New South Wales

$469+ 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 6/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SYD
Jun 5 — Jun 121
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to New South Wales 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.

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 May 6, 2026.

This flugladen.de deal was found by Cheapflights users on 5/6. 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.
Mon 5/117:20 pm
SEA
-
SYD
1 stop19h 00m
Air Canada
Sun 5/249:20 am
SYD
-
SEA
1 stop17h 45m
Air Canada
Deal found 5/6$990
This Orbitz deal was found by Cheapflights users on 5/5. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/27:20 pm
SEA
-
SYD
1 stop19h 00m
Air Canada
Tue 6/99:20 am
SYD
-
SEA
1 stop17h 45m
Air Canada
Deal found 5/5$1,012
This lol.travel deal was found by Cheapflights users on 5/5. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/107:20 pm
SEA
-
SYD
1 stop19h 00m
Air Canada
Sun 5/247:00 am
SYD
-
SEA
2 stops20h 05m
Air Canada
Deal found 5/5$1,020
This Air Canada deal was found by Cheapflights users on 5/6. 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.
Tue 5/262:55 pm
SEA
-
SYD
1 stop23h 25m
Multiple Airlines
Tue 6/26:00 am
SYD
-
SEA
2 stops21h 05m
Multiple Airlines
Deal found 5/6$1,032
This Air Canada deal was found by Cheapflights users on 5/6. 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 5/117:20 pm
SEA
-
SYD
2 stops23h 35m
Multiple Airlines
Sun 5/249:20 am
SYD
-
SEA
1 stop26h 10m
Multiple Airlines
Deal found 5/6$1,051
This Air Canada deal was found by Cheapflights users on 5/5. 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 6/37:20 pm
SEA
-
SYD
2 stops22h 35m
Multiple Airlines
Mon 6/159:20 am
SYD
-
SEA
1 stop26h 10m
Multiple Airlines
Deal found 5/5$1,052
This Air Canada deal was found by Cheapflights users on 5/5. 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.
Tue 5/197:20 pm
SEA
-
SYD
1 stop19h 00m
Air Canada
Thu 6/49:20 am
SYD
-
SEA
1 stop17h 45m
Air Canada
Deal found 5/5$1,055
This Air Canada deal was found by Cheapflights users on 5/5. 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 6/17:20 pm
SEA
-
SYD
1 stop19h 00m
Air Canada
Mon 6/299:20 am
SYD
-
SEA
1 stop17h 47m
Air Canada
Deal found 5/5$1,063
This oojo deal was found by Cheapflights users on 5/5. 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.
Mon 5/186:40 pm
SEA
-
SYD
1 stop19h 25m
Qantas Airways
Wed 6/35:50 pm
SYD
-
SEA
1 stop20h 59m
Qantas Airways
Deal found 5/5$1,075
This SmartFares deal was found by Cheapflights users on 5/3. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/247:00 am
SEA
-
OOL
2 stops30h 30m
Multiple Airlines
Fri 10/302:30 pm
OOL
-
SEA
2 stops24h 07m
Multiple Airlines
Deal found 5/3$1,291
This SmartFares deal was found by Cheapflights users on 5/1. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/255:55 pm
SEA
-
OOL
2 stops46h 45m
Multiple Airlines
Fri 10/3011:10 am
OOL
-
SEA
2 stops26h 35m
Multiple Airlines
Deal found 5/1$1,319
This BusinessClass deal was found by Cheapflights users on 5/4. 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 6/47:05 pm
SEA
-
OOL
2 stops25h 35m
Multiple Airlines
Thu 6/116:00 am
OOL
-
SEA
2 stops25h 30m
Multiple Airlines
Deal found 5/4$1,387

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 May 6, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,012
(Orbitz)

One-way from

$469
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$1,106
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 ($211 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($50 potential savings vs. average RT price).
Average for round-trip flights in May 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 May 6, 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

