYD
1 stop32h 20mHawaiian Airlines
Deal found 4/30$1,180
This Booking.com deal was found by Cheapflights users on 4/30. 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.
Wed 6/1110:10 pmSYD - SEA
1 stop38h 20mChina Airlines
Sun 6/221:10 amSEA - SYD
1 stop40h 35mChina Airlines
Deal found 4/30$1,203
This Japan Airlines deal was found by Cheapflights users on 4/30. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/118:55 amSYD - SEA
2 stops53h 39mJapan Airlines
Wed 6/258:41 amSEA - SYD
2 stops28h 39mJapan Airlines
Deal found 4/30$1,242
This Mytrip deal was found by Cheapflights users on 4/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/141:15 pmSYD - SEA
3 stops27h 55mMultiple Airlines
Sat 5/1710:00 amSEA - SYD
2 stops29h 45mMultiple Airlines
Deal found 4/30$1,292
This Asiana Airlines deal was found by Cheapflights users on 4/30. 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.
Wed 5/149:30 amSYD - SEA
1 stop44h 00mAsiana Airlines
Sat 5/172:15 pmSEA - SYD
1 stop24h 15mAsiana Airlines
Deal found 4/30$1,296

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 May 1, 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

Tue 8/5

9:10 am-2:00 pm

1 stop21h 50m

Seattle/Tacoma Intl

Sun 8/31

2:32 pm-7:05 am

1 stop23h 33m

$849

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Mon 8/4

9:10 am-10:10 pm

1 stop30h 00m

Seattle/Tacoma Intl

Tue 9/2

4:59 pm-7:05 am

1 stop21h 06m

$850

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Mon 8/4

9:30 am-3:54 pm

2 stops23h 24m

Seattle/Tacoma Intl

Mon 9/1

5:35 pm-6:55 am

1 stop20h 20m

$865

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Mon 7/7

9:25 am-10:22 pm

2 stops29h 57m

Seattle/Tacoma Intl

Tue 7/29

1:30 pm-6:35 am

2 stops24h 05m

$874

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 5/14

8:55 pm-2:25 pm

1 stop34h 30m

Seattle/Tacoma Intl

Sat 5/17

10:00 am-7:15 pm

2 stops40h 15m

$1,155

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 7/2

10:10 am-7:15 pm

1 stop26h 05m

Seattle/Tacoma Intl

Sun 7/27

11:35 pm-8:00 am

1 stop39h 25m

$1,162

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Fri 5/23

9:40 pm-4:50 pm

1 stop36h 10m

Seattle/Tacoma Intl

Fri 5/30

6:25 pm-7:45 pm

1 stop32h 20m

$1,180

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 6/11

10:10 pm-7:30 pm

1 stop38h 20m

Seattle/Tacoma Intl

Sun 6/22

1:10 am-10:45 am

1 stop40h 35m

$1,203

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 6/11

8:55 am-9:34 pm

2 stops53h 39m

Seattle/Tacoma Intl

Wed 6/25

8:41 am-6:20 am

2 stops28h 39m

$1,242

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 5/14

1:15 pm-12:10 am

3 stops27h 55m

Seattle/Tacoma Intl

Sat 5/17

10:00 am-8:45 am

2 stops29h 45m

$1,292

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 30 results
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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 May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*2 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 AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Sydney-Seattle flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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 April 25, 2025.

The best time to book flights from Sydney to Seattle is 75 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 $405). 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 May 1, 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 May 1, 2025.
Air Tahiti Nui
8.8
Very good
62 reviews

Entertainment

7.3

Food

7.8

Crew

9.1

Comfort

8.1

Overall

8.8

Boarding

8.7

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
8.8
Very good
62 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Entertainment

7.3

Food

7.8

Crew

9.1

Comfort

8.1

Overall

8.8

Boarding

8.7

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
1,464 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Entertainment

7.3

Food

7.8

Crew

9.1

Comfort

8.1

Overall

8.8

Boarding

8.7

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
732 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Entertainment

7.3

Food

7.8

Crew

9.1

Comfort

8.1

Overall

8.8

Boarding

8.7

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
852 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Entertainment

7.3

Food

7.8

Crew

9.1

Comfort

8.1

Overall

8.8

Boarding

8.7

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.
Asiana Airlines
8.2
Very good
442 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Entertainment

7.3

Food

7.8

Crew

9.1

Comfort

8.1

Overall

8.8

Boarding

8.7

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 $849, American Airlines will fly you from Sydney to Seattle and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Qantas Airways and United Airlines - these airlines can fly you to your destination from $850 and $865, respectively. American Airlines is 24% 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 $548. However, be on the lookout for offers from American 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 $405). 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
Renton
Ocean Shores
Lacey
Leavenworth
Federal Way
Olympia
Shoreline
Cle Elum
Centralia
Kent
Lynnwood
Aberdeen
Shelton
Silverdale
Redmond
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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$673Average$1,215FlexibilityNo cancel feeOn-time69%
DeltaCheapest$870Average$1,392FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$874Average$1,057FlexibilityNo cancel feeOn-time67%
Hawaiian AirlinesCheapest$917Average$1,321FlexibilityNo cancel feeOn-time85%
Qantas AirwaysCheapest$1,058Average$1,630FlexibilityNo cancel feeOn-time74%
Korean AirCheapest$1,207Average$1,256FlexibilityNo cancel feeOn-time81%

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