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 40% 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.

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 50m on average. Another popular route from State of Washington to Australia is flying from Spokane to Sydney, which will take roughly 18h 38m. Keep in mind that layovers or delays could extend your travel time.

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

United Airlines, Qantas Airways, and Alaska Airlines are the most popular carriers operating 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 June 2026, 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.

$444 Cheap Flights from Washington to Australia in 2026

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.

11:10 pm - 6:30 am

SEA

MEL

38h 20m

1 stop

7:30 am - 8:05 pm

MEL

SEA

30h 35m

1 stop

$995Philippine Airlines

Tue, Sep 15 - Tue, Oct 6

10:34 am - 11:50 am

SEA

SYD

32h 16m

2 stops

1:15 pm - 10:39 am

SYD

SEA

38h 24m

3 stops

$1,003Multiple Airlines

Mon, Aug 17 - Fri, Aug 28

5:45 am - 7:20 am

SEA

SYD

32h 35m

1 stop

9:20 am - 10:42 pm

SYD

SEA

30h 22m

1 stop

$1,004Air Canada

Sun, Jul 5 - Sun, Jul 19

10:55 am - 8:15 am

SEA

MEL

28h 20m

1 stop

11:55 am - 12:23 pm

MEL

SEA

18h 28m

1 stop

$1,010United Airlines

Mon, Sep 28 - Sun, Oct 18

5:00 am - 7:30 am

SEA

MEL

33h 30m

2 stops

11:55 am - 12:23 pm

MEL

SEA

18h 28m

1 stop

$1,015United Airlines

Mon, Sep 28 - Sun, Oct 18

5:45 am - 7:20 am

SEA

SYD

32h 35m

1 stop

9:20 am - 10:42 pm

SYD

SEA

30h 22m

1 stop

$1,017Air Canada

Sun, Jul 5 - Sun, Jul 19

11:40 am - 6:45 am

SEA

MEL

26h 05m

1 stop

1:35 pm - 10:26 pm

MEL

SEA

25h 51m

1 stop

$1,063American Airlines

Thu, Aug 6 - Wed, Aug 19

2:45 pm - 9:30 am

PDX

MEL

24h 45m

1 stop

12:00 pm - 10:59 pm

MEL

PDX

29h 59m

1 stop

$1,080American Airlines

Mon, Oct 26 - Thu, Nov 19

8:00 am - 6:50 pm

PDX

SYD

17h 50m

1 stop

8:45 pm - 8:46 pm

SYD

PDX

17h 01m

1 stop

$1,081Alaska Airlines

Mon, Aug 24 - Sun, Aug 30

8:00 am - 6:50 pm

PDX

SYD

17h 50m

1 stop

8:45 pm - 8:46 pm

SYD

PDX

17h 01m

1 stop

$1,095Alaska Airlines

Mon, Aug 31 - Sun, Sep 13

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Alaska Airlines flights from State of Washington to Australia

