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New South Wales

$387+ Cheap flights from Seattle (SEA) to New South Wales

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 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SYD
Feb 3 — Feb 101
Mon 2/3
Mon 2/10
1 adult, Economy
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Cheap flight deals from Seattle to New South Wales

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to New South Wales (AUNSW). 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 January 29, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$902
(Air Canada)

One-way from

$387
(Kiwi.com)

Popular in

December

Cheapest in

March

Average price

$1,184
Provider with most accurate pricing for Seattle/Tacoma Intl-Sydney Kingsford Smith flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Sydney Kingsford Smith flights.
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From Seattle/Tacoma Intl to New South Wales
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One-way flight from Seattle/Tacoma Intl to New South Wales
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Highest demand for flights based on searches. 9% potential increase in price ($120 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in January 2025
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Find flight deals from Seattle to New South Wales

Cheapest flights from Seattle to New South Wales
Explore the most affordable flight options available from Seattle to New South Wales. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2025.

This Air Canada deal was found by Cheapflights users on 1/29. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/53:05 pmSEA - SYD
2 stops32h 00mAir Canada
Tue 3/187:30 amSYD - SEA
2 stops25h 00mAir Canada
Deal found 1/29$902
This Alaska Airlines deal was found by Cheapflights users on 1/28. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/38:15 amSEA - SYD
1 stop18h 30mAlaska Airlines
Sun 5/189:40 pmSYD - SEA
1 stop27h 55mAlaska Airlines
Deal found 1/28$903
This Mytrip deal was found by Cheapflights users on 1/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/249:48 amSEA - SYD
3 stops42h 02mMultiple Airlines
Mon 3/316:00 amSYD - SEA
2 stops31h 09mMultiple Airlines
Deal found 1/29$904
This Hawaiian Airlines deal was found by Cheapflights users on 1/28. 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.
Mon 2/37:00 amSEA - SYD
1 stop17h 45mHawaiian Airlines
Fri 3/79:40 pmSYD - SEA
1 stop20h 50mHawaiian Airlines
Deal found 1/28$905
This Gurufare deal was found by Cheapflights users on 1/28. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/144:30 pmSEA - SYD
1 stop33h 45mANA
Tue 5/278:55 pmSYD - SEA
1 stop34h 30mANA
Deal found 1/28$916
This American Airlines deal was found by Cheapflights users on 1/29. 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.
Wed 2/56:00 amSEA - SYD
1 stop32h 00mAmerican Airlines
Tue 3/411:15 amSYD - SEA
2 stops24h 49mAmerican Airlines
Deal found 1/29$943
This United Airlines deal was found by Cheapflights users on 1/28. 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.
Sat 3/17:32 pmSEA - SYD
1 stop18h 43mUnited Airlines
Fri 3/2111:20 amSYD - SEA
2 stops25h 18mUnited Airlines
Deal found 1/28$960
This Delta deal was found by Cheapflights users on 1/28. 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.
Sun 2/162:00 pmSEA - SYD
1 stop23h 35mDelta
Sat 2/222:15 pmSYD - SEA
1 stop38h 50mDelta
Deal found 1/28$969
This Mytrip deal was found by Cheapflights users on 1/28. 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.
Fri 3/147:45 amSEA - OOL
2 stops21h 20mMultiple Airlines
Fri 3/216:00 amOOL - SEA
3 stops30h 09mMultiple Airlines
Deal found 1/28$994
This oojo deal was found by Cheapflights users on 1/28. 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.
Fri 4/1111:30 pmSEA - SYD
1 stop39h 30mPhilippine Airlines
Sun 4/2010:15 amSYD - SEA
1 stop26h 05mPhilippine Airlines
Deal found 1/28$1,080
This United Airlines deal was found by Cheapflights users on 1/28. 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 3/105:40 pmSEA - OOL
2 stops25h 40mUnited Airlines
Mon 3/176:00 amOOL - SEA
2 stops22h 50mUnited Airlines
Deal found 1/28$1,221
This American Airlines deal was found by Cheapflights users on 1/29. 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.
Thu 7/245:45 pmSEA - OOL
2 stops23h 55mAmerican Airlines
Mon 7/287:00 amOOL - SEA
2 stops26h 58mAmerican Airlines
Deal found 1/29$1,398

Find flights from Seattle to New South Wales within your budget

Customize your flight search to find flights from Seattle to New South Wales 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 January 29, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Wed 3/5

