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Look for other cheap flights to Seattle/Tacoma Intl

$794 Cheap flights to Seattle

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight to Seattle departing on 28/8. 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

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Find the cheapest flights from Australia to Seattle

Cheap return flights

Enter your travel dates to find the best prices.
Air Canada Logo
09:20 - 18:32
SYD
-
SEA
26h 12m
1 stop
Air Canada Logo
10:45 - 07:20
SEA
-
SYD
27h 35m
1 stop
$1,154Air Canada
Mon, 27 Jul - Tue, 11 Aug
Multiple Airlines Logo
09:20 - 18:32
SYD
-
SEA
26h 12m
1 stop
Multiple Airlines Logo
19:20 - 11:40
SEA
-
SYD
23h 20m
2 stops
$1,176Multiple Airlines
Mon, 27 Jul - Tue, 11 Aug
Air Canada Logo
09:20 - 18:32
SYD
-
SEA
26h 12m
1 stop
Air Canada Logo
15:00 - 07:20
SEA
-
SYD
23h 20m
1 stop
$1,198Air Canada
Mon, 27 Jul - Tue, 11 Aug
United Airlines Logo
09:30 - 23:10
MEL
-
SEA
30h 40m
2 stops
United Airlines Logo
17:20 - 08:15
SEA
-
MEL
21h 55m
1 stop
$1,300United Airlines
Fri, 7 Aug - Sat, 22 Aug
United Airlines Logo
10:55 - 16:20
MEL
-
SEA
22h 25m
1 stop
United Airlines Logo
08:45 - 08:15
SEA
-
MEL
30h 30m
1 stop
$1,302United Airlines
Fri, 10 Jul - Sat, 25 Jul
Qantas Airways Logo
09:45 - 12:48
MEL
-
SEA
20h 03m
1 stop
Qantas Airways Logo
17:10 - 06:45
SEA
-
MEL
20h 35m
1 stop
$1,478Qantas Airways
Tue, 21 Jul - Fri, 31 Jul
Qantas Airways Logo
12:40 - 20:56
ADL
-
SEA
24h 46m
2 stops
Qantas Airways Logo
17:10 - 11:55
SEA
-
ADL
26h 15m
2 stops
$1,737Qantas Airways
Tue, 21 Jul - Wed, 5 Aug
Virgin Australia Logo
06:05 - 16:20
ADL
-
SEA
26h 45m
2 stops
Virgin Australia Logo
17:04 - 10:05
SEA
-
ADL
24h 31m
2 stops
$1,849Virgin Australia
Tue, 7 Jul - Fri, 31 Jul
Virgin Australia Logo
06:05 - 20:53
ADL
-
SEA
31h 18m
2 stops
Virgin Australia Logo
17:04 - 10:05
SEA
-
ADL
24h 31m
2 stops
$1,862Virgin Australia
Tue, 7 Jul - Fri, 31 Jul
Singapore Airlines Logo
18:15 - 08:45
CNS
-
SEA
55h 30m
1 stop
Singapore Airlines Logo
10:15 - 17:00
SEA
-
CNS
37h 45m
1 stop
$2,833Singapore Airlines
Sun, 19 Jul - Sun, 26 Jul

momondo Fare Finder

 
Locate flights to Seattle/Tacoma Intl that fit your budget, with regularly updated fares and availability. In the last 7 days, momondo users made a total of 78,305 searches and data was last updated on 8 June 2026.
Use the filters below to find and compare flights to Seattle that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest return flight

