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Cheap flights from Seattle to Melbourne from $448

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Melbourne departing on 5/15. 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
0 bags

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Find the cheapest flights from Seattle to Melbourne

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
10:42 am - 6:45 am
SEA
-
MEL
27h 03m
1 stop
Multiple Airlines Logo
1:30 pm - 8:29 am
MEL
-
SEA
35h 59m
2 stops
$908Multiple Airlines
Sat, Apr 18 - Fri, May 8
Multiple Airlines Logo
10:42 am - 6:45 am
SEA
-
MEL
27h 03m
1 stop
Multiple Airlines Logo
1:25 pm - 7:46 pm
MEL
-
SEA
23h 21m
2 stops
$914Multiple Airlines
Sat, Apr 18 - Wed, May 6
Multiple Airlines Logo
10:42 am - 6:45 am
SEA
-
MEL
27h 03m
1 stop
Multiple Airlines Logo
1:30 pm - 8:29 am
MEL
-
SEA
35h 59m
2 stops
$916Multiple Airlines
Tue, Apr 21 - Fri, May 8
Multiple Airlines Logo
10:42 am - 6:45 am
SEA
-
MEL
27h 03m
1 stop
Multiple Airlines Logo
1:30 pm - 8:29 am
MEL
-
SEA
35h 59m
2 stops
$919Multiple Airlines
Sat, Apr 18 - Sun, May 10
Multiple Airlines Logo
10:42 am - 6:45 am
SEA
-
MEL
27h 03m
1 stop
Multiple Airlines Logo
1:30 pm - 8:29 am
MEL
-
SEA
35h 59m
2 stops
$920Multiple Airlines
Sun, Apr 19 - Fri, May 8
Multiple Airlines Logo
10:42 am - 6:45 am
SEA
-
MEL
27h 03m
1 stop
Multiple Airlines Logo
1:25 pm - 7:46 pm
MEL
-
SEA
23h 21m
2 stops
$922Multiple Airlines
Tue, Apr 21 - Wed, May 6
Multiple Airlines Logo
10:42 am - 6:45 am
SEA
-
MEL
27h 03m
1 stop
Multiple Airlines Logo
1:25 pm - 7:46 pm
MEL
-
SEA
23h 21m
2 stops
$927Multiple Airlines
Sun, Apr 19 - Wed, May 6
Multiple Airlines Logo
10:42 am - 6:45 am
SEA
-
MEL
27h 03m
1 stop
Multiple Airlines Logo
1:25 pm - 7:53 pm
MEL
-
SEA
23h 28m
2 stops
$939Multiple Airlines
Sat, Apr 18 - Tue, May 12
Multiple Airlines Logo
10:42 am - 6:45 am
SEA
-
MEL
27h 03m
1 stop
Multiple Airlines Logo
1:25 pm - 6:40 pm
MEL
-
SEA
22h 15m
2 stops
$947Multiple Airlines
Tue, Apr 21 - Tue, May 12
Qantas Airways Logo
3:52 pm - 9:45 am
SEA
-
AVV
23h 53m
2 stops
Qantas Airways Logo
8:10 am - 6:53 pm
AVV
-
SEA
28h 43m
2 stops
$2,028Qantas Airways
Tue, Mar 10 - Tue, Mar 24

American Airlines flights from Seattle to Melbourne

Our best American Airlines deals on Seattle to Melbourne flight tickets
American Airlines
Mar 18
SEA7:00 amSeattle/Tacoma Intl
28h 00m
1 stop
MEL5:00 amMelbourne
Mar 25
MEL12:00 pmMelbourne
24h 53m
1 stop
SEA6:53 pmSeattle/Tacoma Intl
$1,020
American Airlines
Feb 5
SEA6:00 amSeattle/Tacoma Intl
32h 30m
1 stop
MEL9:30 amMelbourne
Feb 18
MEL12:00 pmMelbourne
25h 58m
1 stop
SEA6:58 pmSeattle/Tacoma Intl
$1,022
American Airlines
Mar 10
SEA7:24 pmSeattle/Tacoma Intl
20h 06m
1 stop
MEL9:30 amMelbourne
Mar 24
MEL12:00 pmMelbourne
28h 42m
1 stop
SEA10:42 pmSeattle/Tacoma Intl
$1,039

United Airlines flights from Seattle to Melbourne

Our best United Airlines deals on Seattle to Melbourne flight tickets
United Airlines
Feb 5
SEA12:24 pmSeattle/Tacoma Intl
26h 06m
1 stop
MEL9:30 amMelbourne
Feb 18
MEL11:30 amMelbourne
28h 31m
2 stops
SEA9:01 pmSeattle/Tacoma Intl
$1,045
United Airlines
Feb 10
SEA9:00 amSeattle/Tacoma Intl
29h 30m
1 stop
MEL9:30 amMelbourne
Apr 20
MEL10:55 amMelbourne
24h 40m
1 stop
SEA6:35 pmSeattle/Tacoma Intl
$1,062
United Airlines
Feb 10
SEA9:00 amSeattle/Tacoma Intl
29h 30m
1 stop
MEL9:30 amMelbourne
Apr 20
MEL10:55 amMelbourne
24h 40m
1 stop
SEA6:35 pmSeattle/Tacoma Intl
$1,063

