How long does it take to fly to Sydney?

Flight times from State of Washington to Sydney 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 Sydney is flying from Pasco to Sydney, which will take roughly 23h 25m. Keep in mind that layovers or delays could extend your travel time.

What is the cheapest airline that flies from Washington to Sydney Kingsford Smith?

Air Canada, Qantas Airways, and Philippine Airlines are the most popular carriers operating from Washington to Sydney Kingsford Smith

What airlines fly to Sydney?

Air Canada, United Airlines and Delta are the top three most popular airlines that fly to Sydney from State of Washington according to our data. Air Canada is the first choice among our users, with 32% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 8 different airlines that fly to Sydney 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 Sydney Kingsford Smith Airport?

Prices for flights from Washington to Sydney Kingsford Smith Airport are updated daily.

How many operators does momondo search for flights from Washington to Sydney Kingsford Smith Airport?

As of September 2025, there are 8 operators available to choose from for flights from Washington to Sydney Kingsford Smith Airport.

How old do you have to be to fly from Washington to Sydney Kingsford Smith Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington to Sydney Kingsford Smith Airport.

What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

The travel and health documents required for your trip to Sydney Kingsford Smith Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Sydney Kingsford Smith Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$367 Cheap Flights from Washington to Sydney in 2025/26

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Round-trip

One-way

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Cheap round-trip flights

5:30 pm - 9:00 amSEA-SYD

20h 30m1 stop

11:20 am - 1:02 pmSYD-SEA

20h 42m1 stop

$826Qantas Airways

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Tue, Nov 11 - Tue, Nov 18

5:59 pm - 9:00 amSEA-SYD

20h 01m1 stop

5:45 pm - 7:55 pmSYD-SEA

21h 10m1 stop

$827Qantas Airways

Find Deal

Wed, Dec 3 - Wed, Jan 21

7:15 am - 7:45 pmSEA-SYD

17h 30m1 stop

9:40 pm - 9:45 pmSYD-SEA

19h 05m2 stops

$828Alaska Airlines

Find Deal

Thu, Jan 15 - Wed, Jan 28

12:00 pm - 6:50 amSEA-SYD

23h 50m1 stop

10:40 am - 5:00 pmSYD-SEA

25h 20m2 stops

$831Delta

Find Deal

Thu, Jan 15 - Fri, Jan 30

5:30 pm - 9:00 amSEA-SYD

21h 30m1 stop

5:45 pm - 8:23 pmSYD-SEA

21h 38m1 stop

$837Multiple Airlines

Find Deal

Sat, Nov 1 - Fri, Nov 21

12:45 pm - 8:30 amSEA-SYD

24h 45m1 stop

10:40 am - 12:39 pmSYD-SEA

20h 59m1 stop

$844Delta

Find Deal

Sun, Nov 2 - Sun, Nov 16

4:45 pm - 7:45 pmSEA-SYD

33h 00m1 stop

9:40 pm - 7:09 amSYD-SEA

27h 29m2 stops

$845Alaska Airlines

Find Deal

Sun, Oct 19 - Sun, Oct 26

9:30 pm - 9:50 amSEA-SYD

41h 20m1 stop

11:35 am - 6:40 pmSYD-SEA

26h 05m1 stop

$848Philippine Airlines

Find Deal

Fri, Feb 20 - Wed, Feb 25

4:30 pm - 8:05 amSEA-SYD

21h 35m1 stop

9:25 pm - 10:00 pmSYD-SEA

18h 35m1 stop

$855Multiple Airlines

Find Deal

Fri, Oct 24 - Fri, Oct 31

9:30 pm - 9:50 amSEA-SYD

41h 20m1 stop

11:35 am - 7:40 pmSYD-SEA

26h 05m1 stop

$856Philippine Airlines

Find Deal

Fri, Feb 27 - Fri, Mar 13

Air Canada flights from State of Washington to Sydney

