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Cheap flights from Sydney to Seattle from $863

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 19/1. 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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Hawaiian Airlines Logo
21:40 - 23:21SYD-SEA
20h 41m1 stop
Hawaiian Airlines Logo
18:30 - 19:45SEA-SYD
30h 15m1 stop
$1,236Hawaiian Airlines
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Thu, 13 Nov - Sun, 16 Nov
Air Canada Logo
11:20 - 19:16SYD-SEA
26h 56m1 stop
Air Canada Logo
20:00 - 06:55SEA-SYD
39h 55m1 stop
$1,246Air Canada
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Wed, 3 Dec - Wed, 10 Dec
Multiple Airlines Logo
06:20 - 14:31SYD-SEA
27h 11m2 stops
Multiple Airlines Logo
20:00 - 06:55SEA-SYD
39h 55m1 stop
$1,255Multiple Airlines
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Wed, 3 Dec - Wed, 10 Dec
Air Canada Logo
11:20 - 09:31SYD-SEA
17h 11m1 stop
Air Canada Logo
15:40 - 09:35SEA-SYD
22h 55m1 stop
$1,310Air Canada
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Thu, 27 Nov - Fri, 12 Dec
United Airlines Logo
11:20 - 21:00SYD-SEA
28h 40m2 stops
United Airlines Logo
13:35 - 09:15SEA-SYD
24h 40m1 stop
$1,319United Airlines
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Thu, 11 Dec - Mon, 29 Dec
United Airlines Logo
12:10 - 16:15SYD-SEA
23h 05m1 stop
United Airlines Logo
12:30 - 09:05SEA-SYD
25h 35m2 stops
$1,393United Airlines
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Thu, 20 Nov - Fri, 28 Nov
Asiana Airlines Logo
10:20 - 14:55SYD-SEA
22h 35m1 stop
Asiana Airlines Logo
00:10 - 08:20SEA-SYD
38h 10m1 stop
$1,474Asiana Airlines
Find Deal
Wed, 11 Mar - Sat, 14 Mar
Asiana Airlines Logo
10:20 - 14:55SYD-SEA
22h 35m1 stop
Asiana Airlines Logo
00:10 - 08:20SEA-SYD
38h 10m1 stop
$1,478Asiana Airlines
Find Deal
Wed, 11 Mar - Sat, 14 Mar
Delta Logo
10:40 - 10:45SYD-SEA
19h 05m1 stop
Delta Logo
13:45 - 06:50SEA-SYD
22h 05m1 stop
$1,724Delta
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Thu, 11 Dec - Thu, 1 Jan
Delta Logo
10:40 - 00:20SYD-SEA
32h 40m2 stops
Delta Logo
05:25 - 06:50SEA-SYD
30h 25m2 stops
$1,994Delta
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Thu, 11 Dec - Thu, 1 Jan

Asiana Airlines flights from Sydney to Seattle

Our best Asiana Airlines deals on Sydney to Seattle flight tickets
Asiana Airlines
11 Mar
SYD10:20Sydney Kingsford Smith
22h 35m
1 stop
SEA14:55Seattle/Tacoma Intl
14 Mar
SEA00:10Seattle/Tacoma Intl
38h 10m
1 stop
SYD08:20Sydney Kingsford Smith
$1,474
Find similar
Asiana Airlines
11 Mar
SYD10:20Sydney Kingsford Smith
22h 35m
1 stop
SEA14:55Seattle/Tacoma Intl
14 Mar
SEA00:10Seattle/Tacoma Intl
38h 10m
1 stop
SYD08:20Sydney Kingsford Smith
$1,478
Find similar
Asiana Airlines
20 Nov
SYD10:20Sydney Kingsford Smith
22h 35m
1 stop
SEA13:55Seattle/Tacoma Intl
4 Dec
SEA00:10Seattle/Tacoma Intl
37h 10m
1 stop
SYD08:20Sydney Kingsford Smith
$1,816
Find similar

