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Cheap flights from Sydney to Seattle from $781

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 10/2. 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
06:20 - 22:06
SYD
-
SEA
34h 46m2 stops
Multiple Airlines Logo
05:50 - 22:15
SEA
-
SYD
45h 25m2 stops
$1,187Multiple Airlines
Sun, 25 Jan - Sun, 1 Feb
Multiple Airlines Logo
06:20 - 22:06
SYD
-
SEA
34h 46m2 stops
Multiple Airlines Logo
05:50 - 20:45
SEA
-
SYD
43h 55m2 stops
$1,239Multiple Airlines
Sat, 24 Jan - Sat, 31 Jan
Multiple Airlines Logo
06:20 - 09:31
SYD
-
SEA
22h 11m2 stops
Multiple Airlines Logo
09:55 - 16:15
SEA
-
SYD
35h 20m2 stops
$1,370Multiple Airlines
Sat, 24 Jan - Sat, 31 Jan
Multiple Airlines Logo
06:20 - 09:31
SYD
-
SEA
21h 11m2 stops
Multiple Airlines Logo
09:55 - 19:35
SEA
-
SYD
40h 40m2 stops
$1,383Multiple Airlines
Wed, 18 Mar - Tue, 5 May
Multiple Airlines Logo
06:20 - 22:06
SYD
-
SEA
34h 46m2 stops
Multiple Airlines Logo
20:00 - 17:40
SEA
-
SYD
26h 40m2 stops
$1,403Multiple Airlines
Sun, 25 Jan - Sun, 1 Feb
Multiple Airlines Logo
12:55 - 12:29
SYD
-
SEA
42h 34m2 stops
Multiple Airlines Logo
15:57 - 17:40
SEA
-
SYD
30h 43m2 stops
$1,410Multiple Airlines
Wed, 21 Jan - Wed, 28 Jan
Asiana Airlines Logo
10:20 - 14:55
SYD
-
SEA
22h 35m1 stop
Asiana Airlines Logo
00:10 - 07:30
SEA
-
SYD
38h 20m1 stop
$1,418Asiana Airlines
Wed, 18 Mar - Mon, 4 May
Asiana Airlines Logo
09:30 - 14:55
SYD
-
SEA
22h 25m1 stop
Asiana Airlines Logo
00:10 - 07:30
SEA
-
SYD
38h 20m1 stop
$1,473Asiana Airlines
Sun, 31 May - Fri, 26 Jun
Asiana Airlines Logo
09:30 - 14:55
SYD
-
SEA
22h 25m1 stop
Asiana Airlines Logo
00:10 - 07:30
SEA
-
SYD
38h 20m1 stop
$1,475Asiana Airlines
Sun, 31 May - Fri, 26 Jun
Multiple Airlines Logo
13:15 - 18:54
SYD
-
SEA
22h 39m2 stops
Multiple Airlines Logo
17:43 - 11:45
SEA
-
SYD
25h 02m2 stops
$1,499Multiple Airlines
Wed, 15 Apr - Fri, 15 May

Air Canada flights from Sydney to Seattle

Our best Air Canada deals on Sydney to Seattle flight tickets
Air Canada
19 Jan
SYD16:00Sydney Kingsford Smith
36h 15m
1 stop
SEA09:15Seattle/Tacoma Intl
2 Feb
SEA20:00Seattle/Tacoma Intl
18h 35m
1 stop
SYD09:35Sydney Kingsford Smith
$1,538
Find similar
Air Canada
21 Jan
SYD08:30Sydney Kingsford Smith
19h 45m
2 stops
SEA09:15Seattle/Tacoma Intl
28 Jan
SEA20:00Seattle/Tacoma Intl
18h 35m
1 stop
SYD09:35Sydney Kingsford Smith
$1,603
Find similar
Air Canada
5 Apr
SYD09:20Sydney Kingsford Smith
17h 13m
1 stop
SEA09:33Seattle/Tacoma Intl
21 Apr
SEA20:00Seattle/Tacoma Intl
18h 20m
1 stop
SYD07:20Sydney Kingsford Smith
$1,615
Find similar

