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Cheap flights from Washington to Sydney from $581

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 1/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

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Cheap return flights

Philippine Airlines Logo
21:30 - 09:50SEA-SYD
41h 20m1 stop
Philippine Airlines Logo
11:35 - 19:40SYD-SEA
26h 05m1 stop
$1,259Philippine Airlines
Find Deal
Fri, 27 Feb - Wed, 11 Mar
Philippine Airlines Logo
21:30 - 09:50SEA-SYD
41h 20m1 stop
Philippine Airlines Logo
11:35 - 18:40SYD-SEA
26h 05m1 stop
$1,291Philippine Airlines
Find Deal
Fri, 20 Feb - Wed, 25 Feb
Multiple Airlines Logo
21:32 - 06:10SEA-SYD
37h 38m1 stop
Multiple Airlines Logo
17:45 - 20:23SYD-SEA
21h 38m1 stop
$1,324Multiple Airlines
Find Deal
Mon, 10 Nov - Sun, 23 Nov
Hawaiian Airlines Logo
07:00 - 19:45SEA-SYD
17h 45m1 stop
Hawaiian Airlines Logo
21:40 - 20:49SYD-SEA
18h 09m1 stop
$1,330Hawaiian Airlines
Find Deal
Fri, 14 Nov - Fri, 21 Nov
United Airlines Logo
12:45 - 09:15GEG-SYD
25h 30m1 stop
United Airlines Logo
12:10 - 10:42SYD-GEG
17h 32m1 stop
$1,335United Airlines
Find Deal
Fri, 14 Nov - Fri, 21 Nov
Alaska Airlines Logo
07:00 - 19:45SEA-SYD
17h 45m1 stop
Alaska Airlines Logo
21:40 - 21:02SYD-SEA
18h 22m1 stop
$1,335Alaska Airlines
Find Deal
Sat, 24 Jan - Sat, 31 Jan
United Airlines Logo
12:45 - 09:15GEG-SYD
25h 30m1 stop
United Airlines Logo
12:10 - 10:42SYD-GEG
17h 32m1 stop
$1,336United Airlines
Find Deal
Thu, 13 Nov - Thu, 20 Nov
Alaska Airlines Logo
07:00 - 19:45SEA-SYD
17h 45m1 stop
Alaska Airlines Logo
21:40 - 20:51SYD-SEA
18h 11m1 stop
$1,342Alaska Airlines
Find Deal
Mon, 10 Nov - Wed, 14 Jan
Hawaiian Airlines Logo
07:00 - 19:45SEA-SYD
17h 45m1 stop
Hawaiian Airlines Logo
21:40 - 23:21SYD-SEA
20h 41m1 stop
$1,359Hawaiian Airlines
Find Deal
Wed, 12 Nov - Tue, 18 Nov
Multiple Airlines Logo
21:30 - 09:50SEA-SYD
41h 20m1 stop
Multiple Airlines Logo
14:00 - 14:37SYD-SEA
43h 37m2 stops
$1,437Multiple Airlines
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Sun, 9 Nov - Wed, 19 Nov

