How long is the flight from Seattle to Australia?

United Airlines, Delta, and Air Canada can get you from Seattle to Australia in just under 20h 20m. Your travel time can differ by up to 18h 15m. There are 11822 km between Seattle and Australia. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops. Find deals

What are the cheapest airlines to fly from Seattle to Australia one-way?

To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at $679. Delta flights start at $679 while deals on Qantas Airways start at $819 one-way. Find deals

In terms of precipitation, rainfall in Australia ranges from 50.0 - 130.0 inches per month. March is typically the wettest month, when rainfall can reach 130.0 mm. September is typically the driest time to visit Australia when rainfall is around 50.0 mm. Find deals

If weather is an important factor for your trip to Australia, 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 22.0 C. Travellers hoping to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 11.0 C).

What are the most popular routes from Seattle to Australia?

Most travellers choose Seattle/Tacoma Intl - Sydney Kingsford Smith, Seattle/Tacoma Intl - Melbourne or Seattle/Tacoma Intl - Brisbane when deciding on the best route from Seattle to Australia.

What airport do you fly from for flights from Seattle to Australia?

Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to Australia. Seattle/Tacoma Intl is conveniently located just 18.4 km from Seattle’s city centre.

Can I find deals for flights from Seattle to Australia that include hotel bookings?

Yes. In addition to deals on Seattle to Australia flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Seattle to Australia?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Australia.

Can I find deals for business class flights from Seattle to Australia?

Yes. Cheapflights offers flight deals from Seattle to Australia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$578+ Flights from Seattle to Australia

Cheap flight deals from Seattle to Australia

Round-trip from	$1,260
One-way from	$578
Popular in	December
Cheapest in	August
Average price	$1,392

Air Canada
4/3-18/3
2 total stops
49h 36m total
Seattle to Australia

Search Deals

Philippine Airlines
29/3
1 total stop
40h 40m total
Seattle to Australia

Search Deals

Highest demand for flights based on searches. 13% potential increase in price ($372 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($72 potential savings vs. average return price).

Search Deals

Average for round-trip flights in November 2025

Search Deals

Find flight deals from Seattle to Australia

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to Australia
Explore the most affordable flight options available from Seattle to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 November 2025.

Tue 2/1220:00SEA - BNE

1 stop18h 45mMultiple Airlines

Fri 12/1206:10BNE - SEA

2 stops21h 21mMultiple Airlines

Deal found 13/11$1,300

Wed 19/1117:59SEA - BNE

1 stop20h 21mDelta

Wed 26/1111:05BNE - SEA

1 stop27h 51mDelta

Deal found 11/11$1,321

Wed 12/1110:19SEA - BNE

1 stop28h 01mDelta

Wed 26/1111:05BNE - SEA

1 stop21h 39mDelta

Deal found 12/11$1,323

Thu 20/1121:45SEA - BNE

1 stop40h 35mDelta

Wed 26/1111:05BNE - SEA

1 stop19h 34mDelta

Deal found 11/11$1,332

Thu 27/1120:00SEA - BNE

1 stop18h 45mMultiple Airlines

Sun 30/1118:30BNE - SEA

2 stops33h 01mMultiple Airlines

Deal found 13/11$1,338

Thu 20/1121:45SEA - BNE

1 stop40h 35mDelta

Fri 28/1110:40BNE - SEA

2 stops30h 40mDelta

Deal found 11/11$1,340

Sun 16/1106:20SEA - BNE

1 stop28h 40mAmerican Airlines

Sun 23/1109:40BNE - SEA

1 stop21h 29mAmerican Airlines

Deal found 12/11$1,444

Thu 11/1215:40SEA - BNE

1 stop23h 05mAir Canada

Thu 18/1210:45BNE - SEA

1 stop21h 46mAir Canada

Deal found 13/11$1,480

Sat 15/1115:40SEA - BNE

1 stop23h 05mAir Canada

Tue 25/1110:45BNE - SEA

1 stop16h 46mAir Canada

Deal found 13/11$1,486

Wed 31/1206:00SEA - SYD

1 stop32h 00mQantas Airways

Tue 10/207:05SYD - SEA

2 stops24h 24mQantas Airways

Deal found 12/11$1,508

Tue 18/1115:50SEA - SYD

1 stop19h 20mQantas Airways

Thu 4/1217:50SYD - SEA

2 stops39h 34mQantas Airways

Deal found 14/11$1,540

Fri 14/1121:30SEA - SYD

1 stop41h 20mMultiple Airlines

Fri 21/1117:00SYD - SEA

2 stops22h 23mMultiple Airlines

Deal found 14/11$1,611

Best flights from Seattle to Australia
Discover carefully curated flight deals from Seattle to Australia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 14 November 2025.

