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Cheap flights from Seattle to Melbourne from $637

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 27/4. 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 Seattle to Melbourne

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
17:06 - 12:25
SEA
-
MEL
26h 19m
2 stops
Multiple Airlines Logo
13:30 - 23:44
MEL
-
SEA
27h 14m
2 stops
$1,231Multiple Airlines
Mon, 4 May - Mon, 18 May
Multiple Airlines Logo
10:57 - 12:00
SEA
-
MEL
32h 03m
2 stops
Multiple Airlines Logo
09:45 - 13:01
MEL
-
SEA
20h 16m
1 stop
$1,340Multiple Airlines
Tue, 28 Apr - Tue, 5 May
Philippine Airlines Logo
23:10 - 06:30
SEA
-
MEL
38h 20m
1 stop
Philippine Airlines Logo
08:00 - 20:05
MEL
-
SEA
29h 05m
1 stop
$1,349Philippine Airlines
Tue, 18 Aug - Wed, 2 Sep
Cathay Pacific Logo
11:45 - 22:15
SEA
-
MEL
41h 30m
1 stop
Cathay Pacific Logo
23:45 - 10:05
MEL
-
SEA
27h 20m
1 stop
$1,425Cathay Pacific
Mon, 4 May - Mon, 18 May
Multiple Airlines Logo
20:00 - 11:25
SEA
-
MEL
22h 25m
2 stops
Multiple Airlines Logo
06:00 - 09:50
MEL
-
SEA
20h 50m
2 stops
$1,427Multiple Airlines
Thu, 30 Apr - Thu, 7 May
Multiple Airlines Logo
20:00 - 12:05
SEA
-
MEL
23h 05m
2 stops
Multiple Airlines Logo
06:00 - 18:30
MEL
-
SEA
29h 30m
2 stops
$1,429Multiple Airlines
Mon, 27 Apr - Mon, 4 May
Multiple Airlines Logo
19:20 - 11:25
SEA
-
MEL
23h 05m
2 stops
Multiple Airlines Logo
20:50 - 09:50
MEL
-
SEA
30h 00m
2 stops
$1,430Multiple Airlines
Sat, 16 May - Sat, 30 May
Multiple Airlines Logo
20:00 - 11:20
SEA
-
MEL
22h 20m
2 stops
Multiple Airlines Logo
06:00 - 14:20
MEL
-
SEA
25h 20m
2 stops
$1,442Multiple Airlines
Wed, 22 Apr - Thu, 21 May
Multiple Airlines Logo
20:00 - 11:20
SEA
-
MEL
22h 20m
2 stops
Multiple Airlines Logo
21:05 - 09:38
MEL
-
SEA
29h 33m
2 stops
$1,452Multiple Airlines
Mon, 13 Apr - Sat, 25 Apr
Multiple Airlines Logo
20:00 - 11:20
SEA
-
MEL
22h 20m
2 stops
Multiple Airlines Logo
21:05 - 09:38
MEL
-
SEA
29h 33m
2 stops
$1,453Multiple Airlines
Wed, 15 Apr - Wed, 22 Apr

Cathay Pacific flights from Seattle to Melbourne

Our best Cathay Pacific deals on Seattle to Melbourne flight tickets
Cathay Pacific
4 May
SEA11:45Seattle/Tacoma Intl
41h 30m
1 stop
MEL22:15Melbourne
18 May
MEL23:45Melbourne
27h 20m
1 stop
SEA10:05Seattle/Tacoma Intl
$1,425
Cathay Pacific
18 Aug
SEA12:25Seattle/Tacoma Intl
29h 50m
1 stop
MEL11:15Melbourne
1 Sept
MEL23:45Melbourne
27h 35m
1 stop
SEA10:20Seattle/Tacoma Intl
$1,539
Cathay Pacific
20 Aug
SEA12:25Seattle/Tacoma Intl
24h 30m
1 stop
MEL05:55Melbourne
1 Sept
MEL23:45Melbourne
27h 35m
1 stop
SEA10:20Seattle/Tacoma Intl
$1,568

