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 18h 30m on average. Another popular route from State of Washington to Sydney is flying from Spokane to Sydney, which will take roughly 20h 36m. 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?

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

What airlines fly to Sydney?

Air Canada, United Airlines and ANA 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 36% 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.

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 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.

$489 Cheap Flights from Washington to Sydney in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Washington to Sydney

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

10:10 am - 8:35 amSEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

28h 25m1 stop Vancouver Intl

11:20 am - 9:32 amSYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

17h 12m1 stop Vancouver Intl

$877Air Canada

Tue, Oct 27 - Fri, Nov 6

10:50 am - 8:20 amSEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

27h 30m1 stop Vancouver Intl

11:20 am - 7:22 pmSYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

26h 02m1 stop Vancouver Intl

$897Air Canada

Sun, Oct 18 - Sun, Nov 1

7:00 pm - 9:35 amSEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

19h 35m1 stop Vancouver Intl

6:20 am - 9:15 amSYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

20h 55m2 stops Brisbane Vancouver Intl

$911Multiple Airlines

Mon, Mar 1 - Wed, Mar 17

10:50 am - 8:20 amSEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

27h 30m1 stop Vancouver Intl

6:20 am - 10:32 amSYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

22h 12m2 stops Brisbane Vancouver Intl

$923Multiple Airlines

Mon, Oct 19 - Sun, Nov 1

8:40 am - 9:35 amSEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

29h 55m1 stop Vancouver Intl

11:20 am - 9:32 amSYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

17h 12m1 stop Vancouver Intl

$991Air New Zealand

Tue, Feb 2 - Sun, Feb 28

8:40 am - 9:35 amSEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

29h 55m1 stop Vancouver Intl

11:20 am - 9:30 amSYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

17h 10m1 stop Vancouver Intl

$991Air New Zealand

Tue, Feb 2 - Tue, Mar 2

5:24 pm - 9:00 amGEG Spokane-SYD Sydney Kingsford Smith

20h 36m1 stop Los Angeles

2:05 pm - 8:40 pmSYD Sydney Kingsford Smith-GEG Spokane

25h 35m1 stop Dallas/Fort Worth

$1,016Qantas Airways

Wed, Nov 4 - Wed, Nov 11

3:00 pm - 9:00 amSEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

23h 00m2 stops Phoenix Sky Harbor Intl Los Angeles

11:10 am - 4:54 pmSYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

24h 44m2 stops Los Angeles Dallas/Fort Worth

$1,048American Airlines

Wed, Nov 4 - Wed, Nov 11

2:51 pm - 9:00 amGEG Spokane-SYD Sydney Kingsford Smith

24h 09m1 stop Los Angeles

2:05 pm - 8:40 pmSYD Sydney Kingsford Smith-GEG Spokane

25h 35m1 stop Dallas/Fort Worth

$1,050Qantas Airways

Wed, Oct 28 - Wed, Nov 11

1:13 pm - 9:00 amSEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

24h 47m1 stop Los Angeles

2:05 pm - 4:57 pmSYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

21h 52m1 stop Dallas/Fort Worth

$1,056American Airlines

Sun, Jan 31 - Mon, Feb 15

Cheap last minute flights

Enter your travel dates to find the best prices.