Tue 3/217:10SEA - BNE

1 stop20h 20mUnited Airlines

Sat 14/211:40BNE - SEA

1 stop27h 21mUnited Airlines

Deal found 13/11$1,323

Fri 20/211:17SEA - BNE

1 stop27h 03mDelta

Sun 1/310:40BNE - SEA

1 stop27h 57mDelta

Deal found 12/11$1,323

Wed 4/207:00SEA - SYD

1 stop17h 45mAlaska Airlines

Tue 17/221:40SYD - SEA

2 stops28h 12mAlaska Airlines

Deal found 13/11$1,770

Sun 15/305:50SEA - ADL

2 stops38h 35mAir Canada

Thu 19/306:10ADL - SEA

2 stops33h 26mAir Canada

Deal found 11/11$1,802

Mon 2/210:05SEA - MCY

2 stops33h 50mMultiple Airlines

Sat 7/212:00MCY - SEA

2 stops39h 31mMultiple Airlines

Deal found 13/11$1,935

Thu 8/117:53SEA - ADL

2 stops25h 17mQantas Airways

Thu 15/106:35ADL - SEA

2 stops24h 24mQantas Airways

Deal found 11/11$2,135

Sun 19/416:30SEA - PER

1 stop35h 10mQatar Airways

Thu 23/415:40PER - SEA

1 stop36h 05mQatar Airways

Deal found 12/11$2,158

Sun 19/419:55SEA - PER

2 stops35h 45mCathay Pacific

Wed 22/400:10PER - SEA

1 stop25h 00mCathay Pacific

Deal found 11/11$2,252

Wed 4/217:10SEA - HBA

3 stops33h 35mAir New Zealand

Wed 18/206:05HBA - SEA

3 stops32h 11mAir New Zealand

Deal found 13/11$2,377

Fri 6/217:45SEA - BNE

1 stop20h 35mDelta

Sun 15/210:40BNE - SEA

1 stop26h 03mDelta

Deal found 13/11$1,323

Sun 1/209:25SEA - BNE

1 stop28h 05mUnited Airlines

Tue 10/211:40BNE - SEA

1 stop22h 04mUnited Airlines

Deal found 13/11$1,323

Sun 15/309:45SEA - ADL

1 stop29h 35mSingapore Airlines

Thu 19/318:35ADL - SEA

1 stop31h 05mSingapore Airlines

Deal found 11/11$2,797

Fri 6/219:30SEA - BNE

1 stop18h 00mUnited Airlines

Sat 14/211:40BNE - SEA

1 stop27h 21mUnited Airlines

Deal found 13/11$1,323

Fri 6/216:55SEA - BNE

2 stops21h 25mDelta

Wed 11/211:05BNE - SEA

2 stops25h 24mDelta

Deal found 13/11$1,329

Thu 5/209:25SEA - BNE

1 stop28h 05mUnited Airlines

Thu 12/211:40BNE - SEA

1 stop17h 38mUnited Airlines

Deal found 13/11$1,323

Tue 3/217:10SEA - BNE

1 stop20h 20mUnited Airlines

Fri 13/211:40BNE - SEA

1 stop17h 38mUnited Airlines

