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 Pasco to Sydney, which will take roughly 20h 39m. Keep in mind that layovers or delays could extend your travel time.

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

Alaska Airlines, Philippine Airlines, and United Airlines are the most popular carriers operating from Washington to Australia

What airlines fly to Australia?

Air Canada, United Airlines and Delta are the top three most popular airlines that fly to Australia from State of Washington according to our data. Air Canada is the first choice among our users, with 37% of people opting to fly with this airline when traveling to Australia. Keep in mind that there are 10 different airlines that fly to Australia on a routine basis, so you have a few additional options to choose from.

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 2026, there are 10 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.

$461 Cheap Flights from Washington to Australia in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Washington to Australia

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

11:55 pm - 9:45 amSEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

40h 50m1 stop Manila Ninoy Aquino Intl

11:35 am - 7:35 pmSYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

25h 00m1 stop Manila Ninoy Aquino Intl

$896Philippine Airlines

Sun, Apr 18 - Sun, Apr 25

11:55 pm - 9:45 amSEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

40h 50m1 stop Manila Ninoy Aquino Intl

11:35 am - 7:35 pmSYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

25h 00m1 stop Manila Ninoy Aquino Intl

$898Philippine Airlines

Sun, Apr 18 - Sun, Apr 25

7:10 pm - 6:25 amSEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

41h 15m1 stop Los Angeles

10:20 am - 11:56 pmSYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

31h 36m1 stop Los Angeles

$1,103Alaska Airlines

Tue, Mar 16 - Tue, Mar 30

3:40 pm - 6:45 amSEA Seattle/Tacoma Intl-MEL Melbourne

22h 05m1 stop Los Angeles

9:30 pm - 11:56 pmMEL Melbourne-SEA Seattle/Tacoma Intl

19h 26m1 stop Los Angeles

$1,106Alaska Airlines

Fri, May 7 - Fri, May 14

7:00 am - 8:30 amGEG Spokane-BNE Brisbane

31h 30m2 stops Seattle/Tacoma Intl Los Angeles

9:35 am - 1:02 pmBNE Brisbane-GEG Spokane

20h 27m2 stops Los Angeles Seattle/Tacoma Intl

$1,157Delta

Mon, Mar 1 - Wed, Mar 17

8:40 am - 12:05 amSEA Seattle/Tacoma Intl-PER Perth

23h 25m1 stop Singapore Changi

1:50 pm - 8:05 amPER Perth-SEA Seattle/Tacoma Intl

33h 15m1 stop Singapore Changi

$1,170Singapore Airlines

Tue, Mar 9 - Tue, Mar 23

3:40 pm - 8:30 amGEG Spokane-BNE Brisbane

46h 50m2 stops Seattle/Tacoma Intl Los Angeles

9:35 am - 1:02 pmBNE Brisbane-GEG Spokane

20h 27m2 stops Los Angeles Seattle/Tacoma Intl

$1,171Delta

Sun, Feb 28 - Fri, Mar 19

1:18 pm - 8:35 amSEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

24h 17m2 stops San Francisco Auckland Intl

9:55 am - 4:39 pmSYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

25h 44m2 stops Auckland Intl San Francisco

$1,172Air New Zealand

Tue, Jan 26 - Tue, Feb 9

7:00 am - 10:35 amSEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

32h 35m2 stops San Francisco Auckland Intl

9:55 am - 9:55 pmSYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

31h 00m2 stops Auckland Intl Vancouver Intl

$1,178Air New Zealand

Tue, Feb 23 - Sun, Mar 7

10:15 am - 11:55 pmSEA Seattle/Tacoma Intl-PER Perth

22h 40m1 stop Singapore Changi

1:45 pm - 8:45 amPER Perth-SEA Seattle/Tacoma Intl

34h 00m1 stop Singapore Changi

$1,219Singapore Airlines

Sun, Apr 11 - Fri, Apr 23

Cheap last minute flights

Enter your travel dates to find the best prices.

