What airlines fly to Australia?

United Airlines, Air Canada and Qantas Airways 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 43% of people opting to fly with this airline when traveling to Australia. Keep in mind that there are 11 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, Delta, and Air Canada are the most popular carriers operating from Washington to Australia

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

Flight times from State of Washington to Australia vary, but if you’re flying out of Seattle and flying into Sydney (one of the most popular routes), then the duration is 17h 45m on average. Another popular route from State of Washington to Australia is flying from Spokane to Sydney, which will take roughly 21h 09m. Keep in mind that layovers or delays could extend your travel time.

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

Prices for flights from Washington to Australia are refreshed on a daily basis.

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

As of November 2025, there are 11 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 offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify 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 license 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.

$387 Cheap Flights from Washington to Australia in 2025/26

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Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:57 pm - 5:00 amPDX-BNE

20h 03m1 stop

7:40 pm - 9:35 amBNE-PDX

31h 55m1 stop

$682Multiple Airlines

Find Deal

Mon, Feb 9 - Mon, Mar 2

3:40 pm - 8:45 amSEA-BNE

23h 05m1 stop

10:45 am - 9:31 amBNE-SEA

16h 46m1 stop

$836Air Canada

Find Deal

Sun, Dec 7 - Sun, Dec 14

6:40 am - 5:00 amPDX-BNE

28h 20m1 stop

5:10 pm - 5:11 pmBNE-PDX

18h 01m1 stop

$844American Airlines

Find Deal

Sat, Feb 21 - Sun, Mar 1

8:30 am - 5:00 amPDX-BNE

26h 30m2 stops

5:10 pm - 12:16 amBNE-PDX

25h 06m2 stops

$849American Airlines

Find Deal

Sat, Feb 21 - Sun, Mar 1

1:00 pm - 7:20 amPDX-BNE

25h 20m1 stop

9:40 am - 11:53 amBNE-PDX

19h 13m1 stop

$866Delta

Find Deal

Mon, Mar 16 - Fri, Mar 20

11:17 am - 8:20 amSEA-BNE

27h 03m1 stop

10:40 am - 12:59 pmBNE-SEA

20h 19m1 stop

$866Delta

Find Deal

Fri, Feb 20 - Sun, Mar 1

2:40 pm - 9:30 amPDX-MEL

23h 50m1 stop

12:00 pm - 1:21 pmMEL-PDX

20h 21m1 stop

$932Qantas Airways

Find Deal

Tue, Feb 24 - Sat, Mar 7

3:50 pm - 6:45 amPDX-MEL

21h 55m1 stop

9:45 am - 10:31 pmMEL-PDX

29h 46m1 stop

$939Qantas Airways

Find Deal

Sat, Apr 4 - Sun, May 3

11:05 pm - 9:45 amSEA-SYD

41h 40m1 stop

11:35 am - 8:10 pmSYD-SEA

25h 35m1 stop

$947Philippine Airlines

Find Deal

Sun, Apr 19 - Thu, May 14

10:30 pm - 9:50 amSEA-SYD

41h 20m1 stop

11:35 am - 7:40 pmSYD-SEA

26h 05m1 stop

$998Philippine Airlines

Find Deal

Tue, Mar 10 - Thu, Mar 19

Philippine Airlines flights from State of Washington to Australia

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

Philippine Airlines

Apr 19

SEA11:05 pmSeattle/Tacoma Intl

41h 40m

1 stop

SYD9:45 amSydney Kingsford Smith

May 14

SYD11:35 amSydney Kingsford Smith

25h 35m

1 stop

SEA8:10 pmSeattle/Tacoma Intl

$947

Find similar

Philippine Airlines

Mar 10

SEA10:30 pmSeattle/Tacoma Intl

41h 20m

1 stop

SYD9:50 amSydney Kingsford Smith

Mar 19

SYD11:35 amSydney Kingsford Smith

26h 05m

1 stop

SEA7:40 pmSeattle/Tacoma Intl

$998

Find similar

Philippine Airlines

Nov 23

SEA9:30 pmSeattle/Tacoma Intl

40h 05m

1 stop

MEL8:35 amMelbourne

Dec 5

MEL10:20 amMelbourne

27h 20m

1 stop

SEA6:40 pmSeattle/Tacoma Intl

$1,361

Find similar

ANA flights from State of Washington to Australia

Our best ANA deals on State of Washington to Australia flight tickets

ANA

Mar 1

SEA3:45 pmSeattle/Tacoma Intl

23h 45m

1 stop

SYD10:30 amSydney Kingsford Smith

Mar 8

SYD9:45 pmSydney Kingsford Smith

34h 35m

1 stop

SEA2:20 pmSeattle/Tacoma Intl

$1,015

Find similar

ANA

Feb 24

SEA3:45 pmSeattle/Tacoma Intl

33h 30m

1 stop

SYD8:15 pmSydney Kingsford Smith

Mar 2

SYD9:45 pmSydney Kingsford Smith

34h 35m

1 stop

SEA1:20 pmSeattle/Tacoma Intl

$1,042

Find similar

ANA

Mar 16

SEA4:45 pmSeattle/Tacoma Intl

33h 30m

1 stop

SYD8:15 pmSydney Kingsford Smith

Apr 21

SYD8:55 pmSydney Kingsford Smith

34h 30m

1 stop

SEA2:25 pmSeattle/Tacoma Intl

$1,043

Find similar

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Mon 2/9

2:57 pm-5:00 am

1 stop20h 03m

Brisbane

Mon 3/2

7:40 pm-9:35 am

1 stop31h 55m

$682

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Sun 12/7

3:40 pm-8:45 am

1 stop23h 05m

Brisbane

Sun 12/14

10:45 am-9:31 am

1 stop16h 46m

$836

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Sat 2/21

6:40 am-5:00 am

1 stop28h 20m

Brisbane

