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Cheap flights from Sydney to Seattle from $550

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 11/16. 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

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
1:00 pm - 9:28 am
SYD
-
SEA
38h 28m
1 stop
American Airlines Logo
7:40 am - 8:05 am
SEA
-
SYD
30h 25m
1 stop
$844American Airlines
Mon, Oct 19 - Wed, Oct 21
American Airlines Logo
10:10 am - 9:26 pm
SYD
-
SEA
29h 16m
1 stop
American Airlines Logo
7:40 am - 6:25 am
SEA
-
SYD
28h 45m
2 stops
$856American Airlines
Mon, Oct 19 - Tue, Oct 20
Multiple Airlines Logo
2:00 pm - 6:48 pm
SYD
-
SEA
22h 48m
2 stops
Multiple Airlines Logo
9:50 am - 10:05 pm
SEA
-
SYD
41h 15m
2 stops
$861Multiple Airlines
Thu, Oct 29 - Sun, Nov 1
American Airlines Logo
1:00 pm - 9:28 am
SYD
-
SEA
38h 28m
1 stop
American Airlines Logo
7:40 am - 8:05 am
SEA
-
SYD
30h 25m
1 stop
$879American Airlines
Tue, Oct 20 - Thu, Oct 22
Multiple Airlines Logo
2:15 pm - 6:48 pm
SYD
-
SEA
22h 33m
2 stops
Multiple Airlines Logo
8:15 am - 12:50 pm
SEA
-
SYD
34h 35m
2 stops
$883Multiple Airlines
Thu, Oct 8 - Tue, Oct 20
Multiple Airlines Logo
2:15 pm - 10:57 pm
SYD
-
SEA
26h 42m
2 stops
Multiple Airlines Logo
8:15 am - 12:50 pm
SEA
-
SYD
34h 35m
2 stops
$885Multiple Airlines
Thu, Oct 8 - Tue, Oct 20
American Airlines Logo
1:00 pm - 7:50 pm
SYD
-
SEA
24h 50m
2 stops
American Airlines Logo
7:40 am - 8:05 am
SEA
-
SYD
30h 25m
1 stop
$891American Airlines
Wed, Oct 21 - Thu, Oct 22
Multiple Airlines Logo
6:15 am - 10:59 pm
SYD
-
SEA
33h 44m
2 stops
Multiple Airlines Logo
5:59 pm - 11:50 am
SEA
-
SYD
24h 51m
2 stops
$898Multiple Airlines
Wed, Sep 9 - Fri, Sep 25
American Airlines Logo
9:25 pm - 10:24 am
SYD
-
SEA
30h 59m
2 stops
American Airlines Logo
7:40 am - 8:05 am
SEA
-
SYD
30h 25m
1 stop
$904American Airlines
Tue, Oct 20 - Thu, Oct 22
Qantas Airways Logo
1:00 pm - 9:28 am
SYD
-
SEA
38h 28m
1 stop
Qantas Airways Logo
7:40 am - 8:05 am
SEA
-
SYD
30h 25m
1 stop
$917Qantas Airways
Mon, Oct 19 - Wed, Oct 21

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United Airlines flights from Sydney to Seattle

Our best United Airlines deals on Sydney to Seattle flight tickets
United Airlines
Jul 27
SYD9:30 amSydney Kingsford Smith
30h 40m
2 stops
SEA11:10 pmSeattle/Tacoma Intl
Aug 12
SEA6:52 pmSeattle/Tacoma Intl
19h 08m
1 stop
SYD7:00 amSydney Kingsford Smith
$948
United Airlines
Jul 27
SYD9:30 amSydney Kingsford Smith
30h 40m
2 stops
SEA11:10 pmSeattle/Tacoma Intl
Aug 12
SEA6:52 pmSeattle/Tacoma Intl
19h 08m
1 stop
SYD7:00 amSydney Kingsford Smith
$949
United Airlines
Jul 27
SYD9:30 amSydney Kingsford Smith
30h 40m
2 stops
SEA11:10 pmSeattle/Tacoma Intl
Aug 12
SEA7:35 pmSeattle/Tacoma Intl
18h 20m
1 stop
SYD6:55 amSydney Kingsford Smith
$952

Qantas Airways flights from Sydney to Seattle

Our best Qantas Airways deals on Sydney to Seattle flight tickets
Qantas Airways
Oct 19
SYD1:00 pmSydney Kingsford Smith
38h 28m
1 stop
SEA9:28 amSeattle/Tacoma Intl
Oct 21
SEA7:40 amSeattle/Tacoma Intl
30h 25m
1 stop
SYD8:05 amSydney Kingsford Smith
$917
Qantas Airways
Jun 24
SYD6:25 amSydney Kingsford Smith
29h 50m
2 stops
SEA7:15 pmSeattle/Tacoma Intl
Jul 8
SEA2:38 pmSeattle/Tacoma Intl
32h 22m
2 stops
SYD4:00 pmSydney Kingsford Smith
$1,671

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 June 20, 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

Mon 10/19

1:00 pm-9:28 am

1 stop38h 28m

Seattle/Tacoma Intl

Wed 10/21

7:40 am-8:05 am

1 stop30h 25m

$844

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Mon 10/19

10:10 am-9:26 pm

1 stop29h 16m

Seattle/Tacoma Intl

Tue 10/20

7:40 am-6:25 am

2 stops28h 45m

$856

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Thu 10/29

2:00 pm-6:48 pm

2 stops22h 48m

Seattle/Tacoma Intl

Sun 11/1

9:50 am-10:05 pm

2 stops41h 15m

$861

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Tue 10/20

1:00 pm-9:28 am

1 stop38h 28m

Seattle/Tacoma Intl

Thu 10/22

7:40 am-8:05 am

1 stop30h 25m

$879

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Thu 10/8

2:15 pm-6:48 pm

2 stops22h 33m

Seattle/Tacoma Intl

Tue 10/20

8:15 am-12:50 pm

2 stops34h 35m

$883

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Thu 10/8

2:15 pm-10:57 pm

2 stops26h 42m

Seattle/Tacoma Intl

Tue 10/20

8:15 am-12:50 pm

2 stops34h 35m

$885
Quickest round-trip

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 10/21

1:00 pm-7:50 pm

2 stops24h 50m

Seattle/Tacoma Intl

Thu 10/22

7:40 am-8:05 am

1 stop30h 25m

$891

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 9/9

6:15 am-10:59 pm

2 stops33h 44m

Seattle/Tacoma Intl

Fri 9/25

5:59 pm-11:50 am

2 stops24h 51m

$898

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Tue 10/20

9:25 pm-10:24 am

2 stops30h 59m

Seattle/Tacoma Intl

Thu 10/22

7:40 am-8:05 am

1 stop30h 25m

$904

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Mon 10/19

1:00 pm-9:28 am

1 stop38h 28m

Seattle/Tacoma Intl

Wed 10/21

7:40 am-8:05 am

1 stop30h 25m

$917

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 $888. 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 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 $1,052 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 $692 on momondo.

Can stopping save me money on Sydney to Seattle flights?

You could potentially save up to 8% 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 June 2026, prices for Sydney to Seattle flights are approximately 27% 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

17h 31m

Direct flights

None
The fastest flight from Sydney to Seattle takes 17h 31m
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 17h 31m, 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 $828Free CancellationRating
7.1
11,226 reviews
Search Air Canada flights
United AirlinesPriceFrom $871Free CancellationRating
7.4
9,865 reviews
Search United Airlines 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
Lakewood
Puyallup
Tukwila
Federal Way
Fife
Cle Elum
Marysville
Centralia
Shoreline
Kirkland
Westport

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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