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Melbourne 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 February 3, 2026.
Use the filters below to find and compare flights from Seattle to Melbourne that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Sat 4/18

10:42 am-6:45 am

1 stop27h 03m

Melbourne

Fri 5/8

1:30 pm-8:29 am

2 stops35h 59m

$908

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Sat 4/18

10:42 am-6:45 am

1 stop27h 03m

Melbourne

Wed 5/6

1:25 pm-7:46 pm

2 stops23h 21m

$914

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Tue 4/21

10:42 am-6:45 am

1 stop27h 03m

Melbourne

Fri 5/8

1:30 pm-8:29 am

2 stops35h 59m

$916

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Sat 4/18

10:42 am-6:45 am

1 stop27h 03m

Melbourne

Sun 5/10

1:30 pm-8:29 am

2 stops35h 59m

$919

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Sun 4/19

10:42 am-6:45 am

1 stop27h 03m

Melbourne

Fri 5/8

1:30 pm-8:29 am

2 stops35h 59m

$920

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Tue 4/21

10:42 am-6:45 am

1 stop27h 03m

Melbourne

Wed 5/6

1:25 pm-7:46 pm

2 stops23h 21m

$922

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Sun 4/19

10:42 am-6:45 am

1 stop27h 03m

Melbourne

Wed 5/6

1:25 pm-7:46 pm

2 stops23h 21m

$927

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Sat 4/18

10:42 am-6:45 am

1 stop27h 03m

Melbourne

Tue 5/12

1:25 pm-7:53 pm

2 stops23h 28m

$939

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Tue 4/21

10:42 am-6:45 am

1 stop27h 03m

Melbourne

Tue 5/12

1:25 pm-6:40 pm

2 stops22h 15m

$947

SeattleMelbourne

SEA - AVV

SEAAVV

Seattle/Tacoma Intl

Tue 3/10

3:52 pm-9:45 am

2 stops23h 53m

Melbourne Avalon

Tue 3/24

8:10 am-6:53 pm

2 stops28h 43m

$2,028

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 Melbourne from

How to get the cheapest flight ticket from Seattle to Melbourne

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 Melbourne?

In general, March is the cheapest month to fly from Seattle to Melbourne. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,093. The month of February is another great option to travel to Melbourne, with average flight prices from Seattle averaging around $1,108.

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

You are more likely to see cheaper flights to Melbourne from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Melbourne for around $1,333 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Melbourne from Seattle for as low as $838 on momondo.

Cheap Seattle to Melbourne flight deals and tips

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

Fastest flight time

21h 18m

Direct flights

None
The fastest flight from Seattle to Melbourne takes 21h 18m
There are no direct flights from Seattle to Melbourne. There are no popular flight routes from Seattle to Melbourne.
Search flight deals

  • How far is Seattle/Tacoma Intl to Melbourne by plane?

    There are 8184.9 mi between Seattle/Tacoma Intl and Melbourne. 21h 18m is a normal flight duration for this route.

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

    Prices for flights from Seattle/Tacoma Intl Airport to Melbourne refresh daily.

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

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

    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 Seattle/Tacoma Intl Airport to Melbourne.

  • What documentation or ID do you need to fly to Melbourne?

    The travel and health documents you'll need for your trip to Melbourne 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 Melbourne. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Seattle to Melbourne

Compare and see reviews for airlines that fly from Seattle to Melbourne with momondo
Airline
Rating
Free Cancellation
Price
Alaska AirlinesPriceFrom $97Free CancellationRating
8.0
11,832 reviews
Search Alaska Airlines flights
Air CanadaPriceFrom $824Free CancellationRating
7.1
10,680 reviews
Search Air Canada flights
United AirlinesPriceFrom $1,011Free CancellationRating
7.4
9,234 reviews
Search United Airlines flights
Qantas AirwaysPriceFrom $1,034Free CancellationRating
7.5
985 reviews
Search Qantas Airways flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Seattle to Melbourne for you.

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

All flight searches from Seattle to Melbourne on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Seattle to Melbourne?

Once all potential Seattle to Melbourne flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Price alerts on flights to Melbourne from Seattle 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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Find better results for your trip to Australia

Fly into one of these airports located in Melbourne

Airports listed have a maximum distance of 31.3 mi from Melbourne
Melbourne Avalon Airport