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Cheap flights from Australia to Seattle from $563

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Australia to Seattle departing on 8/28. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Australia to Seattle

Recent round-trip flight deals from Australia to Seattle

Enter your travel dates to find the best prices.
Multiple Airlines Logo
1:15 pm - 10:59 pm
SYD
-
SEA
26h 44m
2 stops
Multiple Airlines Logo
5:59 pm - 11:50 am
SEA
-
SYD
24h 51m
2 stops
$880Multiple Airlines
Wed, Aug 26 - Mon, Sep 14
Multiple Airlines Logo
1:15 pm - 9:19 am
SYD
-
SEA
37h 04m
3 stops
Multiple Airlines Logo
11:06 am - 10:25 pm
SEA
-
SYD
42h 19m
2 stops
$897Multiple Airlines
Thu, Sep 3 - Thu, Sep 10
United Airlines Logo
9:30 am - 5:42 pm
MEL
-
SEA
25h 12m
2 stops
United Airlines Logo
2:34 pm - 7:30 am
SEA
-
MEL
23h 56m
2 stops
$920United Airlines
Fri, Aug 14 - Fri, Aug 28
United Airlines Logo
10:55 am - 6:47 pm
MEL
-
SEA
24h 52m
1 stop
United Airlines Logo
7:00 am - 8:15 am
SEA
-
MEL
32h 15m
2 stops
$923United Airlines
Sun, Aug 9 - Sat, Aug 22
United Airlines Logo
10:55 am - 9:03 pm
MEL
-
SEA
27h 08m
1 stop
United Airlines Logo
9:05 am - 8:15 am
SEA
-
MEL
30h 10m
1 stop
$924United Airlines
Sat, Aug 1 - Mon, Aug 31
British Airways Logo
12:00 pm - 11:39 pm
SYD
-
SEA
28h 39m
1 stop
British Airways Logo
7:00 am - 7:05 am
SEA
-
SYD
31h 05m
1 stop
$942British Airways
Mon, Jul 27 - Sun, Aug 9
American Airlines Logo
9:10 am - 11:21 pm
SYD
-
SEA
31h 11m
1 stop
American Airlines Logo
3:47 pm - 6:55 am
SEA
-
SYD
22h 08m
1 stop
$951American Airlines
Mon, Aug 17 - Tue, Sep 1
American Airlines Logo
9:10 am - 11:21 pm
SYD
-
SEA
31h 11m
1 stop
American Airlines Logo
3:42 pm - 6:55 am
SEA
-
SYD
22h 13m
1 stop
$952American Airlines
Wed, Aug 26 - Mon, Sep 14
Air Canada Logo
10:15 am - 10:05 am
BNE
-
SEA
16h 50m
1 stop
Air Canada Logo
3:00 pm - 7:05 am
SEA
-
BNE
23h 05m
1 stop
$1,048Air Canada
Thu, Aug 6 - Mon, Aug 10
Air Canada Logo
10:15 am - 6:32 pm
BNE
-
SEA
25h 17m
1 stop
Air Canada Logo
3:00 pm - 7:05 am
SEA
-
BNE
23h 05m
1 stop
$1,074Air Canada
Thu, Aug 6 - Mon, Aug 10

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Delta flights from Australia to Seattle

Our best Delta deals on Australia to Seattle flight tickets
Delta
Jul 22
MEL10:00 amMelbourne
23h 28m
2 stops
SEA4:28 pmSeattle/Tacoma Intl
Aug 3
SEA9:40 amSeattle/Tacoma Intl
29h 10m
2 stops
MEL7:50 amMelbourne
$957
Delta
Aug 7
MEL10:00 amMelbourne
21h 50m
1 stop
SEA2:50 pmSeattle/Tacoma Intl
Aug 24
SEA1:25 pmSeattle/Tacoma Intl
25h 25m
2 stops
MEL7:50 amMelbourne
$960
Delta
Jul 27
SYD9:15 amSydney Kingsford Smith
29h 45m
2 stops
SEA10:00 pmSeattle/Tacoma Intl
Aug 9
SEA5:45 amSeattle/Tacoma Intl
32h 05m
2 stops
SYD6:50 amSydney Kingsford Smith
$962

Qantas Airways flights from Australia to Seattle

Our best Qantas Airways deals on Australia to Seattle flight tickets
Qantas Airways
Aug 16
SYD9:10 amSydney Kingsford Smith
23h 23m
1 stop
SEA3:33 pmSeattle/Tacoma Intl
Aug 31
SEA7:10 pmSeattle/Tacoma Intl
19h 20m
1 stop
SYD7:30 amSydney Kingsford Smith
$988
Qantas Airways
Aug 14
SYD9:10 amSydney Kingsford Smith
29h 48m
1 stop
SEA9:58 pmSeattle/Tacoma Intl
Aug 29
SEA5:32 pmSeattle/Tacoma Intl
20h 33m
1 stop
SYD7:05 amSydney Kingsford Smith
$1,007
Qantas Airways
Sep 5
SYD9:10 amSydney Kingsford Smith
31h 19m
1 stop
SEA11:29 pmSeattle/Tacoma Intl
Sep 21
SEA5:02 pmSeattle/Tacoma Intl
21h 03m
1 stop
SYD7:05 amSydney Kingsford Smith
$1,039

momondo Fare Finder

 
Customize your flight search to find flights from Australia 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 832,500 searches. Data last updated July 20, 2026.
Use the filters below to find and compare flights from Australia to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 8/26

