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Cheap flights from Washington to Sydney from $593

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 26/4. 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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Cheap return flights

Enter your travel dates to find the best prices.
ANA Logo
16:30 - 19:15
SEA
-
SYD
33h 45m
1 stop
ANA Logo
11:50 - 18:30
SYD
-
SEA
23h 40m
2 stops
$1,138ANA
Wed, 6 May - Wed, 27 May
ANA Logo
16:30 - 19:15
SEA
-
SYD
33h 45m
1 stop
ANA Logo
20:55 - 14:25
SYD
-
SEA
34h 30m
1 stop
$1,147ANA
Mon, 25 May - Sun, 31 May
Multiple Airlines Logo
09:18 - 07:25
SEA
-
SYD
27h 07m
1 stop
Multiple Airlines Logo
14:00 - 10:54
SYD
-
SEA
39h 54m
2 stops
$1,294Multiple Airlines
Fri, 20 Feb - Sun, 1 Mar
Multiple Airlines Logo
09:28 - 09:10
SEA
-
SYD
52h 42m
2 stops
Multiple Airlines Logo
11:20 - 17:09
SYD
-
SEA
23h 49m
1 stop
$1,315Multiple Airlines
Mon, 2 Mar - Mon, 9 Mar
Qantas Airways Logo
15:45 - 06:10
GEG
-
SYD
19h 25m
1 stop
Qantas Airways Logo
13:05 - 16:54
SYD
-
GEG
21h 49m
1 stop
$1,388Qantas Airways
Tue, 3 Mar - Tue, 10 Mar
Qantas Airways Logo
13:07 - 06:55
GEG
-
SYD
24h 48m
1 stop
Qantas Airways Logo
12:00 - 20:47
SYD
-
GEG
25h 47m
1 stop
$1,391Qantas Airways
Wed, 3 Jun - Sun, 14 Jun
American Airlines Logo
06:00 - 06:55
GEG
-
SYD
29h 55m
1 stop
American Airlines Logo
13:05 - 16:54
SYD
-
GEG
21h 49m
1 stop
$1,392American Airlines
Tue, 3 Mar - Tue, 10 Mar
American Airlines Logo
15:10 - 09:00
GEG
-
SYD
23h 50m
2 stops
American Airlines Logo
13:05 - 21:12
SYD
-
GEG
26h 07m
1 stop
$1,397American Airlines
Mon, 16 Mar - Mon, 23 Mar
Delta Logo
13:20 - 06:50
GEG
-
SYD
22h 30m
2 stops
Delta Logo
09:40 - 18:20
SYD
-
GEG
26h 40m
2 stops
$1,420Delta
Tue, 3 Mar - Tue, 10 Mar
Delta Logo
05:00 - 06:50
GEG
-
SYD
30h 50m
2 stops
Delta Logo
13:15 - 16:08
SYD
-
GEG
20h 53m
2 stops
$1,421Delta
Tue, 3 Mar - Tue, 10 Mar

Alaska Airlines flights from State of Washington to Sydney

Our best Alaska Airlines deals on State of Washington to Sydney flight tickets
Alaska Airlines
4 Feb
SEA07:00Seattle/Tacoma Intl
17h 45m
1 stop
SYD19:45Sydney Kingsford Smith
7 Feb
SYD21:40Sydney Kingsford Smith
18h 22m
1 stop
SEA21:02Seattle/Tacoma Intl
$1,643
Alaska Airlines
6 July
PDX07:41Portland
18h 09m
1 stop
SYD18:50Sydney Kingsford Smith
26 July
SYD20:45Sydney Kingsford Smith
26h 26m
1 stop
PDX06:11Portland
$1,644
Alaska Airlines
6 July
PDX07:41Portland
18h 09m
1 stop
SYD18:50Sydney Kingsford Smith
26 July
SYD20:45Sydney Kingsford Smith
26h 26m
1 stop
PDX06:11Portland
$1,645

United Airlines flights from State of Washington to Sydney

Our best United Airlines deals on State of Washington to Sydney flight tickets
United Airlines
2 Feb
PDX19:52Portland
18h 23m
1 stop
SYD09:15Sydney Kingsford Smith
4 Feb
SYD11:45Sydney Kingsford Smith
46h 01m
2 stops
PDX14:46Portland
$1,598
United Airlines
8 Feb
SEA17:12Seattle/Tacoma Intl
20h 53m
1 stop
SYD09:05Sydney Kingsford Smith
22 Feb
SYD14:00Sydney Kingsford Smith
23h 26m
1 stop
SEA18:26Seattle/Tacoma Intl
$1,687
United Airlines
11 Feb
SEA07:00Seattle/Tacoma Intl
29h 00m
1 stop
SYD07:00Sydney Kingsford Smith
24 Feb
SYD11:50Sydney Kingsford Smith
25h 13m
2 stops
SEA18:03Seattle/Tacoma Intl
$1,688

momondo Fare Finder

 
Customise your flight search to find flights from State of Washington to Sydney that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 78,305 searches. Data last updated 31 January 2026.
Use the filters below to find and compare flights from Washington to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Wed 6/5

16:30-19:15

1 stop33h 45m

Sydney Kingsford Smith

Wed 27/5

11:50-18:30

2 stops23h 40m

$1,138

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 25/5

16:30-19:15

1 stop33h 45m

Sydney Kingsford Smith

Sun 31/5

20:55-14:25

1 stop34h 30m

$1,147

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Fri 20/2

09:18-07:25

1 stop27h 07m

Sydney Kingsford Smith

Sun 1/3

14:00-10:54

2 stops39h 54m

$1,294

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 2/3

09:28-09:10

2 stops52h 42m

Sydney Kingsford Smith

Mon 9/3

11:20-17:09

1 stop23h 49m

$1,315

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Tue 3/3

15:45-06:10

1 stop19h 25m

Sydney Kingsford Smith

Tue 10/3

13:05-16:54

1 stop21h 49m

$1,388

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Wed 3/6

13:07-06:55

1 stop24h 48m

Sydney Kingsford Smith

Sun 14/6

12:00-20:47

1 stop25h 47m

$1,391

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Tue 3/3

06:00-06:55

1 stop29h 55m

Sydney Kingsford Smith

Tue 10/3

13:05-16:54

1 stop21h 49m

$1,392

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Mon 16/3

15:10-09:00

2 stops23h 50m

Sydney Kingsford Smith

Mon 23/3

13:05-21:12

1 stop26h 07m

$1,397

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Tue 3/3

13:20-06:50

2 stops22h 30m

Sydney Kingsford Smith

Tue 10/3

09:40-18:20

2 stops26h 40m

$1,420

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Tue 3/3

05:00-06:50

2 stops30h 50m

Sydney Kingsford Smith

Tue 10/3

13:15-16:08

2 stops20h 53m

$1,421

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Sydney from

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?

The month of August is, on average, the cheapest month to fly to Sydney from State of Washington, with most prices found around $1,209. If you aren’t able to travel to Sydney during the month of August, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $1,229.

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 $1,510 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 $1,252 on momondo.

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

You could potentially save up to 38% 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.
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 refreshed on a daily basis.

  • 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?

    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.

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
United AirlinesPriceFrom $1,142Free cancellationRating
7.4
9,219 reviews
Search United Airlines flights
Air CanadaPriceFrom $1,203Free cancellationRating
7.1
10,668 reviews
Search Air Canada flights

Travelling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Terrigal
Penrith
Katoomba
Lithgow
Leura
Manly
Coogee
Bondi Beach
Cronulla
Randwick
Charlestown
Newport
Swansea

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.

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