Sun 3/1

5:10 pm-5:11 pm

1 stop18h 01m

$844

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Sat 2/21

8:30 am-5:00 am

2 stops26h 30m

Brisbane

Sun 3/1

5:10 pm-12:16 am

2 stops25h 06m

$849

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Mon 3/16

1:00 pm-7:20 am

1 stop25h 20m

Brisbane

Fri 3/20

9:40 am-11:53 am

1 stop19h 13m

$866

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Fri 2/20

11:17 am-8:20 am

1 stop27h 03m

Brisbane

Sun 3/1

10:40 am-12:59 pm

1 stop20h 19m

$866

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Tue 2/24

2:40 pm-9:30 am

1 stop23h 50m

Melbourne

Sat 3/7

12:00 pm-1:21 pm

1 stop20h 21m

$932

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Sat 4/4

3:50 pm-6:45 am

1 stop21h 55m

Melbourne

Sun 5/3

9:45 am-10:31 pm

1 stop29h 46m

$939

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 4/19

11:05 pm-9:45 am

1 stop41h 40m

Sydney Kingsford Smith

Thu 5/14

11:35 am-8:10 pm

1 stop25h 35m

$947

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Tue 3/10

10:30 pm-9:50 am

1 stop41h 20m

Sydney Kingsford Smith

Thu 3/19

11:35 am-7:40 pm

1 stop26h 05m

$998

Flights are sorted by cheapest round-trip 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?

The month of August is, on average, the cheapest month to fly to Australia from State of Washington, with most prices found around $848. If you aren’t able to travel during the month of August, then book flights to Australia from State of Washington during September instead. Flights to Australia in September, while not as cheap as those in August, still average around $895.

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

The cheapest day to depart from State of Washington to Australia is on a Tuesday. Travelers who choose to depart for Australia on a Tuesday will often find tickets for as low as $1,078. On the other hand, Thursday is the most expensive day to depart from State of Washington because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,156.

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

Flying to Australia from State of Washington in the evening is the least expensive time of day to depart. momondo users have found prices as low as $1,078 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $1,152 on average. Flights to Australia from State of Washington in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

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 $1,056 when searching weeks out. 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 $870 on momondo.

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

Direct flights	None

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 are refreshed on a daily basis.
How many operators does momondo search for flights from Washington to Australia?
As of November 2025, there are 11 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 offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify 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 license 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
ANA	PriceFrom $583	Free Cancellation	Rating 8.4 1,003 reviews	Search ANA flights
Alaska Airlines	PriceFrom $591	Free Cancellation	Rating 8.0 11,259 reviews	Search Alaska Airlines flights
Qantas Airways	PriceFrom $647	Free Cancellation	Rating 7.5 930 reviews	Search Qantas Airways flights
Air Canada	PriceFrom $779	Free Cancellation	Rating 7.1 10,429 reviews	Search Air Canada flights
American Airlines	PriceFrom $804	Free Cancellation	Rating 7.2 11,047 reviews	Search American Airlines flights
Hawaiian Airlines	PriceFrom $820	Free Cancellation	Rating 7.8 2,804 reviews	Search Hawaiian Airlines flights
United Airlines	PriceFrom $832	Free Cancellation	Rating 7.4 9,012 reviews	Search United Airlines flights
Delta	PriceFrom $842	Free Cancellation	Rating 7.9 8,004 reviews	Search Delta flights
Singapore Airlines	PriceFrom $1,239	Free Cancellation	Rating 8.1 1,395 reviews	Search Singapore Airlines flights
Qatar Airways	PriceFrom $1,307	Free Cancellation	Rating 7.4 3,661 reviews	Search Qatar Airways flights

Why use momondo?

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

Finding the right flight to Australia from Washington is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Australia quick and easy, saving you time and money.

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

All flight searches from Washington to Australia on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Australia from Washington.

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

If you are simply researching potential flights to Australia, momondo offers a useful price alert feature which will track prices for flights to Australia from Washington and alert you when they change.