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New South Wales

$376+ 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 8/2. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SYD
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
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 July 3, 2025.

Round-trip from

$739
(Alaska Airlines)

One-way from

$376
(Kiwi.com)

Popular in

December

Cheapest in

March

Average price

$1,089
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. 10% potential increase in price ($137 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($31 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 3, 2025.

This Alaska Airlines deal was found by Cheapflights users on 7/1. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/66:45 pmSEA - SYD
1 stop19h 20mAlaska Airlines
Wed 8/279:10 amSYD - SEA
1 stop18h 44mAlaska Airlines
Deal found 7/1$739
This BestPriceTravel deal was found by Cheapflights users on 7/1. 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 BestPriceTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/66:09 pmSEA - SYD
1 stop20h 21mQantas Airways
Thu 8/289:10 amSYD - SEA
1 stop29h 23mQantas Airways
Deal found 7/1$781
This Air Canada deal was found by Cheapflights users on 7/2. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/710:00 amSEA - SYD
1 stop28h 20mAir Canada
Tue 9/169:20 amSYD - SEA
1 stop21h 56mAir Canada
Deal found 7/2$788
This Flighttix deal was found by Cheapflights users on 7/3. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/86:45 amSEA - SYD
1 stop31h 15mUnited Airlines
Thu 8/219:30 amSYD - SEA
2 stops28h 24mUnited Airlines
Deal found 7/3$802
This American Airlines deal was found by Cheapflights users on 7/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/42:30 pmSEA - SYD
1 stop24h 00mAmerican Airlines
Mon 8/189:10 amSYD - SEA
2 stops24h 32mAmerican Airlines
Deal found 7/3$808
This Qantas Airways deal was found by Cheapflights users on 7/2. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/25:59 pmSEA - SYD
1 stop20h 31mMultiple Airlines
Sun 8/249:30 pmSYD - SEA
1 stop17h 42mMultiple Airlines
Deal found 7/2$815
This Trip.com deal was found by Cheapflights users on 7/2. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/166:55 pmSEA - OOL
2 stops34h 10mMultiple Airlines
Sat 8/231:00 pmOOL - SEA
2 stops25h 36mMultiple Airlines
Deal found 7/2$999
This Qantas Airways deal was found by Cheapflights users on 6/30. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/295:15 pmSEA - OOL
2 stops24h 25mQantas Airways
Mon 8/116:40 pmOOL - SEA
2 stops34h 55mQantas Airways
Deal found 6/30$1,039
This United Airlines deal was found by Cheapflights users on 7/2. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/15:14 pmSEA - OOL
2 stops25h 01mUnited Airlines
Wed 8/136:00 amOOL - SEA
2 stops24h 25mUnited Airlines
Deal found 7/2$1,105
This Trip.com deal was found by Cheapflights users on 7/3. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/178:00 amSEA - DBO
2 stops42h 40mMultiple Airlines
Sun 8/244:45 pmDBO - SEA
2 stops35h 09mMultiple Airlines
Deal found 7/3$1,234
This Qantas Airways deal was found by Cheapflights users on 7/2. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/165:15 pmSEA - NTL
2 stops24h 15mMultiple Airlines
Sat 8/2310:05 amNTL - SEA
3 stops27h 19mMultiple Airlines
Deal found 7/2$1,464
This KAYAK deal was found by Cheapflights users on 7/3. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/276:45 amSEA - OOL
2 stops32h 05mAir New Zealand
Sun 8/1011:55 amOOL - SEA
2 stops27h 21mAir New Zealand
Deal found 7/3$1,848

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 July 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

