New South Wales

$427+ 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 5/24. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SYD
May 24 — May 311
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Cheap 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 24, 2026.

This KAYAK deal was found by Cheapflights users on 4/21. 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.
Tue 8/256:01 pm
SEA
-
OOL
2 stops24h 29m
Multiple Airlines
Mon 9/712:30 pm
OOL
-
SEA
2 stops24h 12m
Multiple Airlines
Deal found 4/21$972
This Ovago deal was found by Cheapflights users on 4/19. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1711:03 pm
SEA
-
OOL
2 stops43h 27m
Multiple Airlines
Thu 8/2712:30 pm
OOL
-
SEA
2 stops22h 56m
Multiple Airlines
Deal found 4/19$984
This Trip.com deal was found by Cheapflights users on 4/21. 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.
Mon 5/1111:06 am
SEA
-
SYD
2 stops31h 44m
Multiple Airlines
Thu 5/281:15 pm
SYD
-
SEA
3 stops37h 51m
Multiple Airlines
Deal found 4/21$1,041
This lastminute.com deal was found by Cheapflights users on 4/24. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/34:30 pm
SEA
-
SYD
1 stop33h 40m
ANA
Tue 5/198:55 pm
SYD
-
SEA
1 stop34h 30m
ANA
Deal found 4/24$1,054
This BusinessClass deal was found by Cheapflights users on 4/19. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/256:10 pm
SEA
-
OOL
2 stops24h 20m
Multiple Airlines
Thu 7/2312:30 pm
OOL
-
SEA
2 stops22h 40m
Multiple Airlines
Deal found 4/19$1,060
This Expedia deal was found by Cheapflights users on 4/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/32:55 pm
SEA
-
SYD
1 stop23h 25m
Air Canada
Tue 5/199:20 am
SYD
-
SEA
1 stop22h 00m
Air Canada
Deal found 4/22$1,072
This Trip.com deal was found by Cheapflights users on 4/22. 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.
Wed 5/2010:45 am
SEA
-
SYD
1 stop27h 35m
Air Canada
Wed 5/279:20 am
SYD
-
SEA
1 stop22h 00m
Air Canada
Deal found 4/22$1,078
This Air Canada deal was found by Cheapflights users on 4/22. 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.
Mon 5/187:20 pm
SEA
-
SYD
1 stop19h 00m
Air Canada
Wed 6/39:20 am
SYD
-
SEA
1 stop17h 45m
Air Canada
Deal found 4/22$1,084
This United Airlines deal was found by Cheapflights users on 4/20. 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.
Sun 4/2611:35 am
SEA
-
SYD
1 stop26h 20m
United Airlines
Sun 5/109:30 am
SYD
-
SEA
2 stops28h 36m
United Airlines
Deal found 4/20$1,089
This United Airlines deal was found by Cheapflights users on 4/22. 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.
Sun 5/37:36 pm
SEA
-
SYD
1 stop18h 19m
United Airlines
Tue 5/199:30 am
SYD
-
SEA
2 stops28h 36m
United Airlines
Deal found 4/22$1,090
This flugladen.de deal was found by Cheapflights users on 4/21. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/267:08 pm
SEA
-
SYD
1 stop30h 42m
Multiple Airlines
Sun 5/108:45 pm
SYD
-
SEA
1 stop21h 08m
Multiple Airlines
Deal found 4/21$1,091
This United Airlines deal was found by Cheapflights users on 4/21. 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.
Sun 5/316:48 pm
SEA
-
SYD
1 stop19h 07m
United Airlines
Tue 6/1610:20 am
SYD
-
SEA
1 stop19h 14m
United Airlines
Deal found 4/21$1,093

Find 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 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$972
(KAYAK)

One-way from

$427
(Trip.com)

Popular in

December

Cheapest in

August

Average price

$1,065
Provider with most accurate pricing for Seattle/Tacoma Intl-Sydney Kingsford Smith flight deals.
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Sydney Kingsford Smith flights.
From Seattle/Tacoma Intl to New South Wales
One-way flight from Seattle/Tacoma Intl to New South Wales
Highest demand for flights based on searches. 16% potential increase in price ($209 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($49 potential savings vs. average RT price).
Average for round-trip flights in April 2026

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 24, 2026.
Use the filters below to find and compare flights from Seattle to New South Wales that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleCoolangatta

