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New South Wales

$455+ 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 6/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SYD
Apr 8 — Apr 151
Tue 4/8
Tue 4/15
1 adult, Economy
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Cheap flight deals from Seattle to New South Wales

Keep the following information in mind while searching for Seattle to New South Wales flight deals. Data was last updated April 3, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$914
(Trip.com)

One-way from

$455
(Kiwi.com)

Popular in

December

Cheapest in

March

Average price

$1,120
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 ($121 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 April 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 April 3, 2025.

This Trip.com deal was found by Cheapflights users on 4/1. 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.
Thu 5/156:25 pmSEA - SYD
1 stop27h 15mMultiple Airlines
Thu 5/224:20 pmSYD - SEA
1 stop33h 15mMultiple Airlines
Deal found 4/1$914
This Air Canada deal was found by Cheapflights users on 4/3. 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 8/141:45 pmSEA - SYD
1 stop24h 35mAir Canada
Tue 9/99:20 amSYD - SEA
1 stop21h 56mAir Canada
Deal found 4/3$1,051
This Cheapflightsfares deal was found by Cheapflights users on 4/3. 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.
Wed 11/1210:35 amSEA - SYD
2 stops28h 55mANA
Tue 11/1812:25 pmSYD - SEA
2 stops25h 00mANA
Deal found 4/3$1,105
This Mytrip deal was found by Cheapflights users on 4/1. 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.
Sat 5/178:25 amSEA - SYD
1 stop18h 20mHawaiian Airlines
Sat 5/249:40 pmSYD - SEA
1 stop25h 35mHawaiian Airlines
Deal found 4/1$1,146
This Alaska Airlines deal was found by Cheapflights users on 4/2. 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.
Fri 5/28:15 amSEA - SYD
1 stop18h 30mAlaska Airlines
Fri 5/99:40 pmSYD - SEA
1 stop25h 35mAlaska Airlines
Deal found 4/2$1,156
This oojo deal was found by Cheapflights users on 4/3. 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.
Sun 4/1311:35 pmSEA - SYD
1 stop39h 25mPhilippine Airlines
Sun 4/2710:10 amSYD - SEA
1 stop26h 05mPhilippine Airlines
Deal found 4/3$1,235
This United deal was found by Cheapflights users on 4/2. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/39:45 amSEA - SYD
1 stop28h 10mUnited Airlines
Sun 6/2210:20 amSYD - SEA
1 stop23h 27mUnited Airlines
Deal found 4/2$1,256
This Delta deal was found by Cheapflights users on 4/2. 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 7/2012:00 pmSEA - SYD
1 stop25h 35mDelta
Tue 7/299:25 amSYD - SEA
1 stop22h 15mDelta
Deal found 4/2$1,265
This Emirates deal was found by Cheapflights users on 4/2. 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 Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/175:15 pmSEA - DBO
2 stops54h 05mEmirates
Sat 5/241:25 pmDBO - SEA
2 stops41h 00mEmirates
Deal found 4/2$2,989

Cheapflights Fare Finder

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 April 3, 2025.
Use the filters below to find and compare flights from Seattle to New South Wales that are best for you.

Fly from

Seattle

Fly to

New South Wales

Route

Depart

Return

Price

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Thu 5/15

6:25 pm-2:40 pm

1 stop27h 15m

Sydney Kingsford Smith

Thu 5/22

4:20 pm-8:35 am

1 stop33h 15m

$914

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Thu 8/14

1:45 pm-7:20 am

1 stop24h 35m

Sydney Kingsford Smith

Tue 9/9

9:20 am-2:16 pm

1 stop21h 56m

$1,051

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Wed 5/14

10:00 am-9:25 am

2 stops30h 25m

Sydney Kingsford Smith

Tue 5/27

11:50 am-6:33 pm

2 stops23h 43m

$1,105

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sat 5/17

8:25 am-7:45 pm

1 stop18h 20m

Sydney Kingsford Smith

Sat 5/24

9:40 pm-6:15 am

1 stop25h 35m

$1,146

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Fri 5/2

8:15 am-7:45 pm

1 stop18h 30m

Sydney Kingsford Smith

Fri 5/9

9:40 pm-6:15 am

1 stop25h 35m

$1,156

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 4/13

11:35 pm-8:00 am

1 stop39h 25m

Sydney Kingsford Smith

Sun 4/27

10:10 am-7:15 pm

1 stop26h 05m

$1,235

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Tue 6/3

9:45 am-6:55 am

1 stop28h 10m

Sydney Kingsford Smith

Sun 6/22

10:20 am-4:47 pm

1 stop23h 27m

$1,256

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 7/20

12:00 pm-6:35 am

1 stop25h 35m

Sydney Kingsford Smith

Tue 7/29

9:25 am-2:40 pm

1 stop22h 15m

$1,265

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Wed 4/30

6:08 am-7:05 am

1 stop31h 57m

Sydney Kingsford Smith

Fri 5/2

5:45 pm-10:49 pm

1 stop22h 04m

$1,413

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sat 5/10

6:59 pm-11:45 am

2 stops23h 46m

Sydney Kingsford Smith

Sat 5/24

1:45 pm-6:56 pm

2 stops22h 11m

$1,441

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/3

Showing 1-10 of 27 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.

Cheapflights Insights

Everything you need to know about your flight from Seattle to New South Wales

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 $1,046). 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 April 3, 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 April 3, 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

Crew

9.1

Food

7.8

Boarding

8.7

Overall

8.7

Entertainment

7.2

Comfort

8.0

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
61 reviews
Air Tahiti Nui
8.7
Very good
61 reviews

Crew

9.1

Food

7.8

Boarding

8.7

Overall

8.7

Entertainment

7.2

Comfort

8.0

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
830 reviews
Air Tahiti Nui
8.7
Very good
61 reviews

Crew

9.1

Food

7.8

Boarding

8.7

Overall

8.7

Entertainment

7.2

Comfort

8.0

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

Crew

9.1

Food

7.8

Boarding

8.7

Overall

8.7

Entertainment

7.2

Comfort

8.0

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.
Fiji Airways
8.0
Very good
180 reviews
Air Tahiti Nui
8.7
Very good
61 reviews

Crew

9.1

Food

7.8

Boarding

8.7

Overall

8.7

Entertainment

7.2

Comfort

8.0

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.
Emirates
8.0
Very good
3,193 reviews
Air Tahiti Nui
8.7
Very good
61 reviews

Crew

9.1

Food

7.8

Boarding

8.7

Overall

8.7

Entertainment

7.2

Comfort

8.0

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 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 Alaska Airlines, with whom users have recently found tickets for as low as $560. However, be on the lookout for offers from Philippine 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 - Dubbo and Seattle/Tacoma Intl - Coolangatta Gold Coast.

  • 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 $1,046). 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 April 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$759Average$1,140FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$807Average$1,199FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$832Average$1,065FlexibilityNo cancel feeOn-time67%
Alaska AirlinesCheapest$854Average$1,264FlexibilityNo cancel feeOn-time75%
DeltaCheapest$854Average$1,142FlexibilityNo cancel feeOn-timeN/A
ANACheapest$861Average$1,196FlexibilityNo cancel feeOn-time80%
Qantas AirwaysCheapest$866Average$1,268FlexibilityNo cancel feeOn-time74%
Hawaiian AirlinesCheapest$876Average$1,146FlexibilityNo cancel feeOn-time85%

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