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

Air Canada

Mar 8

SEA3:40 pmSeattle/Tacoma Intl

27h 00m

2 stops

SYD12:40 pmSydney Kingsford Smith

Mar 12

SYD8:00 amSydney Kingsford Smith

25h 01m

2 stops

SEA3:01 pmSeattle/Tacoma Intl

$863

Find similar

Air Canada

Oct 19

SEA2:55 pmSeattle/Tacoma Intl

26h 45m

2 stops

SYD11:40 amSydney Kingsford Smith

Oct 26

SYD8:00 amSydney Kingsford Smith

19h 31m

2 stops

SEA9:31 amSeattle/Tacoma Intl

$966

Find similar

Air Canada

Nov 11

PDX7:00 pmPortland

19h 35m

1 stop

SYD9:35 amSydney Kingsford Smith

Nov 18

SYD11:20 amSydney Kingsford Smith

16h 55m

1 stop

PDX9:15 amPortland

$1,000

Find similar

Delta flights from State of Washington to Sydney

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

Delta

Jan 15

SEA12:00 pmSeattle/Tacoma Intl

23h 50m

1 stop

SYD6:50 amSydney Kingsford Smith

Jan 30

SYD10:40 amSydney Kingsford Smith

25h 20m

2 stops

SEA5:00 pmSeattle/Tacoma Intl

$831

Find similar

Delta

Nov 2

SEA12:45 pmSeattle/Tacoma Intl

24h 45m

1 stop

SYD8:30 amSydney Kingsford Smith

Nov 16

SYD10:40 amSydney Kingsford Smith

20h 59m

1 stop

SEA12:39 pmSeattle/Tacoma Intl

$844

Find similar

Delta

Nov 9

SEA11:15 amSeattle/Tacoma Intl

26h 15m

2 stops

SYD8:30 amSydney Kingsford Smith

Nov 27

SYD10:40 amSydney Kingsford Smith

26h 59m

2 stops

SEA6:39 pmSeattle/Tacoma Intl

$849

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Tue 11/11

5:30 pm-9:00 am

1 stop20h 30m

Sydney Kingsford Smith

Tue 11/18

11:20 am-1:02 pm

1 stop20h 42m

$826

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Wed 12/3

5:59 pm-9:00 am

1 stop20h 01m

Sydney Kingsford Smith

Wed 1/21

5:45 pm-7:55 pm

1 stop21h 10m

$827

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Thu 1/15

7:15 am-7:45 pm

1 stop17h 30m

Sydney Kingsford Smith

Wed 1/28

9:40 pm-9:45 pm

2 stops19h 05m

$828

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Thu 1/15

12:00 pm-6:50 am

1 stop23h 50m

Sydney Kingsford Smith

Fri 1/30

10:40 am-5:00 pm

2 stops25h 20m

$831

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sat 11/1

5:30 pm-9:00 am

1 stop21h 30m

Sydney Kingsford Smith

Fri 11/21

5:45 pm-8:23 pm

1 stop21h 38m

$837

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 11/2

12:45 pm-8:30 am

1 stop24h 45m

Sydney Kingsford Smith

Sun 11/16

10:40 am-12:39 pm

1 stop20h 59m

$844

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 10/19

4:45 pm-7:45 pm

1 stop33h 00m

Sydney Kingsford Smith

Sun 10/26

9:40 pm-7:09 am

2 stops27h 29m

$845

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Fri 2/20

9:30 pm-9:50 am

1 stop41h 20m

Sydney Kingsford Smith

Wed 2/25

11:35 am-6:40 pm

1 stop26h 05m

$848

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Fri 10/24

4:30 pm-8:05 am

1 stop21h 35m

Sydney Kingsford Smith

Fri 10/31

9:25 pm-10:00 pm

1 stop18h 35m

$855

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Fri 2/27

9:30 pm-9:50 am

1 stop41h 20m

Sydney Kingsford Smith

Fri 3/13

11:35 am-7:40 pm

1 stop26h 05m

$856

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Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from State of Washington to Sydney

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

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Other information

What is the cheapest month to fly to Sydney?

