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Look for other cheap flights to Seattle/Tacoma Intl

$651 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 30/7. 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 - 23:10
MEL
-
SEA
29h 15m
1 stop
United Airlines Logo
15:33 - 08:15
SEA
-
MEL
23h 42m
1 stop
$1,282United Airlines
Tue, 9 Jun - Tue, 23 Jun
United Airlines Logo
10:55 - 08:00
MEL
-
SEA
38h 05m
2 stops
United Airlines Logo
05:00 - 08:15
SEA
-
MEL
34h 15m
2 stops
$1,283United Airlines
Thu, 28 May - Thu, 4 Jun
United Airlines Logo
10:55 - 15:48
MEL
-
SEA
45h 53m
2 stops
United Airlines Logo
17:00 - 07:30
SEA
-
MEL
69h 30m
2 stops
$1,292United Airlines
Tue, 5 May - Sat, 23 May
United Airlines Logo
10:55 - 12:25
MEL
-
SEA
18h 30m
1 stop
United Airlines Logo
13:21 - 08:15
SEA
-
MEL
25h 54m
1 stop
$1,293United Airlines
Thu, 7 May - Thu, 14 May
Qantas Airways Logo
17:50 - 21:58
SYD
-
SEA
21h 08m
1 stop
Qantas Airways Logo
14:40 - 07:05
SEA
-
SYD
23h 25m
1 stop
$1,406Qantas Airways
Wed, 10 Jun - Wed, 24 Jun
Qantas Airways Logo
09:10 - 12:56
SYD
-
SEA
20h 46m
1 stop
Qantas Airways Logo
17:28 - 07:30
SEA
-
SYD
21h 02m
1 stop
$1,423Qantas Airways
Thu, 14 May - Fri, 29 May
Japan Airlines Logo
00:10 - 10:50
PER
-
SEA
25h 40m
2 stops
Japan Airlines Logo
13:15 - 06:50
SEA
-
PER
26h 35m
2 stops
$1,686Japan Airlines
Sat, 8 Aug - Tue, 15 Sep
Japan Airlines Logo
00:10 - 10:50
PER
-
SEA
25h 40m
2 stops
Japan Airlines Logo
11:50 - 23:55
SEA
-
PER
44h 05m
2 stops
$1,767Japan Airlines
Mon, 17 Aug - Mon, 16 Nov
Virgin Australia Logo
06:05 - 16:20
ADL
-
SEA
26h 45m
2 stops
Virgin Australia Logo
15:33 - 13:45
SEA
-
ADL
29h 42m
2 stops
$2,078Virgin Australia
Fri, 29 May - Fri, 5 Jun
Air Canada Logo
06:20 - 18:32
CBR
-
SEA
29h 12m
2 stops
Air Canada Logo
19:20 - 10:40
SEA
-
CBR
22h 20m
2 stops
$2,688Air Canada
Mon, 31 Aug - Tue, 1 Sep

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 18 April 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

Tue 9/6

10:55-23:10

1 stop29h 15m

Seattle/Tacoma Intl

Tue 23/6

15:33-08:15

1 stop23h 42m

$1,282

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Thu 28/5

10:55-08:00

2 stops38h 05m

Seattle/Tacoma Intl

Thu 4/6

05:00-08:15

2 stops34h 15m

$1,283

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Tue 5/5

10:55-15:48

2 stops45h 53m

Seattle/Tacoma Intl

Sat 23/5

17:00-07:30

2 stops69h 30m

$1,292

MelbourneSeattle

MEL - SEA

MELSEA

Melbourne

Thu 7/5

10:55-12:25

1 stop18h 30m

Seattle/Tacoma Intl

Thu 14/5

13:21-08:15

1 stop25h 54m

$1,293

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 10/6

17:50-21:58

1 stop21h 08m

Seattle/Tacoma Intl

Wed 24/6

14:40-07:05

1 stop23h 25m

$1,406
Fastest return journey

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Thu 14/5

09:10-12:56

1 stop20h 46m

Seattle/Tacoma Intl

Fri 29/5

17:28-07:30

1 stop21h 02m

$1,423

PerthSeattle

PER - SEA

PERSEA

Perth

Sat 8/8

00:10-10:50

2 stops25h 40m

Seattle/Tacoma Intl

Tue 15/9

13:15-06:50

2 stops26h 35m

$1,686

PerthSeattle

PER - SEA

PERSEA

Perth

Mon 17/8

00:10-10:50

2 stops25h 40m

Seattle/Tacoma Intl

Mon 16/11

11:50-23:55

2 stops44h 05m

$1,767

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Fri 29/5

06:05-16:20

2 stops26h 45m

Seattle/Tacoma Intl

Fri 5/6

15:33-13:45

2 stops29h 42m

$2,078

CanberraSeattle

CBR - SEA

CBRSEA

Canberra

Mon 31/8

06:20-18:32

2 stops29h 12m

Seattle/Tacoma Intl

Tue 1/9

19:20-10:40

2 stops22h 20m

$2,688

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

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 $1,221. 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 $1,232.

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 $1,456 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 $1,240 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 SYDNEYSeptember17% cheaperFlying from Sydney to Seattle costs on average just $1,221 in September
MOST EXPENSIVE MONTH TO FLY TO SEATTLE FROM SYDNEYJuly33% more expensiveIt costs about $1,938 for flights to Seattle from Sydney in July
MOST POPULAR MONTH TO FLY TO SEATTLE FROM SYDNEYJune590% 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

$651

Best Round-Trip Price

$1,282

Fastest flight time

22h 46m

Popular in

September
The best one-way flight price to Seattle from Australia in the last 72 hours is $651 (Cairns to Seattle/Tacoma Intl).
Search Deals
The best round-trip flight price to Seattle from Australia in the last 72 hours is $1,282 (Melbourne to Seattle/Tacoma Intl).
Search Deals
The fastest flight to Seattle from Australia takes 22h 46m (Cairns 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 $1,456. 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 $890.

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 April 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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