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 41% of people opting to fly with this airline when traveling to Australia. Keep in mind that there are 12 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?

Qantas Airways, United Airlines, and Delta 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 20h 37m on average. Another popular route from State of Washington to Australia is flying from Pasco to Sydney, which will take roughly 22h 15m. 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 September 2026, there are 12 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.

$487 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.

7:05 pm - 8:35 amSEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

19h 30m1 stop Vancouver Intl

11:20 am - 2:37 pmSYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

22h 17m1 stop Vancouver Intl

$905Air Canada

Sun, Oct 25 - Sun, Nov 8

7:15 pm - 8:20 amSEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

19h 05m1 stop Vancouver Intl

11:20 am - 3:37 pmSYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

22h 17m1 stop Vancouver Intl

$912Air Canada

Mon, Oct 19 - Sun, Nov 1

7:05 pm - 8:35 amSEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

19h 30m1 stop Vancouver Intl

9:00 am - 9:32 amSYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

19h 32m2 stops Brisbane Vancouver Intl

$918Multiple Airlines

Sun, Oct 25 - Sun, Nov 8

10:50 am - 8:20 amSEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

27h 30m1 stop Vancouver Intl

6:20 am - 10:32 amSYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

22h 12m2 stops Brisbane Vancouver Intl

$923Multiple Airlines

Mon, Oct 19 - Sun, Nov 1

3:15 pm - 8:35 amSEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

23h 20m1 stop Vancouver Intl

11:20 am - 9:32 amSYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

17h 12m1 stop Vancouver Intl

$991Air New Zealand

Mon, Oct 26 - Mon, Nov 9

7:05 pm - 8:35 amSEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

19h 30m1 stop Vancouver Intl

11:20 am - 9:32 amSYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

17h 12m1 stop Vancouver Intl

$991Air New Zealand

Mon, Oct 26 - Wed, Nov 11

5:24 pm - 9:00 amGEG Spokane-SYD Sydney Kingsford Smith

20h 36m1 stop Los Angeles

2:05 pm - 8:40 pmSYD Sydney Kingsford Smith-GEG Spokane

25h 35m1 stop Dallas/Fort Worth

$1,016Qantas Airways

Wed, Nov 4 - Wed, Nov 11

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

23h 00m2 stops Phoenix Sky Harbor Intl Los Angeles

11:10 am - 4:54 pmSYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

24h 44m2 stops Los Angeles Dallas/Fort Worth

$1,048American Airlines

Wed, Nov 4 - Wed, Nov 11

2:51 pm - 9:00 amGEG Spokane-SYD Sydney Kingsford Smith

24h 09m1 stop Los Angeles

2:05 pm - 8:40 pmSYD Sydney Kingsford Smith-GEG Spokane

25h 35m1 stop Dallas/Fort Worth

$1,050Qantas Airways

Wed, Oct 28 - Wed, Nov 11

3:30 pm - 7:30 amSEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

22h 00m2 stops Phoenix Sky Harbor Intl Los Angeles

11:10 am - 3:09 pmSYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

21h 59m2 stops Los Angeles Sacramento Intl

$1,060American Airlines

Tue, Oct 20 - Tue, Oct 27

Cheap last minute flights

Enter your travel dates to find the best prices.

