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 50m. Fly via Air Canada, Delta, or United Airlines 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.

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.

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).

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 - Newcastle Williamtown.

What are the most popular airlines that fly from Seattle to New South Wales?

United Airlines, Air Canada and Alaska Airlines are the most popular airlines when flying from Seattle to New South Wales.

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.

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.

$377+ Flights from Seattle to New South Wales

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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 December 23, 2025.

Wed 12/3110:05 amSEA - SYD

1 stop28h 30mAir Canada

Tue 2/1011:20 amSYD - SEA

1 stop16h 55mAir Canada

Deal found 12/22

$1,047

Wed 12/318:00 pmSEA - SYD

2 stops26h 40mMultiple Airlines

Tue 2/108:00 amSYD - SEA

2 stops20h 15mMultiple Airlines

Deal found 12/21

$1,083

Sat 12/278:00 pmSEA - SYD

1 stop18h 35mAir Canada

Sat 1/177:15 pmSYD - SEA

2 stops33h 16mAir Canada

Deal found 12/21

$1,145

Mon 12/298:00 pmSEA - SYD

2 stops28h 40mMultiple Airlines

Mon 1/129:30 pmSYD - SEA

2 stops30h 45mMultiple Airlines

Deal found 12/21

$1,288

Sun 12/287:12 pmSEA - SYD

1 stop40h 08mUnited Airlines

Wed 12/318:30 amSYD - SEA

2 stops27h 22mUnited Airlines

Deal found 12/22

$1,290

Mon 12/295:00 amSEA - SYD

1 stop30h 20mUnited Airlines

Wed 12/318:30 amSYD - SEA

2 stops35h 29mUnited Airlines

Deal found 12/22

$1,298

Mon 12/298:00 pmSEA - SYD

1 stop18h 35mAir Canada

Mon 1/123:00 pmSYD - SEA

2 stops37h 15mAir Canada

Deal found 12/21

$1,300

Sun 12/2811:06 amSEA - SYD

1 stop25h 19mMultiple Airlines

Wed 12/3111:20 amSYD - SEA

1 stop32h 22mMultiple Airlines

Deal found 12/22

$1,353

Wed 12/248:00 pmSEA - SYD

1 stop18h 35mMultiple Airlines

Mon 12/298:30 amSYD - SEA

2 stops20h 01mMultiple Airlines

Deal found 12/21

$1,437

Wed 12/248:00 pmSEA - SYD

1 stop18h 35mAir Canada

Sat 12/274:00 pmSYD - SEA

1 stop17h 31mAir Canada

Deal found 12/22

$1,459

Sat 12/275:05 pmSEA - OOL

2 stops54h 35mAir New Zealand

Sat 1/37:35 pmOOL - SEA

2 stops44h 31mAir New Zealand

Deal found 12/22

$2,991

Best flights from Seattle to New South Wales
Discover carefully curated flight deals from Seattle to New South Wales that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 23, 2025.

