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Cheap flights from Sydney to Seattle from $586

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 5/10. 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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Find the cheapest flights from Sydney to Seattle

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
14:15 - 19:50SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
23h 35m2 stops Nadi Los Angeles Los Angeles
Multiple Airlines Logo
14:59 - 12:35SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
26h 36m2 stops Los Angeles Los Angeles Nadi
$1,255Multiple Airlines
Thu, 22 Oct - Wed, 11 Nov
Multiple Airlines Logo
14:00 - 18:26SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
23h 26m2 stops Nadi Los Angeles Los Angeles
Multiple Airlines Logo
11:06 - 06:25SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
24h 19m1 stop Los Angeles Los Angeles
$1,301Multiple Airlines
Tue, 10 Nov - Wed, 18 Nov
United Airlines Logo
09:30 - 15:45SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
23h 15m1 stop Los Angeles Los Angeles
United Airlines Logo
12:15 - 07:00SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
25h 45m1 stop Los Angeles Los Angeles
$1,433United Airlines
Thu, 27 Aug - Thu, 3 Sep
United Airlines Logo
09:30 - 17:42SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
25h 12m2 stops Los Angeles Los Angeles Denver Intl
United Airlines Logo
18:52 - 07:00SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
19h 08m1 stop Los Angeles Los Angeles
$1,433United Airlines
Thu, 27 Aug - Thu, 3 Sep
Air Canada Logo
09:20 - 18:32SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
26h 12m1 stop Vancouver Intl
Air Canada Logo
19:20 - 08:20SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
19h 00m1 stop Vancouver Intl
$1,485Air Canada
Thu, 1 Oct - Tue, 13 Oct
Air Canada Logo
09:20 - 10:05SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
17h 45m1 stop Vancouver Intl
Air Canada Logo
10:50 - 07:20SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
27h 30m1 stop Vancouver Intl
$1,493Air Canada
Thu, 10 Sep - Mon, 14 Sep
Delta Logo
10:40 - 10:35SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
18h 55m1 stop Los Angeles Los Angeles
Delta Logo
17:55 - 08:30SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
19h 35m1 stop Los Angeles Los Angeles
$1,548Delta
Mon, 25 Jan - Mon, 22 Feb
Delta Logo
10:40 - 10:35SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
18h 55m1 stop Los Angeles Los Angeles
Delta Logo
17:55 - 08:30SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
19h 35m1 stop Los Angeles Los Angeles
$1,548Delta
Mon, 25 Jan - Wed, 24 Feb
American Airlines Logo
11:20 - 21:59SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
29h 39m1 stop Los Angeles Los Angeles
American Airlines Logo
05:27 - 18:00SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
41h 33m2 stops Dallas/Fort Worth Brisbane
$1,555American Airlines
Mon, 25 Jan - Mon, 22 Feb
American Airlines Logo
11:20 - 21:59SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
29h 39m1 stop Los Angeles Los Angeles
American Airlines Logo
12:52 - 18:00SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
34h 08m2 stops Dallas/Fort Worth Brisbane
$1,555American Airlines
Tue, 26 Jan - Mon, 22 Feb

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United Airlines flights from Sydney to Seattle

Our best United Airlines deals on Sydney to Seattle flight tickets
United Airlines
12 Aug
SYD09:30Sydney Kingsford Smith
19h 04m
1 stop
SEA11:34Seattle/Tacoma Intl
8 Sept
SEA11:03Seattle/Tacoma Intl
26h 57m
2 stops
SYD07:00Sydney Kingsford Smith
$1,362
United Airlines
13 Aug
SYD09:30Sydney Kingsford Smith
19h 04m
1 stop
SEA11:34Seattle/Tacoma Intl
19 Aug
SEA23:59Seattle/Tacoma Intl
38h 01m
2 stops
SYD07:00Sydney Kingsford Smith
$1,430
United Airlines
27 Aug
SYD09:30Sydney Kingsford Smith
25h 12m
2 stops
SEA17:42Seattle/Tacoma Intl
3 Sept
SEA18:52Seattle/Tacoma Intl
19h 08m
1 stop
SYD07:00Sydney Kingsford Smith
$1,433

Air Canada flights from Sydney to Seattle

Our best Air Canada deals on Sydney to Seattle flight tickets
Air Canada
1 Oct
SYD09:20Sydney Kingsford Smith
26h 12m
1 stop
SEA18:32Seattle/Tacoma Intl
13 Oct
SEA19:20Seattle/Tacoma Intl
19h 00m
1 stop
SYD08:20Sydney Kingsford Smith
$1,485
Air Canada
10 Sept
SYD09:20Sydney Kingsford Smith
17h 45m
1 stop
SEA10:05Seattle/Tacoma Intl
14 Sept
SEA10:50Seattle/Tacoma Intl
27h 30m
1 stop
SYD07:20Sydney Kingsford Smith
$1,492
Air Canada
22 Oct
SYD10:20Sydney Kingsford Smith
17h 32m
1 stop
SEA09:52Seattle/Tacoma Intl
12 Nov
SEA15:15Seattle/Tacoma Intl
23h 20m
1 stop
SYD09:35Sydney Kingsford Smith
$1,502

momondo Fare Finder

 
Customise 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 78,305 searches. Data last updated 11 August 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 return flight