11:10 pm - 7:15 amSEA Seattle/Tacoma Intl-PER Perth

41h 05m1 stop Manila Ninoy Aquino Intl

8:35 am - 8:05 pmPER Perth-SEA Seattle/Tacoma Intl

26h 30m1 stop Manila Ninoy Aquino Intl

$1,204Philippine Airlines

Fri, Sep 25 - Thu, Oct 8

12:45 pm - 1:15 pmGEG Spokane-BNE Brisbane

31h 30m2 stops Dallas/Fort Worth Sydney Kingsford Smith

3:30 pm - 8:25 pmBNE Brisbane-GEG Spokane

45h 55m2 stops Sydney Kingsford Smith Dallas/Fort Worth

$1,218Qantas Airways

Sat, Sep 26 - Sat, Oct 3

11:45 am - 10:40 pmSEA Seattle/Tacoma Intl-PER Perth

43h 55m1 stop Hong Kong Intl

12:25 am - 9:45 amPER Perth-SEA Seattle/Tacoma Intl

24h 20m1 stop Hong Kong Intl

$1,280Cathay Pacific

Tue, Sep 29 - Wed, Oct 28

11:45 am - 10:40 pmSEA Seattle/Tacoma Intl-PER Perth

43h 55m1 stop Hong Kong Intl

12:25 am - 9:45 amPER Perth-SEA Seattle/Tacoma Intl

24h 20m1 stop Hong Kong Intl

$1,280Cathay Pacific

Tue, Sep 29 - Mon, Oct 26

11:10 pm - 8:55 amSEA Seattle/Tacoma Intl-PER Perth

42h 45m2 stops Manila Ninoy Aquino Intl Ho Chi Minh City

10:35 am - 8:05 amPER Perth-SEA Seattle/Tacoma Intl

36h 30m1 stop Singapore Changi

$1,285Multiple Airlines

Tue, Sep 29 - Wed, Oct 28

12:35 pm - 7:50 amSEA Seattle/Tacoma Intl-MEL Melbourne

26h 15m1 stop Los Angeles

11:00 am - 9:58 pmMEL Melbourne-SEA Seattle/Tacoma Intl

28h 58m1 stop Los Angeles

$1,431Delta

Fri, Sep 25 - Fri, Oct 23

11:22 am - 7:50 amSEA Seattle/Tacoma Intl-MEL Melbourne

27h 28m2 stops Salt Lake City Los Angeles

11:00 am - 4:45 pmMEL Melbourne-SEA Seattle/Tacoma Intl

23h 45m1 stop Los Angeles

$1,436Delta

Fri, Sep 25 - Fri, Oct 23

4:25 pm - 5:30 pmSEA Seattle/Tacoma Intl-BNE Brisbane

32h 05m1 stop Doha Hamad Intl

10:10 pm - 12:25 pmBNE Brisbane-SEA Seattle/Tacoma Intl

31h 15m1 stop Doha Hamad Intl

$1,560Qatar Airways

Mon, Sep 28 - Wed, Oct 21

4:25 pm - 6:35 pmSEA Seattle/Tacoma Intl-PER Perth

35h 10m1 stop Doha Hamad Intl

10:45 pm - 12:40 pmPER Perth-SEA Seattle/Tacoma Intl

28h 55m1 stop Doha Hamad Intl

$1,689Qatar Airways

Mon, Sep 28 - Fri, Oct 30

12:55 pm - 9:50 pmSEA Seattle/Tacoma Intl-HBA Hobart

39h 55m2 stops Los Angeles Sydney Kingsford Smith

6:00 am - 12:16 pmHBA Hobart-SEA Seattle/Tacoma Intl

24h 16m2 stops Melbourne Los Angeles

$2,262Qantas Airways

Sun, Sep 27 - Mon, Oct 5

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Air New Zealand flights from State of Washington to Australia

