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Cheap flights from Sydney to Seattle from $573

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 10/20. 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

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Sydney to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
9:10 am - 1:48 pm
SYD
-
SEA
21h 38m
1 stop
American Airlines Logo
2:20 pm - 7:05 am
SEA
-
SYD
23h 45m
1 stop
$964American Airlines
Tue, Jul 21 - Tue, Aug 4
American Airlines Logo
9:10 am - 1:48 pm
SYD
-
SEA
21h 38m
1 stop
American Airlines Logo
2:20 pm - 7:05 am
SEA
-
SYD
23h 45m
1 stop
$965American Airlines
Mon, Jul 20 - Tue, Aug 4
American Airlines Logo
9:10 am - 1:57 pm
SYD
-
SEA
21h 47m
1 stop
American Airlines Logo
2:40 pm - 7:05 am
SEA
-
SYD
23h 25m
1 stop
$967American Airlines
Thu, May 21 - Mon, Jun 1
American Airlines Logo
9:10 am - 1:57 pm
SYD
-
SEA
21h 47m
1 stop
American Airlines Logo
2:40 pm - 7:05 am
SEA
-
SYD
23h 25m
1 stop
$968American Airlines
Wed, Jun 3 - Wed, Jun 10
American Airlines Logo
9:10 am - 1:57 pm
SYD
-
SEA
21h 47m
1 stop
American Airlines Logo
3:20 pm - 7:05 am
SEA
-
SYD
22h 45m
2 stops
$971American Airlines
Thu, May 21 - Mon, Jun 1
American Airlines Logo
9:10 am - 1:57 pm
SYD
-
SEA
21h 47m
1 stop
American Airlines Logo
3:20 pm - 7:05 am
SEA
-
SYD
22h 45m
2 stops
$973American Airlines
Wed, Jun 3 - Wed, Jun 10
Multiple Airlines Logo
9:10 am - 12:01 pm
SYD
-
SEA
19h 51m
1 stop
Multiple Airlines Logo
3:59 pm - 7:05 am
SEA
-
SYD
22h 06m
1 stop
$974Multiple Airlines
Tue, Jun 9 - Tue, Jun 23
Delta Logo
9:15 am - 4:42 pm
SYD
-
SEA
24h 27m
2 stops
Delta Logo
1:30 pm - 6:50 am
SEA
-
SYD
24h 20m
2 stops
$975Delta
Wed, Jun 3 - Wed, Jun 10
Delta Logo
9:15 am - 4:40 pm
SYD
-
SEA
24h 25m
1 stop
Delta Logo
5:25 am - 6:50 am
SEA
-
SYD
32h 25m
2 stops
$976Delta
Mon, Jul 20 - Tue, Aug 4
Delta Logo
9:15 am - 12:21 pm
SYD
-
SEA
20h 06m
1 stop
Delta Logo
5:30 pm - 6:50 am
SEA
-
SYD
20h 20m
1 stop
$982Delta
Wed, Jun 3 - Wed, Jun 10

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American Airlines flights from Sydney to Seattle

Our best American Airlines deals on Sydney to Seattle flight tickets
American Airlines
May 6
SYD9:10 amSydney Kingsford Smith
25h 39m
2 stops
SEA5:49 pmSeattle/Tacoma Intl
May 25
SEA6:50 amSeattle/Tacoma Intl
31h 15m
1 stop
SYD7:05 amSydney Kingsford Smith
$964
American Airlines
Jul 20
SYD9:10 amSydney Kingsford Smith
21h 38m
1 stop
SEA1:48 pmSeattle/Tacoma Intl
Aug 4
SEA2:20 pmSeattle/Tacoma Intl
23h 45m
1 stop
SYD7:05 amSydney Kingsford Smith
$965
American Airlines
May 21
SYD9:10 amSydney Kingsford Smith
21h 47m
1 stop
SEA1:57 pmSeattle/Tacoma Intl
Jun 1
SEA2:40 pmSeattle/Tacoma Intl
23h 25m
1 stop
SYD7:05 amSydney Kingsford Smith
$967

