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 20h 45m. Keep in mind that layovers or delays could extend your travel time.

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

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

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 12 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 March 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.

$388 Cheap Flights from Washington to Australia in 2026

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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.

10:10 am - 7:05 am

PDX

BNE

27h 55m

1 stop

10:15 am - 9:30 am

BNE

PDX

16h 15m

1 stop

$856Air Canada

Tue, Jun 9 - Tue, Jun 16

10:10 am - 7:05 am

PDX

BNE

27h 55m

1 stop

10:00 am - 2:45 pm

BNE

PDX

21h 45m

1 stop

$859Air Canada

Wed, May 13 - Wed, May 27

7:59 pm - 6:50 am

SEA

SYD

41h 51m

1 stop

9:15 am - 8:25 pm

SYD

SEA

28h 10m

1 stop

$873Delta

Mon, Apr 13 - Mon, Apr 27

7:59 pm - 6:50 am

SEA

SYD

41h 51m

1 stop

9:15 am - 6:26 pm

SYD

SEA

26h 11m

1 stop

$877Delta

Mon, Apr 13 - Mon, Apr 27

3:30 pm - 7:05 am

PDX

BNE

22h 35m

1 stop

7:25 pm - 9:30 am

BNE

PDX

31h 05m

2 stops

$888Multiple Airlines

Wed, May 13 - Wed, May 27

3:30 pm - 7:05 am

PDX

BNE

22h 35m

1 stop

8:40 pm - 9:30 am

BNE

PDX

29h 50m

2 stops

$889Multiple Airlines

Tue, May 5 - Tue, May 12

10:15 am - 5:10 am

SEA

PER

27h 55m

1 stop

6:25 am - 8:45 am

PER

SEA

41h 20m

1 stop

$1,158Singapore Airlines

Thu, Sep 3 - Sat, Oct 3

10:15 am - 12:30 pm

SEA

PER

35h 15m

1 stop

4:55 pm - 8:45 am

PER

SEA

30h 50m

1 stop

$1,159Singapore Airlines

Thu, Sep 3 - Sat, Oct 3

4:49 pm - 9:50 pm

SEA

HBA

36h 01m

2 stops

4:55 pm - 9:32 pm

HBA

SEA

45h 37m

2 stops

$1,376Qantas Airways

Sun, Aug 9 - Sat, Aug 22

5:05 pm - 4:15 pm

SEA

HBA

30h 10m

2 stops

11:25 am - 8:05 pm

HBA

SEA

25h 40m

2 stops

$1,588Qantas Airways

Sat, Sep 12 - Wed, Sep 16

Delta flights from State of Washington to Australia

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

Delta

Apr 13

SEA7:59 pmSeattle/Tacoma Intl

41h 51m

1 stop

SYD6:50 amSydney Kingsford Smith

Apr 27

SYD9:15 amSydney Kingsford Smith

26h 11m

1 stop

SEA6:26 pmSeattle/Tacoma Intl

$877

Delta

Apr 13

SEA7:59 pmSeattle/Tacoma Intl

41h 51m

1 stop

SYD6:50 amSydney Kingsford Smith

Apr 27

SYD9:15 amSydney Kingsford Smith

26h 11m

1 stop

SEA6:26 pmSeattle/Tacoma Intl

$878

Delta

Apr 19

SEA10:15 amSeattle/Tacoma Intl

27h 35m

1 stop

SYD6:50 amSydney Kingsford Smith

May 12

SYD9:15 amSydney Kingsford Smith

18h 40m

1 stop

SEA10:55 amSeattle/Tacoma Intl

$881

Air Canada flights from State of Washington to Australia

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

Air Canada

Jun 9

PDX10:10 amPortland

27h 55m

1 stop

BNE7:05 amBrisbane

Jun 16

BNE10:15 amBrisbane

16h 15m

1 stop

PDX9:30 amPortland

$856

Air Canada

May 13

PDX10:10 amPortland

27h 55m

1 stop

BNE7:05 amBrisbane

May 27

BNE10:00 amBrisbane

21h 45m

1 stop

PDX2:45 pmPortland

$859

Air Canada

May 5

PDX7:45 pmPortland

18h 20m

1 stop

BNE7:05 amBrisbane

May 12

BNE10:00 amBrisbane

21h 45m

1 stop

PDX2:45 pmPortland