Asiana Airlines flights from Sydney to Seattle

Our best Asiana Airlines deals on Sydney to Seattle flight tickets
Asiana Airlines
18 Mar
SYD10:20Sydney Kingsford Smith
22h 35m
1 stop
SEA14:55Seattle/Tacoma Intl
4 May
SEA00:10Seattle/Tacoma Intl
38h 20m
1 stop
SYD07:30Sydney Kingsford Smith
$1,418
Find similar
Asiana Airlines
31 May
SYD09:30Sydney Kingsford Smith
22h 25m
1 stop
SEA14:55Seattle/Tacoma Intl
26 June
SEA00:10Seattle/Tacoma Intl
38h 20m
1 stop
SYD07:30Sydney Kingsford Smith
$1,473
Find similar
Asiana Airlines
31 May
SYD09:30Sydney Kingsford Smith
22h 25m
1 stop
SEA14:55Seattle/Tacoma Intl
26 June
SEA00:10Seattle/Tacoma Intl
38h 20m
1 stop
SYD07:30Sydney Kingsford Smith
$1,475
Find similar

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 December 2025.
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

Sun 25/1

06:20-22:06

2 stops34h 46m

Seattle/Tacoma Intl

Sun 1/2

05:50-22:15

2 stops45h 25m

$1,187

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Sat 24/1

06:20-22:06

2 stops34h 46m

Seattle/Tacoma Intl

Sat 31/1

05:50-20:45

2 stops43h 55m

$1,239

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Sat 24/1

06:20-09:31

2 stops22h 11m

Seattle/Tacoma Intl

Sat 31/1

09:55-16:15

2 stops35h 20m

$1,370

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 18/3

06:20-09:31

2 stops21h 11m

Seattle/Tacoma Intl

Tue 5/5

09:55-19:35

2 stops40h 40m

$1,383

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Sun 25/1

06:20-22:06

2 stops34h 46m

Seattle/Tacoma Intl

Sun 1/2

20:00-17:40

2 stops26h 40m

$1,403

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 21/1

12:55-12:29

2 stops42h 34m

Seattle/Tacoma Intl

Wed 28/1

15:57-17:40

2 stops30h 43m

$1,410

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 18/3

10:20-14:55

1 stop22h 35m

Seattle/Tacoma Intl

Mon 4/5

00:10-07:30

1 stop38h 20m

$1,418

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Sun 31/5

09:30-14:55

1 stop22h 25m

Seattle/Tacoma Intl

Fri 26/6

00:10-07:30

1 stop38h 20m

$1,473

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Sun 31/5

09:30-14:55

1 stop22h 25m

Seattle/Tacoma Intl

Fri 26/6

00:10-07:30

1 stop38h 20m

$1,475

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 15/4

13:15-18:54

2 stops22h 39m

Seattle/Tacoma Intl

Fri 15/5

17:43-11:45

2 stops25h 02m

$1,499

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 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 $1,364. 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 $1,430.

What is the cheapest day to depart on your flight to Seattle?

The cheapest day to depart from Sydney to Seattle is on a Thursday. Travellers who choose to depart for Seattle on a Thursday will often find tickets for as low as $1,545. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Sydney to Seattle for around $1,776.

What is the cheapest time of day to depart on your flight to Seattle?

According to our data, the cheapest time of day to fly to Seattle is at midday. momondo users have found flights departing from Sydney to Seattle at midday for as low as $1,472. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Seattle is in the afternoon when prices are around $1,797.

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 $1,626 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 $1,365 on momondo.

Can stopping save me money on Sydney to Seattle flights?

You could potentially save up to 5% 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 December 2025, prices for Sydney to Seattle flights are approximately 55% 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

19h 14m

Direct flights

None
The fastest flight from Sydney to Seattle takes 19h 14m
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 19h 14m.

  • 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
Virgin AustraliaPriceFrom $1,129Free cancellationRating
7.6
426 reviews
Search Virgin Australia flights
Alaska AirlinesPriceFrom $1,132Free cancellationRating
8.0
11,431 reviews
Search Alaska Airlines flights
DeltaPriceFrom $1,140Free cancellationRating
7.9
8,005 reviews
Search Delta flights
Air CanadaPriceFrom $1,150Free cancellationRating
7.1
10,514 reviews
Search Air Canada flights
United AirlinesPriceFrom $1,193Free cancellationRating
7.4
9,095 reviews
Search United Airlines flights
Hawaiian AirlinesPriceFrom $1,230Free cancellationRating
7.8
2,817 reviews
Search Hawaiian Airlines flights
Qantas AirwaysPriceFrom $1,244Free cancellationRating
7.5
947 reviews
Search Qantas Airways flights
American AirlinesPriceFrom $1,270Free cancellationRating
7.2
11,049 reviews
Search American Airlines flights
Philippine AirlinesPriceFrom $1,283Free cancellationRating
7.3
941 reviews
Search Philippine Airlines flights
Air New ZealandPriceFrom $1,348Free cancellationRating
8.0
552 reviews
Search Air New Zealand 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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