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

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

What airlines fly to Sydney?

Air Canada, United Airlines and Alaska Airlines 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 33% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 9 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.

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

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 June 2026, there are 9 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.

$444 Cheap Flights from Washington to Sydney in 2026

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Find the cheapest flights from Washington to Sydney

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:36 pm - 6:50 am

SEA

SYD

25h 14m

1 stop

9:15 am - 8:30 pm

SYD

SEA

28h 15m

1 stop

$990Delta

Mon, Aug 3 - Mon, Aug 10

9:40 am - 6:50 am

SEA

SYD

28h 10m

2 stops

9:15 am - 4:54 pm

SYD

SEA

24h 39m

2 stops

$994Delta

Mon, Aug 3 - Mon, Aug 10

9:30 am - 6:50 am

SEA

SYD

28h 20m

2 stops

9:15 am - 2:50 pm

SYD

SEA

22h 35m

1 stop

$995Delta

Tue, Jul 28 - Tue, Aug 11

3:40 pm - 8:15 pm

SEA

SYD

33h 35m

1 stop

12:25 pm - 6:22 pm

SYD

SEA

24h 57m

2 stops

$999ANA

Sun, Nov 1 - Sun, Nov 15

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

7:20 pm - 7:20 am

SEA

SYD

19h 00m

1 stop

9:20 am - 10:42 pm

SYD

SEA

30h 22m

1 stop

$1,006Air Canada

Sun, Jul 5 - Sun, Jul 19

12:20 pm - 9:05 am

SEA

SYD

25h 45m

1 stop

11:20 am - 11:14 am

SYD

SEA

18h 54m

1 stop

$1,018United Airlines

Wed, Nov 11 - Mon, Nov 30

7:05 am - 6:25 am

GEG

SYD

28h 20m

2 stops

11:15 am - 10:25 pm

SYD

GEG

30h 10m

1 stop

$1,072Multiple Airlines

Sun, Nov 1 - Sat, Nov 21

1:35 pm - 6:55 am

PSC

SYD

24h 20m

1 stop

10:20 am - 11:27 am

SYD

PSC

18h 07m

1 stop

$1,228United Airlines

Tue, Jul 28 - Fri, Jul 31

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ANA flights from State of Washington to Sydney

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

ANA

Nov 1

SEA3:40 pmSeattle/Tacoma Intl

33h 35m

1 stop

SYD8:15 pmSydney Kingsford Smith

Nov 15

SYD12:25 pmSydney Kingsford Smith

24h 57m

2 stops

SEA6:22 pmSeattle/Tacoma Intl

$999

ANA

Nov 1

SEA10:10 amSeattle/Tacoma Intl

39h 05m

2 stops

SYD8:15 pmSydney Kingsford Smith

Nov 15

SYD12:25 pmSydney Kingsford Smith

24h 57m

2 stops

SEA6:22 pmSeattle/Tacoma Intl

$1,019

Qantas Airways flights from State of Washington to Sydney

Our best Qantas Airways deals on State of Washington to Sydney flight tickets

Qantas Airways

Oct 28

SEA5:01 pmSeattle/Tacoma Intl

20h 59m

1 stop

SYD8:00 amSydney Kingsford Smith

Nov 19

SYD11:15 amSydney Kingsford Smith

20h 10m

1 stop

SEA12:25 pmSeattle/Tacoma Intl

$1,048

Qantas Airways

Nov 9

PDX5:00 pmPortland

22h 20m

2 stops

SYD10:20 amSydney Kingsford Smith

Nov 15

SYD9:25 pmSydney Kingsford Smith

18h 25m

1 stop

PDX8:50 pmPortland

$1,157

Qantas Airways

Oct 17

PDX5:00 pmPortland

22h 10m

2 stops

SYD9:10 amSydney Kingsford Smith

Oct 30

SYD9:25 pmSydney Kingsford Smith

17h 25m

1 stop

PDX8:50 pmPortland

$1,170

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 8/3

12:36 pm-6:50 am

1 stop25h 14m

Sydney Kingsford Smith

Mon 8/10

9:15 am-8:30 pm

1 stop28h 15m

$990

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 8/3

9:40 am-6:50 am

2 stops28h 10m

Sydney Kingsford Smith

Mon 8/10

9:15 am-4:54 pm

2 stops24h 39m

$994

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Tue 7/28

9:30 am-6:50 am

2 stops28h 20m

Sydney Kingsford Smith

Tue 8/11

9:15 am-2:50 pm

1 stop22h 35m

$995

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 11/1

3:40 pm-8:15 pm

1 stop33h 35m

Sydney Kingsford Smith

Sun 11/15

12:25 pm-6:22 pm

2 stops24h 57m

$999

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

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 7/5

7:20 pm-7:20 am

1 stop19h 00m

Sydney Kingsford Smith

Sun 7/19

9:20 am-10:42 pm

1 stop30h 22m

$1,006

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Wed 11/11

12:20 pm-9:05 am

1 stop25h 45m

Sydney Kingsford Smith

Mon 11/30

11:20 am-11:14 am

1 stop18h 54m

$1,018

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Sun 11/1

7:05 am-6:25 am

2 stops28h 20m

Sydney Kingsford Smith

Sat 11/21

11:15 am-10:25 pm

1 stop30h 10m

$1,072

Quickest round-trip

PascoSydney

PSC - SYD

PSCSYD

Pasco Tri Cities

Tue 7/28

1:35 pm-6:55 am

1 stop24h 20m

Sydney Kingsford Smith

Fri 7/31

10:20 am-11:27 am

1 stop18h 07m

$1,228

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 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?

In general, February 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 $142. If you are unable to visit Sydney during the month of February, then departing from State of Washington during the month October is also very affordable. Most momondo users find prices during this month for around $247.

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 $1,067 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 $934 on momondo.

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

You could potentially save up to 24% 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

Fastest flight time	17h 45m
Direct flights	None

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.

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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 updated daily.
How many operators does momondo search for flights from Washington to Sydney Kingsford Smith Airport?
As of June 2026, there are 9 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
ANA	PriceFrom $583	Free Cancellation	Rating 8.3 1,252 reviews	Search ANA flights
Alaska Airlines	PriceFrom $591	Free Cancellation	Rating 7.9 12,572 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $598	Free Cancellation	Rating 7.4 9,885 reviews	Search United Airlines flights
Air Canada	PriceFrom $778	Free Cancellation	Rating 7.1 11,254 reviews	Search Air Canada flights
Qantas Airways	PriceFrom $789	Free Cancellation	Rating 7.5 1,050 reviews	Search Qantas Airways flights
American Airlines	PriceFrom $804	Free Cancellation	Rating 7.1 11,754 reviews	Search American Airlines flights
Hawaiian Airlines	PriceFrom $813	Free Cancellation	Rating 7.8 2,826 reviews	Search Hawaiian Airlines flights
Delta	PriceFrom $842	Free Cancellation	Rating 7.8 8,434 reviews	Search Delta flights
Air New Zealand	PriceFrom $947	Free Cancellation	Rating 8.0 645 reviews	Search Air New Zealand flights

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

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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 $432

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 10/27. 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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ANA flights from State of Washington to Sydney

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

What is the cheapest month to fly to Sydney?

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

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

What airlines fly to Sydney?

How long does it take to fly to Sydney?

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Why use momondo?

An easier way to manage your Sydney trip

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