Which airlines fly to Australia?

United Airlines, Air Canada and Alaska Airlines are the top three most popular airlines that fly to Australia from State of Washington according to our data. United Airlines is the first choice among our users, with 52% of people opting to fly with this airline when travelling to Australia. Keep in mind that there are 3 different airlines that fly to Australia on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Washington to Australia?

Philippine Airlines, Air Canada, and American Airlines are the most popular carriers operating from Washington to Australia

How long is the flight from State of Washington to Australia?

The flight from State of Washington to Australia depends on which airports you’re departing from and arriving to, and whether or not you have a layover. If you fly from Seattle (a popular airport in State of Washington) to Sydney (the most popular airport in Australia), then the flight time is 17h 45m on average. If you fly from Spokane (another popular airport in State of Washington) to Sydney, then the average flight time is 19h 37m.

When did momondo last update prices for flights from Washington to Australia?

Prices for flights from Washington to Australia were last updated today.

How many operators does momondo search for flights from Washington to Australia?

As of December 2025, there are 3 operators available to choose from for flights from Washington to Australia.

How old do you have to be to fly from Washington to Australia?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington to Australia.

What documentation or ID do you need to fly to Australia?

The necessary travel and health documents for your Australia trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$585 Cheap Flights from Washington to Australia in 2025/26

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Find the cheapest flights from Washington to Australia

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

10:05 - 08:45

SEA

BNE

28h 40m1 stop

10:45 - 09:31

BNE

SEA

16h 46m1 stop

$1,193Air Canada

Tue, 10 Feb - Fri, 27 Feb

09:50 - 08:45

PDX

BNE

28h 55m1 stop

10:45 - 18:30

BNE

PDX

25h 45m1 stop

$1,195Air Canada

Mon, 26 Jan - Fri, 6 Feb

15:15 - 08:45

PDX

BNE

23h 30m1 stop

06:10 - 09:15

BNE

PDX

21h 05m2 stops

$1,219Multiple Airlines

Mon, 26 Jan - Fri, 6 Feb

20:00 - 08:45

SEA

BNE

18h 45m1 stop

06:10 - 09:15

BNE

SEA

21h 05m2 stops

$1,219Multiple Airlines

Sat, 14 Feb - Wed, 18 Feb

06:40 - 05:00

PDX

BNE

28h 20m1 stop

17:10 - 17:19

BNE

PDX

18h 09m1 stop

$1,270American Airlines

Sat, 21 Feb - Sun, 1 Mar

06:01 - 05:00

SEA

BNE

28h 59m1 stop

19:40 - 22:46

BNE

SEA

21h 06m1 stop

$1,270American Airlines

Thu, 19 Feb - Wed, 4 Mar

19:51 - 07:30

PDX

BNE

17h 39m1 stop

11:40 - 14:46

BNE

PDX

21h 06m1 stop

$1,305United Airlines

Thu, 5 Feb - Mon, 9 Feb

06:30 - 06:50

GEG

SYD

29h 20m1 stop

13:15 - 21:20

SYD

GEG

26h 05m1 stop

$1,320Delta

Tue, 3 Mar - Tue, 10 Mar

05:00 - 09:05

GEG

SYD

33h 05m2 stops

12:10 - 15:21

SYD

GEG

22h 11m2 stops

$1,326United Airlines

Sat, 24 Jan - Sat, 31 Jan

07:10 - 06:50

GEG

SYD

28h 40m2 stops

13:15 - 21:20

SYD

GEG

26h 05m1 stop

$1,327Delta

Tue, 3 Mar - Tue, 10 Mar

United Airlines flights from State of Washington to Australia

Our best United Airlines deals on State of Washington to Australia flight tickets