Deal found 13/11$1,323

Wed 4/207:00SEA - SYD

1 stop17h 45mAlaska Airlines

Thu 19/221:40SYD - SEA

1 stop21h 00mAlaska Airlines

Deal found 13/11$1,770

Wed 4/220:00SEA - HBA

2 stops43h 15mMultiple Airlines

Wed 18/206:05HBA - SEA

2 stops31h 52mMultiple Airlines

Deal found 13/11$1,943

Thu 5/208:40SEA - BNE

2 stops28h 50mUnited Airlines

Tue 10/211:40BNE - SEA

1 stop17h 50mUnited Airlines

Deal found 13/11$1,329

Thu 5/207:00SEA - SYD

1 stop17h 45mAlaska Airlines

Thu 19/221:40SYD - SEA

2 stops28h 12mAlaska Airlines

Deal found 13/11$1,770

Tue 3/207:15SEA - SYD

1 stop30h 15mDelta

Tue 17/214:15SYD - SEA

1 stop23h 28mDelta

Deal found 13/11$1,762

Sat 31/108:40SEA - BNE

2 stops28h 50mUnited Airlines

Mon 9/211:40BNE - SEA

1 stop17h 50mUnited Airlines

Deal found 13/11$1,329

Sat 31/107:00SEA - SYD

1 stop17h 45mAlaska Airlines

Tue 17/221:40SYD - SEA

2 stops28h 12mAlaska Airlines

Deal found 13/11$1,770

Sun 1/206:00SEA - MCY

2 stops44h 25mQantas Airways

Sat 7/215:35MCY - SEA

2 stops38h 54mQantas Airways

Deal found 13/11$2,202

Tue 20/108:25SEA - PER

2 stops35h 30mQatar Airways

Sat 31/115:55PER - SEA

1 stop35h 45mQatar Airways

Deal found 13/11$2,222

Sun 15/309:45SEA - PER

2 stops27h 45mMultiple Airlines

Sun 5/404:55PER - SEA

2 stops29h 35mMultiple Airlines

Deal found 12/11$2,062

Sun 15/319:05SEA - PER

2 stops60h 50mCathay Pacific

Sat 4/400:10PER - SEA

2 stops48h 47mCathay Pacific

Deal found 12/11$2,318

Mon 2/209:49SEA - SYD

1 stop27h 41mDelta

Wed 18/210:40SYD - SEA

2 stops25h 05mDelta

Deal found 13/11$1,762

Sat 31/112:25SEA - BNE

2 stops25h 05mUnited Airlines

Fri 13/211:40BNE - SEA

1 stop17h 38mUnited Airlines

Deal found 13/11$1,329

Thu 5/207:00SEA - SYD

1 stop17h 45mAlaska Airlines

Fri 13/221:40SYD - SEA

1 stop26h 45mAlaska Airlines

Deal found 13/11$1,770

Last-minute flights from Seattle to Australia
Discover last-minute flight deals from Seattle to Australia. Data last updated 14 November 2025 and is based on user searches.