1:15 pm-10:59 pm

2 stops26h 44m

Seattle/Tacoma Intl

Mon 9/14

5:59 pm-11:50 am

2 stops24h 51m

$880

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Thu 9/3

1:15 pm-9:19 am

3 stops37h 04m

Seattle/Tacoma Intl

Thu 9/10

11:06 am-10:25 pm

2 stops42h 19m

$897

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Fri 8/14

9:30 am-5:42 pm

2 stops25h 12m

Seattle/Tacoma Intl

Fri 8/28

2:34 pm-7:30 am

2 stops23h 56m

$920

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Sun 8/9

10:55 am-6:47 pm

1 stop24h 52m

Seattle/Tacoma Intl

Sat 8/22

7:00 am-8:15 am

2 stops32h 15m

$923

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Sat 8/1

10:55 am-9:03 pm

1 stop27h 08m

Seattle/Tacoma Intl

Mon 8/31

9:05 am-8:15 am

1 stop30h 10m

$924

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Mon 7/27

12:00 pm-11:39 pm

1 stop28h 39m

Seattle/Tacoma Intl

Sun 8/9

7:00 am-7:05 am

1 stop31h 05m

$942

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Mon 8/17

9:10 am-11:21 pm

1 stop31h 11m

Seattle/Tacoma Intl

Tue 9/1

3:47 pm-6:55 am

1 stop22h 08m

$951

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 8/26

9:10 am-11:21 pm

1 stop31h 11m

Seattle/Tacoma Intl

Mon 9/14

3:42 pm-6:55 am

1 stop22h 13m

$952
Quickest round-trip

BrisbaneSeattle

BNE - SEA

BNESEA

Brisbane

Thu 8/6

10:15 am-10:05 am

1 stop16h 50m

Seattle/Tacoma Intl

Mon 8/10

3:00 pm-7:05 am

1 stop23h 05m

$1,048

BrisbaneSeattle

BNE - SEA

BNESEA

Brisbane

Thu 8/6

10:15 am-6:32 pm

1 stop25h 17m

Seattle/Tacoma Intl

Mon 8/10

3:00 pm-7:05 am

1 stop23h 05m

$1,074

Flights are sorted by cheapest round-trip 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 Australia 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?

In general, March is the cheapest month to fly from Australia to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $876. If you don’t want to visit Seattle in March, then you should wait until October to fly from Australia, when ticket prices are also cheap, with an average price of $947.

How far in advance should I book a flight from Australia to Seattle?

You are more likely to see cheaper flights to Seattle from Australia when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $1,066 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Australia for as low as $660 on momondo.

Can stopping save me money on Australia to Seattle flights?

You could potentially save up to 13% on your flight if you consider stops on a Australia to Seattle flight.

Cheap Australia to Seattle flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Australia to Seattle

Fastest flight time

20h 20m

Direct flights

None
The fastest flight from Australia to Seattle takes 20h 20m
There are no direct flights from Australia to Seattle. There are no popular flight routes from Australia to Seattle.
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Frequently asked questions about flying from Australia to Seattle

  • When did momondo last update prices for flights from Australia to Seattle/Tacoma Intl Airport?

    Prices for flights from Australia to Seattle/Tacoma Intl Airport are updated daily.

  • How many operators does momondo search for flights from Australia to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from Australia to Seattle/Tacoma Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Australia to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The travel and health documents you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Australia to Seattle

Compare and see reviews for airlines that fly from Australia to Seattle with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $752Free CancellationRating
7.1
11,361 reviews
Search Air Canada flights
United AirlinesPriceFrom $778Free CancellationRating
7.4
10,015 reviews
Search United Airlines flights

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
SeaTac
Ocean Shores
Renton
Olympia
Lynnwood
Redmond
Kent
Lakewood
Tukwila
Puyallup
Fife
Federal Way
Cle Elum
Marysville
Kirkland
Centralia
Shoreline
Lacey

Why use momondo?

Why should I use momondo to find a flight deal from Australia to Seattle?

It is quick and easy to find Australia to Seattle flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Seattle that suits you.

Can I find flights from Australia to Seattle with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Seattle from Australia with this policy.

How can momondo help me find flights from Australia 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 Australia to Seattle.

I’m not ready to book a flight from Australia to Seattle right now. Can momondo alert me if prices change?

Price alerts on flights to Seattle from Australia are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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