Delta flights from Sydney to Seattle

Our best Delta deals on Sydney to Seattle flight tickets
Delta
Jun 3
SYD9:15 amSydney Kingsford Smith
24h 27m
2 stops
SEA4:42 pmSeattle/Tacoma Intl
Jun 10
SEA1:30 pmSeattle/Tacoma Intl
24h 20m
2 stops
SYD6:50 amSydney Kingsford Smith
$975
Delta
Jul 20
SYD9:15 amSydney Kingsford Smith
24h 25m
1 stop
SEA4:40 pmSeattle/Tacoma Intl
Aug 4
SEA5:25 amSeattle/Tacoma Intl
32h 25m
2 stops
SYD6:50 amSydney Kingsford Smith
$976
Delta
May 6
SYD9:15 amSydney Kingsford Smith
26h 11m
1 stop
SEA6:26 pmSeattle/Tacoma Intl
May 25
SEA3:00 pmSeattle/Tacoma Intl
22h 50m
1 stop
SYD6:50 amSydney Kingsford Smith
$982

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 May 4, 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 7/21

9:10 am-1:48 pm

1 stop21h 38m

Seattle/Tacoma Intl

Tue 8/4

2:20 pm-7:05 am

1 stop23h 45m

$964

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Mon 7/20

9:10 am-1:48 pm

1 stop21h 38m

Seattle/Tacoma Intl

Tue 8/4

2:20 pm-7:05 am

1 stop23h 45m

$965

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Thu 5/21

9:10 am-1:57 pm

1 stop21h 47m

Seattle/Tacoma Intl

Mon 6/1

2:40 pm-7:05 am

1 stop23h 25m

$967

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 6/3

9:10 am-1:57 pm

1 stop21h 47m

Seattle/Tacoma Intl

Wed 6/10

2:40 pm-7:05 am

1 stop23h 25m

$968

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Thu 5/21

9:10 am-1:57 pm

1 stop21h 47m

Seattle/Tacoma Intl

Mon 6/1

3:20 pm-7:05 am

2 stops22h 45m

$971

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 6/3

9:10 am-1:57 pm

1 stop21h 47m

Seattle/Tacoma Intl

Wed 6/10

3:20 pm-7:05 am

2 stops22h 45m

$973

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Tue 6/9

9:10 am-12:01 pm

1 stop19h 51m

Seattle/Tacoma Intl

Tue 6/23

3:59 pm-7:05 am

1 stop22h 06m

$974

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 6/3

9:15 am-4:42 pm

2 stops24h 27m

Seattle/Tacoma Intl

Wed 6/10

1:30 pm-6:50 am

2 stops24h 20m

$975

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Mon 7/20

9:15 am-4:40 pm

1 stop24h 25m

Seattle/Tacoma Intl

Tue 8/4

5:25 am-6:50 am

2 stops32h 25m

$976
Quickest round-trip

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 6/3

9:15 am-12:21 pm

1 stop20h 06m

Seattle/Tacoma Intl

Wed 6/10

5:30 pm-6:50 am

1 stop20h 20m

$982

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 typical price of a round-trip flight between Sydney and Seattle?

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 $889. 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 $891.

How far in advance should I book a flight from Sydney 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 $1,049 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 $890 on momondo.

Can stopping save me money on Sydney to Seattle flights?

You could potentially save up to 28% 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 May 2026, prices for Sydney to Seattle flights are approximately 16% 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

Frequently asked questions about flying from Sydney to Seattle

  • 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
United AirlinesPriceFrom $794Free CancellationRating
7.4
9,680 reviews
Search United Airlines flights
Air CanadaPriceFrom $828Free CancellationRating
7.1
10,995 reviews
Search Air Canada 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
Redmond
Kent
Marysville
Puyallup
Tukwila
Lakewood
Cle Elum
Federal Way
Centralia
Fife
Shoreline
Westport
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.

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