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New South Wales

$391+ 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 4/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SYD
Feb 13 — Feb 201
Fri 2/13
Fri 2/20
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 January 14, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,062
(Ovago)

One-way from

$391
(Trip.com)

Popular in

December

Cheapest in

August

Average price

$1,302
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. 16% potential increase in price ($204 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($48 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 14, 2026.

This Ovago deal was found by Cheapflights users on 1/13. 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.
Fri 3/1312:50 pm
SEA
-
SYD
2 stops29h 45m
Multiple Airlines
Sun 3/222:00 pm
SYD
-
SEA
2 stops27h 40m
Multiple Airlines
Deal found 1/13$1,062
This Air Canada deal was found by Cheapflights users on 1/13. 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 4/198:00 pm
SEA
-
SYD
1 stop18h 20m
Multiple Airlines
Mon 5/116:00 am
SYD
-
SEA
2 stops20h 15m
Multiple Airlines
Deal found 1/13$1,064
This Air Canada deal was found by Cheapflights users on 1/13. 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
Multiple Airlines
Mon 6/296:00 am
SYD
-
SEA
2 stops20h 17m
Multiple Airlines
Deal found 1/13$1,065
This KAYAK deal was found by Cheapflights users on 1/14. 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.
Thu 1/2210:59 am
SEA
-
SYD
2 stops30h 36m
Multiple Airlines
Thu 1/296:00 am
SYD
-
SEA
2 stops33h 52m
Multiple Airlines
Deal found 1/14$1,066
This oojo deal was found by Cheapflights users on 1/13. 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 2/25:53 pm
SEA
-
SYD
2 stops28h 47m
Qantas Airways
Wed 2/1811:20 am
SYD
-
SEA
1 stop26h 38m
Qantas Airways
Deal found 1/13$1,067
This Air Canada deal was found by Cheapflights users on 1/14. 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 2/83:40 pm
SEA
-
SYD
1 stop22h 55m
Air Canada
Mon 2/239:00 am
SYD
-
SEA
2 stops24h 31m
Air Canada
Deal found 1/14$1,068
This Priceline deal was found by Cheapflights users on 1/13. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/253:40 pm
SEA
-
SYD
1 stop22h 55m
Air Canada
Sun 3/88:00 am
SYD
-
SEA
2 stops25h 01m
Air Canada
Deal found 1/13$1,069
This Air Canada deal was found by Cheapflights users on 1/13. 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 2/179:55 am
SEA
-
SYD
1 stop28h 40m
Multiple Airlines
Tue 3/109:20 pm
SYD
-
SEA
2 stops30h 11m
Multiple Airlines
Deal found 1/13$1,070
This Air Canada deal was found by Cheapflights users on 1/14. 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 2/108:00 pm
SEA
-
SYD
1 stop18h 35m
Multiple Airlines
Tue 3/109:20 pm
SYD
-
SEA
2 stops30h 11m
Multiple Airlines
Deal found 1/14$1,071
This Gurufare deal was found by Cheapflights users on 1/13. 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.
Sun 4/53:40 pm
SEA
-
SYD
1 stop22h 40m
Air New Zealand
Mon 4/209:20 am
SYD
-
SEA
1 stop17h 13m
Air New Zealand
Deal found 1/13$1,072
This Gurufare deal was found by Cheapflights users on 1/14. 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.
Mon 4/138:00 pm
SEA
-
SYD
1 stop18h 20m
Air New Zealand
Sun 4/269:20 am
SYD
-
SEA
1 stop22h 43m
Air New Zealand
Deal found 1/14$1,073
This oojo deal was found by Cheapflights users on 1/13. 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 2/66:00 am
SEA
-
OOL
2 stops38h 05m
Qantas Airways
Fri 2/131:00 pm
OOL
-
SEA
2 stops46h 00m
Qantas Airways
Deal found 1/13$1,368

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 January 14, 2026.
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