Air Canada flights from State of Washington to Sydney

Our best Air Canada deals on State of Washington to Sydney flight tickets
Air Canada
2 Mar
PDX09:50Portland
28h 45m
1 stop
SYD09:35Sydney Kingsford Smith
13 Apr
SYD09:20Sydney Kingsford Smith
16h 55m
1 stop
PDX09:15Portland
$1,691
Find similar
Air Canada
11 Feb
PDX19:00Portland
19h 35m
1 stop
SYD09:35Sydney Kingsford Smith
18 Feb
SYD11:20Sydney Kingsford Smith
22h 25m
1 stop
PDX14:45Portland
$1,703
Find similar
Air Canada
17 Mar
PDX15:15Portland
23h 20m
1 stop
SYD08:35Sydney Kingsford Smith
24 Mar
SYD10:20Sydney Kingsford Smith
16h 55m
1 stop
PDX09:15Portland
$1,747
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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
27 Feb
SEA21:30Seattle/Tacoma Intl
41h 20m
1 stop
SYD09:50Sydney Kingsford Smith
11 Mar
SYD11:35Sydney Kingsford Smith
26h 05m
1 stop
SEA19:40Seattle/Tacoma Intl
$1,259
Find similar
Philippine Airlines
20 Feb
SEA21:30Seattle/Tacoma Intl
41h 20m
1 stop
SYD09:50Sydney Kingsford Smith
25 Feb
SYD11:35Sydney Kingsford Smith
26h 05m
1 stop
SEA18:40Seattle/Tacoma Intl
$1,291
Find similar
Philippine Airlines
27 Feb
SEA21:30Seattle/Tacoma Intl
41h 20m
1 stop
SYD09:50Sydney Kingsford Smith
13 Mar
SYD11:35Sydney Kingsford Smith
26h 05m
1 stop
SEA19:40Seattle/Tacoma Intl
$1,303
Find similar

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 30 September 2025.
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

Fri 27/2

21:30-09:50

1 stop41h 20m

Sydney Kingsford Smith

Wed 11/3

11:35-19:40

1 stop26h 05m

$1,259

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Fri 20/2

21:30-09:50

1 stop41h 20m

Sydney Kingsford Smith

Wed 25/2

11:35-18:40

1 stop26h 05m

$1,291

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 10/11

21:32-06:10

1 stop37h 38m

Sydney Kingsford Smith

Sun 23/11

17:45-20:23

1 stop21h 38m

$1,324

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Fri 14/11

07:00-19:45

1 stop17h 45m

Sydney Kingsford Smith

Fri 21/11

21:40-20:49

1 stop18h 09m

$1,330

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Fri 14/11

12:45-09:15

1 stop25h 30m

Sydney Kingsford Smith

Fri 21/11

12:10-10:42

1 stop17h 32m

$1,335

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sat 24/1

07:00-19:45

1 stop17h 45m

Sydney Kingsford Smith

Sat 31/1

21:40-21:02

1 stop18h 22m

$1,335

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Thu 13/11

12:45-09:15

1 stop25h 30m

Sydney Kingsford Smith

Thu 20/11

12:10-10:42

1 stop17h 32m

$1,336

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 10/11

07:00-19:45

1 stop17h 45m

Sydney Kingsford Smith

Wed 14/1

21:40-20:51

1 stop18h 11m

$1,342

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Wed 12/11

07:00-19:45

1 stop17h 45m

Sydney Kingsford Smith

Tue 18/11

21:40-23:21

1 stop20h 41m

$1,359

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 9/11

21:30-09:50

1 stop41h 20m

Sydney Kingsford Smith

Wed 19/11

14:00-14:37

2 stops43h 37m

$1,437

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 September is, on average, the cheapest month to fly to Sydney from State of Washington, with most prices found around $1,393. If you aren’t able to travel to Sydney during the month of September, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $1,466.

What is the cheapest day to depart on your flight to Sydney?

Our data shows that Monday is the least expensive day to fly to Sydney. Tickets to fly out on this day can be as low as $1,472. The most expensive day to fly to Sydney is Saturday, with ticket prices averaging around $1,778.

What is the cheapest time of day to depart on your flight to Sydney?

According to our data, the cheapest time of day to fly to Sydney is in the afternoon. momondo users have found flights departing from State of Washington to Sydney in the afternoon for as low as $1,405. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $1,725 on average. Flights to Sydney from State of Washington in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

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 $1,657 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 $1,384 on momondo.

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

You could potentially save up to 2% 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

Direct flights

None
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 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 $1,216Free cancellationRating
7.4
8,931 reviews
Search United Airlines flights
Air CanadaPriceFrom $1,279Free cancellationRating
7.1
10,000 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
Bondi Beach
Coogee
Randwick
Cronulla
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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