How long is the flight from Seattle to Australia?

Air Canada, United Airlines, and Singapore Airlines can get you from Seattle to Australia in just under 22h 25m. Your travel time can differ by up to 4h 10m. 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 Alaska Airlines, which is currently one of the cheapest options available, starting at $531. Qantas Airways flights start at $542 while deals on ANA start at $553 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 are the most popular airlines that fly from Seattle to Australia?

When booking a flight from Seattle to Australia, you may want to consider flying on United Airlines, Air Canada or Alaska Airlines as they are the most popular for this route.

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.

$571+ Flights from Seattle to Australia

Cheap 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 10 December 2025.

Tue 23/1205:50SEA - BNE

1 stop32h 55mAir Canada

Sat 27/1210:45BNE - SEA

1 stop16h 46mAir Canada

Deal found 8/12$1,193

Tue 23/1220:00SEA - BNE

1 stop18h 45mAir Canada

Fri 26/1210:45BNE - SEA

1 stop26h 31mAir Canada

Deal found 9/12$1,195

Tue 23/1215:40SEA - BNE

1 stop23h 05mAir Canada

Tue 19/510:00BNE - SEA

1 stop21h 16mAir Canada

Deal found 8/12$1,196

Tue 23/1205:00SEA - BNE

1 stop32h 30mUnited Airlines

Tue 19/510:30BNE - SEA

2 stops24h 39mUnited Airlines

Deal found 8/12$1,449

Wed 31/1206:00SEA - SYD

1 stop32h 00mQantas Airways

Tue 10/219:15SYD - SEA

2 stops41h 50mQantas Airways

Deal found 9/12$1,515

Fri 12/1209:05SEA - MEL

1 stop29h 25mUnited Airlines

Wed 14/111:30MEL - SEA

1 stop27h 25mUnited Airlines

Deal found 9/12$1,523

Sat 13/1208:40SEA - MEL

2 stops29h 50mUnited Airlines

Sat 27/1211:30MEL - SEA

1 stop23h 54mUnited Airlines

Deal found 8/12$1,529

Mon 15/1205:00SEA - MEL

2 stops33h 30mUnited Airlines

Fri 23/111:30MEL - SEA

1 stop19h 11mUnited Airlines

Deal found 9/12$1,530

Mon 15/1207:10SEA - MEL

1 stop29h 50mDelta

Wed 14/110:10MEL - SEA

1 stop28h 24mDelta

Deal found 9/12$1,533

Sun 14/1205:25SEA - MEL

2 stops55h 35mDelta

Fri 16/110:10MEL - SEA

2 stops27h 19mDelta

Deal found 9/12$1,561

Tue 9/1215:40SEA - SYD

1 stop22h 55mAir Canada

Tue 16/1211:20SYD - SEA

1 stop22h 11mAir Canada

Deal found 6/12$1,568

Mon 8/1220:00SEA - SYD

1 stop39h 55mAir Canada

Mon 22/1211:20SYD - SEA

1 stop17h 11mAir Canada

Deal found 8/12$1,570

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 10 December 2025.