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 6/1

7:05 pm-6:55 am

1 stop18h 50m

Sydney Kingsford Smith

Sun 6/14

10:20 am-4:29 pm

1 stop23h 09m

$1,100
Quickest round-trip

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 5/25

7:05 pm-6:55 am

1 stop18h 50m

Sydney Kingsford Smith

Tue 6/16

10:20 am-4:20 pm

1 stop23h 00m

$1,101

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Wed 5/20

5:45 pm-7:00 am

1 stop20h 15m

Sydney Kingsford Smith

Sat 6/6

9:30 am-9:19 pm

2 stops28h 49m

$1,150

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sat 5/16

3:40 pm-7:00 am

2 stops46h 20m

Sydney Kingsford Smith

Thu 5/28

10:20 am-12:34 pm

1 stop19h 14m

$1,169

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Tue 5/26

2:40 pm-7:05 am

1 stop23h 25m

Sydney Kingsford Smith

Tue 6/23

9:10 am-9:58 pm

1 stop29h 48m

$1,175

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sat 6/13

5:20 pm-6:55 am

1 stop20h 35m

Sydney Kingsford Smith

Sat 7/4

9:30 am-11:18 pm

3 stops30h 48m

$1,205

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 8/2

11:02 am-7:00 am

2 stops26h 58m

Sydney Kingsford Smith

Wed 8/19

10:20 am-5:45 pm

2 stops24h 25m

$1,304

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sat 5/9

8:00 am-6:50 pm

1 stop17h 50m

Sydney Kingsford Smith

Sat 5/30

8:45 pm-10:00 am

2 stops30h 15m

$1,423

SeattleCoolangatta

SEA - OOL

SEAOOL

Seattle/Tacoma Intl

Sun 5/17

7:36 pm-10:40 am

2 stops22h 04m

Coolangatta Gold Coast

Sun 6/28

6:00 am-8:53 pm

2 stops31h 53m

$1,444

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Thu 6/11

10:05 am-6:50 am

1 stop27h 45m

Sydney Kingsford Smith

Thu 6/25

9:15 am-8:34 pm

1 stop28h 19m

$1,449

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/1

Showing 1-10 of 27 resultsSorted by cheapest first
1
2
3

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 May 6, 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.
8.3
Very good

Crew

8.7

Boarding

8.5

Overall

8.3

Food

7.7

Entertainment

8.0

Comfort

8.2

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.
8.3
Very good
8.3
Very good

Crew

8.7

Boarding

8.5

Overall

8.3

Food

7.7

Entertainment

8.0

Comfort

8.2

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.
8.3
Very good

Crew

8.7

Boarding

8.5

Overall

8.3

Food

7.7

Entertainment

8.0

Comfort

8.2

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.
8.3
Very good

Crew

8.7

Boarding

8.5

Overall

8.3

Food

7.7

Entertainment

8.0

Comfort

8.2

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.
8.3
Very good

Crew

8.7

Boarding

8.5

Overall

8.3

Food

7.7

Entertainment

8.0

Comfort

8.2

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.
8.3
Very good

Crew

8.7

Boarding

8.5

Overall

8.3

Food

7.7

Entertainment

8.0

Comfort

8.2

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 18h 50m. Fly via 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 May 6, 2026.
AirlineCheapestAverageFlexibilityOn-time
ANACheapest$583Average$655FlexibilityNo cancel feeOn-time80%
Alaska AirlinesCheapest$591Average$1,164FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$778Average$1,058FlexibilityNo cancel feeOn-time67%
Qantas AirwaysCheapest$789Average$888FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$804Average$1,011FlexibilityNo cancel feeOn-time71%
Hawaiian AirlinesCheapest$813Average$1,153FlexibilityNo cancel feeOn-time85%
United AirlinesCheapest$831Average$1,090FlexibilityNo cancel feeOn-time69%
DeltaCheapest$842Average$1,218FlexibilityNo cancel feeOn-timeN/A
Air New ZealandCheapest$947Average$1,220FlexibilityNo cancel feeOn-time78%
Alaska AirlinesCheapest$1,126Average$1,237FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.