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

Air New Zealand

Nov 1

SEA7:05 pmSeattle/Tacoma Intl

19h 30m

1 stop

SYD9:35 amSydney Kingsford Smith

Nov 16

SYD11:20 amSydney Kingsford Smith

22h 17m

1 stop

SEA2:37 pmSeattle/Tacoma Intl

$997

Air New Zealand

Feb 13

GEG5:47 pmSpokane

43h 48m

2 stops

SYD8:35 amSydney Kingsford Smith

Feb 20

SYD7:25 pmSydney Kingsford Smith

39h 43m

2 stops

GEG4:08 pmSpokane

$1,167

Air New Zealand

Feb 15

SEA8:40 amSeattle/Tacoma Intl

31h 15m

2 stops

MEL10:55 amMelbourne

Mar 3

MEL8:15 amMelbourne

31h 33m

2 stops

SEA8:48 pmSeattle/Tacoma Intl

$1,197

Qantas Airways flights from State of Washington to Australia

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

Qantas Airways

Nov 4

GEG5:24 pmSpokane

20h 36m

1 stop

SYD9:00 amSydney Kingsford Smith

Nov 11

SYD2:05 pmSydney Kingsford Smith

25h 35m

1 stop

GEG8:40 pmSpokane

$1,016

Qantas Airways

Oct 28

GEG2:51 pmSpokane

24h 09m

1 stop

SYD9:00 amSydney Kingsford Smith

Nov 10

SYD2:05 pmSydney Kingsford Smith

25h 35m

1 stop

GEG8:40 pmSpokane

$1,050

Qantas Airways

Nov 13

GEG1:08 pmSpokane

22h 17m

1 stop

SYD6:25 amSydney Kingsford Smith

Nov 20

SYD10:25 amSydney Kingsford Smith

22h 49m

2 stops

GEG2:14 pmSpokane

$1,148

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 10/25

7:05 pm-8:35 am

1 stop19h 30m

Sydney Kingsford Smith

Sun 11/8

11:20 am-2:37 pm

1 stop22h 17m

$905

SeattleSydney

SEA Seattle/Tacoma Intl - SYD Sydney Kingsford Smith

SEASYD

Seattle/Tacoma Intl

Mon 10/19

7:15 pm-8:20 am

1 stop19h 05m

Sydney Kingsford Smith

Sun 11/1

11:20 am-3:37 pm

1 stop22h 17m

$912

SeattleSydney

SEA Seattle/Tacoma Intl - SYD Sydney Kingsford Smith

SEASYD

Seattle/Tacoma Intl

Sun 10/25

7:05 pm-8:35 am

1 stop19h 30m

Sydney Kingsford Smith

Sun 11/8

9:00 am-9:32 am

2 stops19h 32m

$918

SeattleSydney

SEA Seattle/Tacoma Intl - SYD Sydney Kingsford Smith

SEASYD

Seattle/Tacoma Intl

Mon 10/19

10:50 am-8:20 am

1 stop27h 30m

Sydney Kingsford Smith

Sun 11/1

6:20 am-10:32 am

2 stops22h 12m

$923

SeattleSydney

SEA Seattle/Tacoma Intl - SYD Sydney Kingsford Smith

SEASYD

Seattle/Tacoma Intl

Mon 10/26

3:15 pm-8:35 am

1 stop23h 20m

Sydney Kingsford Smith

Mon 11/9

11:20 am-9:32 am

1 stop17h 12m

$991

Quickest round-trip

SeattleSydney

SEA Seattle/Tacoma Intl - SYD Sydney Kingsford Smith

SEASYD

Seattle/Tacoma Intl

Mon 10/26

7:05 pm-8:35 am

1 stop19h 30m

Sydney Kingsford Smith

Wed 11/11

11:20 am-9:32 am

1 stop17h 12m

$991

SpokaneSydney

GEG Spokane - SYD Sydney Kingsford Smith

GEGSYD

Spokane

Wed 11/4

5:24 pm-9:00 am

1 stop20h 36m

Sydney Kingsford Smith

Wed 11/11

2:05 pm-8:40 pm

1 stop25h 35m

$1,016

SeattleSydney

SEA Seattle/Tacoma Intl - SYD Sydney Kingsford Smith

SEASYD

Seattle/Tacoma Intl

Wed 11/4

3:00 pm-9:00 am

2 stops23h 00m

Sydney Kingsford Smith

Wed 11/11

11:10 am-4:54 pm

2 stops24h 44m

$1,048

SpokaneSydney

GEG Spokane - SYD Sydney Kingsford Smith

GEGSYD

Spokane

Wed 10/28

2:51 pm-9:00 am

1 stop24h 09m

Sydney Kingsford Smith

Wed 11/11

2:05 pm-8:40 pm

1 stop25h 35m

$1,050

SeattleSydney

SEA Seattle/Tacoma Intl - SYD Sydney Kingsford Smith

SEASYD

Seattle/Tacoma Intl

Tue 10/20

3:30 pm-7:30 am

2 stops22h 00m

Sydney Kingsford Smith

Tue 10/27

11:10 am-3:09 pm

2 stops21h 59m

$1,060

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 $1,034. If you aren’t able to travel during the month of February, then book flights to Australia from State of Washington during August instead. Flights to Australia in August, while not as cheap as those in February, still average around $1,045.

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 $1,158 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 $1,010 on momondo.

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

You could potentially save up to 8% 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	$487
Fastest flight time	18h 20m
Direct flights	None

The best one-way flight to Australia from State of Washington in the past 72 hours is $487. The best round-trip flight deal from State of Washington to Australia found on momondo in the last 72 hours is $905.

The fastest flight from State of Washington to Australia takes 18h 20m

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 September 2026, there are 12 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
Alaska Airlines	PriceFrom $97	Free Cancellation	Rating 7.9 12,962 reviews	Search Alaska Airlines flights
Delta	PriceFrom $570	Free Cancellation	Rating 7.8 8,594 reviews	Search Delta flights
ANA	PriceFrom $583	Free Cancellation	Rating 8.3 1,321 reviews	Search ANA flights
United Airlines	PriceFrom $598	Free Cancellation	Rating 7.4 10,232 reviews	Search United Airlines flights
Air Canada	PriceFrom $796	Free Cancellation	Rating 7.1 11,676 reviews	Search Air Canada flights
Qantas Airways	PriceFrom $805	Free Cancellation	Rating 7.5 1,101 reviews	Search Qantas Airways flights
Hawaiian Airlines	PriceFrom $822	Free Cancellation	Rating 7.8 2,809 reviews	Search Hawaiian Airlines flights
Air New Zealand	PriceFrom $947	Free Cancellation	Rating 8.0 669 reviews	Search Air New Zealand flights
American Airlines	PriceFrom $975	Free Cancellation	Rating 7.0 12,077 reviews	Search American Airlines flights
Cathay Pacific	PriceFrom $1,153	Free Cancellation	Rating 7.6 1,494 reviews	Search Cathay Pacific 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.