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

Alaska Airlines

Aug 24

PDX8:00 amPortland

17h 50m

1 stop

SYD6:50 pmSydney Kingsford Smith

Aug 30

SYD8:45 pmSydney Kingsford Smith

17h 01m

1 stop

PDX8:46 pmPortland

$1,081

Alaska Airlines

Aug 31

PDX8:00 amPortland

17h 50m

1 stop

SYD6:50 pmSydney Kingsford Smith

Sep 13

SYD8:45 pmSydney Kingsford Smith

17h 01m

1 stop

PDX8:46 pmPortland

$1,095

Alaska Airlines

Aug 31

PDX8:00 amPortland

17h 50m

1 stop

SYD6:50 pmSydney Kingsford Smith

Sep 13

SYD8:45 pmSydney Kingsford Smith

26h 29m

1 stop

PDX6:14 amPortland

$1,096

United Airlines flights from State of Washington to Australia

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

United Airlines

Sep 28

SEA10:55 amSeattle/Tacoma Intl

28h 20m

1 stop

MEL8:15 amMelbourne

Oct 18

MEL11:55 amMelbourne

18h 28m

1 stop

SEA12:23 pmSeattle/Tacoma Intl

$1,010

United Airlines

Sep 28

SEA5:00 amSeattle/Tacoma Intl

33h 30m

2 stops

MEL7:30 amMelbourne

Oct 18

MEL11:55 amMelbourne

18h 28m

1 stop

SEA12:23 pmSeattle/Tacoma Intl

$1,015

United Airlines

Sep 22

SEA3:30 pmSeattle/Tacoma Intl

22h 25m

1 stop

SYD6:55 amSydney Kingsford Smith

Oct 7

SYD10:30 amSydney Kingsford Smith

23h 20m

1 stop

SEA3:50 pmSeattle/Tacoma Intl

$1,018

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Tue 9/15

11:10 pm-6:30 am

1 stop38h 20m

Melbourne

Tue 10/6

7:30 am-8:05 pm

1 stop30h 35m

$995

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 8/17

10:34 am-11:50 am

2 stops32h 16m

Sydney Kingsford Smith

Fri 8/28

1:15 pm-10:39 am

3 stops38h 24m

$1,003

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 7/5

5:45 am-7:20 am

1 stop32h 35m

Sydney Kingsford Smith

Sun 7/19

9:20 am-10:42 pm

1 stop30h 22m

$1,004

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Mon 9/28

10:55 am-8:15 am

1 stop28h 20m

Melbourne

Sun 10/18

11:55 am-12:23 pm

1 stop18h 28m

$1,010

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Mon 9/28

5:00 am-7:30 am

2 stops33h 30m

Melbourne

Sun 10/18

11:55 am-12:23 pm

1 stop18h 28m

$1,015

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 7/5

5:45 am-7:20 am

1 stop32h 35m

Sydney Kingsford Smith

Sun 7/19

9:20 am-10:42 pm

1 stop30h 22m

$1,017

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Thu 8/6

11:40 am-6:45 am

1 stop26h 05m

Melbourne

Wed 8/19

1:35 pm-10:26 pm

1 stop25h 51m

$1,063

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Mon 10/26

2:45 pm-9:30 am

1 stop24h 45m

Melbourne

Thu 11/19

12:00 pm-10:59 pm

1 stop29h 59m

$1,080

Quickest round-trip

PortlandSydney

PDX - SYD

PDXSYD

Portland

Mon 8/24

8:00 am-6:50 pm

1 stop17h 50m

Sydney Kingsford Smith

Sun 8/30

8:45 pm-8:46 pm

1 stop17h 01m

$1,081

PortlandSydney

PDX - SYD

PDXSYD

Portland

Mon 8/31

8:00 am-6:50 pm

1 stop17h 50m

Sydney Kingsford Smith

Sun 9/13

8:45 pm-8:46 pm

1 stop17h 01m

$1,095

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 January is, on average, the cheapest month to fly to Australia from State of Washington, with most prices found around $97. If you aren’t able to travel during the month of January, then book flights to Australia from State of Washington during February instead. Flights to Australia in February, while not as cheap as those in January, still average around $142.

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 $1,067 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 $934 on momondo.

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

You could potentially save up to 29% 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 50m
Direct flights	None

The fastest flight from State of Washington to Australia takes 17h 50m

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 June 2026, 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
Alaska Airlines	PriceFrom $97	Free Cancellation	Rating 7.9 12,556 reviews	Search Alaska Airlines flights
Air Canada	PriceFrom $385	Free Cancellation	Rating 7.1 11,231 reviews	Search Air Canada flights
ANA	PriceFrom $583	Free Cancellation	Rating 8.3 1,248 reviews	Search ANA flights
United Airlines	PriceFrom $598	Free Cancellation	Rating 7.4 9,868 reviews	Search United Airlines flights
Qantas Airways	PriceFrom $621	Free Cancellation	Rating 7.5 1,047 reviews	Search Qantas Airways flights
American Airlines	PriceFrom $804	Free Cancellation	Rating 7.1 11,724 reviews	Search American Airlines flights
Hawaiian Airlines	PriceFrom $813	Free Cancellation	Rating 7.8 2,827 reviews	Search Hawaiian Airlines flights
Delta	PriceFrom $842	Free Cancellation	Rating 7.8 8,423 reviews	Search Delta flights
Air New Zealand	PriceFrom $947	Free Cancellation	Rating 8.0 645 reviews	Search Air New Zealand flights
Cathay Pacific	PriceFrom $1,153	Free Cancellation	Rating 7.6 1,388 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.