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

Qantas Airways, Philippine Airlines, and American Airlines 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 25m on average. Another popular route from State of Washington to Australia is flying from Pasco to Sydney, which will take roughly 20h 09m. Keep in mind that layovers or delays could extend your travel time.

What airlines fly to Australia?

United Airlines, Air Canada and Delta 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 42% 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.

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 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.

$376 Cheap Flights from Washington to Australia in 2025/26

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Round-trip

One-way

Last minute

Cheap round-trip flights

10:35 am - 6:55 amSEA-SYD

25h 20m1 stop

11:20 am - 5:08 pmSYD-SEA

24h 48m2 stops

$814American Airlines

Find Deal

Thu, Nov 6 - Thu, Nov 13

6:05 am - 9:00 amSEA-SYD

31h 55m1 stop

11:20 am - 2:08 pmSYD-SEA

21h 48m2 stops

$815American Airlines

Find Deal

Wed, Nov 5 - Wed, Nov 12

10:05 am - 9:35 amSEA-SYD

28h 30m1 stop

11:20 am - 9:06 pmSYD-SEA

28h 46m1 stop

$820Air Canada

Find Deal

Thu, Feb 26 - Sun, Mar 8

5:55 pm - 7:45 pmSEA-SYD

30h 50m1 stop

9:40 pm - 11:52 pmSYD-SEA

21h 12m1 stop

$821Hawaiian Airlines

Find Deal

Wed, Dec 10 - Fri, Dec 26

5:55 pm - 7:45 pmSEA-SYD

30h 50m1 stop

9:40 pm - 11:52 pmSYD-SEA

21h 12m1 stop

$822Hawaiian Airlines

Find Deal

Wed, Dec 10 - Fri, Dec 26

8:45 pm - 7:45 pmSEA-SYD

29h 00m1 stop

9:40 pm - 10:56 pmSYD-SEA

19h 16m1 stop

$824Alaska Airlines

Find Deal

Sun, Oct 19 - Sun, Oct 26

4:30 pm - 7:30 amSEA-SYD

21h 00m1 stop

11:20 am - 1:02 pmSYD-SEA

20h 42m1 stop

$828Multiple Airlines

Find Deal

Mon, Oct 20 - Wed, Nov 5

7:00 am - 7:45 pmSEA-SYD

17h 45m1 stop

9:40 pm - 5:35 amSYD-SEA

26h 55m1 stop

$829Alaska Airlines

Find Deal

Mon, Nov 3 - Thu, Nov 13

3:40 pm - 9:35 amSEA-SYD

22h 55m1 stop

8:00 am - 9:31 amSYD-SEA

19h 31m2 stops

$835Air Canada

Find Deal

Fri, Feb 27 - Sun, Mar 22

6:50 pm - 8:05 amSEA-SYD

19h 15m1 stop

9:25 pm - 11:24 amSYD-SEA

31h 59m1 stop

$841Multiple Airlines

Find Deal

Sun, Oct 19 - Sun, Oct 26

American Airlines flights from State of Washington to Australia

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

American Airlines

Nov 6

SEA10:35 amSeattle/Tacoma Intl

25h 20m

1 stop

SYD6:55 amSydney Kingsford Smith

Nov 13

SYD11:20 amSydney Kingsford Smith

24h 48m

2 stops

SEA5:08 pmSeattle/Tacoma Intl

$814

Find similar

American Airlines

Nov 5

SEA6:05 amSeattle/Tacoma Intl

31h 55m

1 stop

SYD9:00 amSydney Kingsford Smith

Nov 12

SYD11:20 amSydney Kingsford Smith

21h 48m

2 stops

SEA2:08 pmSeattle/Tacoma Intl

$815

Find similar

American Airlines

Nov 6

SEA11:34 amSeattle/Tacoma Intl

24h 21m

1 stop

SYD6:55 amSydney Kingsford Smith

Nov 13

SYD11:20 amSydney Kingsford Smith

24h 48m

2 stops

SEA5:08 pmSeattle/Tacoma Intl

$816

Find similar

Air Canada flights from State of Washington to Australia

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

Air Canada

Feb 26

SEA10:05 amSeattle/Tacoma Intl

28h 30m

1 stop

SYD9:35 amSydney Kingsford Smith

Mar 8

SYD11:20 amSydney Kingsford Smith

28h 46m

1 stop

SEA9:06 pmSeattle/Tacoma Intl

$820

Find similar

Air Canada

Feb 27

SEA3:40 pmSeattle/Tacoma Intl

22h 55m

1 stop

SYD9:35 amSydney Kingsford Smith

Mar 22

SYD8:00 amSydney Kingsford Smith

19h 31m

2 stops

SEA9:31 amSeattle/Tacoma Intl

$835

Find similar

Air Canada

Mar 1

SEA8:00 pmSeattle/Tacoma Intl

23h 40m

2 stops

SYD2:40 pmSydney Kingsford Smith

Mar 8

SYD9:00 amSydney Kingsford Smith

24h 01m

2 stops

SEA2:01 pmSeattle/Tacoma Intl

$854

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

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Thu 11/6

10:35 am-6:55 am

1 stop25h 20m

Sydney Kingsford Smith

Thu 11/13

11:20 am-5:08 pm

2 stops24h 48m

$814

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Wed 11/5

6:05 am-9:00 am

1 stop31h 55m

Sydney Kingsford Smith

Wed 11/12

11:20 am-2:08 pm

2 stops21h 48m

$815

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Thu 2/26

10:05 am-9:35 am

1 stop28h 30m

Sydney Kingsford Smith

Sun 3/8

11:20 am-9:06 pm

1 stop28h 46m

$820

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Wed 12/10

5:55 pm-7:45 pm

1 stop30h 50m

Sydney Kingsford Smith

Fri 12/26

9:40 pm-11:52 pm

1 stop21h 12m

$821

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Wed 12/10

5:55 pm-7:45 pm

1 stop30h 50m

Sydney Kingsford Smith

Fri 12/26

9:40 pm-11:52 pm

1 stop21h 12m

$822

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 10/19

8:45 pm-7:45 pm

1 stop29h 00m

Sydney Kingsford Smith

Sun 10/26

9:40 pm-10:56 pm

1 stop19h 16m

$824

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 10/20

4:30 pm-7:30 am

1 stop21h 00m

Sydney Kingsford Smith

Wed 11/5

11:20 am-1:02 pm

1 stop20h 42m

