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Cheap flights from Sydney to Seattle from $629

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 27/2. 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 - 22:42
SYD
-
SEA
26h 42m
2 stops
Multiple Airlines Logo
11:25 - 11:45
SEA
-
SYD
31h 20m
2 stops
$1,365Multiple Airlines
Fri, 20 Mar - Fri, 17 Apr
Multiple Airlines Logo
14:00 - 16:42
SYD
-
SEA
21h 42m
2 stops
Multiple Airlines Logo
15:52 - 12:35
SEA
-
SYD
25h 43m
2 stops
$1,396Multiple Airlines
Wed, 11 Feb - Wed, 18 Feb
Multiple Airlines Logo
14:00 - 16:42
SYD
-
SEA
21h 42m
2 stops
Multiple Airlines Logo
15:52 - 12:35
SEA
-
SYD
25h 43m
2 stops
$1,398Multiple Airlines
Wed, 11 Feb - Wed, 18 Feb
Multiple Airlines Logo
14:00 - 20:52
SYD
-
SEA
25h 52m
2 stops
Multiple Airlines Logo
15:50 - 12:35
SEA
-
SYD
25h 45m
2 stops
$1,408Multiple Airlines
Wed, 11 Feb - Thu, 26 Feb
Multiple Airlines Logo
14:00 - 18:57
SYD
-
SEA
23h 57m
2 stops
Multiple Airlines Logo
16:50 - 12:35
SEA
-
SYD
24h 45m
2 stops
$1,422Multiple Airlines
Thu, 12 Feb - Fri, 27 Feb
Multiple Airlines Logo
14:00 - 08:47
SYD
-
SEA
37h 47m
2 stops
Multiple Airlines Logo
09:28 - 07:25
SEA
-
SYD
26h 57m
1 stop
$1,432Multiple Airlines
Sun, 1 Mar - Thu, 5 Mar
Air New Zealand Logo
11:45 - 22:13
SYD
-
SEA
29h 28m
2 stops
Air New Zealand Logo
12:32 - 08:45
SEA
-
SYD
25h 13m
2 stops
$1,456Air New Zealand
Fri, 13 Feb - Sat, 28 Feb
Asiana Airlines Logo
09:30 - 14:55
SYD
-
SEA
22h 25m
1 stop
Asiana Airlines Logo
00:55 - 07:30
SEA
-
SYD
37h 35m
1 stop
$1,476Asiana Airlines
Sun, 31 May - Fri, 26 Jun
Asiana Airlines Logo
09:30 - 14:55
SYD
-
SEA
22h 25m
1 stop
Asiana Airlines Logo
00:55 - 07:30
SEA
-
SYD
37h 35m
1 stop
$1,477Asiana Airlines
Sun, 31 May - Fri, 26 Jun
Philippine Airlines Logo
11:35 - 18:40
SYD
-
SEA
26h 05m
1 stop
Philippine Airlines Logo
21:30 - 09:50
SEA
-
SYD
41h 20m
1 stop
$1,483Philippine Airlines
Thu, 12 Feb - Fri, 27 Feb

Air New Zealand flights from Sydney to Seattle

Our best Air New Zealand deals on Sydney to Seattle flight tickets
Air New Zealand
13 Feb
SYD11:45Sydney Kingsford Smith
29h 28m
2 stops
SEA22:13Seattle/Tacoma Intl
28 Feb
SEA12:32Seattle/Tacoma Intl
25h 13m
2 stops
SYD08:45Sydney Kingsford Smith
$1,456
Air New Zealand
22 June
SYD11:55Sydney Kingsford Smith
29h 38m
2 stops
SEA00:33Seattle/Tacoma Intl
29 June
SEA17:00Seattle/Tacoma Intl
22h 45m
2 stops
SYD08:45Sydney Kingsford Smith
$1,592