Sat 1/319:55 amSEA - SYD

1 stop28h 40mAir Canada

Sat 2/77:15 pmSYD - SEA

2 stops43h 01mAir Canada

Deal found 12/22

$1,145

Mon 2/25:40 pmSEA - SYD

1 stop19h 50mDelta

Tue 2/1710:40 amSYD - SEA

1 stop23h 04mDelta

Deal found 12/22

$1,152

Mon 2/25:12 pmSEA - SYD

1 stop20h 53mUnited Airlines

Tue 2/1712:10 pmSYD - SEA

1 stop18h 08mUnited Airlines

Deal found 12/22

$1,152

Tue 1/67:00 amSEA - SYD

1 stop17h 45mMultiple Airlines

Tue 1/279:40 pmSYD - SEA

1 stop19h 37mMultiple Airlines

Deal found 12/20

$1,161

Thu 2/264:50 pmSEA - OOL

2 stops27h 50mQantas Airways

Sat 3/710:25 amOOL - SEA

2 stops26h 28mQantas Airways

Deal found 12/23

$1,210

Thu 2/2612:32 pmSEA - OOL

3 stops31h 33mAir New Zealand

Sat 3/78:20 amOOL - SEA

3 stops25h 54mAir New Zealand

Deal found 12/23

$1,653

Sat 2/218:45 amSEA - NTL

2 stops59h 55mSingapore Airlines

Wed 2/253:45 pmNTL - SEA

2 stops34h 25mSingapore Airlines

Deal found 12/19

$2,036

Sun 2/17:30 pmSEA - SYD

1 stop18h 45mUnited Airlines

Sun 2/1511:50 amSYD - SEA

2 stops25h 13mUnited Airlines

Deal found 12/21

$1,152

Sun 2/12:02 pmSEA - SYD

1 stop21h 48mDelta

Sun 2/1510:40 amSYD - SEA

2 stops20h 53mDelta

Deal found 12/21

$1,161

Sat 1/178:00 pmSEA - NTL

2 stops41h 15mMultiple Airlines

Sat 1/244:55 pmNTL - SEA

2 stops48h 11mMultiple Airlines

Deal found 12/20

$1,267

Wed 2/45:12 pmSEA - SYD

1 stop20h 53mUnited Airlines

Wed 2/1812:10 pmSYD - SEA

1 stop18h 08mUnited Airlines

Deal found 12/21

$1,152

Sun 2/11:38 pmSEA - SYD

2 stops23h 52mDelta

Wed 2/1810:40 amSYD - SEA

1 stop18h 37mDelta

Deal found 12/21

$1,161

Sun 2/15:12 pmSEA - SYD

1 stop20h 53mUnited Airlines

Mon 2/1612:10 pmSYD - SEA

1 stop18h 08mUnited Airlines

Deal found 12/22

$1,156

Thu 2/267:05 pmSEA - OOL

2 stops28h 00mMultiple Airlines

Sat 3/72:50 pmOOL - SEA

3 stops45h 07mMultiple Airlines

Deal found 12/23

$1,379

Mon 2/234:50 pmSEA - DBO

2 stops25h 10mQantas Airways

Fri 2/2710:15 amDBO - SEA

2 stops27h 42mQantas Airways

Deal found 12/20

$1,528

Tue 2/35:12 pmSEA - SYD

1 stop20h 53mUnited Airlines

Tue 2/1712:10 pmSYD - SEA

1 stop18h 08mUnited Airlines

Deal found 12/22

$1,156

Sun 2/17:30 pmSEA - SYD

1 stop18h 45mUnited Airlines

Tue 2/172:00 pmSYD - SEA

1 stop20h 41mUnited Airlines

Deal found 12/21

$1,156

Sat 1/316:00 amSEA - OOL

2 stops40h 10mQantas Airways

Wed 2/42:50 pmOOL - SEA

2 stops39h 39mQantas Airways

Deal found 12/20

$1,632

Sat 1/1712:35 pmSEA - NTL

3 stops37h 40mAir New Zealand

Sat 1/246:45 amNTL - SEA

3 stops33h 27mAir New Zealand

Deal found 12/20

$2,627

Last-minute flights from Seattle to New South Wales
Discover last-minute flight deals from Seattle to New South Wales. Data last updated December 23, 2025 and is based on user searches.

