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Cheap flights from Sydney to Seattle from $414

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 10/5. 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.
Multiple Airlines Logo
2:15 pm - 7:50 pmSYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
23h 35m2 stops Nadi Los Angeles
Multiple Airlines Logo
2:59 pm - 12:35 pmSEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
26h 36m2 stops Los Angeles Nadi
$886Multiple Airlines
Thu, Oct 22 - Wed, Nov 11
Multiple Airlines Logo
2:00 pm - 6:26 pmSYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
23h 26m2 stops Nadi Los Angeles
Multiple Airlines Logo
11:06 am - 6:25 amSEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
24h 19m1 stop Los Angeles
$919Multiple Airlines
Tue, Nov 10 - Wed, Nov 18
Multiple Airlines Logo
2:15 pm - 7:50 pmSYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
23h 35m2 stops Nadi Los Angeles
Multiple Airlines Logo
8:03 am - 12:35 pmSEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
33h 32m2 stops Los Angeles Nadi
$934Multiple Airlines
Thu, Oct 22 - Thu, Nov 12
Multiple Airlines Logo
2:15 pm - 6:26 pmSYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
22h 11m2 stops Nadi Los Angeles
Multiple Airlines Logo
11:06 am - 6:25 amSEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
24h 19m1 stop Los Angeles
$947Multiple Airlines
Wed, Oct 21 - Tue, Nov 10
United Airlines Logo
9:30 am - 3:45 pmSYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
23h 15m1 stop Los Angeles
United Airlines Logo
12:15 pm - 7:00 amSEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
25h 45m1 stop Los Angeles
$1,012United Airlines
Thu, Aug 27 - Thu, Sep 3
United Airlines Logo
9:30 am - 5:42 pmSYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
25h 12m2 stops Los Angeles Denver Intl
United Airlines Logo
6:52 pm - 7:00 amSEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
19h 08m1 stop Los Angeles
$1,012United Airlines
Thu, Aug 27 - Thu, Sep 3
United Airlines Logo
9:30 am - 3:45 pmSYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
23h 15m1 stop Los Angeles
United Airlines Logo
12:15 pm - 7:00 amSEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
25h 45m1 stop Los Angeles
$1,015United Airlines
Thu, Aug 27 - Thu, Sep 3
Air Canada Logo
9:20 am - 6:32 pmSYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
26h 12m1 stop Vancouver Intl
Air Canada Logo
7:20 pm - 8:20 amSEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
19h 00m1 stop Vancouver Intl
$1,049Air Canada
Thu, Oct 1 - Tue, Oct 13
Air Canada Logo
9:20 am - 10:05 amSYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
17h 45m1 stop Vancouver Intl
Air Canada Logo
10:50 am - 7:20 amSEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
27h 30m1 stop Vancouver Intl
$1,054Air Canada
Thu, Sep 10 - Mon, Sep 14
Air Canada Logo
10:20 am - 9:52 amSYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
17h 32m1 stop Vancouver Intl
Air Canada Logo
3:15 pm - 9:35 amSEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
23h 20m1 stop Vancouver Intl
$1,061Air Canada
Thu, Oct 22 - Thu, Nov 12

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United Airlines flights from Sydney to Seattle

Our best United Airlines deals on Sydney to Seattle flight tickets
United Airlines
Aug 11
SYD9:30 amSydney Kingsford Smith
25h 12m
2 stops
SEA5:42 pmSeattle/Tacoma Intl
Sep 8
SEA5:20 pmSeattle/Tacoma Intl
20h 35m
1 stop
SYD6:55 amSydney Kingsford Smith
$962
United Airlines
Aug 13
SYD9:30 amSydney Kingsford Smith
19h 04m
1 stop
SEA11:34 amSeattle/Tacoma Intl
Aug 19
SEA11:59 pmSeattle/Tacoma Intl
38h 01m
2 stops
SYD7:00 amSydney Kingsford Smith
$1,010
United Airlines
Aug 27
SYD9:30 amSydney Kingsford Smith
25h 12m
2 stops
SEA5:42 pmSeattle/Tacoma Intl
Sep 3
SEA6:52 pmSeattle/Tacoma Intl
19h 08m
1 stop
SYD7:00 amSydney Kingsford Smith
$1,012