Asiana Airlines flights from Sydney to Seattle

Our best Asiana Airlines deals on Sydney to Seattle flight tickets
Asiana Airlines
31 May
SYD09:30Sydney Kingsford Smith
22h 25m
1 stop
SEA14:55Seattle/Tacoma Intl
26 June
SEA00:55Seattle/Tacoma Intl
37h 35m
1 stop
SYD07:30Sydney Kingsford Smith
$1,476
Asiana Airlines
31 May
SYD09:30Sydney Kingsford Smith
22h 25m
1 stop
SEA14:55Seattle/Tacoma Intl
26 June
SEA00:55Seattle/Tacoma Intl
37h 35m
1 stop
SYD07:30Sydney Kingsford Smith
$1,477
Asiana Airlines
13 Mar
SYD10:20Sydney Kingsford Smith
22h 35m
1 stop
SEA14:55Seattle/Tacoma Intl
16 Mar
SEA00:10Seattle/Tacoma Intl
38h 10m
1 stop
SYD08:20Sydney Kingsford Smith
$1,585

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 17 January 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

Fri 20/3

14:00-22:42

2 stops26h 42m

Seattle/Tacoma Intl

Fri 17/4

11:25-11:45

2 stops31h 20m

$1,365

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 11/2

14:00-16:42

2 stops21h 42m

Seattle/Tacoma Intl

Wed 18/2

15:52-12:35

2 stops25h 43m

$1,396

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 11/2

14:00-16:42

2 stops21h 42m

Seattle/Tacoma Intl

Wed 18/2

15:52-12:35

2 stops25h 43m

$1,398

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 11/2

14:00-20:52

2 stops25h 52m

Seattle/Tacoma Intl

Thu 26/2

15:50-12:35

2 stops25h 45m

$1,408

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Thu 12/2

14:00-18:57

2 stops23h 57m

Seattle/Tacoma Intl

Fri 27/2

16:50-12:35

2 stops24h 45m

$1,422

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Sun 1/3

14:00-08:47

2 stops37h 47m

Seattle/Tacoma Intl

Thu 5/3

09:28-07:25

1 stop26h 57m

$1,432

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Fri 13/2

11:45-22:13

2 stops29h 28m

Seattle/Tacoma Intl

Sat 28/2

12:32-08:45

2 stops25h 13m

$1,456

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Sun 31/5

09:30-14:55

1 stop22h 25m

Seattle/Tacoma Intl

Fri 26/6

00:55-07:30

1 stop37h 35m

$1,476

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Sun 31/5

09:30-14:55

1 stop22h 25m

Seattle/Tacoma Intl

Fri 26/6

00:55-07:30

1 stop37h 35m

$1,477

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Thu 12/2

11:35-18:40

1 stop26h 05m

Seattle/Tacoma Intl

Fri 27/2

21:30-09:50

1 stop41h 20m

$1,483

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?

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 $1,350. 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 $1,416.

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 $1,604 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 $1,358 on momondo.

Can stopping save me money on Sydney to Seattle flights?

You could potentially save up to 1% 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 January 2026, prices for Sydney to Seattle flights are approximately 32% 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 26m

Direct flights

None
The fastest flight from Sydney to Seattle takes 21h 26m
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 21h 26m.

  • 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 $725Free cancellationRating
7.9
8,068 reviews
Search Delta flights
Virgin AustraliaPriceFrom $1,122Free cancellationRating
7.6
430 reviews
Search Virgin Australia flights
Alaska AirlinesPriceFrom $1,125Free cancellationRating
8.0
11,735 reviews
Search Alaska Airlines flights
Air CanadaPriceFrom $1,142Free cancellationRating
7.1
10,628 reviews
Search Air Canada flights
United AirlinesPriceFrom $1,186Free cancellationRating
7.4
9,171 reviews
Search United Airlines flights
Hawaiian AirlinesPriceFrom $1,223Free cancellationRating
7.8
2,828 reviews
Search Hawaiian Airlines flights
Qantas AirwaysPriceFrom $1,237Free cancellationRating
7.5
972 reviews
Search Qantas Airways flights
Philippine AirlinesPriceFrom $1,276Free cancellationRating
7.3
954 reviews
Search Philippine Airlines flights
American AirlinesPriceFrom $1,327Free cancellationRating
7.2
11,154 reviews
Search American Airlines flights
Asiana AirlinesPriceFrom $1,449Free cancellationRating
8.1
502 reviews
Search Asiana Airlines flights

Travelling to a place near Seattle?

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

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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