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Cheap flights from Sydney to Seattle from $458

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Sydney to Seattle departing on 3/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
2:00 pm - 11:40 pm
SYD
-
SEA
27h 40m
2 stops
Multiple Airlines Logo
5:59 pm - 12:45 pm
SEA
-
SYD
24h 46m
2 stops
$901Multiple Airlines
Fri, Mar 20 - Fri, Mar 27
Multiple Airlines Logo
2:00 pm - 6:51 pm
SYD
-
SEA
22h 51m
2 stops
Multiple Airlines Logo
10:42 am - 7:30 am
SEA
-
SYD
27h 48m
1 stop
$919Multiple Airlines
Wed, Mar 18 - Fri, Apr 17
American Airlines Logo
11:20 am - 5:52 pm
SYD
-
SEA
24h 32m
2 stops
American Airlines Logo
3:00 pm - 9:00 am
SEA
-
SYD
24h 00m
2 stops
$929American Airlines
Tue, Mar 10 - Sun, Mar 22
American Airlines Logo
11:20 am - 10:48 pm
SYD
-
SEA
30h 28m
1 stop
American Airlines Logo
3:00 pm - 9:00 am
SEA
-
SYD
24h 00m
2 stops
$931American Airlines
Mon, Mar 2 - Tue, Mar 17
Multiple Airlines Logo
1:15 pm - 6:40 pm
SYD
-
SEA
22h 25m
2 stops
Multiple Airlines Logo
10:42 am - 7:30 am
SEA
-
SYD
27h 48m
1 stop
$939Multiple Airlines
Thu, Apr 23 - Fri, May 1
American Airlines Logo
11:20 am - 5:43 pm
SYD
-
SEA
25h 23m
2 stops
American Airlines Logo
7:24 pm - 12:30 pm
SEA
-
SYD
23h 06m
2 stops
$953American Airlines
Mon, Mar 2 - Tue, Mar 17
Multiple Airlines Logo
1:10 pm - 10:18 pm
SYD
-
SEA
26h 08m
2 stops
Multiple Airlines Logo
10:42 am - 7:30 am
SEA
-
SYD
27h 48m
1 stop
$960Multiple Airlines
Wed, Apr 22 - Tue, Apr 28
Multiple Airlines Logo
1:15 pm - 6:05 pm
SYD
-
SEA
21h 50m
2 stops
Multiple Airlines Logo
6:58 pm - 11:50 am
SEA
-
SYD
23h 52m
2 stops
$962Multiple Airlines
Wed, Jun 17 - Tue, Aug 11
Multiple Airlines Logo
1:15 pm - 6:40 pm
SYD
-
SEA
22h 25m
2 stops
Multiple Airlines Logo
6:49 pm - 11:50 am
SEA
-
SYD
24h 01m
2 stops
$965Multiple Airlines
Mon, May 11 - Tue, May 26
Multiple Airlines Logo
1:15 pm - 11:29 pm
SYD
-
SEA
27h 14m
2 stops
Multiple Airlines Logo
10:42 am - 7:30 am
SEA
-
SYD
27h 48m
1 stop
$966Multiple Airlines
Fri, Apr 24 - Tue, Apr 28

American Airlines flights from Sydney to Seattle

Our best American Airlines deals on Sydney to Seattle flight tickets
American Airlines
Mar 10
SYD11:20 amSydney Kingsford Smith
24h 32m
2 stops
SEA5:52 pmSeattle/Tacoma Intl
Mar 22
SEA3:00 pmSeattle/Tacoma Intl
24h 00m
2 stops
SYD9:00 amSydney Kingsford Smith
$929
American Airlines
Mar 2
SYD11:20 amSydney Kingsford Smith
30h 28m
1 stop
SEA10:48 pmSeattle/Tacoma Intl
Mar 17
SEA3:00 pmSeattle/Tacoma Intl
24h 00m
2 stops
SYD9:00 amSydney Kingsford Smith
$931
American Airlines
Mar 2
SYD11:20 amSydney Kingsford Smith
25h 23m
2 stops
SEA5:43 pmSeattle/Tacoma Intl
Mar 17
SEA7:24 pmSeattle/Tacoma Intl
23h 06m
2 stops
SYD12:30 pmSydney Kingsford Smith
$953

Qantas Airways flights from Sydney to Seattle

Our best Qantas Airways deals on Sydney to Seattle flight tickets
Qantas Airways
Mar 1
SYD2:55 pmSydney Kingsford Smith
23h 02m
2 stops
SEA6:57 pmSeattle/Tacoma Intl
Mar 16
SEA7:05 pmSeattle/Tacoma Intl
19h 55m
1 stop
SYD9:00 amSydney Kingsford Smith
$982
Qantas Airways
Mar 1
SYD11:20 amSydney Kingsford Smith
26h 37m
1 stop
SEA6:57 pmSeattle/Tacoma Intl
Mar 16
SEA7:05 pmSeattle/Tacoma Intl
19h 55m
1 stop
SYD9:00 amSydney Kingsford Smith
$1,007

momondo Fare Finder

 
Customize your flight search to find flights from Sydney to Seattle 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 832,500 searches. Data last updated February 3, 2026.
Use the filters below to find and compare flights from Sydney to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Fri 3/20

