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

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

What airlines fly to Melbourne?

United Airlines, Qantas Airways and Air Canada are the top three most popular airlines that fly to Melbourne from Seattle according to our data. United Airlines is the first choice among our users, with 60% of people opting to fly with this airline when traveling to Melbourne. Keep in mind that there are 4 different airlines that fly to Melbourne on a routine basis, so you have a few additional options to choose from.

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 4 as of November 2025.

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.

$508 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 round-trip flights

Enter your travel dates to find the best prices.

9:30 pm - 8:35 amSEA-MEL

40h 05m1 stop

7:10 am - 9:31 amMEL-SEA

21h 21m2 stops

$996Multiple Airlines

Find Deal

Tue, Feb 24 - Tue, Mar 3

8:00 pm - 12:25 pmSEA-MEL

22h 25m2 stops

7:50 pm - 9:33 amMEL-SEA

31h 43m2 stops

$997Multiple Airlines

Find Deal

Fri, Mar 20 - Sat, Mar 28

3:40 pm - 11:20 amSEA-MEL

26h 40m2 stops

6:00 am - 2:16 pmMEL-SEA

25h 16m2 stops

$1,004Air Canada

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Fri, Apr 24 - Mon, May 4

8:00 pm - 2:15 pmSEA-MEL

24h 15m2 stops

6:40 am - 9:31 amMEL-SEA

20h 51m2 stops

$1,042Air Canada

Find Deal

Thu, Mar 12 - Mon, Mar 16

2:59 pm - 9:30 amSEA-MEL

23h 31m1 stop

6:45 am - 6:20 pmMEL-SEA

30h 35m2 stops

$1,043Qantas Airways

Find Deal

Tue, Dec 2 - Tue, Dec 9

3:35 pm - 9:30 amSEA-MEL

23h 55m1 stop

12:00 pm - 2:16 pmMEL-SEA

20h 16m1 stop

$1,045Qantas Airways

Find Deal

Tue, Mar 10 - Tue, Mar 24

8:30 am - 5:00 amSEA-MEL

25h 30m1 stop

4:05 pm - 7:12 pmMEL-SEA

22h 07m1 stop

$1,058American Airlines

Find Deal

Fri, Dec 5 - Thu, Dec 18

10:45 am - 5:00 amSEA-MEL

23h 15m1 stop

12:00 pm - 6:54 pmMEL-SEA

25h 54m1 stop

$1,071American Airlines

Find Deal

Wed, Feb 11 - Sun, Feb 22

5:11 pm - 10:00 amSEA-MEL

21h 49m1 stop

11:30 am - 9:17 pmMEL-SEA

28h 47m2 stops

$1,082United Airlines

Find Deal

Fri, Dec 5 - Thu, Dec 18

12:15 pm - 9:30 amSEA-MEL

26h 15m1 stop

12:00 pm - 4:14 pmMEL-SEA

22h 14m1 stop

$1,095United Airlines

Find Deal

Mon, Mar 2 - Thu, Mar 12

Air Canada flights from Seattle to Melbourne

Our best Air Canada deals on Seattle to Melbourne flight tickets

Air Canada

Apr 24

SEA3:40 pmSeattle/Tacoma Intl

26h 40m

2 stops

MEL11:20 amMelbourne

May 4

MEL6:00 amMelbourne

25h 16m

2 stops

SEA2:16 pmSeattle/Tacoma Intl

$1,004

Find similar

Air Canada

Mar 12

SEA8:00 pmSeattle/Tacoma Intl

24h 15m

2 stops

MEL2:15 pmMelbourne

Mar 16

MEL6:40 amMelbourne

20h 51m

2 stops

SEA9:31 amSeattle/Tacoma Intl

$1,042

Find similar

Air Canada

Dec 5

SEA8:00 pmSeattle/Tacoma Intl

43h 35m

2 stops

MEL10:35 amMelbourne

Dec 18

MEL8:00 amMelbourne

20h 31m

2 stops

SEA9:31 amSeattle/Tacoma Intl

$1,315

Find similar

Qantas Airways flights from Seattle to Melbourne

Our best Qantas Airways deals on Seattle to Melbourne flight tickets

Qantas Airways

Dec 2

SEA2:59 pmSeattle/Tacoma Intl

23h 31m

1 stop

MEL9:30 amMelbourne

Dec 9

MEL6:45 amMelbourne

30h 35m

2 stops

SEA6:20 pmSeattle/Tacoma Intl

$1,043

Find similar

Qantas Airways

Mar 10

SEA3:35 pmSeattle/Tacoma Intl

23h 55m

1 stop

MEL9:30 amMelbourne

Mar 24

MEL12:00 pmMelbourne

20h 16m

1 stop

SEA2:16 pmSeattle/Tacoma Intl

$1,045

Find similar

Qantas Airways

Feb 2

SEA5:53 pmSeattle/Tacoma Intl

20h 37m

1 stop

MEL9:30 amMelbourne

Mar 13

MEL12:00 pmMelbourne

