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Cheap flights from Sydney to Seattle from $548

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 8/27. 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
1 adult, Economy, 0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
1:15 pm - 6:40 pm
SYD
-
SEA
22h 25m
2 stops
Multiple Airlines Logo
5:06 pm - 11:50 am
SEA
-
SYD
25h 44m
2 stops
$861Multiple Airlines
Tue, May 5 - Tue, May 12
Multiple Airlines Logo
1:15 pm - 6:51 pm
SYD
-
SEA
22h 36m
2 stops
Multiple Airlines Logo
5:58 pm - 11:50 am
SEA
-
SYD
24h 52m
2 stops
$900Multiple Airlines
Tue, Apr 21 - Wed, Apr 22
Multiple Airlines Logo
8:45 pm - 5:59 am
SYD
-
SEA
26h 14m
1 stop
Multiple Airlines Logo
9:09 pm - 6:50 pm
SEA
-
SYD
28h 41m
1 stop
$904Multiple Airlines
Sun, Jul 12 - Tue, Jul 28
Multiple Airlines Logo
1:20 pm - 6:40 pm
SYD
-
SEA
22h 20m
2 stops
Multiple Airlines Logo
6:00 am - 11:50 am
SEA
-
SYD
36h 50m
2 stops
$906Multiple Airlines
Wed, May 6 - Wed, May 13
Multiple Airlines Logo
8:45 pm - 5:59 am
SYD
-
SEA
26h 14m
1 stop
Multiple Airlines Logo
9:09 pm - 6:50 pm
SEA
-
SYD
28h 41m
1 stop
$907Multiple Airlines
Sun, Jul 12 - Tue, Jul 28
Multiple Airlines Logo
8:45 pm - 11:59 pm
SYD
-
SEA
20h 14m
1 stop
Multiple Airlines Logo
9:09 pm - 6:50 pm
SEA
-
SYD
28h 41m
1 stop
$909Multiple Airlines
Sun, Jul 12 - Tue, Jul 28
Multiple Airlines Logo
8:45 pm - 11:59 pm
SYD
-
SEA
20h 14m
1 stop
Multiple Airlines Logo
9:09 pm - 6:50 pm
SEA
-
SYD
28h 41m
1 stop
$911Multiple Airlines
Sun, Jul 12 - Tue, Jul 28
Multiple Airlines Logo
1:15 pm - 6:40 pm
SYD
-
SEA
22h 25m
2 stops
Multiple Airlines Logo
1:00 pm - 12:05 pm
SEA
-
SYD
30h 05m
2 stops
$925Multiple Airlines
Mon, May 4 - Mon, May 11
Air Canada Logo
9:20 am - 10:05 am
SYD
-
SEA
17h 45m
1 stop
Air Canada Logo
5:50 am - 7:20 am
SEA
-
SYD
32h 30m
1 stop
$930Air Canada
Thu, May 14 - Mon, May 25
Air Canada Logo
9:20 am - 9:38 am
SYD
-
SEA
17h 18m
1 stop
Air Canada Logo
3:40 pm - 7:20 am
SEA
-
SYD
22h 40m
1 stop
$934Air Canada
Tue, Apr 21 - Wed, Apr 22

American Airlines flights from Sydney to Seattle

Our best American Airlines deals on Sydney to Seattle flight tickets
American Airlines
Jun 2
SYD9:10 amSydney Kingsford Smith
21h 47m
1 stop
SEA1:57 pmSeattle/Tacoma Intl
Jun 17
SEA6:50 amSeattle/Tacoma Intl
31h 15m
1 stop
SYD7:05 amSydney Kingsford Smith
$980
American Airlines
Jun 3
SYD9:10 amSydney Kingsford Smith
29h 39m
1 stop
SEA9:49 pmSeattle/Tacoma Intl
Jun 28
SEA2:40 pmSeattle/Tacoma Intl
23h 50m
1 stop
SYD7:30 amSydney Kingsford Smith
$985
American Airlines
Jun 2
SYD9:10 amSydney Kingsford Smith
25h 34m
2 stops
SEA5:44 pmSeattle/Tacoma Intl
Jun 17
SEA3:20 pmSeattle/Tacoma Intl
22h 45m
2 stops
SYD7:05 amSydney Kingsford Smith
$986