6:00 am - 6:30 amGEG Spokane-BNE Brisbane

30h 30m1 stop Dallas/Fort Worth

9:40 am - 10:32 pmBNE Brisbane-GEG Spokane

30h 52m1 stop Dallas/Fort Worth

$1,213American Airlines

Tue, Nov 17 - Fri, Dec 25

4:10 pm - 7:30 amGEG Spokane-BNE Brisbane

45h 20m2 stops Denver Intl San Francisco

11:20 am - 8:51 pmBNE Brisbane-GEG Spokane

27h 31m2 stops San Francisco Denver Intl

$1,226United Airlines

Tue, Nov 17 - Fri, Dec 25

4:10 pm - 7:30 amGEG Spokane-BNE Brisbane

45h 20m2 stops Denver Intl San Francisco

11:20 am - 9:15 pmBNE Brisbane-GEG Spokane

27h 55m1 stop San Francisco

$1,233United Airlines

Tue, Nov 17 - Fri, Dec 25

7:00 am - 7:45 pmSEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

17h 45m1 stop Honolulu

9:40 pm - 8:20 pmSYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

17h 40m1 stop Honolulu

$1,235Multiple Airlines

Thu, Nov 12 - Tue, Nov 24

7:00 am - 7:45 pmSEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

17h 45m1 stop Honolulu

9:40 pm - 8:20 pmSYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

17h 40m1 stop Honolulu

$1,245Multiple Airlines

Thu, Nov 12 - Thu, Nov 26

7:55 pm - 8:30 amSEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

41h 35m2 stops Salt Lake City Los Angeles

10:40 am - 8:19 pmSYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

28h 39m1 stop Los Angeles

$1,252Delta

Sat, Nov 14 - Wed, Dec 16

9:25 am - 8:30 amSEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

28h 05m2 stops Salt Lake City Los Angeles

10:40 am - 10:02 amSYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

18h 22m1 stop Los Angeles

$1,252Delta

Tue, Nov 17 - Wed, Dec 16

3:00 pm - 9:00 amSEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

23h 00m2 stops Phoenix Sky Harbor Intl Los Angeles

11:15 am - 1:02 pmSYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

20h 47m1 stop Los Angeles

$1,298American Airlines

Tue, Nov 17 - Sun, Dec 6

9:00 pm - 5:50 amSEA Seattle/Tacoma Intl-BNE Brisbane

38h 50m1 stop Los Angeles

1:10 pm - 10:43 pmBNE Brisbane-SEA Seattle/Tacoma Intl

27h 33m1 stop Los Angeles

$1,394Alaska Airlines

Fri, Nov 13 - Mon, Nov 16

7:00 am - 8:45 amGEG Spokane-BNE Brisbane

31h 45m2 stops San Francisco Vancouver Intl

6:05 am - 9:15 pmBNE Brisbane-GEG Spokane

33h 10m3 stops Sydney Kingsford Smith Vancouver Intl San Francisco

$1,431Air New Zealand

Tue, Nov 17 - Fri, Dec 25

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Qantas Airways flights from State of Washington to Australia

