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Cheap flights from Seattle to Melbourne from $634

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 12/10. 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
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.
Philippine Airlines Logo
23:10 - 06:30
SEA
-
MEL
38h 20m
1 stop
Philippine Airlines Logo
07:30 - 20:05
MEL
-
SEA
30h 35m
1 stop
$1,421Philippine Airlines
Tue, 15 Sep - Tue, 6 Oct
United Airlines Logo
19:25 - 08:15
SEA
-
MEL
19h 50m
1 stop
United Airlines Logo
11:55 - 14:22
MEL
-
SEA
20h 27m
1 stop
$1,442United Airlines
Mon, 28 Sep - Mon, 19 Oct
United Airlines Logo
07:00 - 07:30
SEA
-
MEL
31h 30m
2 stops
United Airlines Logo
11:55 - 14:22
MEL
-
SEA
20h 27m
1 stop
$1,449United Airlines
Mon, 28 Sep - Tue, 13 Oct
United Airlines Logo
07:11 - 08:15
SEA
-
MEL
32h 04m
1 stop
United Airlines Logo
11:55 - 12:23
MEL
-
SEA
18h 28m
1 stop
$1,452United Airlines
Sun, 27 Sep - Mon, 19 Oct
United Airlines Logo
05:00 - 08:15
SEA
-
MEL
58h 15m
2 stops
United Airlines Logo
10:30 - 21:15
MEL
-
SEA
28h 45m
2 stops
$1,469United Airlines
Sat, 26 Sep - Wed, 14 Oct
United Airlines Logo
19:25 - 08:15
SEA
-
MEL
19h 50m
1 stop
United Airlines Logo
12:00 - 11:35
MEL
-
SEA
41h 35m
2 stops
$1,472United Airlines
Mon, 28 Sep - Sat, 17 Oct
United Airlines Logo
05:00 - 08:15
SEA
-
MEL
34h 15m
2 stops
United Airlines Logo
12:00 - 11:35
MEL
-
SEA
41h 35m
2 stops
$1,479United Airlines
Sun, 27 Sep - Sat, 17 Oct
United Airlines Logo
19:25 - 10:35
SEA
-
MEL
22h 10m
2 stops
United Airlines Logo
11:55 - 14:22
MEL
-
SEA
20h 27m
1 stop
$1,482United Airlines
Tue, 29 Sep - Wed, 14 Oct
Qantas Airways Logo
17:10 - 06:45
SEA
-
MEL
20h 35m
1 stop
Qantas Airways Logo
09:45 - 12:20
MEL
-
SEA
19h 35m
1 stop
$1,485Qantas Airways
Thu, 6 Aug - Wed, 19 Aug
Multiple Airlines Logo
19:20 - 15:35
SEA
-
AVV
26h 15m
2 stops
Multiple Airlines Logo
06:00 - 09:52
AVV
-
SEA
21h 52m
2 stops
$1,813Multiple Airlines
Sat, 3 Oct - Sun, 18 Oct

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Qantas Airways flights from Seattle to Melbourne

Our best Qantas Airways deals on Seattle to Melbourne flight tickets
Qantas Airways
6 Aug
SEA17:10Seattle/Tacoma Intl
20h 35m
1 stop
MEL06:45Melbourne
19 Aug
MEL09:45Melbourne
19h 35m
1 stop
SEA12:20Seattle/Tacoma Intl
$1,485
Qantas Airways
5 Oct
SEA15:20Seattle/Tacoma Intl
21h 25m
1 stop
MEL06:45Melbourne
13 Oct
MEL09:45Melbourne
20h 31m
1 stop
SEA12:16Seattle/Tacoma Intl
$1,492
Qantas Airways
6 Aug
SEA17:10Seattle/Tacoma Intl
20h 35m
1 stop
MEL06:45Melbourne
19 Aug
MEL09:45Melbourne
19h 35m
1 stop
SEA12:20Seattle/Tacoma Intl
$1,526

Air New Zealand flights from Seattle to Melbourne

Our best Air New Zealand deals on Seattle to Melbourne flight tickets
Air New Zealand
30 Sept
SEA19:25Seattle/Tacoma Intl
22h 10m
2 stops
MEL10:35Melbourne
21 Oct
MEL11:55Melbourne
23h 42m
2 stops
SEA17:37Seattle/Tacoma Intl
$1,559
Air New Zealand
1 July
SEA17:04Seattle/Tacoma Intl
21h 26m
1 stop
MEL07:30Melbourne
11 July
MEL10:55Melbourne
27h 08m
1 stop
SEA21:03Seattle/Tacoma Intl
$1,628
Air New Zealand
1 July
SEA17:04Seattle/Tacoma Intl
24h 31m
2 stops
MEL10:35Melbourne
11 July
MEL06:00Melbourne
25h 38m
2 stops
SEA14:38Seattle/Tacoma Intl
$1,698

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 23 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

Tue 15/9

23:10-06:30

1 stop38h 20m

Melbourne

Tue 6/10

07:30-20:05

1 stop30h 35m

$1,421

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Mon 28/9

19:25-08:15

1 stop19h 50m

Melbourne

Mon 19/10

11:55-14:22

1 stop20h 27m

$1,442

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Mon 28/9

07:00-07:30

2 stops31h 30m

Melbourne

Tue 13/10

11:55-14:22

1 stop20h 27m

$1,449

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Sun 27/9

07:11-08:15

1 stop32h 04m

Melbourne

Mon 19/10

11:55-12:23

1 stop18h 28m

$1,452

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Sat 26/9

05:00-08:15

2 stops58h 15m

Melbourne

Wed 14/10

10:30-21:15

2 stops28h 45m

$1,469

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Mon 28/9

19:25-08:15

1 stop19h 50m

Melbourne

Sat 17/10

12:00-11:35

2 stops41h 35m

$1,472

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Sun 27/9

05:00-08:15

2 stops34h 15m

Melbourne

Sat 17/10

12:00-11:35

2 stops41h 35m

$1,479

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Tue 29/9

19:25-10:35

2 stops22h 10m

Melbourne

Wed 14/10

11:55-14:22

1 stop20h 27m

$1,482
Fastest return journey

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Thu 6/8

17:10-06:45

1 stop20h 35m

Melbourne

Wed 19/8

09:45-12:20

1 stop19h 35m

$1,485

SeattleMelbourne

SEA - AVV

SEAAVV

Seattle/Tacoma Intl

Sat 3/10

19:20-15:35

2 stops26h 15m

Melbourne Avalon

Sun 18/10

06:00-09:52

2 stops21h 52m

$1,813

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 $138. 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 $338.

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 $1,778 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 $1,472 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 35m

Direct flights

None
The fastest flight from Seattle to Melbourne takes 20h 35m
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 35m.

  • 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 $1,444Free cancellationRating
7.4
9,875 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