11:10 pm - 8:00 amSEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

39h 50m1 stop Manila Ninoy Aquino Intl

11:15 am - 8:05 pmSYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

26h 50m1 stop Manila Ninoy Aquino Intl

$1,286Philippine Airlines

Wed, Sep 23 - Thu, Oct 8

11:10 pm - 8:00 amSEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

39h 50m1 stop Manila Ninoy Aquino Intl

11:15 am - 10:47 pmSYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

29h 32m2 stops Manila Ninoy Aquino Intl Vancouver Intl

$1,343Multiple Airlines

Sun, Sep 27 - Wed, Oct 7

10:33 am - 7:05 amPDX Portland-SYD Sydney Kingsford Smith

27h 32m1 stop Los Angeles

5:50 pm - 10:06 pmSYD Sydney Kingsford Smith-PDX Portland

21h 16m1 stop Los Angeles

$1,503Qantas Airways

Thu, Sep 24 - Sat, Sep 26

3:00 pm - 7:05 amPDX Portland-SYD Sydney Kingsford Smith

23h 05m2 stops Phoenix Sky Harbor Intl Los Angeles

6:50 pm - 11:12 pmSYD Sydney Kingsford Smith-PDX Portland

22h 22m2 stops Los Angeles Phoenix Sky Harbor Intl

$1,518American Airlines

Sun, Sep 27 - Sun, Oct 4

5:40 pm - 6:50 amSEA Seattle/Tacoma Intl-SYD Sydney Kingsford Smith

20h 10m1 stop Los Angeles

10:15 am - 4:45 pmSYD Sydney Kingsford Smith-SEA Seattle/Tacoma Intl

24h 30m1 stop Los Angeles

$1,643Delta

Sun, Sep 27 - Wed, Oct 7

10:33 am - 7:30 amPDX Portland-SYD Sydney Kingsford Smith

27h 57m1 stop Los Angeles

5:50 pm - 11:55 pmSYD Sydney Kingsford Smith-PDX Portland

23h 05m2 stops Los Angeles Seattle/Tacoma Intl

$1,870Alaska Airlines

Thu, Sep 24 - Sat, Sep 26

4:21 pm - 8:45 amGEG Spokane-SYD Sydney Kingsford Smith

23h 24m2 stops Los Angeles Auckland Intl

7:20 pm - 10:38 pmSYD Sydney Kingsford Smith-GEG Spokane

44h 18m2 stops Auckland Intl Los Angeles

$6,537Air New Zealand

Thu, Sep 24 - Sat, Sep 26

12:45 pm - 6:55 amGEG Spokane-SYD Sydney Kingsford Smith

25h 10m1 stop Dallas/Fort Worth

8:15 pm - 1:13 pmSYD Sydney Kingsford Smith-GEG Spokane

33h 58m2 stops Honolulu Phoenix Sky Harbor Intl

$7,262Qantas Airways

Thu, Sep 24 - Sat, Sep 26

10:56 am - 6:55 amPDX Portland-SYD Sydney Kingsford Smith

26h 59m1 stop San Francisco

11:20 am - 6:31 pmSYD Sydney Kingsford Smith-PDX Portland

25h 11m1 stop San Francisco

$10,773United Airlines

Mon, Sep 28 - Mon, Oct 12

12:45 pm - 7:00 amPDX Portland-SYD Sydney Kingsford Smith

25h 15m2 stops Denver Intl Los Angeles

11:20 am - 6:31 pmSYD Sydney Kingsford Smith-PDX Portland

25h 11m1 stop San Francisco

$10,778United Airlines

Mon, Sep 28 - Mon, Oct 12

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Air Canada flights from State of Washington to Sydney

