Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Seattle to Melbourne from $429

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 5/10. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Seattle to Melbourne

Cheap round-trip flights

Enter your travel dates to find the best prices.
Philippine Airlines Logo
11:10 pm - 6:30 am
SEA
-
MEL
38h 20m
1 stop
Philippine Airlines Logo
8:00 am - 8:05 pm
MEL
-
SEA
29h 05m
1 stop
$942Philippine Airlines
Tue, Aug 18 - Wed, Sep 2
Philippine Airlines Logo
11:10 pm - 6:30 am
SEA
-
MEL
38h 20m
1 stop
Philippine Airlines Logo
8:00 am - 8:05 pm
MEL
-
SEA
29h 05m
1 stop
$943Philippine Airlines
Tue, Aug 18 - Wed, Sep 2
Multiple Airlines Logo
8:00 pm - 11:20 am
SEA
-
MEL
22h 20m
2 stops
Multiple Airlines Logo
6:00 am - 2:20 pm
MEL
-
SEA
25h 20m
2 stops
$992Multiple Airlines
Fri, Apr 24 - Mon, May 4
Cathay Pacific Logo
12:25 pm - 5:55 am
SEA
-
MEL
24h 30m
1 stop
Cathay Pacific Logo
11:45 pm - 10:20 am
MEL
-
SEA
27h 35m
1 stop
$994Cathay Pacific
Thu, Aug 20 - Tue, Sep 1
Air Canada Logo
3:00 pm - 11:05 am
SEA
-
MEL
27h 05m
2 stops
Air Canada Logo
6:00 am - 9:17 am
MEL
-
SEA
20h 17m
2 stops
$1,000Air Canada
Mon, Jul 6 - Mon, Jul 27
Cathay Pacific Logo
12:25 pm - 5:55 am
SEA
-
MEL
24h 30m
1 stop
Cathay Pacific Logo
7:25 am - 10:20 am
MEL
-
SEA
43h 55m
1 stop
$1,001Cathay Pacific
Mon, Aug 17 - Mon, Aug 31
Cathay Pacific Logo
12:25 pm - 11:15 am
SEA
-
MEL
29h 50m
1 stop
Cathay Pacific Logo
7:25 am - 10:20 am
MEL
-
SEA
43h 55m
1 stop
$1,011Cathay Pacific
Tue, Aug 18 - Mon, Aug 31
Multiple Airlines Logo
8:00 pm - 2:20 pm
SEA
-
AVV
25h 20m
2 stops
Multiple Airlines Logo
8:55 pm - 6:30 pm
AVV
-
SEA
38h 35m
2 stops
$1,016Multiple Airlines
Fri, Apr 24 - Sun, May 3
Cathay Pacific Logo
12:25 pm - 5:55 am
SEA
-
MEL
24h 30m
1 stop
Cathay Pacific Logo
11:45 pm - 10:20 am
MEL
-
SEA
27h 35m
1 stop
$1,022Cathay Pacific
Thu, Aug 20 - Tue, Sep 1
Multiple Airlines Logo
8:00 pm - 11:20 am
SEA
-
MEL
22h 20m
2 stops
Multiple Airlines Logo
6:00 am - 2:20 pm
MEL
-
SEA
25h 20m
2 stops
$1,029Multiple Airlines
Fri, Apr 24 - Mon, May 4

United Airlines flights from Seattle to Melbourne

Our best United Airlines deals on Seattle to Melbourne flight tickets
United Airlines
Mar 31
SEA11:35 amSeattle/Tacoma Intl
27h 40m
1 stop
MEL9:15 amMelbourne
Apr 8
MEL10:55 amMelbourne
27h 02m
1 stop
SEA8:57 pmSeattle/Tacoma Intl
$1,052
United Airlines
Mar 31
SEA11:35 amSeattle/Tacoma Intl
27h 40m
1 stop
MEL9:15 amMelbourne
Apr 4
MEL11:55 amMelbourne
39h 51m
2 stops
SEA9:46 amSeattle/Tacoma Intl
$1,056
United Airlines
Mar 31
SEA5:45 pmSeattle/Tacoma Intl
21h 30m
1 stop
MEL9:15 amMelbourne
Apr 4
MEL11:55 amMelbourne
29h 32m
1 stop
SEA11:27 pmSeattle/Tacoma Intl
$1,059