2:00 pm-11:40 pm

2 stops27h 40m

Seattle/Tacoma Intl

Fri 3/27

5:59 pm-12:45 pm

2 stops24h 46m

$901

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 3/18

2:00 pm-6:51 pm

2 stops22h 51m

Seattle/Tacoma Intl

Fri 4/17

10:42 am-7:30 am

1 stop27h 48m

$919

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Tue 3/10

11:20 am-5:52 pm

2 stops24h 32m

Seattle/Tacoma Intl

Sun 3/22

3:00 pm-9:00 am

2 stops24h 00m

$929

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Mon 3/2

11:20 am-10:48 pm

1 stop30h 28m

Seattle/Tacoma Intl

Tue 3/17

3:00 pm-9:00 am

2 stops24h 00m

$931

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Thu 4/23

1:15 pm-6:40 pm

2 stops22h 25m

Seattle/Tacoma Intl

Fri 5/1

10:42 am-7:30 am

1 stop27h 48m

$939

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Mon 3/2

11:20 am-5:43 pm

2 stops25h 23m

Seattle/Tacoma Intl

Tue 3/17

7:24 pm-12:30 pm

2 stops23h 06m

$953

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 4/22

1:10 pm-10:18 pm

2 stops26h 08m

Seattle/Tacoma Intl

Tue 4/28

10:42 am-7:30 am

1 stop27h 48m

$960

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 6/17

1:15 pm-6:05 pm

2 stops21h 50m

Seattle/Tacoma Intl

Tue 8/11

6:58 pm-11:50 am

2 stops23h 52m

$962

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Mon 5/11

1:15 pm-6:40 pm

2 stops22h 25m

Seattle/Tacoma Intl

Tue 5/26

6:49 pm-11:50 am

2 stops24h 01m

$965

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Fri 4/24

1:15 pm-11:29 pm

2 stops27h 14m

Seattle/Tacoma Intl

Tue 4/28

10:42 am-7:30 am

1 stop27h 48m

$966

Flights are sorted by cheapest round-trip flights first.

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

How to get the cheapest flight ticket from Sydney to Seattle

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 Seattle?

In general, August is the cheapest month to fly from Sydney to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $904. If you don’t want to visit Seattle in August, then you should wait until September to fly from Sydney, when ticket prices are also cheap, with an average price of $948.

How far in advance should I book a flight to Seattle?

You are more likely to see cheaper flights to Seattle from Sydney when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $1,078 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Sydney for as low as $909 on momondo.

Can stopping save me money on Sydney to Seattle flights?

You could potentially save up to 13% on your flight if you consider stops on a Sydney to Seattle flight.

How have Sydney to Seattle flight prices changed over time?

As of February 2026, prices for Sydney to Seattle flights are approximately 14% more expensive when compared to flights at the same time last year.

When to book flights from Sydney to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Sydney to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Sydney to Seattle (SYD to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Sydney to Seattle

Fastest flight time

19h 05m

Direct flights

None
The fastest flight from Sydney to Seattle takes 19h 05m
There are no direct flights from Sydney to Seattle. There are no popular flight routes from Sydney to Seattle.
Search flight deals

  • How far is Sydney Kingsford Smith to Seattle/Tacoma Intl by plane?

    Seattle/Tacoma Intl is 7743.7 mi away from Sydney Kingsford Smith. Flights usually cover this in 19h 05m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Sydney Kingsford Smith Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from Sydney Kingsford Smith Airport to Seattle/Tacoma Intl Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Sydney Kingsford Smith Airport to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from Sydney Kingsford Smith Airport to Seattle/Tacoma Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Sydney Kingsford Smith Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The travel and health documents required for your trip to Seattle/Tacoma Intl 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 Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Sydney to Seattle?

Best airlines flying from Sydney to Seattle

Compare and see reviews for airlines that fly from Sydney to Seattle with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $598Free CancellationRating
7.1
10,676 reviews
Search Air Canada flights
United AirlinesPriceFrom $794Free CancellationRating
7.4
9,231 reviews
Search United Airlines flights
DeltaPriceFrom $802Free CancellationRating
7.9
8,132 reviews
Search Delta flights

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
SeaTac
Ocean Shores
Renton
Olympia
Lynnwood
Kent
Marysville
Redmond
Puyallup
Cle Elum
Tukwila
Lakewood
Federal Way
Westport
Kirkland
Centralia
Fife
Tumwater

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Sydney to Seattle for you.

Can I find flights from Sydney to Seattle with flexible booking policies on momondo?

Yes. All flights to Seattle from Sydney on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Sydney to Seattle?

momondo helps you find the best flight between Sydney and Seattle by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Sydney to Seattle right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Seattle from Sydney. 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.

An easier way to manage your Seattle trip

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