Tue 31/315:40SEA - BNE

1 stop22h 25mAir Canada

Tue 7/410:00BNE - SEA

1 stop16h 33mAir Canada

Deal found 8/12$1,198

Fri 20/215:40SEA - BNE

1 stop23h 05mMultiple Airlines

Sun 1/318:30BNE - SEA

2 stops33h 01mMultiple Airlines

Deal found 7/12$1,292

Sat 14/212:32SEA - BNE

1 stop24h 58mUnited Airlines

Fri 20/211:40BNE - SEA

1 stop22h 01mUnited Airlines

Deal found 7/12$1,307

Fri 20/211:20SEA - BNE

2 stops27h 00mDelta

Sun 1/310:40BNE - SEA

2 stops22h 04mDelta

Deal found 7/12$1,314

Tue 7/410:15SEA - PER

1 stop22h 40mSingapore Airlines

Mon 27/417:10PER - SEA

1 stop30h 35mSingapore Airlines

Deal found 8/12$1,646

Fri 6/215:57SEA - SYD

2 stops22h 53mQantas Airways

Sun 1/313:00SYD - SEA

2 stops24h 57mQantas Airways

Deal found 6/12$1,708

Tue 7/419:55SEA - PER

2 stops44h 50mCathay Pacific

Mon 27/400:10PER - SEA

2 stops57h 30mCathay Pacific

Deal found 6/12$1,863

Mon 5/114:40SEA - SYD

1 stop34h 05mAlaska Airlines

Mon 12/121:40SYD - SEA

1 stop19h 37mAlaska Airlines

Deal found 7/12$1,887

Mon 20/411:44SEA - CNS

3 stops36h 11mAir New Zealand

Fri 1/511:50CNS - SEA

3 stops47h 46mAir New Zealand

Deal found 8/12$2,531

Wed 4/315:40SEA - BNE

1 stop23h 05mAir Canada

Wed 18/309:45BNE - SEA

1 stop26h 31mAir Canada

Deal found 8/12$1,277

Sat 31/109:25SEA - BNE

1 stop28h 05mUnited Airlines

Tue 10/211:40BNE - SEA

1 stop22h 04mUnited Airlines

Deal found 8/12$1,307

Sun 15/205:50SEA - BNE

1 stop32h 55mAir Canada

Sat 21/210:45BNE - SEA

1 stop26h 31mAir Canada

Deal found 7/12$1,289

Mon 26/119:30SEA - BNE

1 stop18h 00mUnited Airlines

Tue 10/211:40BNE - SEA

1 stop17h 50mUnited Airlines

Deal found 9/12$1,309

Thu 5/220:00SEA - ADL

2 stops23h 25mMultiple Airlines

Tue 24/206:10ADL - SEA

2 stops26h 51mMultiple Airlines

Deal found 7/12$1,490

Sun 15/210:05SEA - BNE

1 stop28h 40mAir Canada

Sun 22/210:45BNE - SEA

1 stop21h 46mAir Canada

Deal found 7/12$1,289

Tue 31/319:02SEA - BNE

2 stops42h 28mUnited Airlines

Tue 7/410:30BNE - SEA

2 stops24h 27mUnited Airlines

Deal found 9/12$1,315

Tue 7/410:15SEA - PER

1 stop22h 40mSingapore Airlines

Mon 27/401:10PER - SEA

1 stop22h 35mSingapore Airlines

Deal found 6/12$1,663

Tue 10/211:25SEA - SYD

2 stops24h 25mDelta

Tue 10/313:15SYD - SEA

2 stops21h 30mDelta

Deal found 8/12$1,683

Sun 1/205:50SEA - BNE

1 stop32h 55mAir Canada

Thu 12/210:45BNE - SEA

1 stop16h 46mAir Canada

Deal found 8/12$1,289

Wed 4/215:57SEA - SYD

1 stop22h 03mQantas Airways

Thu 12/219:40SYD - SEA

2 stops43h 18mQantas Airways

Deal found 8/12$1,726

Wed 21/111:00SEA - PER

2 stops34h 25mMultiple Airlines

Tue 27/104:55PER - SEA

2 stops44h 05mMultiple Airlines

Deal found 7/12$1,657

Wed 28/105:30SEA - SYD

2 stops32h 00mDelta

Wed 11/210:40SYD - SEA

2 stops20h 53mDelta

Deal found 7/12$1,683

Thu 21/510:15SEA - PER

1 stop27h 55mSingapore Airlines

Thu 11/606:25PER - SEA

1 stop41h 20mSingapore Airlines

Deal found 9/12$1,711

Mon 26/115:40SEA - BNE

1 stop23h 05mAir Canada

Thu 12/210:45BNE - SEA

1 stop16h 46mAir Canada

Deal found 9/12$1,291

Sat 31/106:00SEA - SYD

1 stop32h 00mQantas Airways

Thu 12/211:20SYD - SEA

1 stop27h 38mQantas Airways

Deal found 8/12$1,743

Sat 31/112:25SEA - MEL

2 stops26h 35mUnited Airlines

Fri 13/213:00MEL - SEA

1 stop27h 01mUnited Airlines

Deal found 8/12$1,506