$828

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 11/3

7:00 am-7:45 pm

1 stop17h 45m

Sydney Kingsford Smith

Thu 11/13

9:40 pm-5:35 am

1 stop26h 55m

$829

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Fri 2/27

3:40 pm-9:35 am

1 stop22h 55m

Sydney Kingsford Smith

Sun 3/22

8:00 am-9:31 am

2 stops19h 31m

$835

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 10/19

6:50 pm-8:05 am

1 stop19h 15m

Sydney Kingsford Smith

Sun 10/26

9:25 pm-11:24 am

1 stop31h 59m

$841

Flights are sorted by cheapest round-trip flights first.

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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 September is, on average, the cheapest month to fly to Australia from State of Washington, with most prices found around $941. If you aren’t able to travel during the month of September, then book flights to Australia from State of Washington during February instead. Flights to Australia in February, while not as cheap as those in September, still average around $967.

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 $1,092 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 $932 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

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 September 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
Alaska Airlines	PriceFrom $591	Free Cancellation	Rating 8.0 10,000 reviews	Search Alaska Airlines flights
Qantas Airways	PriceFrom $647	Free Cancellation	Rating 7.5 908 reviews	Search Qantas Airways flights
Air Canada	PriceFrom $780	Free Cancellation	Rating 7.1 10,000 reviews	Search Air Canada flights
ANA	PriceFrom $794	Free Cancellation	Rating 8.4 970 reviews	Search ANA flights
American Airlines	PriceFrom $804	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Hawaiian Airlines	PriceFrom $820	Free Cancellation	Rating 7.8 2,744 reviews	Search Hawaiian Airlines flights
United Airlines	PriceFrom $836	Free Cancellation	Rating 7.4 8,926 reviews	Search United Airlines flights
Delta	PriceFrom $842	Free Cancellation	Rating 7.9 7,974 reviews	Search Delta flights
Singapore Airlines	PriceFrom $1,239	Free Cancellation	Rating 8.1 1,372 reviews	Search Singapore Airlines flights
Qatar Airways	PriceFrom $1,315	Free Cancellation	Rating 7.4 3,626 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.

An easier way to manage your Australia trip

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Find better results for your trip to Australia

Popular cities in Australia

Flights to Sydneyfrom $472

Flights to Melbournefrom $764

Flights to Brisbanefrom $782

Flights to Perthfrom $881

Flights to Adelaidefrom $909

Flights to Cairnsfrom $979

Flights to Coolangattafrom $872

Flights to Hobartfrom $1,091

Flights to Canberrafrom $881

Flights to Darwinfrom $1,106

Flights to Maroochydorefrom $1,033

Flights to Launcestonfrom $996

Cheap flights from Washington to Australia from $376

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Australia departing on 11/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Filter for what you want

Filter for what you want

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Find the cheapest flights from Washington to Australia

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

American Airlines flights from State of Washington to Australia

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

Air Canada flights from State of Washington to Australia

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

momondo Fare Finder

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

See travel insights to Australia from

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

What is the cheapest month to fly to Australia?

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

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

How far in advance should I book a flight to Australia?

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.

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

Qantas Airways, Philippine Airlines, and American Airlines are the most popular carriers operating from Washington to Australia

What airlines fly to Australia?

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

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

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

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

How old do you have to be to fly from Washington to Australia?

What documentation or ID do you need to fly to Australia?

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

Why use momondo?

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

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

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

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

An easier way to manage your Australia trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Australia

Popular cities in Australia

Popular flights according to clicks in the last 7 days on momondo