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Cheap flights from Sydney to Seattle from $746

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 15/3. 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

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Philippine Airlines Logo
10:15 - 20:05
SYD
-
SEA
26h 50m1 stop
Philippine Airlines Logo
23:10 - 08:00
SEA
-
SYD
39h 50m1 stop
$1,195Philippine Airlines
Thu, 4 Jun - Sun, 28 Jun
Philippine Airlines Logo
10:15 - 20:05
SYD
-
SEA
26h 50m1 stop
Philippine Airlines Logo
23:10 - 08:00
SEA
-
SYD
39h 50m1 stop
$1,208Philippine Airlines
Thu, 4 Jun - Sun, 28 Jun
Multiple Airlines Logo
06:20 - 22:51
SYD
-
SEA
35h 31m2 stops
Multiple Airlines Logo
09:55 - 22:15
SEA
-
SYD
41h 20m2 stops
$1,217Multiple Airlines
Tue, 10 Feb - Tue, 17 Feb
Philippine Airlines Logo
10:15 - 20:05
SYD
-
SEA
26h 50m1 stop
Philippine Airlines Logo
23:10 - 08:00
SEA
-
SYD
39h 50m1 stop
$1,237Philippine Airlines
Thu, 4 Jun - Sun, 28 Jun
Philippine Airlines Logo
10:15 - 20:05
SYD
-
SEA
26h 50m1 stop
Philippine Airlines Logo
23:10 - 08:00
SEA
-
SYD
39h 50m1 stop
$1,329Philippine Airlines
Thu, 4 Jun - Sun, 28 Jun
Multiple Airlines Logo
21:40 - 21:32
SYD
-
SEA
18h 52m1 stop
Multiple Airlines Logo
18:30 - 19:45
SEA
-
SYD
31h 15m2 stops
$1,371Multiple Airlines
Fri, 13 Feb - Sun, 15 Mar
Hawaiian Airlines Logo
21:40 - 05:23
SYD
-
SEA
25h 43m1 stop
Hawaiian Airlines Logo
07:00 - 19:45
SEA
-
SYD
18h 45m1 stop
$1,376Hawaiian Airlines
Sun, 8 Mar - Mon, 16 Mar
Asiana Airlines Logo
10:20 - 14:55
SYD
-
SEA
22h 35m1 stop
Asiana Airlines Logo
00:10 - 08:30
SEA
-
SYD
38h 20m1 stop
$1,397Asiana Airlines
Wed, 25 Mar - Sun, 29 Mar
Multiple Airlines Logo
21:40 - 05:04
SYD
-
SEA
26h 24m2 stops
Multiple Airlines Logo
15:45 - 19:45
SEA
-
SYD
33h 00m1 stop
$1,400Multiple Airlines
Fri, 6 Feb - Sun, 22 Feb
Multiple Airlines Logo
14:00 - 17:52
SYD
-
SEA
22h 52m2 stops
Multiple Airlines Logo
15:50 - 12:35
SEA
-
SYD
25h 45m2 stops
$1,403Multiple Airlines
Mon, 9 Feb - Mon, 16 Feb

Hawaiian Airlines flights from Sydney to Seattle

Our best Hawaiian Airlines deals on Sydney to Seattle flight tickets
Hawaiian Airlines
8 Mar
SYD21:40Sydney Kingsford Smith
25h 43m
1 stop
SEA05:23Seattle/Tacoma Intl
16 Mar
SEA07:00Seattle/Tacoma Intl
18h 45m
1 stop
SYD19:45Sydney Kingsford Smith
$1,376
Find similar
Hawaiian Airlines
6 Feb
SYD21:40Sydney Kingsford Smith
18h 22m
1 stop
SEA21:02Seattle/Tacoma Intl
22 Feb
SEA17:50Seattle/Tacoma Intl
30h 55m
1 stop
SYD19:45Sydney Kingsford Smith
$1,406
Find similar
Hawaiian Airlines
4 Jan
SYD21:40Sydney Kingsford Smith
19h 14m
1 stop
SEA21:54Seattle/Tacoma Intl
26 Feb
SEA07:00Seattle/Tacoma Intl
17h 45m
1 stop
SYD19:45Sydney Kingsford Smith
$3,713
Find similar