Air Canada flights from Sydney to Seattle

Our best Air Canada deals on Sydney to Seattle flight tickets
Air Canada
May 14
SYD9:20 amSydney Kingsford Smith
17h 45m
1 stop
SEA10:05 amSeattle/Tacoma Intl
May 25
SEA5:50 amSeattle/Tacoma Intl
32h 30m
1 stop
SYD7:20 amSydney Kingsford Smith
$930
Air Canada
Apr 21
SYD9:20 amSydney Kingsford Smith
17h 18m
1 stop
SEA9:38 amSeattle/Tacoma Intl
Apr 22
SEA3:40 pmSeattle/Tacoma Intl
22h 40m
1 stop
SYD7:20 amSydney Kingsford Smith
$934
Air Canada
May 14
SYD9:20 amSydney Kingsford Smith
17h 45m
1 stop
SEA10:05 amSeattle/Tacoma Intl
May 26
SEA7:20 pmSeattle/Tacoma Intl
19h 00m
1 stop
SYD7:20 amSydney Kingsford Smith
$935

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 March 22, 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

Cheapest round-trip

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Tue 5/5

1:15 pm-6:40 pm

2 stops22h 25m

Seattle/Tacoma Intl

Tue 5/12

5:06 pm-11:50 am

2 stops25h 44m

$861

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Tue 4/21

1:15 pm-6:51 pm

2 stops22h 36m

Seattle/Tacoma Intl

Wed 4/22

5:58 pm-11:50 am

2 stops24h 52m

$900

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Sun 7/12

8:45 pm-5:59 am

1 stop26h 14m

Seattle/Tacoma Intl

Tue 7/28

9:09 pm-6:50 pm

1 stop28h 41m

$904

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 5/6

1:20 pm-6:40 pm

2 stops22h 20m

Seattle/Tacoma Intl

Wed 5/13

6:00 am-11:50 am

2 stops36h 50m

$906

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Sun 7/12

8:45 pm-5:59 am

1 stop26h 14m

Seattle/Tacoma Intl

Tue 7/28

9:09 pm-6:50 pm

1 stop28h 41m

$907

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Sun 7/12

8:45 pm-11:59 pm

1 stop20h 14m

Seattle/Tacoma Intl

Tue 7/28

9:09 pm-6:50 pm

1 stop28h 41m

$909

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Sun 7/12

8:45 pm-11:59 pm

1 stop20h 14m

Seattle/Tacoma Intl

Tue 7/28

9:09 pm-6:50 pm

1 stop28h 41m

$911

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Mon 5/4

1:15 pm-6:40 pm

2 stops22h 25m

Seattle/Tacoma Intl

Mon 5/11

1:00 pm-12:05 pm

2 stops30h 05m

$925

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Thu 5/14

9:20 am-10:05 am

1 stop17h 45m

Seattle/Tacoma Intl

Mon 5/25

5:50 am-7:20 am

1 stop32h 30m

$930
Quickest round-trip

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Tue 4/21

9:20 am-9:38 am

1 stop17h 18m

Seattle/Tacoma Intl

Wed 4/22

3:40 pm-7:20 am

1 stop22h 40m

$934

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 $895. 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 $922.

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 $1,059 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 $884 on momondo.

Can stopping save me money on Sydney to Seattle flights?

You could potentially save up to 9% 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 March 2026, prices for Sydney to Seattle flights are approximately 21% cheaper 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 14m

Direct flights

None
The fastest flight from Sydney to Seattle takes 19h 14m
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 14m, 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
10,831 reviews
Search Air Canada flights
United AirlinesPriceFrom $794Free CancellationRating
7.4
9,458 reviews
Search United Airlines flights
DeltaPriceFrom $802Free CancellationRating
7.9
8,315 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
Redmond
Marysville
Puyallup
Cle Elum
Lakewood
Tukwila
Federal Way
Fife
Westport
Centralia
Kirkland
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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