Philippine Airlines flights from Sydney to Seattle

Our best Philippine Airlines deals on Sydney to Seattle flight tickets
Philippine Airlines
11 Mar
SYD11:35Sydney Kingsford Smith
26h 05m
1 stop
SEA19:40Seattle/Tacoma Intl
15 Mar
SEA22:30Seattle/Tacoma Intl
41h 20m
1 stop
SYD09:50Sydney Kingsford Smith
$1,568
Find similar
Philippine Airlines
11 Mar
SYD11:35Sydney Kingsford Smith
26h 05m
1 stop
SEA19:40Seattle/Tacoma Intl
15 Mar
SEA22:30Seattle/Tacoma Intl
41h 20m
1 stop
SYD09:50Sydney Kingsford Smith
$1,572
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 30 October 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 13/11

21:40-23:21

1 stop20h 41m

Seattle/Tacoma Intl

Sun 16/11

18:30-19:45

1 stop30h 15m

$1,236

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 3/12

11:20-19:16

1 stop26h 56m

Seattle/Tacoma Intl

Wed 10/12

20:00-06:55

1 stop39h 55m

$1,246

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 3/12

06:20-14:31

2 stops27h 11m

Seattle/Tacoma Intl

Wed 10/12

20:00-06:55

1 stop39h 55m

$1,255

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Thu 27/11

11:20-09:31

1 stop17h 11m

Seattle/Tacoma Intl

Fri 12/12

15:40-09:35

1 stop22h 55m

$1,310

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Thu 11/12

11:20-21:00

2 stops28h 40m

Seattle/Tacoma Intl

Mon 29/12

13:35-09:15

1 stop24h 40m

$1,319

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Thu 20/11

12:10-16:15

1 stop23h 05m

Seattle/Tacoma Intl

Fri 28/11

12:30-09:05

2 stops25h 35m

$1,393

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 11/3

10:20-14:55

1 stop22h 35m

Seattle/Tacoma Intl

Sat 14/3

00:10-08:20

1 stop38h 10m

$1,474

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 11/3

10:20-14:55

1 stop22h 35m

Seattle/Tacoma Intl

Sat 14/3

00:10-08:20

1 stop38h 10m

$1,478

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Thu 11/12

10:40-10:45

1 stop19h 05m

Seattle/Tacoma Intl

Thu 1/1

13:45-06:50

1 stop22h 05m

$1,724

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Thu 11/12

10:40-00:20

2 stops32h 40m

Seattle/Tacoma Intl

Thu 1/1

05:25-06:50

2 stops30h 25m

$1,994

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 $1,383. 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 $1,478.

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 $1,560. 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 $1,793.

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 $1,486. 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 $1,814.

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 $1,656 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 $1,355 on momondo.

How have Sydney to Seattle flight prices changed over time?

As of October 2025, prices for Sydney to Seattle flights are approximately 28% 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

Direct flights

None
There are no direct flights from Sydney to Seattle. There are no popular flight routes from Sydney to Seattle.
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  • 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 17h 11m.

  • 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 $1,139Free cancellationRating
7.6
422 reviews
Search Virgin Australia flights
Alaska AirlinesPriceFrom $1,142Free cancellationRating
8.0
11,214 reviews
Search Alaska Airlines flights
DeltaPriceFrom $1,151Free cancellationRating
7.9
7,993 reviews
Search Delta flights
Air CanadaPriceFrom $1,171Free cancellationRating
7.1
10,378 reviews
Search Air Canada flights
United AirlinesPriceFrom $1,204Free cancellationRating
7.4
8,998 reviews
Search United Airlines flights
Hawaiian AirlinesPriceFrom $1,231Free cancellationRating
7.8
2,797 reviews
Search Hawaiian Airlines flights
Qantas AirwaysPriceFrom $1,256Free cancellationRating
7.5
925 reviews
Search Qantas Airways flights
Philippine AirlinesPriceFrom $1,317Free cancellationRating
7.3
929 reviews
Search Philippine Airlines flights
Air New ZealandPriceFrom $1,361Free cancellationRating
8.0
520 reviews
Search Air New Zealand flights
Singapore AirlinesPriceFrom $1,440Free cancellationRating
8.1
1,388 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

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