Tue 3/3

3:52 pm-8:45 am

2 stops21h 53m

Sydney Kingsford Smith

Tue 3/17

11:45 am-5:00 pm

2 stops23h 15m

$1,112

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Thu 4/9

7:40 am-6:50 pm

1 stop18h 10m

Sydney Kingsford Smith

Tue 4/21

8:45 pm-12:59 am

1 stop21h 14m

$1,163

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 2/1

7:30 pm-9:15 am

1 stop18h 45m

Sydney Kingsford Smith

Sun 2/15

11:20 am-9:01 pm

2 stops28h 41m

$1,164

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 2/15

5:20 pm-9:15 am

1 stop20h 55m

Sydney Kingsford Smith

Wed 3/4

11:20 am-9:01 pm

2 stops28h 41m

$1,165

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Wed 2/4

7:30 pm-9:15 am

1 stop18h 45m

Sydney Kingsford Smith

Sun 2/15

11:50 am-6:03 pm

2 stops25h 13m

$1,175

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 4/13

7:37 pm-6:55 am

1 stop18h 18m

Sydney Kingsford Smith

Tue 4/28

9:30 am-9:06 pm

2 stops28h 36m

$1,175

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 7/13

11:44 am-6:55 am

1 stop26h 11m

Sydney Kingsford Smith

Mon 7/27

9:30 am-9:12 pm

2 stops28h 42m

$1,175

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 2/1

7:30 pm-9:15 am

1 stop18h 45m

Sydney Kingsford Smith

Tue 2/17

11:50 am-6:03 pm

2 stops25h 13m

$1,175

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Wed 2/4

5:12 pm-9:05 am

1 stop20h 53m

Sydney Kingsford Smith

Sun 2/22

2:00 pm-6:26 pm

1 stop23h 26m

$1,175

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 7/13

1:20 pm-6:55 am

1 stop24h 35m

Sydney Kingsford Smith

Sun 7/26

9:30 am-9:12 pm

2 stops28h 42m

$1,175

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/13

Showing 1-10 of 35 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, July is the cheapest month in which you can book a flight from Seattle to New South Wales (average of $507). Flying from Seattle to New South Wales in December is currently the most expensive (average of $845). 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.

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 14, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines, Delta, and Qantas 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.
Alaska Airlines
7.9
Good
11,702 reviews

Boarding

8.1

Overall

7.9

Entertainment

7.0

Food

7.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Alaska Airlines
7.9
Good
11,702 reviews
Alaska Airlines
7.9
Good
11,702 reviews

Boarding

8.1

Overall

7.9

Entertainment

7.0

Food

7.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Delta
7.9
Good
8,040 reviews
Alaska Airlines
7.9
Good
11,702 reviews

Boarding

8.1

Overall

7.9

Entertainment

7.0

Food

7.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Qantas Airways
7.5
Good
970 reviews
Alaska Airlines
7.9
Good
11,702 reviews

Boarding

8.1

Overall

7.9

Entertainment

7.0

Food

7.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
United Airlines
7.4
Good
9,157 reviews
Alaska Airlines
7.9
Good
11,702 reviews

Boarding

8.1

Overall

7.9

Entertainment

7.0

Food

7.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Air Canada
7.1
Good
10,620 reviews
Alaska Airlines
7.9
Good
11,702 reviews

Boarding

8.1

Overall

7.9

Entertainment

7.0

Food

7.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

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 45m. 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?

    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, July is the cheapest month in which you can book a flight from Seattle to New South Wales (average of $507). Flying from Seattle to New South Wales in December is currently the most expensive (average of $845). 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

See prices for flight routes from nearby airports that may be better suited for you.
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Top 9 airlines flying from Seattle to New South Wales

Discover the top 9 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 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
ANACheapest$583Average$615FlexibilityNo cancel feeOn-time80%
Alaska AirlinesCheapest$591Average$1,179FlexibilityNo cancel feeOn-time75%
Philippine AirlinesCheapest$758Average$880FlexibilityNo cancel feeOn-time60%
Air CanadaCheapest$779Average$1,052FlexibilityNo cancel feeOn-time67%
Qantas AirwaysCheapest$789Average$895FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$804Average$976FlexibilityNo cancel feeOn-time71%
Hawaiian AirlinesCheapest$812Average$1,165FlexibilityNo cancel feeOn-time85%
United AirlinesCheapest$830Average$1,064FlexibilityNo cancel feeOn-time69%
DeltaCheapest$842Average$1,193FlexibilityNo cancel feeOn-timeN/A

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