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Look for other cheap flights to Seattle/Tacoma Intl

$786 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 20/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Australia to Seattle

Cheap return flights

Enter your travel dates to find the best prices.
United Airlines Logo
10:55 - 20:53
MEL
-
SEA
26h 58m
1 stop
United Airlines Logo
17:20 - 08:15
SEA
-
MEL
21h 55m
1 stop
$1,289United Airlines
Wed, 3 Jun - Wed, 10 Jun
United Airlines Logo
10:55 - 09:22
MEL
-
SEA
39h 27m
1 stop
United Airlines Logo
18:48 - 08:15
SEA
-
MEL
20h 27m
1 stop
$1,290United Airlines
Sun, 31 May - Sun, 7 Jun
United Airlines Logo
09:30 - 14:36
MEL
-
SEA
22h 06m
1 stop
United Airlines Logo
12:50 - 07:30
SEA
-
MEL
25h 40m
2 stops
$1,291United Airlines
Fri, 29 May - Wed, 24 Jun
United Airlines Logo
10:55 - 08:00
MEL
-
SEA
38h 05m
2 stops
United Airlines Logo
17:00 - 08:15
SEA
-
MEL
46h 15m
2 stops
$1,296United Airlines
Mon, 3 Aug - Sat, 5 Sep
Qantas Airways Logo
09:10 - 12:56
SYD
-
SEA
20h 46m
1 stop
Qantas Airways Logo
18:10 - 07:05
SEA
-
SYD
19h 55m
1 stop
$1,327Qantas Airways
Tue, 2 Jun - Wed, 17 Jun
Qantas Airways Logo
09:45 - 21:45
MEL
-
SEA
29h 00m
1 stop
Qantas Airways Logo
17:22 - 06:45
SEA
-
MEL
20h 23m
1 stop
$1,488Qantas Airways
Mon, 3 Aug - Sat, 5 Sep
Virgin Australia Logo
06:05 - 20:53
ADL
-
SEA
31h 18m
2 stops
Virgin Australia Logo
19:35 - 11:05
SEA
-
ADL
23h 00m
2 stops
$1,793Virgin Australia
Tue, 4 Aug - Tue, 25 Aug
Singapore Airlines Logo
01:10 - 08:45
PER
-
SEA
22h 35m
1 stop
Singapore Airlines Logo
08:45 - 05:25
SEA
-
PER
28h 40m
1 stop
$1,906Singapore Airlines
Wed, 14 Oct - Thu, 12 Nov
Air Canada Logo
22:40 - 10:05
PER
-
SEA
26h 25m
2 stops
Air Canada Logo
19:20 - 15:45
SEA
-
PER
29h 25m
2 stops
$1,923Air Canada
Thu, 4 Jun - Thu, 11 Jun
Virgin Australia Logo
06:05 - 14:36
ADL
-
SEA
25h 01m
2 stops
Virgin Australia Logo
10:55 - 11:05
SEA
-
ADL
31h 40m
2 stops
$1,928Virgin Australia
Fri, 24 Jul - Fri, 21 Aug

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 7 May 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

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Wed 3/6

10:55-20:53

1 stop26h 58m

Seattle/Tacoma Intl

Wed 10/6

17:20-08:15

1 stop21h 55m

$1,289

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Sun 31/5

10:55-09:22

1 stop39h 27m

Seattle/Tacoma Intl

Sun 7/6

18:48-08:15

1 stop20h 27m

$1,290

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Fri 29/5

09:30-14:36

1 stop22h 06m

Seattle/Tacoma Intl

Wed 24/6

12:50-07:30

2 stops25h 40m

$1,291

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Mon 3/8

10:55-08:00

2 stops38h 05m

Seattle/Tacoma Intl

Sat 5/9

17:00-08:15

2 stops46h 15m

$1,296
Fastest return journey

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Tue 2/6

09:10-12:56

1 stop20h 46m

Seattle/Tacoma Intl

Wed 17/6

18:10-07:05

1 stop19h 55m

$1,327

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Mon 3/8

09:45-21:45

1 stop29h 00m

Seattle/Tacoma Intl

Sat 5/9

17:22-06:45

1 stop20h 23m

$1,488

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 4/8

06:05-20:53

2 stops31h 18m

Seattle/Tacoma Intl

Tue 25/8

19:35-11:05

2 stops23h 00m

$1,793

PerthSeattle

PER - SEA

PERSEA

Perth

Wed 14/10

01:10-08:45

1 stop22h 35m

Seattle/Tacoma Intl

Thu 12/11

08:45-05:25

1 stop28h 40m

$1,906

PerthSeattle

PER - SEA

PERSEA

Perth

Thu 4/6

22:40-10:05

2 stops26h 25m

Seattle/Tacoma Intl

Thu 11/6

19:20-15:45

2 stops29h 25m

$1,923

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Fri 24/7

06:05-14:36

2 stops25h 01m

Seattle/Tacoma Intl

Fri 21/8

10:55-11:05

2 stops31h 40m

$1,928

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 August is, on average, the cheapest month to fly to Seattle from Australia, with most prices found around $1,228. If you are unable to visit Seattle during the month of August, then departing from Australia during the month September 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 $1,449 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 $1,229 on momondo.

Cheapest flights to Seattle/Tacoma Intl

Find the cheapest flights to Seattle/Tacoma Intl from your nearest city or airport
Find flights from Sydney to Seattle
CHEAPEST MONTH TO FLY TO SEATTLE FROM SYDNEYAugust16% cheaperFlying from Sydney to Seattle costs on average just $1,228 in August
MOST EXPENSIVE MONTH TO FLY TO SEATTLE FROM SYDNEYJuly32% more expensiveIt costs about $1,921 for flights to Seattle from Sydney in July
MOST POPULAR MONTH TO FLY TO SEATTLE FROM SYDNEYJune591% more users visitedMore momondo users searched in flights to Seattle from Sydney in June than any other month

Cheap Seattle flight deals and tips

Summary info about Seattle flight prices, duration and airlines

Best One-Way Price

$786

Best Round-Trip Price

$1,289

Fastest flight time

22h 11m

Popular in

September
The best one-way flight price to Seattle from Australia in the last 72 hours is $786 (Melbourne to Seattle/Tacoma Intl).
Search Deals
The best round-trip flight price to Seattle from Australia in the last 72 hours is $1,289 (Melbourne to Seattle/Tacoma Intl).
Search Deals
The fastest flight to Seattle from Australia takes 22h 11m (Sydney Kingsford Smith to Seattle/Tacoma Intl).
Search Deals
September has the highest demand for flights to Seattle, with a 12% price increase on average.
Search Deals

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 39 days in advance, when prices tend to average $1,449. Keep in mind that you might also find cheap flights to Seattle outside of this time window. In fact, momondo users recently found flights from Australia to Seattle for $883.

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 May 2026, there are 15 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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