Sat 15/1115:40SEA - BNE

1 stop23h 05mAir Canada

Tue 25/1110:45BNE - SEA

1 stop16h 46mAir Canada

Deal found 13/11$1,486

Sun 16/1106:20SEA - BNE

1 stop28h 40mAmerican Airlines

Sun 23/1109:40BNE - SEA

1 stop21h 29mAmerican Airlines

Deal found 12/11$1,444

Wed 19/1114:11SEA - BNE

1 stop24h 09mDelta

Sun 23/1110:40BNE - SEA

1 stop22h 04mDelta

Deal found 11/11$1,321

Wed 19/1112:40SEA - BNE

1 stop25h 40mDelta

Wed 26/1111:05BNE - SEA

2 stops25h 34mDelta

Deal found 11/11$1,329

Thu 20/1121:45SEA - BNE

1 stop40h 35mDelta

Wed 26/1111:05BNE - SEA

1 stop19h 34mDelta

Deal found 11/11$1,332

Thu 27/1120:00SEA - BNE

1 stop18h 45mMultiple Airlines

Sun 30/1118:30BNE - SEA

2 stops33h 01mMultiple Airlines

Deal found 13/11$1,338

Tue 2/1220:00SEA - BNE

1 stop18h 45mMultiple Airlines

Fri 12/1206:10BNE - SEA

2 stops21h 21mMultiple Airlines

Deal found 13/11$1,300

Tue 2/1217:11SEA - BNE

1 stop20h 19mUnited Airlines

Fri 12/1211:40BNE - SEA

1 stop21h 49mUnited Airlines

Deal found 13/11$1,323

Thu 4/1205:00SEA - MEL

2 stops33h 30mUnited Airlines

Thu 18/1213:00MEL - SEA

1 stop22h 52mUnited Airlines

Deal found 10/11$1,676

Thu 11/1215:40SEA - BNE

1 stop23h 05mAir Canada

Thu 18/1210:45BNE - SEA

1 stop21h 46mAir Canada

Deal found 13/11$1,480

Sat 13/1223:59SEA - MEL

2 stops39h 01mUnited Airlines

Thu 25/1213:00MEL - SEA

1 stop22h 52mUnited Airlines

Deal found 12/11$1,677

Tue 30/1213:35SEA - MEL

1 stop25h 25mUnited Airlines

Mon 2/211:30MEL - SEA

2 stops28h 42mUnited Airlines

Deal found 12/11$1,669

One-way flights from Seattle to Australia
Search for one-way flight options from Seattle to Australia. Find affordable one-way fares based on user searches. Data last updated 14 November 2025.

Sun 29/323:05SEA - SYD

1 stop40h 40mPhilippine Airlines

Deal found 13/11$578

Thu 27/1121:30SEA - SYD

1 stop41h 20mPhilippine Airlines

Deal found 12/11$598

Fri 28/1121:30SEA - SYD

1 stop41h 20mPhilippine Airlines

Deal found 12/11$636

Mon 22/1217:54SEA - BNE

1 stop19h 36mUnited Airlines

Deal found 13/11$679

Tue 17/311:25SEA - BNE

2 stops50h 55mDelta

Deal found 13/11$703

Tue 17/315:40SEA - BNE

1 stop23h 05mAir Canada

Deal found 13/11$708

Thu 27/1121:30SEA - SYD

2 stops40h 45mMultiple Airlines

Deal found 12/11$789

Sun 10/523:05SEA - SYD

2 stops39h 50mMultiple Airlines

Deal found 13/11$798

Sat 28/300:10SEA - SYD

2 stops38h 10mMultiple Airlines

Deal found 13/11$803

Wed 31/1206:00SEA - SYD

1 stop30h 25mMultiple Airlines

Deal found 12/11$804

Fri 5/1206:25SEA - MEL

1 stop27h 50mQantas Airways

Deal found 11/11$819

Sun 1/211:30SEA - SYD

2 stops23h 40mMultiple Airlines

Deal found 13/11$824

Fly from

Fly to

Route

Depart

Return

Price

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Tue 3/2

17:10-07:30

1 stop20h 20m

Brisbane

Sat 14/2

11:40-21:01

1 stop27h 21m

$1,323

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Fri 20/2

11:17-08:20

1 stop27h 03m

Brisbane

Sun 1/3

10:40-20:37

1 stop27h 57m

$1,323

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Fri 6/2

17:45-08:20

1 stop20h 35m

Brisbane

Sun 15/2

10:40-18:43

1 stop26h 03m

$1,323

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Sun 1/2

09:25-07:30

1 stop28h 05m

Brisbane

Tue 10/2

11:40-15:44

1 stop22h 04m

$1,323

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Fri 6/2

19:30-07:30

1 stop18h 00m

Brisbane

Sat 14/2

11:40-21:01

1 stop27h 21m

$1,323

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Thu 5/2

09:25-07:30

1 stop28h 05m

Brisbane

Thu 12/2

11:40-11:18

1 stop17h 38m

$1,323

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Tue 3/2

17:10-07:30

1 stop20h 20m

Brisbane

Fri 13/2

11:40-11:18

1 stop17h 38m

$1,323

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Fri 6/2

16:55-08:20

2 stops21h 25m

Brisbane

Wed 11/2

11:05-18:29

2 stops25h 24m

$1,329

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Thu 5/2

08:40-07:30

2 stops28h 50m

Brisbane

Tue 10/2

11:40-11:30

1 stop17h 50m

$1,329

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Sat 31/1

08:40-07:30

2 stops28h 50m

Brisbane

Mon 9/2

11:40-11:30

1 stop17h 50m

$1,329

Flights are sorted by cheapest return flights first.

Deals found on 13/11

Showing 1-10 of 60 results

...

Best time to book a flight from Seattle to Australia

Have a flexible travel schedule? Discover the best time to fly to Australia from Seattle with our price prediction graph.

Estimated return 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 Australia

What is the cheapest month to book a flight from Seattle to Australia?

