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Cheap flights from Seattle to Melbourne from $647

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 19/8. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Seattle to Melbourne

Cheap return flights

Enter your travel dates to find the best prices.
Delta Logo
17:50 - 07:50
SEA
-
MEL
21h 00m
1 stop
Delta Logo
10:00 - 20:30
MEL
-
SEA
27h 30m
1 stop
$1,434Delta
Mon, 17 Aug - Wed, 26 Aug
Delta Logo
07:15 - 07:50
SEA
-
MEL
31h 35m
2 stops
Delta Logo
10:00 - 00:01
MEL
-
SEA
31h 01m
2 stops
$1,439Delta
Fri, 24 Jul - Fri, 31 Jul
Delta Logo
14:50 - 07:50
SEA
-
MEL
24h 00m
1 stop
Delta Logo
10:00 - 16:54
MEL
-
SEA
23h 54m
2 stops
$1,441Delta
Mon, 17 Aug - Wed, 26 Aug
Delta Logo
21:45 - 07:50
SEA
-
MEL
41h 05m
1 stop
Delta Logo
10:00 - 14:50
MEL
-
SEA
21h 50m
1 stop
$1,442Delta
Thu, 6 Aug - Wed, 19 Aug
Delta Logo
21:45 - 07:50
SEA
-
MEL
41h 05m
1 stop
Delta Logo
10:00 - 22:05
MEL
-
SEA
29h 05m
2 stops
$1,450Delta
Thu, 6 Aug - Wed, 19 Aug
Delta Logo
18:09 - 07:50
SEA
-
MEL
44h 41m
2 stops
Delta Logo
10:00 - 16:54
MEL
-
SEA
23h 54m
2 stops
$1,457Delta
Thu, 6 Aug - Wed, 19 Aug
Qantas Airways Logo
16:59 - 06:45
SEA
-
MEL
20h 46m
1 stop
Qantas Airways Logo
09:45 - 12:16
MEL
-
SEA
20h 31m
1 stop
$1,474Qantas Airways
Tue, 15 Sep - Tue, 6 Oct
Delta Logo
18:31 - 07:50
SEA
-
MEL
44h 19m
2 stops
Delta Logo
10:00 - 16:54
MEL
-
SEA
23h 54m
2 stops
$1,499Delta
Tue, 18 Aug - Wed, 2 Sep
Qantas Airways Logo
15:20 - 06:45
SEA
-
MEL
21h 25m
1 stop
Qantas Airways Logo
09:45 - 12:16
MEL
-
SEA
20h 31m
1 stop
$1,513Qantas Airways
Tue, 6 Oct - Mon, 19 Oct
Multiple Airlines Logo
19:20 - 14:10
SEA
-
AVV
24h 50m
2 stops
Multiple Airlines Logo
06:00 - 14:22
AVV
-
SEA
26h 22m
2 stops
$1,803Multiple Airlines
Mon, 5 Oct - Tue, 13 Oct

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Delta flights from Seattle to Melbourne

Our best Delta deals on Seattle to Melbourne flight tickets
Delta
29 June
SEA14:55Seattle/Tacoma Intl
23h 55m
1 stop
MEL07:50Melbourne
15 July
MEL10:00Melbourne
21h 55m
1 stop
SEA14:55Seattle/Tacoma Intl
$1,432
Delta
17 Aug
SEA17:50Seattle/Tacoma Intl
21h 00m
1 stop
MEL07:50Melbourne
26 Aug
MEL10:00Melbourne
27h 30m
1 stop
SEA20:30Seattle/Tacoma Intl
$1,434
Delta
29 June
SEA10:05Seattle/Tacoma Intl
28h 45m
1 stop
MEL07:50Melbourne
15 July
MEL10:00Melbourne
21h 35m
2 stops
SEA14:35Seattle/Tacoma Intl
$1,439

Qantas Airways flights from Seattle to Melbourne

Our best Qantas Airways deals on Seattle to Melbourne flight tickets
Qantas Airways
15 Sept
SEA16:59Seattle/Tacoma Intl
20h 46m
1 stop
MEL06:45Melbourne
6 Oct
MEL09:45Melbourne
20h 31m
1 stop
SEA12:16Seattle/Tacoma Intl
$1,474
Qantas Airways
6 Oct
SEA15:20Seattle/Tacoma Intl
21h 25m
1 stop
MEL06:45Melbourne
19 Oct
MEL09:45Melbourne
20h 31m
1 stop
SEA12:16Seattle/Tacoma Intl
$1,513
Qantas Airways
15 Sept
SEA17:44Seattle/Tacoma Intl
23h 16m
2 stops
MEL10:00Melbourne
6 Oct
MEL17:25Melbourne
22h 00m
2 stops
SEA21:25Seattle/Tacoma Intl
$1,615

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 28 June 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 17/8

17:50-07:50

1 stop21h 00m

Melbourne

Wed 26/8

10:00-20:30

1 stop27h 30m

$1,434

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Fri 24/7

07:15-07:50

2 stops31h 35m

Melbourne

Fri 31/7

10:00-00:01

2 stops31h 01m

$1,439

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Mon 17/8

14:50-07:50

1 stop24h 00m

Melbourne

Wed 26/8

10:00-16:54

2 stops23h 54m

$1,441

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Thu 6/8

21:45-07:50

1 stop41h 05m

Melbourne

Wed 19/8

10:00-14:50

1 stop21h 50m

$1,442

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Thu 6/8

21:45-07:50

1 stop41h 05m

Melbourne

Wed 19/8

10:00-22:05

2 stops29h 05m

$1,450

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Thu 6/8

18:09-07:50

2 stops44h 41m

Melbourne

Wed 19/8

10:00-16:54

2 stops23h 54m

$1,457
Fastest return journey

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Tue 15/9

16:59-06:45

1 stop20h 46m

Melbourne

Tue 6/10

09:45-12:16

1 stop20h 31m

$1,474

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Tue 18/8

18:31-07:50

2 stops44h 19m

Melbourne

Wed 2/9

10:00-16:54

2 stops23h 54m

$1,499

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Tue 6/10

15:20-06:45

1 stop21h 25m

Melbourne

Mon 19/10

09:45-12:16

1 stop20h 31m

$1,513

SeattleMelbourne

SEA - AVV

SEAAVV

Seattle/Tacoma Intl

Mon 5/10

19:20-14:10

2 stops24h 50m

Melbourne Avalon

Tue 13/10

06:00-14:22

2 stops26h 22m

$1,803

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, January 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 $141. If you aren’t able to travel to Melbourne during the month of January, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $344.

How far in advance should I book a flight from Seattle 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 $1,805 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 $1,495 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

20h 10m

Direct flights

None
The fastest flight from Seattle to Melbourne takes 20h 10m
There are no direct flights from Seattle to Melbourne. There are no popular flight routes from Seattle to Melbourne.
Search flight deals

Frequently asked questions about flying from Seattle to Melbourne

  • 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 20h 10m.

  • 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 $1,466Free cancellationRating
7.4
9,899 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