Tue 13/107:00SEA - ADL

2 stops30h 45mAlaska Airlines

Sat 28/217:10ADL - SEA

2 stops30h 45mAlaska Airlines

Deal found 8/12$2,006

Thu 19/301:10SEA - PER

2 stops36h 30mMultiple Airlines

Mon 30/320:50PER - SEA

2 stops37h 40mMultiple Airlines

Deal found 8/12$1,675

Sun 1/211:25SEA - SYD

2 stops24h 25mDelta

Sun 15/210:40SYD - SEA

2 stops25h 08mDelta

Deal found 8/12$1,683

Sun 22/206:10SEA - CNS

2 stops33h 45mCathay Pacific

Thu 26/211:25CNS - SEA

2 stops44h 34mCathay Pacific

Deal found 6/12$2,130

Last-minute flights from Seattle to Australia
Discover last-minute flight deals from Seattle to Australia. Data last updated 10 December 2025 and is based on user searches.

Tue 23/1205:50SEA - BNE

1 stop32h 55mAir Canada

Sat 27/1210:45BNE - SEA

1 stop16h 46mAir Canada

Deal found 8/12$1,193

Tue 23/1220:00SEA - BNE

1 stop18h 45mAir Canada

Fri 26/1210:45BNE - SEA

1 stop26h 31mAir Canada

Deal found 9/12$1,195

Tue 23/1215:40SEA - BNE

1 stop23h 05mAir Canada

Tue 19/510:00BNE - SEA

1 stop21h 16mAir Canada

Deal found 8/12$1,196

Sat 10/115:40SEA - BNE

1 stop23h 05mAir Canada

Fri 23/110:45BNE - SEA

1 stop29h 21mAir Canada

Deal found 10/12$1,201

Sat 10/120:00SEA - BNE

1 stop18h 45mMultiple Airlines

Fri 23/106:10BNE - SEA

2 stops21h 05mMultiple Airlines

Deal found 10/12$1,226

Fri 23/115:40SEA - BNE

1 stop23h 05mAir Canada

Fri 30/110:45BNE - SEA

1 stop29h 21mAir Canada

Deal found 8/12$1,256

Fri 23/120:00SEA - BNE

1 stop18h 45mMultiple Airlines

Fri 30/106:10BNE - SEA

2 stops21h 21mMultiple Airlines

Deal found 8/12$1,282

Sun 25/120:00SEA - BNE

1 stop18h 45mAir Canada

Fri 13/210:45BNE - SEA

1 stop21h 46mAir Canada

Deal found 7/12$1,241

Sun 25/105:50SEA - BNE

1 stop32h 55mMultiple Airlines

Fri 13/206:10BNE - SEA

2 stops21h 21mMultiple Airlines

Deal found 7/12$1,267

Sun 25/120:00SEA - BNE

1 stop18h 45mAir Canada

Thu 12/210:45BNE - SEA

1 stop21h 46mAir Canada

Deal found 9/12$1,291

Fri 30/105:50SEA - BNE

1 stop32h 55mAir Canada

Fri 6/210:45BNE - SEA

1 stop26h 31mAir Canada

Deal found 8/12$1,289

Fri 30/117:10SEA - BNE

1 stop20h 20mUnited Airlines

Tue 10/211:40BNE - SEA

1 stop22h 04mUnited Airlines

Deal found 8/12$1,307

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 10 December 2025.

Sun 1/321:30SEA - SYD

1 stop41h 20mPhilippine Airlines

Deal found 7/12$571

Tue 14/423:10SEA - SYD

1 stop39h 50mPhilippine Airlines

Deal found 8/12$583

Tue 17/322:30SEA - SYD

1 stop41h 20mPhilippine Airlines

Deal found 7/12$592

Sun 1/210:05SEA - BNE

1 stop28h 40mAir Canada

Deal found 8/12$610

Sun 15/322:30SEA - SYD

1 stop41h 20mPhilippine Airlines

Deal found 7/12$613

Fri 27/320:00SEA - BNE

2 stops22h 05mMultiple Airlines

Deal found 8/12$636

Sun 15/320:00SEA - BNE

2 stops22h 30mMultiple Airlines

Deal found 7/12$637

Thu 29/109:55SEA - BNE

1 stop28h 50mAir Canada

Deal found 8/12$666

Fri 26/1213:45SEA - BNE

1 stop24h 35mDelta

Deal found 7/12$670

Fri 20/322:30SEA - SYD

1 stop41h 20mPhilippine Airlines

Deal found 7/12$672

Sat 3/105:02SEA - BNE

2 stops32h 28mUnited Airlines

Deal found 9/12$679

Tue 23/1205:00SEA - BNE

1 stop32h 30mUnited Airlines

Deal found 7/12$690

Find flight deals from Seattle to Australia

Round-trip from	$1,193
One-way from	$571
Popular in	December
Cheapest in	August
Average price	$2,228