In general, September is the cheapest month to fly from State of Washington to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $915. If you are unable to visit Sydney during the month of September, then departing from State of Washington during the month February is also very affordable. Most momondo users find prices during this month for around $963.

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

The cheapest day to depart from State of Washington to Sydney is on a Tuesday when prices can be found for as low as $1,078. The most expensive day to fly to Sydney is Thursday, with ticket prices averaging around $1,156.

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

According to our data, the cheapest time of day to fly to Sydney is in the evening. momondo users have found flights departing from State of Washington to Sydney in the evening for as low as $1,078. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Sydney are more costly in the morning, with an average ticket price of $1,152. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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

You are more likely to see cheaper flights to Sydney from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $1,089 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from State of Washington for as low as $909 on momondo.

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

You could potentially save up to 33% on your flight if you consider stops on a State of Washington to Sydney flight.

Cheap State of Washington to Sydney flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Sydney

Direct flights	None

There are no direct flights from State of Washington to Sydney. There are no popular flight routes from State of Washington to Sydney.

Search flight deals

When did momondo last update prices for flights from Washington to Sydney Kingsford Smith Airport?
Prices for flights from Washington to Sydney Kingsford Smith Airport are updated daily.
How many operators does momondo search for flights from Washington to Sydney Kingsford Smith Airport?
As of September 2025, there are 8 operators available to choose from for flights from Washington to Sydney Kingsford Smith Airport.
How old do you have to be to fly from Washington to Sydney Kingsford Smith Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington to Sydney Kingsford Smith Airport.
What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?
The travel and health documents required for your trip to Sydney Kingsford Smith Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Sydney Kingsford Smith Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from State of Washington to Sydney

Compare and see reviews for airlines that fly from State of Washington to Sydney with momondo

Airline	Rating	Free Cancellation	Price
Alaska Airlines	PriceFrom $591	Free Cancellation	Rating 8.0 10,000 reviews	Search Alaska Airlines flights
Air Canada	PriceFrom $780	Free Cancellation	Rating 7.1 10,000 reviews	Search Air Canada flights
Qantas Airways	PriceFrom $789	Free Cancellation	Rating 7.6 910 reviews	Search Qantas Airways flights
ANA	PriceFrom $794	Free Cancellation	Rating 8.4 973 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 2,760 reviews	Search Hawaiian Airlines flights
United Airlines	PriceFrom $833	Free Cancellation	Rating 7.4 8,924 reviews	Search United Airlines flights
Delta	PriceFrom $842	Free Cancellation	Rating 7.9 7,964 reviews	Search Delta flights

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

Yes. momondo enables you to select and highlight flights to Sydney from Washington with this policy.

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

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 Sydney from Washington.

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

Price alerts on flights to Sydney from Washington are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Cheap flights from Washington to Sydney from $367

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 Sydney departing on 11/29. 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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How to get the cheapest flight ticket from State of Washington to Sydney

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 Sydney?

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

The cheapest day to depart from State of Washington to Sydney is on a Tuesday when prices can be found for as low as $1,078. The most expensive day to fly to Sydney is Thursday, with ticket prices averaging around $1,156.

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

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

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

You could potentially save up to 33% on your flight if you consider stops on a State of Washington to Sydney flight.

What is the cheapest airline that flies from Washington to Sydney Kingsford Smith?

Air Canada, Qantas Airways, and Philippine Airlines are the most popular carriers operating from Washington to Sydney Kingsford Smith

What airlines fly to Sydney?

How long does it take to fly to Sydney?

Cheap State of Washington to Sydney flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Sydney

Direct flights

When did momondo last update prices for flights from Washington to Sydney Kingsford Smith Airport?

How many operators does momondo search for flights from Washington to Sydney Kingsford Smith Airport?

How old do you have to be to fly from Washington to Sydney Kingsford Smith Airport?

What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

Best airlines flying from State of Washington to Sydney

Compare and see reviews for airlines that fly from State of Washington to Sydney with momondo

Traveling to a place near Sydney?

Why use momondo?

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

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

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

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

An easier way to manage your Sydney 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

Airports servicing New South Wales