Air Canada flights from Sydney to Seattle

Our best Air Canada deals on Sydney to Seattle flight tickets
Air Canada
Oct 1
SYD9:20 amSydney Kingsford Smith
26h 12m
1 stop
SEA6:32 pmSeattle/Tacoma Intl
Oct 13
SEA7:20 pmSeattle/Tacoma Intl
19h 00m
1 stop
SYD8:20 amSydney Kingsford Smith
$1,049
Air Canada
Sep 10
SYD9:20 amSydney Kingsford Smith
17h 45m
1 stop
SEA10:05 amSeattle/Tacoma Intl
Sep 14
SEA10:50 amSeattle/Tacoma Intl
27h 30m
1 stop
SYD7:20 amSydney Kingsford Smith
$1,054
Air Canada
Oct 22
SYD10:20 amSydney Kingsford Smith
17h 32m
1 stop
SEA9:52 amSeattle/Tacoma Intl
Nov 12
SEA3:15 pmSeattle/Tacoma Intl
23h 20m
1 stop
SYD9:35 amSydney Kingsford Smith
$1,061

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 August 11, 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 Sydney Kingsford Smith - SEA Seattle/Tacoma Intl

SYDSEA

Sydney Kingsford Smith

Thu 10/22

2:15 pm-7:50 pm

2 stops23h 35m

Seattle/Tacoma Intl

Wed 11/11

2:59 pm-12:35 pm

2 stops26h 36m

$886

SydneySeattle

SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl

SYDSEA

Sydney Kingsford Smith

Tue 11/10

2:00 pm-6:26 pm

2 stops23h 26m

Seattle/Tacoma Intl

Wed 11/18

11:06 am-6:25 am

1 stop24h 19m

$919

SydneySeattle

SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl

SYDSEA

Sydney Kingsford Smith

Thu 10/22

2:15 pm-7:50 pm

2 stops23h 35m

Seattle/Tacoma Intl

Thu 11/12

8:03 am-12:35 pm

2 stops33h 32m

$934

SydneySeattle

SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl

SYDSEA

Sydney Kingsford Smith

Wed 10/21

2:15 pm-6:26 pm

2 stops22h 11m

Seattle/Tacoma Intl

Tue 11/10

11:06 am-6:25 am

1 stop24h 19m

$947

SydneySeattle

SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl

SYDSEA

Sydney Kingsford Smith

Thu 8/27

9:30 am-3:45 pm

1 stop23h 15m

Seattle/Tacoma Intl

Thu 9/3

12:15 pm-7:00 am

1 stop25h 45m

$1,012

SydneySeattle

SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl

SYDSEA

Sydney Kingsford Smith

Thu 8/27

9:30 am-5:42 pm

2 stops25h 12m

Seattle/Tacoma Intl

Thu 9/3

6:52 pm-7:00 am

1 stop19h 08m

$1,012

SydneySeattle

SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl

SYDSEA

Sydney Kingsford Smith

Thu 8/27

9:30 am-3:45 pm

1 stop23h 15m

Seattle/Tacoma Intl

Thu 9/3

12:15 pm-7:00 am

1 stop25h 45m

$1,015

SydneySeattle

SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl

SYDSEA

Sydney Kingsford Smith

Thu 10/1

9:20 am-6:32 pm

1 stop26h 12m

Seattle/Tacoma Intl

Tue 10/13

7:20 pm-8:20 am

1 stop19h 00m

$1,049

SydneySeattle

SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl

SYDSEA

Sydney Kingsford Smith

Thu 9/10

9:20 am-10:05 am

1 stop17h 45m

Seattle/Tacoma Intl

Mon 9/14

10:50 am-7:20 am

1 stop27h 30m

$1,054
Quickest round-trip

SydneySeattle

SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl

SYDSEA

Sydney Kingsford Smith

Thu 10/22

10:20 am-9:52 am

1 stop17h 32m

Seattle/Tacoma Intl

Thu 11/12

3:15 pm-9:35 am

1 stop23h 20m

$1,061

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?

Prices are currently typical for flights on this route.

Typical prices usually range from $851 to $1,088.
The lowest price recently found on this route was $886.

What is the cheapest month to fly to Seattle?

In general, September 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 $983. If you don’t want to visit Seattle in September, then you should wait until August to fly from Sydney, when ticket prices are also cheap, with an average price of $989.

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 $1,081 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 $660 on momondo.

Can stopping save me money on Sydney to Seattle flights?

You could potentially save up to 11% 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 August 2026, prices for Sydney to Seattle flights are approximately 18% 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

21h 05m

Direct flights

None
The fastest flight from Sydney to Seattle takes 21h 05m
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 21h 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
United AirlinesPriceFrom $691Free CancellationRating
7.4
10,103 reviews
Search United Airlines flights
Air CanadaPriceFrom $828Free CancellationRating
7.1
11,460 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
Kent
Lynnwood
Redmond
Lakewood
Federal Way
Puyallup
Tukwila
Fife
Cle Elum
Marysville
Kirkland
Centralia
Shoreline
Lacey

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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