3:05 pm-6:05 pm

2 stops32h 00m

Sydney Kingsford Smith

Tue 3/18

7:30 am-2:30 pm

2 stops25h 00m

$902

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sat 5/3

8:15 am-7:45 pm

1 stop18h 30m

Sydney Kingsford Smith

Sun 5/18

9:40 pm-8:35 am

1 stop27h 55m

$903

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 3/24

9:48 am-9:50 pm

3 stops42h 02m

Sydney Kingsford Smith

Mon 3/31

6:00 am-7:09 pm

2 stops31h 09m

$904

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Wed 5/14

4:30 pm-7:15 pm

1 stop33h 45m

Sydney Kingsford Smith

Tue 5/27

8:55 pm-2:25 pm

1 stop34h 30m

$916

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Tue 2/25

4:20 pm-7:45 pm

1 stop32h 25m

Sydney Kingsford Smith

Sun 3/9

9:40 pm-6:20 am

1 stop26h 40m

$921

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Tue 3/18

2:07 pm-9:00 am

2 stops24h 53m

Sydney Kingsford Smith

Wed 4/2

10:10 am-10:36 pm

1 stop30h 26m

$944

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Wed 4/2

11:30 pm-9:00 am

1 stop39h 30m

Sydney Kingsford Smith

Wed 4/16

10:15 am-7:20 pm

1 stop26h 05m

$951

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sat 3/1

7:32 pm-9:15 am

1 stop18h 43m

Sydney Kingsford Smith

Fri 3/21

11:20 am-6:38 pm

2 stops25h 18m

$960

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 2/16

1:30 pm-8:35 am

2 stops24h 05m

Sydney Kingsford Smith

Sat 2/22

2:15 pm-10:05 am

1 stop38h 50m

$969

SeattleCoolangatta

SEA - OOL

SEAOOL

Seattle/Tacoma Intl

Fri 3/14

7:45 am-10:05 pm

2 stops21h 20m

Coolangatta Gold Coast

Fri 3/21

6:00 am-7:09 pm

3 stops30h 09m

$994

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

Showing 1-10 of 26 results
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Best time to book a flight from Seattle to New South Wales

Have a flexible travel schedule? Discover the best time to fly to New South Wales from Seattle 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.

Travel insights for flights from Seattle to New South Wales

Get recent, data-driven insights about flights from Seattle to New South Wales including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Seattle to New South Wales?

Currently, February is the cheapest month in which you can book a flight from Seattle to New South Wales (average of $1,051). Flying from Seattle to New South Wales in December is currently the most expensive (average of $1,643). 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 SEA to NSW?

Find hourly flight availability from Seattle to New South Wales. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 29, 2025.

When flying from Seattle to New South Wales, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in New South Wales by month

Plan your trip to New South Wales by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in New South Wales ranges from 2.0 - 5.1 inches per month. March is typically the wettest month, when rainfall can reach 5.1 in. September is typically the driest time to visit New South Wales when rainfall is around 2.0 in.

Temperature in New South Wales by month

Plan your trip to New South Wales by taking into account the average temperature totals by month.

If weather is an important factor for your trip to New South Wales, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing New South Wales

Get insights into the airlines that provide service to New South Wales. 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 New South Wales. Reviews last updated January 29, 2025.
Peruse reviews from past customers who have flown with Air Tahiti Nui, ANA and China Airlines from Seattle to New South Wales to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Air Tahiti Nui
8.7
Very good
61 reviews

Comfort

8.0

Overall

8.7

Boarding

8.7

Entertainment

7.2

Food

7.8

Crew

9.1

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
61 reviews
Air Tahiti Nui
8.7
Very good
61 reviews

Comfort

8.0

Overall

8.7

Boarding

8.7

Entertainment

7.2

Food

7.8

Crew

9.1

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
8.4
Very good
844 reviews
Air Tahiti Nui
8.7
Very good
61 reviews

Comfort

8.0

Overall

8.7

Boarding

8.7

Entertainment

7.2

Food

7.8

Crew

9.1

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
8.2
Very good
727 reviews
Air Tahiti Nui
8.7
Very good
61 reviews

Comfort

8.0

Overall

8.7

Boarding

8.7

Entertainment

7.2

Food

7.8

Crew

9.1

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.

Emirates
8.1
Very good
3,332 reviews
Air Tahiti Nui
8.7
Very good
61 reviews

Comfort

8.0

Overall

8.7

Boarding

8.7

Entertainment

7.2

Food

7.8

Crew

9.1

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.

Fiji Airways
8.0
Very good
186 reviews
Air Tahiti Nui
8.7
Very good
61 reviews

Comfort

8.0

Overall

8.7

Boarding

8.7

Entertainment

7.2

Food

7.8

Crew

9.1

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 Seattle to New South Wales. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Seattle to New South Wales?

    For a flight from Seattle to New South Wales, you will be flying from Seattle/Tacoma Intl. Seattle/Tacoma Intl (SEA) is just 11.4 mi from the center of the city.

  • What are the cheapest airlines to fly from Seattle to New South Wales one-way?

    The cheapest airline one-way is Hawaiian Airlines, with whom users have recently found tickets for as low as $399. However, be on the lookout for offers from Alaska Airlines and Air Canada, as they are both options that can get you from Seattle to New South Wales for a low price.

  • What are the most popular routes from Seattle to New South Wales?

    The most popular flight routes from Seattle to New South Wales are Seattle/Tacoma Intl - Sydney Kingsford Smith, Seattle/Tacoma Intl - Coolangatta Gold Coast and Seattle/Tacoma Intl - Dubbo.

  • Can I find deals for flights from Seattle to New South Wales that include hotel bookings?

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

  • How can I find direct flights from Seattle to New South Wales?

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

  • Can I find deals for business class flights from Seattle to New South Wales?

    Yes. Cheapflights offers flight deals from Seattle to New South Wales 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 Seattle to New South Wales?

    Currently, February is the cheapest month in which you can book a flight from Seattle to New South Wales (average of $1,051). Flying from Seattle to New South Wales in December is currently the most expensive (average of $1,643). 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.

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Alternative routes for Seattle to New South Wales

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Top 8 airlines flying from Seattle to New South Wales

Discover the top 8 airlines that operate flights from Seattle to New South Wales. 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 January 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$759Average$1,125FlexibilityNo cancel feeOn-time69%
ANACheapest$767Average$1,196FlexibilityNo cancel feeOn-time80%
Air CanadaCheapest$801Average$1,080FlexibilityNo cancel feeOn-time67%
DeltaCheapest$839Average$1,125FlexibilityNo cancel feeOn-timeN/A
Qantas AirwaysCheapest$866Average$1,301FlexibilityNo cancel feeOn-time74%
Hawaiian AirlinesCheapest$881Average$1,141FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$911Average$1,251FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$941Average$1,232FlexibilityNo cancel feeOn-time71%
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