SydneySeattle

SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl

SYDSEA

Sydney Kingsford Smith

Thu 22/10

14:15-19:50

2 stops23h 35m

Seattle/Tacoma Intl

Wed 11/11

14:59-12:35

2 stops26h 36m

$1,255

SydneySeattle

SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl

SYDSEA

Sydney Kingsford Smith

Tue 10/11

14:00-18:26

2 stops23h 26m

Seattle/Tacoma Intl

Wed 18/11

11:06-06:25

1 stop24h 19m

$1,301

SydneySeattle

SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl

SYDSEA

Sydney Kingsford Smith

Thu 27/8

09:30-15:45

1 stop23h 15m

Seattle/Tacoma Intl

Thu 3/9

12:15-07:00

1 stop25h 45m

$1,433

SydneySeattle

SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl

SYDSEA

Sydney Kingsford Smith

Thu 27/8

09:30-17:42

2 stops25h 12m

Seattle/Tacoma Intl

Thu 3/9

18:52-07:00

1 stop19h 08m

$1,433

SydneySeattle

SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl

SYDSEA

Sydney Kingsford Smith

Thu 1/10

09:20-18:32

1 stop26h 12m

Seattle/Tacoma Intl

Tue 13/10

19:20-08:20

1 stop19h 00m

$1,485

SydneySeattle

SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl

SYDSEA

Sydney Kingsford Smith

Thu 10/9

09:20-10:05

1 stop17h 45m

Seattle/Tacoma Intl

Mon 14/9

10:50-07:20

1 stop27h 30m

$1,492
Fastest return journey

SydneySeattle

SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl

SYDSEA

Sydney Kingsford Smith

Mon 25/1

10:40-10:35

1 stop18h 55m

Seattle/Tacoma Intl

Mon 22/2

17:55-08:30

1 stop19h 35m

$1,548

SydneySeattle

SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl

SYDSEA

Sydney Kingsford Smith

Mon 25/1

10:40-10:35

1 stop18h 55m

Seattle/Tacoma Intl

Wed 24/2

17:55-08:30

1 stop19h 35m

$1,548

SydneySeattle

SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl

SYDSEA

Sydney Kingsford Smith

Mon 25/1

11:20-21:59

1 stop29h 39m

Seattle/Tacoma Intl

Mon 22/2

05:27-18:00

2 stops41h 33m

$1,555

SydneySeattle

SYD Sydney Kingsford Smith - SEA Seattle/Tacoma Intl

SYDSEA

Sydney Kingsford Smith

Tue 26/1

11:20-21:59

1 stop29h 39m

Seattle/Tacoma Intl

Mon 22/2

12:52-18:00

2 stops34h 08m

$1,555

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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 $1,205 to $1,541.
The lowest price recently found on this route was $1,255.

What is the cheapest month to fly to Seattle?

The month of September is, on average, the cheapest month to fly to Seattle from Sydney, with most prices found around $1,392. If you are unable to visit Seattle during the month of September, then departing from Sydney during the month August is also very affordable. Most momondo users find prices during this month for around $1,400.

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 $1,531 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Sydney for as low as $935 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 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 return 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?

    There are 12462.2 km between Sydney Kingsford Smith and Seattle/Tacoma Intl. A reasonable flight in good conditions will take 21h 05m.

  • 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 refresh daily.

  • 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 that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check 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 necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • 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
Hawaiian AirlinesPriceFrom $1,041Free cancellationRating
7.8
2,817 reviews
Search Hawaiian Airlines flights
DeltaPriceFrom $1,075Free cancellationRating
7.8
8,505 reviews
Search Delta flights
Air CanadaPriceFrom $1,132Free cancellationRating
7.1
11,461 reviews
Search Air Canada flights
United AirlinesPriceFrom $1,170Free cancellationRating
7.4
10,104 reviews
Search United Airlines flights
Qantas AirwaysPriceFrom $1,201Free cancellationRating
7.5
1,081 reviews
Search Qantas Airways flights
American AirlinesPriceFrom $1,248Free cancellationRating
7.1
11,903 reviews
Search American Airlines flights
ANAPriceFrom $1,298Free cancellationRating
8.3
1,294 reviews
Search ANA flights

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Leavenworth
SeaTac

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Sydney to Seattle. momondo saves you time and could save you money on your trip.

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

momondo does allow users to show only those flights to Seattle from Sydney which offer a flexible booking policy as well as other useful filters and features.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Sydney to Seattle.

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

If you are simply researching potential flights to Seattle, momondo offers a useful price alert feature which will track prices for flights to Seattle from Sydney and alert you when they change.

An easier way to manage your Seattle trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
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