How long does it take to fly to Sydney?

If you’re flying from a popular airport in State of Washington, such as Seattle or Spokane, and flying into Sydney, then you can expect flight times to average 17h 45m and 22h 50m, respectively.

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

Alaska Airlines, United Airlines, and Qantas Airways are the most popular carriers operating from Washington to Sydney Kingsford Smith

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 refreshed on a daily basis.

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 stopovers 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 licence, 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.

$669 Cheap Flights from Washington to Sydney in 2026/27

Find the cheapest flights from Washington to Sydney

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One-way

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Cheap return flights

Enter your travel dates to find the best prices.

23:55 - 09:45SEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

40h 50m1 stop Manila Ninoy Aquino Intl

11:35 - 19:35SYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

25h 00m1 stop Manila Ninoy Aquino Intl

$1,302Philippine Airlines

Sun, 18 Apr - Sun, 25 Apr

23:55 - 09:45SEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

40h 50m1 stop Manila Ninoy Aquino Intl

11:35 - 19:35SYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

25h 00m1 stop Manila Ninoy Aquino Intl

$1,323Philippine Airlines

Sun, 18 Apr - Sun, 25 Apr

23:55 - 09:45SEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

40h 50m1 stop Manila Ninoy Aquino Intl

11:35 - 19:35SYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

25h 00m1 stop Manila Ninoy Aquino Intl

$1,330Philippine Airlines

Sun, 11 Apr - Sun, 25 Apr

21:30 - 09:50SEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

41h 20m1 stop Manila Ninoy Aquino Intl

11:30 - 18:45SYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

26h 15m1 stop Manila Ninoy Aquino Intl

$1,334Philippine Airlines

Mon, 22 Feb - Thu, 4 Mar

22:30 - 09:50SEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

41h 20m1 stop Manila Ninoy Aquino Intl

11:35 - 19:35SYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

25h 00m1 stop Manila Ninoy Aquino Intl

$1,337Philippine Airlines

Wed, 24 Mar - Wed, 21 Apr

21:30 - 09:50SEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

41h 20m1 stop Manila Ninoy Aquino Intl

11:30 - 19:45SYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

26h 15m1 stop Manila Ninoy Aquino Intl

$1,349Philippine Airlines

Mon, 8 Mar - Thu, 18 Mar

21:30 - 09:50SEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

41h 20m1 stop Manila Ninoy Aquino Intl

11:30 - 19:45SYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

26h 15m1 stop Manila Ninoy Aquino Intl

$1,373Philippine Airlines

Mon, 8 Mar - Thu, 18 Mar

21:30 - 09:50SEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

41h 20m1 stop Manila Ninoy Aquino Intl

11:30 - 18:45SYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

26h 15m1 stop Manila Ninoy Aquino Intl

$1,389Philippine Airlines

Mon, 1 Mar - Wed, 10 Mar

21:30 - 09:50SEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

41h 20m1 stop Manila Ninoy Aquino Intl

11:30 - 19:45SYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

26h 15m1 stop Manila Ninoy Aquino Intl

$1,401Philippine Airlines

Mon, 8 Mar - Wed, 17 Mar

21:30 - 09:50SEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

41h 20m1 stop Manila Ninoy Aquino Intl

11:30 - 18:45SYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

26h 15m1 stop Manila Ninoy Aquino Intl

$1,407Philippine Airlines

Sun, 21 Feb - Thu, 11 Mar

Cheap last-minute flights

Enter your travel dates to find the best prices.

