What is the cheapest airline that flies from Seattle/Tacoma Intl to Melbourne?

American Airlines and Qantas Airways are the most popular carriers operating from Seattle/Tacoma Intl to Melbourne

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?

The number of operators available for flights from Seattle/Tacoma Intl Airport to Melbourne is 1 as of November 2025.

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.

$695 Cheap Flights from Seattle to Melbourne in 2025/26

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Find the cheapest flights from Seattle to Melbourne

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

15:57 - 09:30SEA-MEL

22h 33m1 stop

18:20 - 20:34MEL-SEA

21h 14m2 stops

$1,709Qantas Airways

Find Deal

Thu, 22 Jan - Tue, 3 Feb

20:00 - 14:15SEA-MEL

23h 15m2 stops

07:10 - 09:31MEL-SEA

21h 21m2 stops

$1,715Multiple Airlines

Find Deal

Tue, 13 Jan - Mon, 2 Feb

21:30 - 00:05SEA-MEL

31h 35m1 stop

01:25 - 16:05MEL-SEA

32h 40m2 stops

$1,797Multiple Airlines

Find Deal

Sun, 22 Feb - Sat, 14 Mar

21:30 - 00:05SEA-MEL

31h 35m1 stop

12:00 - 00:42MEL-SEA

30h 42m1 stop

$1,810Multiple Airlines

Find Deal

Tue, 3 Mar - Thu, 12 Mar

00:10 - 05:00SEA-MEL

33h 50m3 stops

06:05 - 15:01MEL-SEA

26h 56m2 stops

$1,813Multiple Airlines

Find Deal

Mon, 2 Mar - Thu, 12 Mar

08:45 - 07:55SEA-MEL

28h 10m2 stops

19:45 - 19:16MEL-SEA

41h 31m3 stops

$1,822Multiple Airlines

Find Deal

Sun, 22 Feb - Sun, 15 Mar

20:00 - 15:50SEA-AVV

24h 50m2 stops

06:00 - 22:06AVV-SEA

35h 06m2 stops

$1,825Multiple Airlines

Find Deal

Mon, 16 Feb - Wed, 25 Feb

15:57 - 10:25SEA-MEL

23h 28m2 stops

17:05 - 21:54MEL-SEA

22h 49m2 stops

$1,880Qantas Airways

Find Deal

Thu, 29 Jan - Tue, 24 Mar

11:50 - 11:15SEA-MEL

30h 25m1 stop

14:25 - 07:08MEL-SEA

33h 43m2 stops

$1,900Cathay Pacific

Find Deal

Mon, 20 Apr - Sun, 3 May

20:00 - 14:15SEA-MEL

23h 15m2 stops

08:10 - 09:31MEL-SEA

20h 21m2 stops

$1,912Air Canada

Find Deal

Sat, 28 Feb - Wed, 4 Mar

Qantas Airways flights from Seattle to Melbourne

Our best Qantas Airways deals on Seattle to Melbourne flight tickets

Qantas Airways

22 Jan

SEA15:57Seattle/Tacoma Intl

22h 33m

1 stop

MEL09:30Melbourne

3 Feb

MEL18:20Melbourne

21h 14m

2 stops

SEA20:34Seattle/Tacoma Intl

$1,709

Find similar

Qantas Airways

29 Jan

SEA15:57Seattle/Tacoma Intl

23h 28m

2 stops

MEL10:25Melbourne

24 Mar

MEL17:05Melbourne

22h 49m

2 stops

SEA21:54Seattle/Tacoma Intl

$1,880

Find similar

Qantas Airways

22 Jan

SEA15:57Seattle/Tacoma Intl

23h 28m

2 stops

MEL10:25Melbourne

3 Feb

MEL18:20Melbourne

21h 14m

2 stops

SEA20:34Seattle/Tacoma Intl

$1,909

Find similar

Cathay Pacific flights from Seattle to Melbourne

Our best Cathay Pacific deals on Seattle to Melbourne flight tickets

Cathay Pacific

20 Apr

SEA11:50Seattle/Tacoma Intl

30h 25m

1 stop

MEL11:15Melbourne

3 May

MEL14:25Melbourne

33h 43m

2 stops

SEA07:08Seattle/Tacoma Intl

$1,900

Find similar

Cathay Pacific

20 Apr

SEA18:00Seattle/Tacoma Intl

35h 15m

2 stops

MEL22:15Melbourne

3 May

MEL14:25Melbourne

35h 43m

2 stops

SEA09:08Seattle/Tacoma Intl

$1,924

Find similar

Cathay Pacific

4 Mar

SEA16:50Seattle/Tacoma Intl

35h 10m

2 stops

MEL23:00Melbourne

14 Mar

MEL00:45Melbourne

50h 02m

2 stops

SEA08:47Seattle/Tacoma Intl

$1,938

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Thu 22/1

15:57-09:30

1 stop22h 33m

Melbourne

Tue 3/2

18:20-20:34

2 stops21h 14m

$1,709

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Tue 13/1

20:00-14:15

2 stops23h 15m

Melbourne

Mon 2/2

07:10-09:31

2 stops21h 21m

$1,715

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Sun 22/2

21:30-00:05

1 stop31h 35m

Melbourne

Sat 14/3

01:25-16:05

2 stops32h 40m

$1,797

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Tue 3/3

21:30-00:05

1 stop31h 35m

Melbourne

Thu 12/3

12:00-00:42

1 stop30h 42m

$1,810

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Mon 2/3

00:10-05:00

3 stops33h 50m

Melbourne

Thu 12/3

06:05-15:01

2 stops26h 56m

$1,813

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Sun 22/2

08:45-07:55

2 stops28h 10m

Melbourne

Sun 15/3

19:45-19:16

3 stops41h 31m

$1,822

SeattleMelbourne

SEA - AVV

SEAAVV

Seattle/Tacoma Intl

Mon 16/2

20:00-15:50

2 stops24h 50m

Melbourne Avalon

Wed 25/2

06:00-22:06

2 stops35h 06m

$1,825

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Thu 29/1

15:57-10:25

2 stops23h 28m

Melbourne

Tue 24/3

17:05-21:54

2 stops22h 49m

$1,880

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Mon 20/4

11:50-11:15

1 stop30h 25m

Melbourne

Sun 3/5

14:25-07:08

2 stops33h 43m

$1,900

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Sat 28/2

20:00-14:15

2 stops23h 15m

Melbourne

Wed 4/3

08:10-09:31

2 stops20h 21m

$1,912

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

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 $1,715. If you aren’t able to travel to Melbourne during the month of February, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $1,717.

What is the cheapest day to depart on your flight to Melbourne?

Our data shows that Saturday is the least expensive day to fly to Melbourne. Tickets to fly out on this day can be as low as $1,793. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Melbourne on Sunday is $2,714.

What is the cheapest time of day to depart on your flight to Melbourne?

Our most recent data shows that the best time of day to fly to Melbourne is in the evening. Flights from Seattle to Melbourne during this time can be as low as $1,917. Flights to Melbourne are more costly in the afternoon, with an average ticket price of $2,294. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

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 $2,114 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 $1,372 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 19m
Direct flights	None

The fastest flight from Seattle to Melbourne takes 21h 19m

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 19h 26m.
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?
The number of operators available for flights from Seattle/Tacoma Intl Airport to Melbourne is 1 as of November 2025.
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 Airlines	PriceFrom $1,677	Free cancellation	Rating 7.4 9,046 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.