Air Canada
23/12-27/12
2 total stops
49h 41m total
Seattle to Australia

Search Deals

Philippine Airlines
1/3
1 total stop
41h 20m total
Seattle to Australia

Search Deals

Highest demand for flights based on searches. 14% potential increase in price ($408 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($88 potential savings vs. average return price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Tue 31/3

15:40-07:05

1 stop22h 25m

Brisbane

Tue 7/4

10:00-09:33

1 stop16h 33m

$1,198

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Wed 4/3

15:40-08:45

1 stop23h 05m

Brisbane

Wed 18/3

09:45-19:16

1 stop26h 31m

$1,277

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Sun 15/2

05:50-08:45

1 stop32h 55m

Brisbane

Sat 21/2

10:45-19:16

1 stop26h 31m

$1,289

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Sun 15/2

10:05-08:45

1 stop28h 40m

Brisbane

Sun 22/2

10:45-14:31

1 stop21h 46m

$1,289

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Sun 1/2

05:50-08:45

1 stop32h 55m

Brisbane

Thu 12/2

10:45-09:31

1 stop16h 46m

$1,289

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Mon 26/1

15:40-08:45

1 stop23h 05m

Brisbane

Thu 12/2

10:45-09:31

1 stop16h 46m

$1,291

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Fri 20/2

15:40-08:45

1 stop23h 05m

Brisbane

Sun 1/3

18:30-09:31

2 stops33h 01m

$1,292

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Sat 14/2

12:32-07:30

1 stop24h 58m

Brisbane

Fri 20/2

11:40-15:41

1 stop22h 01m

$1,307

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Sat 31/1

09:25-07:30

1 stop28h 05m

Brisbane

Tue 10/2

11:40-15:44

1 stop22h 04m

$1,307

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Mon 26/1

19:30-07:30

1 stop18h 00m

Brisbane

Tue 10/2

11:40-11:30

1 stop17h 50m

$1,309

Flights are sorted by cheapest return flights first.

Deals found on 7/12

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 $755). Flying from Seattle to Australia in December is currently the most expensive (average of $1,273). 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 Alaska Airlines, United Airlines, andAir 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.

Alaska Airlines

8.0

Very Good

11,423 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Sept 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

11,423 reviews

Alaska Airlines

8.0

Very Good

11,423 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Sept 2025

SEA - MKE

United Airlines

7.4

Good

9,092 reviews

Alaska Airlines

8.0

Very Good

11,423 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Sept 2025

SEA - MKE

Air Canada

7.1

Good

10,515 reviews

Alaska Airlines

8.0

Very Good

11,423 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Sept 2025

SEA - MKE

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?
Air Canada, United Airlines, and Singapore Airlines can get you from Seattle to Australia in just under 22h 25m. Your travel time can differ by up to 4h 10m. 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 Alaska Airlines, which is currently one of the cheapest options available, starting at $531. Qantas Airways flights start at $542 while deals on ANA start at $553 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 $755). Flying from Seattle to Australia in December is currently the most expensive (average of $1,273). 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 3 airlines flying from Seattle to Australia

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$1,203	Average$2,048	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Air Canada	Cheapest$1,266	Average$1,762	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Alaska Airlines	Cheapest$1,283	Average$1,839	FlexibilityNo cancel fee	On-time75%	Search Alaska Airlines flights

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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 $571

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 18/3. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Seattle to Australia

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 10 December 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 10 December 2025.

Find flight deals from Seattle to Australia

Keep the following information in mind while searching for Seattle to Australia flight deals. Data was last updated 10 December 2025.

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 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 10 December 2025.

Reviews of airlines servicing Australia

Read reviews from past customers who have flown with Alaska Airlines, United Airlines, andAir 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 3 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 10 December 2025.