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Cheap flights from Sydney to Seattle from $718

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 25/2. 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

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Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
14:00 - 22:43
SYD
-
SEA
26h 43m
2 stops
Multiple Airlines Logo
09:08 - 12:50
SEA
-
SYD
33h 42m
2 stops
$1,120Multiple Airlines
Mon, 16 Mar - Tue, 31 Mar
Multiple Airlines Logo
14:00 - 18:51
SYD
-
SEA
22h 51m
2 stops
Multiple Airlines Logo
09:08 - 12:50
SEA
-
SYD
33h 42m
2 stops
$1,128Multiple Airlines
Wed, 18 Mar - Tue, 31 Mar
Air Canada Logo
11:20 - 09:35
SYD
-
SEA
17h 15m
1 stop
Air Canada Logo
05:40 - 08:35
SEA
-
SYD
32h 55m
1 stop
$1,161Air Canada
Thu, 5 Mar - Wed, 18 Mar
Air Canada Logo
11:20 - 09:35
SYD
-
SEA
17h 15m
1 stop
Air Canada Logo
15:40 - 08:35
SEA
-
SYD
22h 55m
1 stop
$1,164Air Canada
Thu, 5 Mar - Wed, 18 Mar
Air Canada Logo
10:20 - 09:35
SYD
-
SEA
17h 15m
1 stop
Air Canada Logo
20:00 - 08:20
SEA
-
SYD
18h 20m
1 stop
$1,171Air Canada
Wed, 18 Mar - Tue, 31 Mar
Air Canada Logo
09:00 - 09:35
SYD
-
SEA
19h 35m
2 stops
Air Canada Logo
05:40 - 08:35
SEA
-
SYD
32h 55m
1 stop
$1,183Air Canada
Thu, 5 Mar - Wed, 18 Mar
Air Canada Logo
09:00 - 09:35
SYD
-
SEA
19h 35m
2 stops
Air Canada Logo
10:10 - 08:35
SEA
-
SYD
28h 25m
1 stop
$1,185Air Canada
Thu, 5 Mar - Wed, 18 Mar
Air Canada Logo
08:00 - 09:35
SYD
-
SEA
19h 35m
2 stops
Air Canada Logo
10:20 - 08:20
SEA
-
SYD
28h 00m
1 stop
$1,191Air Canada
Wed, 18 Mar - Tue, 31 Mar
Air Canada Logo
11:20 - 15:01
SYD
-
SEA
22h 41m
1 stop
Air Canada Logo
20:00 - 08:35
SEA
-
SYD
18h 35m
1 stop
$1,195Air Canada
Thu, 5 Mar - Wed, 18 Mar
Multiple Airlines Logo
06:00 - 23:43
SYD
-
SEA
35h 43m
2 stops
Multiple Airlines Logo
07:40 - 12:50
SEA
-
SYD
35h 10m
2 stops
$1,197Multiple Airlines
Sat, 14 Mar - Sun, 29 Mar

Air Canada flights from Sydney to Seattle

Our best Air Canada deals on Sydney to Seattle flight tickets
Air Canada
5 Mar
SYD11:20Sydney Kingsford Smith
17h 15m
1 stop
SEA09:35Seattle/Tacoma Intl
18 Mar
SEA05:40Seattle/Tacoma Intl
32h 55m
1 stop
SYD08:35Sydney Kingsford Smith
$1,161
Air Canada
5 Mar
SYD11:20Sydney Kingsford Smith
17h 15m
1 stop
SEA09:35Seattle/Tacoma Intl
18 Mar
SEA15:40Seattle/Tacoma Intl
22h 55m
1 stop
SYD08:35Sydney Kingsford Smith
$1,164
Air Canada
18 Mar
SYD10:20Sydney Kingsford Smith
17h 15m
1 stop
SEA09:35Seattle/Tacoma Intl
31 Mar
SEA20:00Seattle/Tacoma Intl
18h 20m
1 stop
SYD08:20Sydney Kingsford Smith
$1,171