Wed 8/6

6:45 pm-7:05 am

1 stop19h 20m

Sydney Kingsford Smith

Wed 8/27

9:10 am-10:54 am

1 stop18h 44m

$739

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Wed 8/6

6:09 pm-7:30 am

1 stop20h 21m

Sydney Kingsford Smith

Thu 8/28

9:10 am-9:33 pm

1 stop29h 23m

$781

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 9/7

10:00 am-7:20 am

1 stop28h 20m

Sydney Kingsford Smith

Tue 9/16

9:20 am-2:16 pm

1 stop21h 56m

$788

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Fri 8/8

6:45 am-7:00 am

1 stop31h 15m

Sydney Kingsford Smith

Thu 8/21

9:30 am-8:54 pm

2 stops28h 24m

$802

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 8/4

2:30 pm-7:30 am

1 stop24h 00m

Sydney Kingsford Smith

Mon 8/18

9:10 am-4:42 pm

2 stops24h 32m

$808

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sat 8/2

5:59 pm-7:30 am

1 stop20h 31m

Sydney Kingsford Smith

Sun 8/24

9:30 pm-10:12 pm

1 stop17h 42m

$815

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 8/4

7:10 am-6:35 am

2 stops30h 25m

Sydney Kingsford Smith

Mon 8/18

9:25 am-4:38 pm

2 stops24h 13m

$836

SeattleCoolangatta

SEA - OOL

SEAOOL

Seattle/Tacoma Intl

Sat 8/16

6:55 pm-10:05 pm

2 stops34h 10m

Coolangatta Gold Coast

Sat 8/23

1:00 pm-9:36 pm

2 stops25h 36m

$999

SeattleCoolangatta

SEA - OOL

SEAOOL

Seattle/Tacoma Intl

Tue 7/29

5:15 pm-10:40 am

2 stops24h 25m

Coolangatta Gold Coast

Mon 8/11

6:40 pm-12:35 pm

2 stops34h 55m

$1,039

SeattleCoolangatta

SEA - OOL

SEAOOL

Seattle/Tacoma Intl

Fri 8/1

5:14 pm-11:15 am

2 stops25h 01m

Coolangatta Gold Coast

Wed 8/13

6:00 am-1:25 pm

2 stops24h 25m

$1,105

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

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.

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 $1,040). Flying from Seattle to New South Wales in December is currently the most expensive (average of $1,630). 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 July 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.

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 July 3, 2025.
Peruse reviews from past customers who have flown with China Airlines, Alaska Airlines, and Delta 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.
China Airlines
8.3
Very good
744 reviews

Boarding

8.3

Crew

8.5

Overall

8.3

Entertainment

8.0

Comfort

8.0

Food

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver
China Airlines
8.3
Very good
744 reviews
China Airlines
8.3
Very good
744 reviews

Boarding

8.3

Crew

8.5

Overall

8.3

Entertainment

8.0

Comfort

8.0

Food

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver
Alaska Airlines
8.0
Very good
10,000 reviews
China Airlines
8.3
Very good
744 reviews

Boarding

8.3

Crew

8.5

Overall

8.3

Entertainment

8.0

Comfort

8.0

Food

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver
Delta
8.0
Very good
7,982 reviews
China Airlines
8.3
Very good
744 reviews

Boarding

8.3

Crew

8.5

Overall

8.3

Entertainment

8.0

Comfort

8.0

Food

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver
Air New Zealand
8.0
Very good
486 reviews
China Airlines
8.3
Very good
744 reviews

Boarding

8.3

Crew

8.5

Overall

8.3

Entertainment

8.0

Comfort

8.0

Food

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver
Qantas Airways
7.5
Good
868 reviews
China Airlines
8.3
Very good
744 reviews

Boarding

8.3

Crew

8.5

Overall

8.3

Entertainment

8.0

Comfort

8.0

Food

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver

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 $376. However, be on the lookout for offers from Qantas Airways and American Airlines, 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 $1,040). Flying from Seattle to New South Wales in December is currently the most expensive (average of $1,630). 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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$792Average$1,085FlexibilityNo cancel feeOn-time74%
ANACheapest$794Average$1,085FlexibilityNo cancel feeOn-time80%
American AirlinesCheapest$807Average$1,173FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$833Average$1,060FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$844Average$1,143FlexibilityNo cancel feeOn-time69%
Hawaiian AirlinesCheapest$858Average$1,147FlexibilityNo cancel feeOn-time85%
DeltaCheapest$865Average$1,157FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$889Average$1,248FlexibilityNo cancel feeOn-time75%

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