Philippine Airlines flights from Seattle to Melbourne

Our best Philippine Airlines deals on Seattle to Melbourne flight tickets
Philippine Airlines
18 Aug
SEA23:10Seattle/Tacoma Intl
38h 20m
1 stop
MEL06:30Melbourne
2 Sept
MEL08:00Melbourne
29h 05m
1 stop
SEA20:05Seattle/Tacoma Intl
$1,349
Philippine Airlines
18 Aug
SEA23:10Seattle/Tacoma Intl
38h 20m
1 stop
MEL06:30Melbourne
2 Sept
MEL08:00Melbourne
29h 05m
1 stop
SEA20:05Seattle/Tacoma Intl
$1,516
Philippine Airlines
18 Aug
SEA23:10Seattle/Tacoma Intl
38h 20m
1 stop
MEL06:30Melbourne
30 Aug
MEL08:00Melbourne
29h 05m
1 stop
SEA20:05Seattle/Tacoma Intl
$1,518

momondo Fare Finder

 
Customise 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 78,305 searches. Data last updated 16 March 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 return flight

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Mon 4/5

17:06-12:25

2 stops26h 19m

Melbourne

Mon 18/5

13:30-23:44

2 stops27h 14m

$1,231

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Tue 28/4

10:57-12:00

2 stops32h 03m

Melbourne

Tue 5/5

09:45-13:01

1 stop20h 16m

$1,340

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Tue 18/8

23:10-06:30

1 stop38h 20m

Melbourne

Wed 2/9

08:00-20:05

1 stop29h 05m

$1,349

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Mon 4/5

11:45-22:15

1 stop41h 30m

Melbourne

Mon 18/5

23:45-10:05

1 stop27h 20m

$1,425
Fastest return journey

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Thu 30/4

20:00-11:25

2 stops22h 25m

Melbourne

Thu 7/5

06:00-09:50

2 stops20h 50m

$1,427

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Mon 27/4

20:00-12:05

2 stops23h 05m

Melbourne

Mon 4/5

06:00-18:30

2 stops29h 30m

$1,429

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Sat 16/5

19:20-11:25

2 stops23h 05m

Melbourne

Sat 30/5

20:50-09:50

2 stops30h 00m

$1,430

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Wed 22/4

20:00-11:20

2 stops22h 20m

Melbourne

Thu 21/5

06:00-14:20

2 stops25h 20m

$1,442

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Mon 13/4

20:00-11:20

2 stops22h 20m

Melbourne

Sat 25/4

21:05-09:38

2 stops29h 33m

$1,452

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Wed 15/4

20:00-11:20

2 stops22h 20m

Melbourne

Wed 22/4

21:05-09:38

2 stops29h 33m

$1,453

Flights are sorted by cheapest return 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 typical price of a round-trip flight between Seattle and Melbourne?

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 $1,513. If you aren’t able to travel to Melbourne during the month of February, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $1,533.

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 $1,858 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Melbourne from Seattle for as low as $1,337 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

25h 48m

Direct flights

None
The fastest flight from Seattle to Melbourne takes 25h 48m
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?

    Melbourne is 13172.3 km away from Seattle/Tacoma Intl. A reasonable flight in good conditions will take 25h 48m.

  • 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?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. 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 necessary travel and health documents for your Melbourne trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking 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
United AirlinesPriceFrom $1,448Free cancellationRating
7.4
9,428 reviews
Search United Airlines flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Melbourne from Seattle.

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

Yes. All flights to Melbourne from Seattle on momondo can be compared and filtered by various policies on offer, including flexible booking.

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?

Of course. momondo tracks the price of Seattle to Melbourne flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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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 50.4 km from Melbourne
Melbourne Avalon Airport