Delta flights from Seattle to Melbourne

Our best Delta deals on Seattle to Melbourne flight tickets
Delta
Apr 15
SEA5:59 pmSeattle/Tacoma Intl
20h 51m
1 stop
MEL7:50 amMelbourne
Apr 22
MEL10:00 amMelbourne
27h 25m
1 stop
SEA8:25 pmSeattle/Tacoma Intl
$1,071
Delta
Apr 15
SEA1:30 pmSeattle/Tacoma Intl
25h 20m
2 stops
MEL7:50 amMelbourne
Apr 22
MEL10:00 amMelbourne
30h 59m
2 stops
SEA11:59 pmSeattle/Tacoma Intl
$1,076
Delta
Apr 6
SEA9:40 amSeattle/Tacoma Intl
29h 10m
1 stop
MEL7:50 amMelbourne
Apr 15
MEL10:00 amMelbourne
19h 37m
1 stop
SEA12:37 pmSeattle/Tacoma Intl
$1,121

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 March 5, 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

Cheapest round-trip

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Tue 8/18

11:10 pm-6:30 am

1 stop38h 20m

Melbourne

Wed 9/2

8:00 am-8:05 pm

1 stop29h 05m

$942

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Tue 8/18

11:10 pm-6:30 am

1 stop38h 20m

Melbourne

Wed 9/2

8:00 am-8:05 pm

1 stop29h 05m

$943

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Fri 4/24

8:00 pm-11:20 am

2 stops22h 20m

Melbourne

Mon 5/4

6:00 am-2:20 pm

2 stops25h 20m

$992

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Thu 8/20

12:25 pm-5:55 am

1 stop24h 30m

Melbourne

Tue 9/1

11:45 pm-10:20 am

1 stop27h 35m

$994
Quickest round-trip

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Mon 7/6

3:00 pm-11:05 am

2 stops27h 05m

Melbourne

Mon 7/27

6:00 am-9:17 am

2 stops20h 17m

$1,000

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Mon 8/17

12:25 pm-5:55 am

1 stop24h 30m

Melbourne

Mon 8/31

7:25 am-10:20 am

1 stop43h 55m

$1,001

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Tue 8/18

12:25 pm-11:15 am

1 stop29h 50m

Melbourne

Mon 8/31

7:25 am-10:20 am

1 stop43h 55m

$1,011

SeattleMelbourne

SEA - AVV

SEAAVV

Seattle/Tacoma Intl

Fri 4/24

8:00 pm-2:20 pm

2 stops25h 20m

Melbourne Avalon

Sun 5/3

8:55 pm-6:30 pm

2 stops38h 35m

$1,016

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Thu 8/20

12:25 pm-5:55 am

1 stop24h 30m

Melbourne

Tue 9/1

11:45 pm-10:20 am

1 stop27h 35m

$1,022

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Fri 4/24

8:00 pm-11:20 am

2 stops22h 20m

Melbourne

Mon 5/4

6:00 am-2:20 pm

2 stops25h 20m

$1,029

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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, February 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 $1,057. The month of March is another great option to travel to Melbourne, with average flight prices from Seattle averaging around $1,090.

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 $1,317 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 $934 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

22h 15m

Direct flights

None
The fastest flight from Seattle to Melbourne takes 22h 15m
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. 22h 15m 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
11,992 reviews
Search Alaska Airlines flights
Air CanadaPriceFrom $824Free CancellationRating
7.1
10,780 reviews
Search Air Canada flights
United AirlinesPriceFrom $1,011Free CancellationRating
7.4
9,403 reviews
Search United Airlines flights
Qantas AirwaysPriceFrom $1,034Free CancellationRating
7.5
1,002 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.

An easier way to manage your Melbourne trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 4/4
Sat 4/11
By creating a price alert you accept our terms of use and privacy policy.

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