07:00 - 19:45SEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

17h 45m1 stop Honolulu

21:40 - 20:20SYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

17h 40m1 stop Honolulu

$1,791Multiple Airlines

Thu, 12 Nov - Tue, 24 Nov

07:00 - 19:45SEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

17h 45m1 stop Honolulu

21:40 - 20:20SYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

17h 40m1 stop Honolulu

$1,806Multiple Airlines

Thu, 12 Nov - Thu, 26 Nov

19:35 - 09:20SEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

18h 45m1 stop San Francisco

11:20 - 11:44SYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

19h 24m1 stop Los Angeles

$1,810United Airlines

Sun, 15 Nov - Wed, 16 Dec

19:55 - 08:30SEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

41h 35m2 stops Salt Lake City Los Angeles

10:40 - 20:19SYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

28h 39m1 stop Los Angeles

$1,816Delta

Sat, 14 Nov - Wed, 16 Dec

21:20 - 08:30SEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

40h 10m1 stop Los Angeles

10:40 - 15:11SYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

23h 31m1 stop Los Angeles

$1,822Delta

Sat, 14 Nov - Wed, 16 Dec

16:59 - 09:00SEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

21h 01m1 stop Los Angeles

11:10 - 14:42SYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

22h 32m1 stop Los Angeles

$1,846Multiple Airlines

Thu, 12 Nov - Wed, 25 Nov

19:58 - 06:25SEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

39h 27m1 stop Los Angeles

21:40 - 23:59SYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

21h 19m1 stop Honolulu

$1,872Multiple Airlines

Sat, 14 Nov - Fri, 20 Nov

19:35 - 09:20SEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

18h 45m1 stop San Francisco

11:20 - 11:14SYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

18h 54m1 stop Los Angeles

$1,883United Airlines

Thu, 12 Nov - Wed, 25 Nov

05:35 - 08:30SEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

31h 55m2 stops Salt Lake City Los Angeles

10:40 - 23:59SYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

32h 19m2 stops Los Angeles Salt Lake City

$1,888Delta

Thu, 12 Nov - Wed, 25 Nov

18:30 - 09:05SEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

19h 35m1 stop Los Angeles

11:50 - 23:18SYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

30h 28m1 stop San Francisco

$1,893United Airlines

Sun, 15 Nov - Fri, 18 Dec

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Philippine Airlines flights from State of Washington to Sydney

Our best Philippine Airlines deals on State of Washington to Sydney flight tickets