Wed 12/3110:05 amSEA - SYD

1 stop28h 30mAir Canada

Tue 2/1011:20 amSYD - SEA

1 stop16h 55mAir Canada

Deal found 12/22

$1,047

Wed 12/318:00 pmSEA - SYD

2 stops26h 40mMultiple Airlines

Tue 2/108:00 amSYD - SEA

2 stops20h 15mMultiple Airlines

Deal found 12/21

$1,083

Thu 1/13:40 pmSEA - SYD

2 stops28h 35mMultiple Airlines

Sat 1/316:20 amSYD - SEA

2 stops21h 55mMultiple Airlines

Deal found 12/22

$1,123

Sun 1/118:00 pmSEA - SYD

2 stops23h 40mAir Canada

Sun 1/2511:20 amSYD - SEA

1 stop17h 11mAir Canada

Deal found 12/21

$1,118

Tue 1/138:00 pmSEA - SYD

2 stops25h 40mMultiple Airlines

Tue 1/2711:20 amSYD - SEA

1 stop17h 11mMultiple Airlines

Deal found 12/22

$1,119

Sat 1/178:00 pmSEA - NTL

2 stops41h 15mMultiple Airlines

Sat 1/244:55 pmNTL - SEA

2 stops48h 11mMultiple Airlines

Deal found 12/20

$1,267

Tue 1/208:00 pmSEA - SYD

2 stops25h 40mAir Canada

Tue 2/311:20 amSYD - SEA

1 stop26h 56mAir Canada

Deal found 12/21

$1,067

Tue 1/208:00 pmSEA - SYD

2 stops23h 40mAir Canada

Tue 1/278:30 amSYD - SEA

2 stops20h 01mAir Canada

Deal found 12/21

$1,082

Sat 1/319:55 amSEA - SYD

2 stops37h 10mAir Canada

Sun 2/1511:20 amSYD - SEA

1 stop16h 55mAir Canada

Deal found 12/22

$1,122

Sat 1/3112:59 pmSEA - SYD

1 stop23h 26mMultiple Airlines

Sat 2/145:45 pmSYD - SEA

1 stop22h 13mMultiple Airlines

Deal found 12/21

$1,124

Sat 1/318:00 pmSEA - SYD

1 stop18h 35mAir Canada

Sat 2/711:20 amSYD - SEA

1 stop26h 56mAir Canada

Deal found 12/22

$1,132

Sat 1/316:00 amSEA - OOL

2 stops43h 45mQantas Airways

Wed 2/44:55 pmOOL - SEA

2 stops37h 34mQantas Airways

Deal found 12/21

$1,632

One-way flights from Seattle to New South Wales
Search for one-way flight options from Seattle to New South Wales. Find affordable one-way fares based on user searches. Data last updated December 23, 2025.

Sun 3/810:30 pmSEA - SYD

1 stop41h 20mPhilippine Airlines

Deal found 12/21

$377

Sat 2/2811:32 amSEA - SYD

1 stop24h 53mMultiple Airlines

Deal found 12/21

$483

Fri 2/279:28 amSEA - SYD

1 stop26h 57mMultiple Airlines

Deal found 12/21

$484

Thu 3/59:28 amSEA - SYD

1 stop26h 57mMultiple Airlines

Deal found 12/21

$488

Sun 3/110:03 amSEA - SYD

2 stops52h 47mMultiple Airlines

Deal found 12/21

$501

Mon 3/94:45 pmSEA - SYD

1 stop33h 30mANA

Deal found 12/21

$502

Mon 3/96:24 pmSEA - SYD

2 stops45h 26mMultiple Airlines

Deal found 12/21

$505

Sun 2/18:00 pmSEA - SYD

1 stop18h 35mAir Canada

Deal found 12/21

$516

Wed 3/1110:30 pmSEA - SYD

2 stops40h 45mMultiple Airlines

Deal found 12/21

$517

Mon 12/298:00 pmSEA - SYD

2 stops27h 40mMultiple Airlines

Deal found 12/21

$530

Sat 12/2711:30 pmSEA - NTL

2 stops41h 05mMultiple Airlines

Deal found 12/20

$1,232

Find flight deals from Seattle to New South Wales

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$1,033 (Kiwi.com)
One-way from	$377 (SmartFares)
Popular in	December
Cheapest in	August
Average price	$1,565

Provider with most accurate pricing for Seattle/Tacoma Intl-Sydney Kingsford Smith flight deals.

Search Deals

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

Search Deals

One-way flight from Seattle/Tacoma Intl to New South Wales

Search Deals

Highest demand for flights based on searches. 15% potential increase in price ($196 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($46 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Cheapflights Fare Finder