Our best Qantas Airways deals on State of Washington to Australia flight tickets

Qantas Airways

Feb 8

GEG6:18 pmSpokane

19h 42m

1 stop

SYD9:00 amSydney Kingsford Smith

Feb 16

SYD2:05 pmSydney Kingsford Smith

25h 50m

1 stop

GEG8:55 pmSpokane

$1,264

Qantas Airways

Nov 20

SEA1:38 pmSeattle/Tacoma Intl

22h 12m

1 stop

BNE5:50 amBrisbane

Nov 30

BNE1:10 pmBrisbane

39h 51m

1 stop

SEA11:01 amSeattle/Tacoma Intl

$1,265

Qantas Airways

Feb 6

GEG6:18 pmSpokane

41h 07m

1 stop

SYD6:25 amSydney Kingsford Smith

Feb 16

SYD2:05 pmSydney Kingsford Smith

25h 50m

1 stop

GEG8:55 pmSpokane

$1,308

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 18

SEA11:55 pmSeattle/Tacoma Intl

40h 50m

1 stop

SYD9:45 amSydney Kingsford Smith

Apr 25

SYD11:35 amSydney Kingsford Smith

25h 00m

1 stop

SEA7:35 pmSeattle/Tacoma Intl

$896

Philippine Airlines

Apr 18

SEA11:55 pmSeattle/Tacoma Intl

40h 50m

1 stop

SYD9:45 amSydney Kingsford Smith

Apr 25

SYD11:35 amSydney Kingsford Smith

25h 00m

1 stop

SEA7:35 pmSeattle/Tacoma Intl

$898

Philippine Airlines

Apr 18

SEA11:55 pmSeattle/Tacoma Intl

40h 50m

1 stop

SYD9:45 amSydney Kingsford Smith

Apr 25

SYD11:35 amSydney Kingsford Smith

25h 00m

1 stop

SEA7:35 pmSeattle/Tacoma Intl

$912

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

Cheapest round-trip

SeattleSydney

SEA Seattle/Tacoma Intl - SYD Sydney Kingsford Smith

SEASYD

Seattle/Tacoma Intl

Sun 4/18

11:55 pm-9:45 am

1 stop40h 50m

Sydney Kingsford Smith

Sun 4/25

11:35 am-7:35 pm

1 stop25h 00m

$896

SeattleSydney

SEA Seattle/Tacoma Intl - SYD Sydney Kingsford Smith

SEASYD

Seattle/Tacoma Intl

Sun 4/18

11:55 pm-9:45 am

1 stop40h 50m

Sydney Kingsford Smith

Sun 4/25

11:35 am-7:35 pm

1 stop25h 00m

$898

SeattleSydney

SEA Seattle/Tacoma Intl - SYD Sydney Kingsford Smith

SEASYD

Seattle/Tacoma Intl

Tue 3/16

7:10 pm-6:25 am

1 stop41h 15m

Sydney Kingsford Smith

Tue 3/30

10:20 am-11:56 pm

1 stop31h 36m

$1,103

Quickest round-trip

SeattleMelbourne

SEA Seattle/Tacoma Intl - MEL Melbourne

SEAMEL

Seattle/Tacoma Intl

Fri 5/7

3:40 pm-6:45 am

1 stop22h 05m

Melbourne

Fri 5/14

9:30 pm-11:56 pm

1 stop19h 26m

$1,106

SpokaneBrisbane

GEG Spokane - BNE Brisbane

GEGBNE

Spokane

Mon 3/1

7:00 am-8:30 am

2 stops31h 30m

Brisbane

Wed 3/17

9:35 am-1:02 pm

2 stops20h 27m

$1,157

SeattlePerth

SEA Seattle/Tacoma Intl - PER Perth

SEAPER

Seattle/Tacoma Intl

Tue 3/9

8:40 am-12:05 am

1 stop23h 25m

Perth

Tue 3/23

1:50 pm-8:05 am

1 stop33h 15m

$1,170

SpokaneBrisbane

GEG Spokane - BNE Brisbane

GEGBNE

Spokane

Sun 2/28

3:40 pm-8:30 am

2 stops46h 50m

Brisbane

Fri 3/19

9:35 am-1:02 pm

2 stops20h 27m

$1,171

SeattleSydney

SEA Seattle/Tacoma Intl - SYD Sydney Kingsford Smith

SEASYD

Seattle/Tacoma Intl

Tue 1/26

1:18 pm-8:35 am

2 stops24h 17m

Sydney Kingsford Smith

Tue 2/9

9:55 am-4:39 pm

2 stops25h 44m

$1,172

SeattleSydney

SEA Seattle/Tacoma Intl - SYD Sydney Kingsford Smith

SEASYD

Seattle/Tacoma Intl

Tue 2/23

7:00 am-10:35 am

2 stops32h 35m

Sydney Kingsford Smith

Sun 3/7

9:55 am-9:55 pm

2 stops31h 00m

$1,178

SeattlePerth

SEA Seattle/Tacoma Intl - PER Perth

SEAPER

Seattle/Tacoma Intl

Sun 4/11

10:15 am-11:55 pm

1 stop22h 40m

Perth

Fri 4/23

1:45 pm-8:45 am

1 stop34h 00m

$1,219

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 February is, on average, the cheapest month to fly to Australia from State of Washington, with most prices found around $1,059. If you aren’t able to travel during the month of February, then book flights to Australia from State of Washington during April instead. Flights to Australia in April, while not as cheap as those in February, still average around $1,110.

How far in advance should I book a flight from Washington 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 $1,207 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 $1,000 on momondo.

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

You could potentially save up to 3% 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

Best Price Found	$461
Fastest flight time	17h 45m
Direct flights	None

The best one-way flight to Australia from State of Washington in the past 72 hours is $461. The best round-trip flight deal from State of Washington to Australia found on momondo in the last 72 hours is $896.

The fastest flight from State of Washington to Australia takes 17h 45m

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

Frequently asked questions about flying from Washington to Australia

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 2026, there are 10 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
United Airlines	PriceFrom $598	Free Cancellation	Rating 7.3 10,481 reviews	Search United Airlines flights
Delta	PriceFrom $777	Free Cancellation	Rating 7.8 8,709 reviews	Search Delta flights
Air Canada	PriceFrom $795	Free Cancellation	Rating 7.1 11,891 reviews	Search Air Canada flights
Qantas Airways	PriceFrom $819	Free Cancellation	Rating 7.5 1,125 reviews	Search Qantas Airways flights
Air New Zealand	PriceFrom $949	Free Cancellation	Rating 8.0 684 reviews	Search Air New Zealand flights
American Airlines	PriceFrom $975	Free Cancellation	Rating 7.0 12,227 reviews	Search American Airlines flights
ANA	PriceFrom $1,008	Free Cancellation	Rating 8.3 1,341 reviews	Search ANA flights
Alaska Airlines	PriceFrom $1,159	Free Cancellation	Rating 7.9 13,158 reviews	Search Alaska Airlines flights
Singapore Airlines	PriceFrom $1,232	Free Cancellation	Rating 8.2 1,633 reviews	Search Singapore Airlines flights
Qatar Airways	PriceFrom $1,240	Free Cancellation	Rating 7.4 3,700 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.