$860

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Tue 6/9

10:10 am-7:05 am

1 stop27h 55m

Brisbane

Tue 6/16

10:15 am-9:30 am

1 stop16h 15m

$856

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Wed 5/13

10:10 am-7:05 am

1 stop27h 55m

Brisbane

Wed 5/27

10:00 am-2:45 pm

1 stop21h 45m

$859

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 4/13

7:59 pm-6:50 am

1 stop41h 51m

Sydney Kingsford Smith

Mon 4/27

9:15 am-8:25 pm

1 stop28h 10m

$873

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 4/13

7:59 pm-6:50 am

1 stop41h 51m

Sydney Kingsford Smith

Mon 4/27

9:15 am-6:26 pm

1 stop26h 11m

$877

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Wed 5/13

3:30 pm-7:05 am

1 stop22h 35m

Brisbane

Wed 5/27

7:25 pm-9:30 am

2 stops31h 05m

$888

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Tue 5/5

3:30 pm-7:05 am

1 stop22h 35m

Brisbane

Tue 5/12

8:40 pm-9:30 am

2 stops29h 50m

$889

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Thu 9/3

10:15 am-5:10 am

1 stop27h 55m

Perth

Sat 10/3

6:25 am-8:45 am

1 stop41h 20m

$1,158

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Thu 9/3

10:15 am-12:30 pm

1 stop35h 15m

Perth

Sat 10/3

4:55 pm-8:45 am

1 stop30h 50m

$1,159

SeattleHobart

SEA - HBA

SEAHBA

Seattle/Tacoma Intl

Sun 8/9

4:49 pm-9:50 pm

2 stops36h 01m

Hobart

Sat 8/22

4:55 pm-9:32 pm

2 stops45h 37m

$1,376

SeattleHobart

SEA - HBA

SEAHBA

Seattle/Tacoma Intl

Sat 9/12

5:05 pm-4:15 pm

2 stops30h 10m

Hobart

Wed 9/16

11:25 am-8:05 pm

2 stops25h 40m

$1,588

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 $824. If you aren’t able to travel during the month of August, then book flights to Australia from State of Washington during February instead. Flights to Australia in February, while not as cheap as those in August, still average around $857.

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 $1,071 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 $902 on momondo.

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

You could potentially save up to 17% 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

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 March 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 12,115 reviews	Search Alaska Airlines flights
Delta	PriceFrom $237	Free Cancellation	Rating 7.9 8,330 reviews	Search Delta flights
Air Canada	PriceFrom $385	Free Cancellation	Rating 7.1 10,842 reviews	Search Air Canada flights
ANA	PriceFrom $583	Free Cancellation	Rating 8.4 1,145 reviews	Search ANA flights
Qantas Airways	PriceFrom $621	Free Cancellation	Rating 7.5 1,010 reviews	Search Qantas Airways flights
American Airlines	PriceFrom $804	Free Cancellation	Rating 7.1 11,495 reviews	Search American Airlines flights
Hawaiian Airlines	PriceFrom $812	Free Cancellation	Rating 7.8 2,839 reviews	Search Hawaiian Airlines flights
United Airlines	PriceFrom $833	Free Cancellation	Rating 7.4 9,483 reviews	Search United Airlines flights
Alaska Airlines	PriceFrom $1,126	Free Cancellation	Rating 0.0	Search Alaska Airlines flights
Cathay Pacific	PriceFrom $1,153	Free Cancellation	Rating 7.6 1,231 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.