Currently, July is the cheapest month in which you can book a flight from Seattle to Australia (average of $816). Flying from Seattle to Australia in December is currently the most expensive (average of $1,289). 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 AU?

Unlike in the morning, when flights are generally more expensive, you can save up to 12% on flights from Seattle to Australia by exploring options for tickets in the evening.

Reviews of airlines servicing Australia

Read reviews from past customers who have flown with United Airlines and Air Canada from Seattle to Australia. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

9,017 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

United Airlines

7.4

Good

9,017 reviews

United Airlines

7.4

Good

9,017 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Air Canada

7.1

Good

10,448 reviews

United Airlines

7.4

Good

9,017 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Related info for your journey

What airport do you fly from for flights from Seattle to Australia?
Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to Australia. Seattle/Tacoma Intl is conveniently located just 18.4 km from Seattle’s city centre.
How long is the flight from Seattle to Australia?
United Airlines, Delta, and Air Canada can get you from Seattle to Australia in just under 20h 20m. Your travel time can differ by up to 18h 15m. There are 11822 km between Seattle and Australia. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the cheapest airlines to fly from Seattle to Australia one-way?
To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at $679. Delta flights start at $679 while deals on Qantas Airways start at $819 one-way.
What are the most popular routes from Seattle to Australia?
Most travellers choose Seattle/Tacoma Intl - Sydney Kingsford Smith, Seattle/Tacoma Intl - Melbourne or Seattle/Tacoma Intl - Brisbane when deciding on the best route from Seattle to Australia.
Can I find deals for flights from Seattle to Australia that include hotel bookings?
Yes. In addition to deals on Seattle to Australia flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Seattle to Australia?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Australia.
Can I find deals for business class flights from Seattle to Australia?
Yes. Cheapflights offers flight deals from Seattle to Australia 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 Australia?
Currently, July is the cheapest month in which you can book a flight from Seattle to Australia (average of $816). Flying from Seattle to Australia in December is currently the most expensive (average of $1,289). 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

Top 2 airlines flying from Seattle to Australia

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$1,219	Average$2,075	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Air Canada	Cheapest$1,282	Average$1,777	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights

Fly with Cheapflights

How does Cheapflights help users find flights from Seattle to Australia?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Seattle to Australia. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Seattle to Australia?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Seattle to Australia.

Can Cheapflights find flights from Seattle to Australia with no change fees?

Certainly. Search results for flights to Australia from Seattle shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Seattle to Australia become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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Cheap flights from Seattle to Australia from $578

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 29/3. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Seattle to Australia

Keep the following information in mind while searching for Seattle to Australia flight deals. Data was last updated 14 November 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Seattle to Australia

Cheapest flights from Seattle to AustraliaExplore the most affordable flight options available from Seattle to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 November 2025.

Explore the most affordable flight options available from Seattle to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 November 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Seattle to Australia

Have a flexible travel schedule? Discover the best time to fly to Australia from Seattle with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Australia

What is the cheapest month to book a flight from Seattle to Australia?

What is the cheapest time of day to fly from SEA to AU?

Find hourly flight availability from Seattle to Australia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 14 November 2025.

Reviews of airlines servicing Australia

Read reviews from past customers who have flown with United Airlines and Air Canada from Seattle to Australia. Users can see the overall rating for each airline as well as how each is rated in terms of 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 Australia. 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 Australia?

How long is the flight from Seattle to Australia?

What are the cheapest airlines to fly from Seattle to Australia one-way?

What are the most popular routes from Seattle to Australia?

Can I find deals for flights from Seattle to Australia that include hotel bookings?

How can I find direct flights from Seattle to Australia?

Can I find deals for business class flights from Seattle to Australia?

What is the cheapest month to book a flight from Seattle to Australia?

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 Australia

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

Top 2 airlines flying from Seattle to Australia

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Seattle to Australia?

Why should you use Cheapflights to find cheap flight tickets from Seattle to Australia?

Can Cheapflights find flights from Seattle to Australia with no change fees?

Can Cheapflights notify me if prices for flights from Seattle to Australia become cheaper?

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Cheapest flights from Seattle to Australia
Explore the most affordable flight options available from Seattle to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 November 2025.