Philippine Airlines

18 Apr

SEA23:55Seattle/Tacoma Intl

40h 50m

1 stop

SYD09:45Sydney Kingsford Smith

25 Apr

SYD11:35Sydney Kingsford Smith

25h 00m

1 stop

SEA19:35Seattle/Tacoma Intl

$1,302

Philippine Airlines

18 Apr

SEA23:55Seattle/Tacoma Intl

40h 50m

1 stop

SYD09:45Sydney Kingsford Smith

25 Apr

SYD11:35Sydney Kingsford Smith

25h 00m

1 stop

SEA19:35Seattle/Tacoma Intl

$1,323

Philippine Airlines

11 Apr

SEA23:55Seattle/Tacoma Intl

40h 50m

1 stop

SYD09:45Sydney Kingsford Smith

25 Apr

SYD11:35Sydney Kingsford Smith

25h 00m

1 stop

SEA19:35Seattle/Tacoma Intl

$1,330

Alaska Airlines flights from State of Washington to Sydney

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

Alaska Airlines

16 Mar

SEA19:10Seattle/Tacoma Intl

41h 15m

1 stop

SYD06:25Sydney Kingsford Smith

30 Mar

SYD10:20Sydney Kingsford Smith

31h 36m

1 stop

SEA23:56Seattle/Tacoma Intl

$1,600

Alaska Airlines

9 Feb

SEA06:00Seattle/Tacoma Intl

29h 25m

1 stop

SYD06:25Sydney Kingsford Smith

28 Feb

SYD11:15Sydney Kingsford Smith

18h 41m

1 stop

SEA10:56Seattle/Tacoma Intl

$1,613

Alaska Airlines

19 Feb

GEG13:48Spokane

21h 37m

1 stop

SYD06:25Sydney Kingsford Smith

8 Mar

SYD11:15Sydney Kingsford Smith

28h 44m

2 stops

GEG20:59Spokane

$1,617

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

SeattleSydney

SEA Seattle/Tacoma Intl - SYD Sydney Kingsford Smith

SEASYD

Seattle/Tacoma Intl

Sun 18/4

23:55-09:45

1 stop40h 50m

Sydney Kingsford Smith

Sun 25/4

11:35-19:35

1 stop25h 00m

$1,302

SeattleSydney

SEA Seattle/Tacoma Intl - SYD Sydney Kingsford Smith

SEASYD

Seattle/Tacoma Intl

Sun 18/4

23:55-09:45

1 stop40h 50m

Sydney Kingsford Smith

Sun 25/4

11:35-19:35

1 stop25h 00m

$1,323

SeattleSydney

SEA Seattle/Tacoma Intl - SYD Sydney Kingsford Smith

SEASYD

Seattle/Tacoma Intl

Sun 11/4

23:55-09:45

1 stop40h 50m

Sydney Kingsford Smith

Sun 25/4

11:35-19:35

1 stop25h 00m

$1,330

SeattleSydney

SEA Seattle/Tacoma Intl - SYD Sydney Kingsford Smith

SEASYD

Seattle/Tacoma Intl

Mon 22/2

21:30-09:50

1 stop41h 20m

Sydney Kingsford Smith

Thu 4/3

11:30-18:45

1 stop26h 15m

$1,334

SeattleSydney

SEA Seattle/Tacoma Intl - SYD Sydney Kingsford Smith

SEASYD

Seattle/Tacoma Intl

Wed 24/3

22:30-09:50

1 stop41h 20m

Sydney Kingsford Smith

Wed 21/4

11:35-19:35

1 stop25h 00m

$1,337

SeattleSydney

SEA Seattle/Tacoma Intl - SYD Sydney Kingsford Smith

SEASYD

Seattle/Tacoma Intl

Mon 8/3

21:30-09:50

1 stop41h 20m

Sydney Kingsford Smith

Thu 18/3

11:30-19:45

1 stop26h 15m

$1,349

SeattleSydney

SEA Seattle/Tacoma Intl - SYD Sydney Kingsford Smith

SEASYD

Seattle/Tacoma Intl

Mon 8/3

21:30-09:50

1 stop41h 20m

Sydney Kingsford Smith

Thu 18/3

11:30-19:45

1 stop26h 15m

$1,373

SeattleSydney

SEA Seattle/Tacoma Intl - SYD Sydney Kingsford Smith

SEASYD

Seattle/Tacoma Intl

Mon 1/3

21:30-09:50

1 stop41h 20m

Sydney Kingsford Smith

Wed 10/3

11:30-18:45

1 stop26h 15m

$1,389

SeattleSydney

SEA Seattle/Tacoma Intl - SYD Sydney Kingsford Smith

SEASYD

Seattle/Tacoma Intl

Mon 8/3

21:30-09:50

1 stop41h 20m

Sydney Kingsford Smith

Wed 17/3

11:30-19:45

1 stop26h 15m

$1,401

SeattleSydney

SEA Seattle/Tacoma Intl - SYD Sydney Kingsford Smith

SEASYD

Seattle/Tacoma Intl

Sun 21/2

21:30-09:50

1 stop41h 20m

Sydney Kingsford Smith

Thu 11/3

11:30-18:45

1 stop26h 15m

$1,407

Flights are sorted by cheapest return flights first.

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

Airlines

Other information

What is the cheapest month to fly to Sydney?

The month of September is, on average, the cheapest month to fly to Sydney from State of Washington, with most prices found around $1,514. If you aren’t able to travel to Sydney during the month of September, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $1,581.

How far in advance should I book a flight from Washington 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 $1,751 when searching weeks before you fly. 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 $1,450 on momondo.

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

Best price found	$669
Fastest flight time	17h 45m
Direct flights	None

The best one-way flight to Sydney from State of Washington in the past 72 hours is $669. The best return flight deal from State of Washington to Sydney found on momondo in the last 72 hours is $1,302.

The fastest flight from State of Washington to Sydney takes 17h 45m

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

Frequently asked questions about flying from Washington to Sydney

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 refreshed on a daily basis.
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 stopovers 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 licence, 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.

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Why use momondo?

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

It is quick and easy to find Washington to Sydney flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Sydney that suits you.

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

Yes. momondo allows you to filter the results for Washington to Sydney flights to just show those with flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight 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?

Yes momondo offers price alerts on flights to Sydney from Washington. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.