SEA - OOL

SEAOOL

Seattle/Tacoma Intl

Tue 8/25

6:01 pm-11:30 am

2 stops24h 29m

Coolangatta Gold Coast

Mon 9/7

12:30 pm-7:42 pm

2 stops24h 12m

$972

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Wed 5/20

4:32 pm-7:00 am

1 stop21h 28m

Sydney Kingsford Smith

Tue 6/2

9:30 am-2:36 pm

1 stop22h 06m

$1,100

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 5/31

6:48 pm-6:55 am

1 stop19h 07m

Sydney Kingsford Smith

Thu 6/18

10:20 am-2:30 pm

1 stop21h 10m

$1,142

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 5/11

12:51 pm-7:00 am

2 stops25h 09m

Sydney Kingsford Smith

Thu 5/28

10:20 am-3:55 pm

2 stops22h 35m

$1,155

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Thu 6/4

1:30 pm-6:55 am

1 stop24h 25m

Sydney Kingsford Smith

Thu 6/18

10:20 am-4:20 pm

1 stop23h 00m

$1,200

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sat 8/1

11:02 am-7:00 am

2 stops26h 58m

Sydney Kingsford Smith

Fri 8/14

9:30 am-9:11 pm

2 stops28h 41m

$1,204

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Thu 5/21

11:02 am-7:00 am

2 stops26h 58m

Sydney Kingsford Smith

Thu 5/28

9:30 am-3:55 pm

2 stops23h 25m

$1,204

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sat 8/1

10:50 am-6:50 am

2 stops27h 00m

Sydney Kingsford Smith

Fri 8/14

9:15 am-4:52 pm

2 stops24h 37m

$1,205

SeattleCoolangatta

SEA - OOL

SEAOOL

Seattle/Tacoma Intl

Sun 6/7

6:48 pm-12:25 pm

2 stops24h 37m

Coolangatta Gold Coast

Sun 6/14

7:05 am-2:30 pm

2 stops24h 25m

$1,237

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Tue 9/29

8:52 pm-6:50 pm

1 stop28h 58m

Sydney Kingsford Smith

Tue 11/17

9:40 pm-8:00 pm

1 stop17h 20m

$1,287

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/23

Showing 1-10 of 33 resultsSorted by cheapest first
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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

How far ahead should I book a flight from Seattle to New South Wales?

Booking 23 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to New South Wales. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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 $142). Flying from Seattle to New South Wales in January is currently the most expensive (average of $825). 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.

How much does it cost to fly round-trip from Seattle to New South Wales?

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 24, 2026.
Peruse reviews from past customers who have flown with ANA,Alaska Airlines, andQantas Airways 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.
8.4
Very good

Crew

8.7

Food

7.8

Entertainment

8.0

Comfort

8.2

Overall

8.4

Boarding

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

EWR - NRT

Flights were on time and flew ahead of schedule. Seating was comfortable. Meal quality left a little to be desired, and service was mostly mechanical.
8.4
Very good
8.4
Very good

Crew

8.7

Food

7.8

Entertainment

8.0

Comfort

8.2

Overall

8.4

Boarding

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

EWR - NRT

Flights were on time and flew ahead of schedule. Seating was comfortable. Meal quality left a little to be desired, and service was mostly mechanical.
8.4
Very good

Crew

8.7

Food

7.8

Entertainment

8.0

Comfort

8.2

Overall

8.4

Boarding

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

EWR - NRT

Flights were on time and flew ahead of schedule. Seating was comfortable. Meal quality left a little to be desired, and service was mostly mechanical.
8.4
Very good

Crew

8.7

Food

7.8

Entertainment

8.0

Comfort

8.2

Overall

8.4

Boarding

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

EWR - NRT

Flights were on time and flew ahead of schedule. Seating was comfortable. Meal quality left a little to be desired, and service was mostly mechanical.
8.4
Very good

Crew

8.7

Food

7.8

Entertainment

8.0

Comfort

8.2

Overall

8.4

Boarding

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

EWR - NRT

Flights were on time and flew ahead of schedule. Seating was comfortable. Meal quality left a little to be desired, and service was mostly mechanical.
8.4
Very good

Crew

8.7

Food

7.8

Entertainment

8.0

Comfort

8.2

Overall

8.4

Boarding

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

EWR - NRT

Flights were on time and flew ahead of schedule. Seating was comfortable. Meal quality left a little to be desired, and service was mostly mechanical.

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.

  • How long is the flight from Seattle to New South Wales?

    There are many flights that can get you from Seattle to New South Wales in 19h. Fly via Air Canada, United Airlines, or Qantas Airways to get the fastest option. The distance between Seattle and New South Wales is about 7744 mi. This flight may include one or multiple stops.

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

    The cheapest airline one-way is ANA, with whom users have recently found tickets for as low as $253. However, be on the lookout for offers from Air Canada and Qantas Airways, 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?

  • 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 $142). Flying from Seattle to New South Wales in January is currently the most expensive (average of $825). 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

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Top 10 airlines flying from Seattle to New South Wales

Discover the top 10 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 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
ANACheapest$583Average$655FlexibilityNo cancel feeOn-time80%
Alaska AirlinesCheapest$591Average$1,162FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$778Average$1,058FlexibilityNo cancel feeOn-time67%
Qantas AirwaysCheapest$789Average$888FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$804Average$988FlexibilityNo cancel feeOn-time71%
Hawaiian AirlinesCheapest$813Average$1,155FlexibilityNo cancel feeOn-time85%
United AirlinesCheapest$833Average$1,111FlexibilityNo cancel feeOn-time69%
DeltaCheapest$842Average$1,227FlexibilityNo cancel feeOn-timeN/A
Air New ZealandCheapest$947Average$1,220FlexibilityNo cancel feeOn-time78%
Alaska AirlinesCheapest$1,126Average$1,268FlexibilityNo cancel feeOn-timeN/A

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