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

Air Canada is the most popular carrier 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 31% 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 Spokane and flying into Sydney (one of the most popular routes), then the duration is 20h 18m on average. Another popular route from State of Washington to Sydney is flying from Seattle to Sydney, which will take roughly 20h 23m. 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 March 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.

$390 Cheap Flights from Washington to Sydney in 2026

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Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:15 pm - 7:05 am

SEA

SYD

18h 50m

1 stop

5:50 pm - 8:59 pm

SYD

SEA

20h 09m

1 stop

$880Multiple Airlines

Tue, Jul 28 - Tue, Aug 11

11:40 am - 6:50 am

SEA

SYD

26h 10m

1 stop

9:15 am - 4:53 pm

SYD

SEA

24h 38m

1 stop

$882Delta

Sun, Apr 19 - Mon, May 11

5:59 pm - 7:30 am

SEA

SYD

20h 31m

1 stop

9:10 am - 1:01 pm

SYD

SEA

20h 51m

1 stop

$885Multiple Airlines

Mon, Apr 13 - Tue, Apr 28

5:06 pm - 7:05 am

SEA

SYD

20h 59m

1 stop

9:10 am - 1:03 pm

SYD

SEA

20h 53m

1 stop

$890Qantas Airways

Wed, May 6 - Wed, May 27

6:40 pm - 7:05 am

SEA

SYD

19h 25m

1 stop

5:50 pm - 7:53 pm

SYD

SEA

19h 03m

1 stop

$892Qantas Airways

Sun, Apr 19 - Mon, May 11

5:40 am - 7:20 am

SEA

SYD

32h 40m

1 stop

9:20 am - 7:20 pm

SYD

SEA

27h 00m

1 stop

$894Air Canada

Mon, Apr 13 - Wed, Apr 22

3:30 pm - 7:20 am

PDX

SYD

22h 50m

1 stop

9:20 am - 2:45 pm

SYD

PDX

22h 25m

1 stop

$958Air Canada

Sat, May 16 - Sun, May 24

5:05 am - 7:00 am

GEG

SYD

32h 55m

2 stops

9:30 am - 3:15 pm

SYD

GEG

22h 45m

2 stops

$960United Airlines

Tue, Apr 14 - Tue, Apr 21

5:00 am - 6:55 am

PSC

SYD

32h 55m

2 stops

9:30 am - 8:53 pm

SYD

PSC

28h 23m

2 stops

$1,009United Airlines

Sun, May 3 - Sun, May 10

1:20 pm - 7:05 am

GEG

SYD

24h 45m

2 stops

12:00 pm - 8:33 pm

SYD

GEG

25h 33m

1 stop

$1,056American Airlines

Thu, Apr 30 - Thu, May 7

Air Canada flights from State of Washington to Sydney

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

Air Canada

Apr 13

SEA5:40 amSeattle/Tacoma Intl

32h 40m

1 stop

SYD7:20 amSydney Kingsford Smith

Apr 22

SYD9:20 amSydney Kingsford Smith

27h 00m

1 stop

SEA7:20 pmSeattle/Tacoma Intl

$894

Air Canada

May 5

SEA2:55 pmSeattle/Tacoma Intl

23h 25m

1 stop

SYD7:20 amSydney Kingsford Smith

May 12

SYD7:00 amSydney Kingsford Smith

19h 50m

2 stops

SEA9:50 amSeattle/Tacoma Intl

$920

Air Canada

Apr 13

SEA8:00 pmSeattle/Tacoma Intl

22h 40m

2 stops

SYD11:40 amSydney Kingsford Smith

Apr 22

SYD9:20 amSydney Kingsford Smith

22h 45m

1 stop

SEA3:05 pmSeattle/Tacoma Intl

$925

Qantas Airways flights from State of Washington to Sydney

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

Qantas Airways

May 6

SEA5:06 pmSeattle/Tacoma Intl

20h 59m

1 stop

SYD7:05 amSydney Kingsford Smith

May 27

SYD9:10 amSydney Kingsford Smith

20h 53m

1 stop

SEA1:03 pmSeattle/Tacoma Intl

$890

Qantas Airways

Apr 19

SEA6:40 pmSeattle/Tacoma Intl

19h 25m

1 stop

SYD7:05 amSydney Kingsford Smith

May 11

SYD5:50 pmSydney Kingsford Smith

19h 03m

1 stop

SEA7:53 pmSeattle/Tacoma Intl

$892

Qantas Airways

Jun 3

SEA4:28 pmSeattle/Tacoma Intl

21h 37m

1 stop

SYD7:05 amSydney Kingsford Smith

Jun 24

SYD9:10 amSydney Kingsford Smith

29h 39m

1 stop

SEA9:49 pmSeattle/Tacoma Intl

$908

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Tue 7/28

7:15 pm-7:05 am

1 stop18h 50m

Sydney Kingsford Smith

Tue 8/11

5:50 pm-8:59 pm

1 stop20h 09m

$880

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 4/19

11:40 am-6:50 am

1 stop26h 10m