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

Air Canada

Oct 27

SEA10:10 amSeattle/Tacoma Intl

28h 25m

1 stop

SYD8:35 amSydney Kingsford Smith

Nov 6

SYD11:20 amSydney Kingsford Smith

17h 12m

1 stop

SEA9:32 amSeattle/Tacoma Intl

$877

Air Canada

Oct 18

SEA10:50 amSeattle/Tacoma Intl

27h 30m

1 stop

SYD8:20 amSydney Kingsford Smith

Nov 1

SYD11:20 amSydney Kingsford Smith

26h 02m

1 stop

SEA7:22 pmSeattle/Tacoma Intl

$897

Air Canada

Oct 28

SEA10:10 amSeattle/Tacoma Intl

28h 25m

1 stop

SYD8:35 amSydney Kingsford Smith

Nov 25

SYD11:20 amSydney Kingsford Smith

17h 12m

1 stop

SEA9:32 amSeattle/Tacoma Intl

$900

Qantas Airways flights from State of Washington to Sydney

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

Qantas Airways

Nov 4

GEG5:24 pmSpokane

20h 36m

1 stop

SYD9:00 amSydney Kingsford Smith

Nov 11

SYD2:05 pmSydney Kingsford Smith

25h 35m

1 stop

GEG8:40 pmSpokane

$1,016

Qantas Airways

Oct 28

GEG2:51 pmSpokane

24h 09m

1 stop

SYD9:00 amSydney Kingsford Smith

Nov 10

SYD2:05 pmSydney Kingsford Smith

25h 35m

1 stop

GEG8:40 pmSpokane

$1,050

Qantas Airways

Oct 28

GEG2:51 pmSpokane

24h 09m

1 stop

SYD9:00 amSydney Kingsford Smith

Nov 10

SYD2:05 pmSydney Kingsford Smith

25h 35m

1 stop

GEG8:40 pmSpokane

$1,051

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleSydney

SEA Seattle/Tacoma Intl - SYD Sydney Kingsford Smith

SEASYD

Seattle/Tacoma Intl

Tue 10/27

10:10 am-8:35 am

1 stop28h 25m

Sydney Kingsford Smith

Fri 11/6

11:20 am-9:32 am

1 stop17h 12m

$877

SeattleSydney

SEA Seattle/Tacoma Intl - SYD Sydney Kingsford Smith

SEASYD

Seattle/Tacoma Intl

Sun 10/18

10:50 am-8:20 am

1 stop27h 30m

Sydney Kingsford Smith

Sun 11/1

11:20 am-7:22 pm

1 stop26h 02m

$897

Quickest round-trip

SeattleSydney

SEA Seattle/Tacoma Intl - SYD Sydney Kingsford Smith

SEASYD

Seattle/Tacoma Intl

Mon 3/1

7:00 pm-9:35 am

1 stop19h 35m

Sydney Kingsford Smith

Wed 3/17

6:20 am-9:15 am

2 stops20h 55m

$911

SeattleSydney

SEA Seattle/Tacoma Intl - SYD Sydney Kingsford Smith

SEASYD

Seattle/Tacoma Intl

Mon 10/19

10:50 am-8:20 am

1 stop27h 30m

Sydney Kingsford Smith

Sun 11/1

6:20 am-10:32 am

2 stops22h 12m

$923

SeattleSydney

SEA Seattle/Tacoma Intl - SYD Sydney Kingsford Smith

SEASYD

Seattle/Tacoma Intl

Tue 2/2

8:40 am-9:35 am

1 stop29h 55m

Sydney Kingsford Smith

Sun 2/28

11:20 am-9:32 am

1 stop17h 12m

$991

SeattleSydney

SEA Seattle/Tacoma Intl - SYD Sydney Kingsford Smith

SEASYD

Seattle/Tacoma Intl

Tue 2/2

8:40 am-9:35 am

1 stop29h 55m

Sydney Kingsford Smith

Tue 3/2

11:20 am-9:30 am

1 stop17h 10m

$991

SpokaneSydney

GEG Spokane - SYD Sydney Kingsford Smith

GEGSYD

Spokane

Wed 11/4

5:24 pm-9:00 am

1 stop20h 36m

Sydney Kingsford Smith

Wed 11/11

2:05 pm-8:40 pm

1 stop25h 35m

$1,016

SeattleSydney

SEA Seattle/Tacoma Intl - SYD Sydney Kingsford Smith

SEASYD

Seattle/Tacoma Intl

Wed 11/4

3:00 pm-9:00 am

2 stops23h 00m

Sydney Kingsford Smith

Wed 11/11

11:10 am-4:54 pm

2 stops24h 44m

$1,048

SpokaneSydney

GEG Spokane - SYD Sydney Kingsford Smith

GEGSYD

Spokane

Wed 10/28

2:51 pm-9:00 am

1 stop24h 09m

Sydney Kingsford Smith

Wed 11/11

2:05 pm-8:40 pm

1 stop25h 35m

$1,050

SeattleSydney

SEA Seattle/Tacoma Intl - SYD Sydney Kingsford Smith

SEASYD

Seattle/Tacoma Intl

Sun 1/31

1:13 pm-9:00 am

1 stop24h 47m

Sydney Kingsford Smith

Mon 2/15

2:05 pm-4:57 pm

1 stop21h 52m

$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 $804. If you are unable to visit Sydney during the month of August, then departing from State of Washington during the month September is also very affordable. Most momondo users find prices during this month for around $1,041.

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 $1,158 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 $1,010 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	$489
Fastest flight time	18h 30m
Direct flights	None

The best one-way flight to Sydney from State of Washington in the past 72 hours is $489. The best round-trip flight deal from State of Washington to Sydney found on momondo in the last 72 hours is $877.

The fastest flight from State of Washington to Sydney takes 18h 30m

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 updated daily.
How many operators does momondo search for flights from Washington to Sydney Kingsford Smith Airport?
As of September 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 1,318 reviews	Search ANA flights
United Airlines	PriceFrom $598	Free Cancellation	Rating 7.4 10,222 reviews	Search United Airlines flights
Qantas Airways	PriceFrom $805	Free Cancellation	Rating 7.5 1,101 reviews	Search Qantas Airways flights
Hawaiian Airlines	PriceFrom $822	Free Cancellation	Rating 7.8 2,811 reviews	Search Hawaiian Airlines flights
Delta	PriceFrom $845	Free Cancellation	Rating 7.8 8,597 reviews	Search Delta flights
Alaska Airlines	PriceFrom $845	Free Cancellation	Rating 7.9 12,953 reviews	Search Alaska Airlines flights
Air Canada	PriceFrom $901	Free Cancellation	Rating 7.1 11,661 reviews	Search Air Canada flights
Air New Zealand	PriceFrom $947	Free Cancellation	Rating 8.0 669 reviews	Search Air New Zealand flights
American Airlines	PriceFrom $975	Free Cancellation	Rating 7.0 12,082 reviews	Search American Airlines 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.

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Cheap flights from Washington to Sydney from $489

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 3/21. 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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Air Canada flights from State of Washington to Sydney

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

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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

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.

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