Air Canada flights from Sydney to Seattle

Our best Air Canada deals on Sydney to Seattle flight tickets
Air Canada
9 Feb
SYD11:20Sydney Kingsford Smith
16h 55m
1 stop
SEA09:15Seattle/Tacoma Intl
16 Feb
SEA20:00Seattle/Tacoma Intl
18h 35m
1 stop
SYD09:35Sydney Kingsford Smith
$1,494
Find similar
Air Canada
9 Feb
SYD09:00Sydney Kingsford Smith
19h 15m
2 stops
SEA09:15Seattle/Tacoma Intl
16 Feb
SEA09:55Seattle/Tacoma Intl
28h 40m
1 stop
SYD09:35Sydney Kingsford Smith
$1,516
Find similar
Air Canada
8 Feb
SYD11:20Sydney Kingsford Smith
26h 56m
1 stop
SEA19:16Seattle/Tacoma Intl
12 Feb
SEA09:55Seattle/Tacoma Intl
28h 40m
1 stop
SYD09:35Sydney Kingsford Smith
$1,562
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 28 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

Thu 4/6

10:15-20:05

1 stop26h 50m

Seattle/Tacoma Intl

Sun 28/6

23:10-08:00

1 stop39h 50m

$1,195

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Thu 4/6

10:15-20:05

1 stop26h 50m

Seattle/Tacoma Intl

Sun 28/6

23:10-08:00

1 stop39h 50m

$1,208

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Tue 10/2

06:20-22:51

2 stops35h 31m

Seattle/Tacoma Intl

Tue 17/2

09:55-22:15

2 stops41h 20m

$1,217

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Thu 4/6

10:15-20:05

1 stop26h 50m

Seattle/Tacoma Intl

Sun 28/6

23:10-08:00

1 stop39h 50m

$1,237

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Thu 4/6

10:15-20:05

1 stop26h 50m

Seattle/Tacoma Intl

Sun 28/6

23:10-08:00

1 stop39h 50m

$1,329

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Fri 13/2

21:40-21:32

1 stop18h 52m

Seattle/Tacoma Intl

Sun 15/3

18:30-19:45

2 stops31h 15m

$1,370

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Sun 8/3

21:40-05:23

1 stop25h 43m

Seattle/Tacoma Intl

Mon 16/3

07:00-19:45

1 stop18h 45m

$1,376

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 25/3

10:20-14:55

1 stop22h 35m

Seattle/Tacoma Intl

Sun 29/3

00:10-08:30

1 stop38h 20m

$1,397

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Fri 6/2

21:40-05:04

2 stops26h 24m

Seattle/Tacoma Intl

Sun 22/2

15:45-19:45

1 stop33h 00m

$1,400

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Mon 9/2

14:00-17:52

2 stops22h 52m

Seattle/Tacoma Intl

Mon 16/2

15:50-12:35

2 stops25h 45m

$1,403

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 $1,351. 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 $1,417.

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 $1,531. 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 $1,759.

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 $1,459. 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 $1,780.

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 $1,610 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 $1,353 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

20h 49m

Direct flights

None
The fastest flight from Sydney to Seattle takes 20h 49m
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 20h 49m.

  • 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 $1,118Free cancellationRating
7.6
430 reviews
Search Virgin Australia flights
Alaska AirlinesPriceFrom $1,121Free cancellationRating
8.0
11,560 reviews
Search Alaska Airlines flights
DeltaPriceFrom $1,129Free cancellationRating
7.9
8,013 reviews
Search Delta flights
Air CanadaPriceFrom $1,139Free cancellationRating
7.1
10,563 reviews
Search Air Canada flights
United AirlinesPriceFrom $1,182Free cancellationRating
7.4
9,118 reviews
Search United Airlines flights
Hawaiian AirlinesPriceFrom $1,218Free cancellationRating
7.8
2,821 reviews
Search Hawaiian Airlines flights
Qantas AirwaysPriceFrom $1,233Free cancellationRating
7.5
957 reviews
Search Qantas Airways flights
American AirlinesPriceFrom $1,258Free cancellationRating
7.2
11,071 reviews
Search American Airlines flights
Philippine AirlinesPriceFrom $1,271Free cancellationRating
7.3
945 reviews
Search Philippine Airlines flights
Singapore AirlinesPriceFrom $1,413Free cancellationRating
8.1
1,421 reviews
Search Singapore 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

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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