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

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sat 1/31

9:55 am-9:35 am

1 stop28h 40m

Sydney Kingsford Smith

Sat 2/7

7:15 pm-7:16 pm

2 stops43h 01m

$1,145

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 2/2

5:40 pm-8:30 am

1 stop19h 50m

Sydney Kingsford Smith

Tue 2/17

10:40 am-2:44 pm

1 stop23h 04m

$1,152

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 2/2

5:12 pm-9:05 am

1 stop20h 53m

Sydney Kingsford Smith

Tue 2/17

12:10 pm-11:18 am

1 stop18h 08m

$1,152

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

11:50 am-6:03 pm

2 stops25h 13m

$1,152

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Wed 2/4

5:12 pm-9:05 am

1 stop20h 53m

Sydney Kingsford Smith

Wed 2/18

12:10 pm-11:18 am

1 stop18h 08m

$1,152

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 2/1

5:12 pm-9:05 am

1 stop20h 53m

Sydney Kingsford Smith

Mon 2/16

12:10 pm-11:18 am

1 stop18h 08m

$1,156

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Tue 2/3

5:12 pm-9:05 am

1 stop20h 53m

Sydney Kingsford Smith

Tue 2/17

12:10 pm-11:18 am

1 stop18h 08m

$1,156

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

2:00 pm-3:41 pm

1 stop20h 41m

$1,156

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Tue 1/6

7:00 am-7:45 pm

1 stop17h 45m

Sydney Kingsford Smith

Tue 1/27

9:40 pm-10:17 pm

1 stop19h 37m

$1,161

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 2/1

2:02 pm-6:50 am

1 stop21h 48m

Sydney Kingsford Smith

Sun 2/15

10:40 am-12:33 pm

2 stops20h 53m

$1,161

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Showing 1-10 of 31 results

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 $518). Flying from Seattle to New South Wales in December is currently the most expensive (average of $851). 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?

It’s optimal to fly from Seattle to New South Wales in the evening. By choosing this option you can save up to 16% on the cost of your flight, compared to a flight in the morning.

What is the cheapest day to fly from Seattle to New South Wales?

Travelers seeking maximum savings on their Seattle to New South Wales flight should consider departing on Tuesday evenings when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing New South Wales

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

8.0

Very good

11,517 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.

Alaska Airlines

8.0

Very good

11,517 reviews

Alaska Airlines

8.0

Very good

11,517 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Sep 2025

SEA - MKE

Delta

7.9

Good

8,015 reviews

Alaska Airlines

8.0

Very good

11,517 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Sep 2025

SEA - MKE

Qantas Airways

7.5

Good

949 reviews

Alaska Airlines

8.0

Very good

11,517 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Sep 2025

SEA - MKE

United Airlines

7.4

Good

9,107 reviews

Alaska Airlines

8.0

Very good

11,517 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Sep 2025

SEA - MKE

Air Canada

7.1

Good

10,551 reviews

Alaska Airlines

8.0

Very good

11,517 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Sep 2025

SEA - MKE

Related info for your journey

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 50m. Fly via Air Canada, Delta, or United Airlines 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 - Newcastle Williamtown.
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 $518). Flying from Seattle to New South Wales in December is currently the most expensive (average of $851). 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

Alternative routes for Seattle to New South Wales

Complete your trip

New South Wales car rentals

Sydney Kingsford Smith Airport car rentals

Newcastle Williamtown Airport car rentals

Ballina Byron Airport car rentals

Wagga Wagga Forrest Hill Airport car rentals

Dubbo Airport car rentals

Tamworth Airport car rentals

Taree Airport car rentals

Parkes Airport car rentals

Sydney car rentals

Port Macquarie car rentals

Lismore car rentals

Top 9 airlines flying from Seattle to New South Wales

Airline	Cheapest	Average	Flexibility	On-time
ANA	Cheapest$583	Average$615	FlexibilityNo cancel fee	On-time80%
Alaska Airlines	Cheapest$591	Average$1,181	FlexibilityNo cancel fee	On-time75%
Philippine Airlines	Cheapest$758	Average$921	FlexibilityNo cancel fee	On-time60%
Air Canada	Cheapest$779	Average$1,053	FlexibilityNo cancel fee	On-time67%
Qantas Airways	Cheapest$789	Average$894	FlexibilityNo cancel fee	On-time74%
American Airlines	Cheapest$804	Average$976	FlexibilityNo cancel fee	On-time71%
Hawaiian Airlines	Cheapest$812	Average$1,165	FlexibilityNo cancel fee	On-time85%
United Airlines	Cheapest$830	Average$1,098	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$842	Average$1,169	FlexibilityNo cancel fee	On-timeN/A

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$377+ 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 3/8. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from Seattle to New South Wales

Cheapest flights from Seattle to New South WalesExplore 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 December 23, 2025.

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 December 23, 2025.

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 December 23, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

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

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.

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?

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 December 23, 2025.

What is the cheapest day to fly from Seattle to New South Wales?

Use this chart to determine the cheapest time to fly round-trip from Seattle to New South Wales. Price data was last updated on December 16, 2024.

Reviews of airlines servicing New South Wales

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.

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?

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

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

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?

How can I find direct flights from Seattle to New South Wales?

Can I find deals for business class flights from Seattle to New South Wales?

What is the cheapest month to book a flight from Seattle to New South Wales?

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.

Alternative routes for Seattle to New South Wales

See prices for flight routes from nearby airports that may be better suited for you.

Top 9 airlines flying from Seattle to New South Wales

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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 December 23, 2025.