24h 49m

1 stop

SEA6:49 pmSeattle/Tacoma Intl

$1,047

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Tue 2/24

9:30 pm-8:35 am

1 stop40h 05m

Melbourne

Tue 3/3

7:10 am-9:31 am

2 stops21h 21m

$996

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Fri 3/20

8:00 pm-12:25 pm

2 stops22h 25m

Melbourne

Sat 3/28

7:50 pm-9:33 am

2 stops31h 43m

$997

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Fri 4/24

3:40 pm-11:20 am

2 stops26h 40m

Melbourne

Mon 5/4

6:00 am-2:16 pm

2 stops25h 16m

$1,004

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Thu 3/12

8:00 pm-2:15 pm

2 stops24h 15m

Melbourne

Mon 3/16

6:40 am-9:31 am

2 stops20h 51m

$1,042

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Tue 12/2

2:59 pm-9:30 am

1 stop23h 31m

Melbourne

Tue 12/9

6:45 am-6:20 pm

2 stops30h 35m

$1,043

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Tue 3/10

3:35 pm-9:30 am

1 stop23h 55m

Melbourne

Tue 3/24

12:00 pm-2:16 pm

1 stop20h 16m

$1,045

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Fri 12/5

8:30 am-5:00 am

1 stop25h 30m

Melbourne

Thu 12/18

4:05 pm-7:12 pm

1 stop22h 07m

$1,058

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Wed 2/11

10:45 am-5:00 am

1 stop23h 15m

Melbourne

Sun 2/22

12:00 pm-6:54 pm

1 stop25h 54m

$1,071

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Fri 12/5

5:11 pm-10:00 am

1 stop21h 49m

Melbourne

Thu 12/18

11:30 am-9:17 pm

2 stops28h 47m

$1,082

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Mon 3/2

12:15 pm-9:30 am

1 stop26h 15m

Melbourne

Thu 3/12

12:00 pm-4:14 pm

1 stop22h 14m

$1,095

Flights are sorted by cheapest round-trip 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 $1,108. The month of March is another great option to travel to Melbourne, with average flight prices from Seattle averaging around $1,189.

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

On average, the least expensive day to fly to Melbourne from Seattle is on a Monday. momondo users have found tickets for Monday departures for as low as $1,330. However, this price may fluctuate depending on the airline, the season, and holidays. 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 $1,470.

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 $1,313. Flights to Melbourne are more costly in the morning, with an average ticket price of $1,514. Departure times in the morning 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 $1,372 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 $886 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

Direct flights	None

There are no direct flights from Seattle to Melbourne. There are no popular flight routes from Seattle to Melbourne.

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How far is Seattle/Tacoma Intl to Melbourne by plane?
There are 8184.9 mi between Seattle/Tacoma Intl and Melbourne. 20h 37m 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?
The number of operators available for flights from Seattle/Tacoma Intl Airport to Melbourne is 4 as of November 2025.
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
Air Canada	PriceFrom $855	Free Cancellation	Rating 7.1 10,392 reviews	Search Air Canada flights
United Airlines	PriceFrom $1,028	Free Cancellation	Rating 7.4 8,994 reviews	Search United Airlines flights
Qantas Airways	PriceFrom $1,042	Free Cancellation	Rating 7.5 926 reviews	Search Qantas Airways flights
Alaska Airlines	PriceFrom $1,618	Free Cancellation	Rating 8.0 11,232 reviews	Search Alaska Airlines 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.