United Airlines

17 Mar

SEA05:00Seattle/Tacoma Intl

32h 30m

1 stop

BNE06:30Brisbane

26 Mar

BNE10:40Brisbane

18h 00m

1 stop

SEA11:40Seattle/Tacoma Intl

$1,296

Find similar

United Airlines

5 Feb

PDX19:51Portland

17h 39m

1 stop

BNE07:30Brisbane

9 Feb

BNE11:40Brisbane

21h 06m

1 stop

PDX14:46Portland

$1,305

Find similar

United Airlines

16 Dec

PDX05:00Portland

32h 30m

2 stops

BNE07:30Brisbane

28 Dec

BNE11:40Brisbane

25h 08m

1 stop

PDX18:48Portland

$1,311

Find similar

Air Canada flights from State of Washington to Australia

Our best Air Canada deals on State of Washington to Australia flight tickets

Air Canada

10 Feb

SEA10:05Seattle/Tacoma Intl

28h 40m

1 stop

BNE08:45Brisbane

27 Feb

BNE10:45Brisbane

16h 46m

1 stop

SEA09:31Seattle/Tacoma Intl

$1,193

Find similar

Air Canada

10 Feb

SEA15:40Seattle/Tacoma Intl

23h 05m

1 stop

BNE08:45Brisbane

27 Feb

BNE10:45Brisbane

16h 30m

1 stop

SEA09:15Seattle/Tacoma Intl

$1,195

Find similar

Air Canada

26 Jan

SEA09:55Seattle/Tacoma Intl

28h 50m

1 stop

BNE08:45Brisbane

2 Feb

BNE10:45Brisbane

21h 46m

1 stop

SEA14:31Seattle/Tacoma Intl

$1,196

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Tue 10/2

10:05-08:45

1 stop28h 40m

Brisbane

Fri 27/2

10:45-09:31

1 stop16h 46m

$1,193

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Mon 26/1

09:50-08:45

1 stop28h 55m

Brisbane

Fri 6/2

10:45-18:30

1 stop25h 45m

$1,195

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Mon 26/1

15:15-08:45

1 stop23h 30m

Brisbane

Fri 6/2

06:10-09:15

2 stops21h 05m

$1,219

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Sat 14/2

20:00-08:45

1 stop18h 45m

Brisbane

Wed 18/2

06:10-09:15

2 stops21h 05m

$1,219

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Sat 21/2

06:40-05:00

1 stop28h 20m

Brisbane

Sun 1/3

17:10-17:19

1 stop18h 09m

$1,270

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Thu 19/2

06:01-05:00

1 stop28h 59m

Brisbane

Wed 4/3

19:40-22:46

1 stop21h 06m

$1,270

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Thu 5/2

19:51-07:30

1 stop17h 39m

Brisbane

Mon 9/2

11:40-14:46

1 stop21h 06m

$1,305

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Tue 3/3

06:30-06:50

1 stop29h 20m

Sydney Kingsford Smith

Tue 10/3

13:15-21:20

1 stop26h 05m

$1,320

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Sat 24/1

05:00-09:05

2 stops33h 05m

Sydney Kingsford Smith

Sat 31/1

12:10-15:21

2 stops22h 11m

$1,326

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Tue 3/3

07:10-06:50

2 stops28h 40m

Sydney Kingsford Smith

Tue 10/3

13:15-21:20

1 stop26h 05m

$1,327

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from State of Washington to Australia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Australia?

In general, August is the cheapest month to fly from State of Washington to Australia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,270. If you don’t want to visit Australia in August, then you should wait until September to fly from State of Washington, when ticket prices are also cheap, with an average price of $1,318.

What is the cheapest day to depart on your flight to Australia?

On average, the least expensive day to fly to Australia from State of Washington is on a Monday. momondo users have found tickets for Monday departures for as low as $1,451. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from State of Washington to Australia on a Saturday will generally be more expensive and average around $1,754. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Australia?

According to our data, the cheapest time of day to fly to Australia is in the afternoon. momondo users have found flights departing from State of Washington to Australia in the afternoon for as low as $1,386. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Australia are more costly in the morning, with an average ticket price of $1,701. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight to Australia?

You are more likely to see cheaper flights to Australia from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Australia for around $1,594 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Australia from State of Washington for as low as $1,317 on momondo.

Can stopping save me money on State of Washington to Australia flights?

You could potentially save up to 1% on your flight if you consider stops on a State of Washington to Australia flight.

Cheap State of Washington to Australia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Australia

Fastest flight time	17h 39m
Direct flights	None

The fastest flight from State of Washington to Australia takes 17h 39m

There are no direct flights from State of Washington to Australia. There are no popular flight routes from State of Washington to Australia.

Search flight deals

When did momondo last update prices for flights from Washington to Australia?
Prices for flights from Washington to Australia were last updated today.
How many operators does momondo search for flights from Washington to Australia?
As of December 2025, there are 3 operators available to choose from for flights from Washington to Australia.
How old do you have to be to fly from Washington to Australia?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington to Australia.
What documentation or ID do you need to fly to Australia?
The necessary travel and health documents for your Australia trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from State of Washington to Australia

Compare and see reviews for airlines that fly from State of Washington to Australia with momondo

Airline	Rating	Free cancellation	Price
United Airlines	PriceFrom $1,199	Free cancellation	Rating 7.4 9,094 reviews	Search United Airlines flights
Air Canada	PriceFrom $1,262	Free cancellation	Rating 7.1 10,518 reviews	Search Air Canada flights
Alaska Airlines	PriceFrom $1,279	Free cancellation	Rating 8.0 11,432 reviews	Search Alaska Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Washington to Australia?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington to Australia for you.

Can I find flights from Washington to Australia with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Washington to Australia flights to just show those with flexible booking policies.

How can momondo help me find flights from Washington to Australia?

Once all potential Washington to Australia flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Washington to Australia right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Washington to Australia flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.