American Airlines flights from Sydney to Seattle

Our best American Airlines deals on Sydney to Seattle flight tickets
American Airlines
13 July
SYD09:10Sydney Kingsford Smith
21h 35m
1 stop
SEA13:45Seattle/Tacoma Intl
28 July
SEA15:24Seattle/Tacoma Intl
22h 41m
2 stops
SYD07:05Sydney Kingsford Smith
$1,276
American Airlines
13 July
SYD09:10Sydney Kingsford Smith
21h 35m
1 stop
SEA13:45Seattle/Tacoma Intl
28 July
SEA14:32Seattle/Tacoma Intl
23h 33m
1 stop
SYD07:05Sydney Kingsford Smith
$1,277
American Airlines
13 July
SYD09:10Sydney Kingsford Smith
30h 45m
1 stop
SEA22:55Seattle/Tacoma Intl
28 July
SEA07:00Seattle/Tacoma Intl
31h 05m
1 stop
SYD07:05Sydney Kingsford Smith
$1,284

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 16 February 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

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Mon 16/3

14:00-22:43

2 stops26h 43m

Seattle/Tacoma Intl

Tue 31/3

09:08-12:50

2 stops33h 42m

$1,120

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 18/3

14:00-18:51

2 stops22h 51m

Seattle/Tacoma Intl

Tue 31/3

09:08-12:50

2 stops33h 42m

$1,128

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Thu 5/3

11:20-09:35

1 stop17h 15m

Seattle/Tacoma Intl

Wed 18/3

05:40-08:35

1 stop32h 55m

$1,161

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Thu 5/3

11:20-09:35

1 stop17h 15m

Seattle/Tacoma Intl

Wed 18/3

15:40-08:35

1 stop22h 55m

$1,164

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 18/3

10:20-09:35

1 stop17h 15m

Seattle/Tacoma Intl

Tue 31/3

20:00-08:20

1 stop18h 20m

$1,171

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Thu 5/3

09:00-09:35

2 stops19h 35m

Seattle/Tacoma Intl

Wed 18/3

05:40-08:35

1 stop32h 55m

$1,183

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Thu 5/3

09:00-09:35

2 stops19h 35m

Seattle/Tacoma Intl

Wed 18/3

10:10-08:35

1 stop28h 25m

$1,185

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 18/3

08:00-09:35

2 stops19h 35m

Seattle/Tacoma Intl

Tue 31/3

10:20-08:20

1 stop28h 00m

$1,191

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Thu 5/3

11:20-15:01

1 stop22h 41m

Seattle/Tacoma Intl

Wed 18/3

20:00-08:35

1 stop18h 35m

$1,195

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Sat 14/3

06:00-23:43

2 stops35h 43m

Seattle/Tacoma Intl

Sun 29/3

07:40-12:50

2 stops35h 10m

$1,197

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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?

The month of August is, on average, the cheapest month to fly to Seattle from Sydney, with most prices found around $1,266. If you are unable to visit Seattle during the month of August, then departing from Sydney during the month September is also very affordable. Most momondo users find prices during this month for around $1,308.

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 $1,511 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 $1,291 on momondo.

How have Sydney to Seattle flight prices changed over time?

As of February 2026, prices for Sydney to Seattle flights are approximately 12% more expensive 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

16h 55m

Direct flights

None
The fastest flight from Sydney to Seattle takes 16h 55m
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?

    There are 12462.2 km between Sydney Kingsford Smith and Seattle/Tacoma Intl. A reasonable flight in good conditions will take 16h 55m.

  • 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
DeltaPriceFrom $686Free cancellationRating
7.9
8,204 reviews
Search Delta flights
Virgin AustraliaPriceFrom $1,062Free cancellationRating
7.5
439 reviews
Search Virgin Australia flights
Air CanadaPriceFrom $1,080Free cancellationRating
7.1
10,724 reviews
Search Air Canada flights
Alaska AirlinesPriceFrom $1,106Free cancellationRating
8.0
11,887 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $1,122Free cancellationRating
7.4
9,306 reviews
Search United Airlines flights
Hawaiian AirlinesPriceFrom $1,157Free cancellationRating
7.8
2,833 reviews
Search Hawaiian Airlines flights
Qantas AirwaysPriceFrom $1,170Free cancellationRating
7.5
991 reviews
Search Qantas Airways flights
American AirlinesPriceFrom $1,195Free cancellationRating
7.2
11,292 reviews
Search American Airlines flights
Philippine AirlinesPriceFrom $1,207Free cancellationRating
7.2
956 reviews
Search Philippine Airlines flights
Asiana AirlinesPriceFrom $1,370Free cancellationRating
8.1
504 reviews
Search Asiana Airlines 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

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