Sydney Kingsford Smith

Mon 5/11

9:15 am-4:53 pm

1 stop24h 38m

$882

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 4/13

5:59 pm-7:30 am

1 stop20h 31m

Sydney Kingsford Smith

Tue 4/28

9:10 am-1:01 pm

1 stop20h 51m

$885

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Wed 5/6

5:06 pm-7:05 am

1 stop20h 59m

Sydney Kingsford Smith

Wed 5/27

9:10 am-1:03 pm

1 stop20h 53m

$890

Quickest round-trip

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 4/19

6:40 pm-7:05 am

1 stop19h 25m

Sydney Kingsford Smith

Mon 5/11

5:50 pm-7:53 pm

1 stop19h 03m

$892

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 4/13

5:40 am-7:20 am

1 stop32h 40m

Sydney Kingsford Smith

Wed 4/22

9:20 am-7:20 pm

1 stop27h 00m

$894

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sat 5/16

3:30 pm-7:20 am

1 stop22h 50m

Sydney Kingsford Smith

Sun 5/24

9:20 am-2:45 pm

1 stop22h 25m

$958

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Tue 4/14

5:05 am-7:00 am

2 stops32h 55m

Sydney Kingsford Smith

Tue 4/21

9:30 am-3:15 pm

2 stops22h 45m

$960

PascoSydney

PSC - SYD

PSCSYD

Pasco Tri Cities

Sun 5/3

5:00 am-6:55 am

2 stops32h 55m

Sydney Kingsford Smith

Sun 5/10

9:30 am-8:53 pm

2 stops28h 23m

$1,009

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Thu 4/30

1:20 pm-7:05 am

2 stops24h 45m

Sydney Kingsford Smith

Thu 5/7

12:00 pm-8:33 pm

1 stop25h 33m

$1,056

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, August 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 $824. If you are unable to visit Sydney during the month of August, then departing from State of Washington during the month February is also very affordable. Most momondo users find prices during this month for around $857.

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 $1,071 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 $902 on momondo.

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

You could potentially save up to 7% 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	18h 45m
Direct flights	None

The fastest flight from State of Washington to Sydney takes 18h 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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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 March 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 8.4 1,135 reviews	Search ANA flights
Alaska Airlines	PriceFrom $591	Free Cancellation	Rating 7.9 12,089 reviews	Search Alaska Airlines flights
Air Canada	PriceFrom $779	Free Cancellation	Rating 7.1 10,818 reviews	Search Air Canada flights
Qantas Airways	PriceFrom $786	Free Cancellation	Rating 7.5 1,006 reviews	Search Qantas Airways flights
American Airlines	PriceFrom $804	Free Cancellation	Rating 7.1 11,489 reviews	Search American Airlines flights
Hawaiian Airlines	PriceFrom $812	Free Cancellation	Rating 7.8 2,841 reviews	Search Hawaiian Airlines flights
United Airlines	PriceFrom $841	Free Cancellation	Rating 7.4 9,455 reviews	Search United Airlines flights
Delta	PriceFrom $842	Free Cancellation	Rating 7.9 8,311 reviews	Search Delta flights
Alaska Airlines	PriceFrom $1,126	Free Cancellation	Rating 0.0	Search Alaska Airlines flights

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington to Sydney. momondo saves you time and could save you money on your trip.

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 $390

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 8/12. 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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What is the cheapest airline that flies from Washington to Sydney Kingsford Smith?

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An easier way to manage your Sydney trip

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