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Mon 27/7

09:20-18:32

1 stop26h 12m

Seattle/Tacoma Intl

Tue 11/8

10:45-07:20

1 stop27h 35m

$1,154

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Mon 27/7

09:20-18:32

1 stop26h 12m

Seattle/Tacoma Intl

Tue 11/8

19:20-11:40

2 stops23h 20m

$1,176

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Mon 27/7

09:20-18:32

1 stop26h 12m

Seattle/Tacoma Intl

Tue 11/8

15:00-07:20

1 stop23h 20m

$1,198

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Fri 7/8

09:30-23:10

2 stops30h 40m

Seattle/Tacoma Intl

Sat 22/8

17:20-08:15

1 stop21h 55m

$1,300

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Fri 10/7

10:55-16:20

1 stop22h 25m

Seattle/Tacoma Intl

Sat 25/7

08:45-08:15

1 stop30h 30m

$1,302
Fastest return journey

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Tue 21/7

09:45-12:48

1 stop20h 03m

Seattle/Tacoma Intl

Fri 31/7

17:10-06:45

1 stop20h 35m

$1,478

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 21/7

12:40-20:56

2 stops24h 46m

Seattle/Tacoma Intl

Wed 5/8

17:10-11:55

2 stops26h 15m

$1,737

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 7/7

06:05-16:20

2 stops26h 45m

Seattle/Tacoma Intl

Fri 31/7

17:04-10:05

2 stops24h 31m

$1,849

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 7/7

06:05-20:53

2 stops31h 18m

Seattle/Tacoma Intl

Fri 31/7

17:04-10:05

2 stops24h 31m

$1,862

CairnsSeattle

CNS - SEA

CNSSEA

Cairns

Sun 19/7

18:15-08:45

1 stop55h 30m

Seattle/Tacoma Intl

Sun 26/7

10:15-17:00

1 stop37h 45m

$2,833

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

Seattle flights insights and trends

Explore insights for your Seattle flight to craft the best travel plan

What is the cheapest month to fly to Seattle?

The month of September is, on average, the cheapest month to fly to Seattle from Australia, with most prices found around $1,225. If you are unable to visit Seattle during the month of September, then departing from Australia during the month August is also very affordable. Most momondo users find prices during this month for around $1,231.

How far in advance should I book a flight 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 $1,460 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 Australia for as low as $981 on momondo.

Cheapest flights to Seattle/Tacoma Intl

Find the cheapest flights to Seattle/Tacoma Intl from your nearest city or airport

Cheap Seattle flight deals and tips

Summary info about Seattle flight prices, duration and airlines

Best One-Way Price

$794

Best Round-Trip Price

$1,154

Fastest flight time

19h 27m

Popular in

April
The best one-way flight price to Seattle from Australia in the last 5 days is $794 (Melbourne to Seattle/Tacoma Intl).
Search Deals
The best round-trip flight price to Seattle from Australia in the last 5 days is $1,154 (Sydney Kingsford Smith to Seattle/Tacoma Intl).
Search Deals
The fastest flight to Seattle from Australia takes 19h 27m (Melbourne to Seattle/Tacoma Intl).
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April has the highest demand for flights to Seattle, with a 4% price increase on average.
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Frequently asked questions about flying to Seattle

What is there to do in Seattle when it’s raining?

When planning your flight to Seattle, it is important to be aware that some months are not as ideal as others. Specifically, the months of January, November, or December could carry a higher chance of rain, as Seattle sees up to 5.1 inches (130 mm) or more. There are still things to do in Seattle even when it's raining, but be aware that rain is highly probable in the area. For those looking to get out of the rain and do a little shopping, check out Seattle Waterfront.

When is it best to fly to Seattle to go sightseeing?

The city of Seattle has many sights to see while visiting. Many tourists find it ideal to go sightseeing when the weather is warmer, but not blistering. Consider booking your flight to Seattle for October, when temperatures are a bit higher and the chance of rain is relatively low. Many travellers find it worthwhile to visit Space Needle and Seattle Waterfront.

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

The ideal time to book your flight to Seattle is 69 days in advance, when prices tend to average $1,460.

Is there an alternative airport near Seattle?

Seattle Lake Union Spb Airport, Seattle King County/Boeing Airport, Kenmore Air Harbor Airport, Everett Paine Field Airport or Lopez Island Airport can be an alternative airport used for travel to Seattle.

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

Prices for flights to Seattle/Tacoma Intl Airport are refreshed on a daily basis.

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

As of June 2026, there are 14 operators available to choose from for flights to Seattle/Tacoma Intl Airport.

How old do you have to be to fly 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 stopovers. It is recommended that you verify with the airline you are booking with for travel 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 licence 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.

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 to Seattle?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight to Seattle. momondo saves you time and could save you money on your trip.

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

momondo does allow users to show only those flights to Seattle which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights to Seattle?

momondo helps you find the best flight to Seattle by providing filters to narrow your choice of flights to those matching your criteria. You can select fights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight 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 and alert you when they change.

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