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Cheap flights from Seattle to Melbourne Airport from $646

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 23/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — MEL
9 Nov — 16 Nov1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Melbourne are usually found in February or March, booked 68 days in advance, depart on a Wednesday or Tuesday and return on a Monday

Cheap flight deals from Seattle to Melbourne

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Melbourne (MEL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 10 October 2025.

Round-trip from

$1,381

One-way from

$646

Popular in

December

Cheapest in

February

Average price

$1,918
Philippine Airlines
  • Philippine Airlines
  • 29/10-9/11
  • 2 total stops
  • 63h 00m total
  • Seattle to Melbourne
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23/11
  • 23/11
  • 2 total stops
  • 31h 05m total
  • Seattle to Melbourne
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($505 potential increase over avg. return price).
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Cheapest flight prices on average. 4% potential price decrease ($144 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2025
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Find flight deals from Seattle to Melbourne

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to Melbourne
Explore the most affordable flight options available from Seattle to Melbourne. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 October 2025.

Wed 29/1022:30SEA - MEL
1 stop35h 40mPhilippine Airlines
Sun 9/1110:20MEL - SEA
1 stop27h 20mPhilippine Airlines
Deal found 10/10$1,381
Sun 26/1022:30SEA - MEL
1 stop40h 05mPhilippine Airlines
Sun 9/1110:20MEL - SEA
1 stop27h 20mPhilippine Airlines
Deal found 9/10$1,405
Wed 3/1218:50SEA - MEL
2 stops22h 50mAmerican Airlines
Mon 22/1212:00MEL - SEA
1 stop25h 43mAmerican Airlines
Deal found 9/10$1,571
Wed 29/1022:30SEA - MEL
1 stop35h 40mMultiple Airlines
Mon 23/306:40MEL - SEA
2 stops20h 51mMultiple Airlines
Deal found 10/10$1,630
Mon 3/1119:57SEA - MEL
2 stops45h 48mMultiple Airlines
Fri 14/1114:15MEL - SEA
2 stops21h 41mMultiple Airlines
Deal found 10/10$1,638
Mon 3/1119:57SEA - MEL
2 stops45h 48mMultiple Airlines
Sat 15/1114:15MEL - SEA
2 stops22h 15mMultiple Airlines
Deal found 10/10$1,661
Mon 8/1217:05SEA - MEL
1 stop21h 25mUnited Airlines
Mon 22/1213:00MEL - SEA
1 stop24h 45mUnited Airlines
Deal found 10/10$1,676
Wed 3/1209:05SEA - MEL
1 stop29h 25mUnited Airlines
Mon 22/1211:30MEL - SEA
1 stop23h 54mUnited Airlines
Deal found 9/10$1,678
Sat 13/1205:05SEA - MEL
2 stops33h 25mUnited Airlines
Sat 27/1213:00MEL - SEA
1 stop18h 27mUnited Airlines
Deal found 10/10$1,684
Tue 28/1018:50SEA - MEL
2 stops24h 10mMultiple Airlines
Mon 23/314:30MEL - SEA
2 stops22h 17mMultiple Airlines
Deal found 10/10$1,736

Cheapflights 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, Cheapflights users made 647,157 searches. Data last updated 10 October 2025.
Use the filters below to find and compare flights from Seattle to Melbourne Airport that are best for you.

Fly from

Seattle

Fly to

Melbourne

Route

Depart

Return

Price

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Thu 19/3

22:30-08:35

1 stop40h 05m

Melbourne

Wed 25/3

10:20-19:40

1 stop27h 20m

$1,457

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Sat 21/2

20:00-13:35

2 stops22h 35m

Melbourne

Sat 7/3

08:10-09:31

2 stops20h 21m

$1,490

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Thu 29/1

17:10-10:00

1 stop21h 50m

Melbourne

Tue 24/3

12:00-20:46

1 stop26h 46m

$1,661

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Tue 10/2

06:03-10:00

1 stop32h 57m

Melbourne

Mon 20/4

10:55-21:29

1 stop27h 34m

$1,661

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Thu 29/1

09:25-10:00

1 stop29h 35m

Melbourne

Sun 22/3

12:00-20:46

1 stop26h 46m

$1,661

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Tue 17/3

19:29-09:00

1 stop19h 31m

Melbourne

Tue 24/3

10:30-12:24

1 stop19h 54m

$1,676

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Fri 20/3

16:33-08:30

1 stop21h 57m

Melbourne

Fri 27/3

10:30-15:52

1 stop23h 22m

$1,676

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Mon 8/12

17:05-09:30

1 stop21h 25m

Melbourne

Mon 22/12

11:30-21:17

2 stops28h 47m

$1,676

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Tue 17/3

19:29-09:00

1 stop19h 31m

Melbourne

Wed 25/3

10:30-12:24

1 stop19h 54m

$1,676

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Wed 11/2

09:25-10:00

1 stop29h 35m

Melbourne

Sun 22/2

11:30-21:01

2 stops28h 31m

$1,676

Flights are sorted by cheapest return flights first.

Deals found on 10/10

Showing 1-10 of 20 results
1
2

Best time to book a flight from Seattle to Melbourne

Have a flexible travel schedule? Discover the best time to fly to Melbourne from Seattle with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Melbourne Airport

How far ahead should I book a flight from Seattle to Melbourne Airport?

Use this chart to determine the optimal time to book a return flight from Seattle to Melbourne. Price data was last updated on 3 October 2025.

The best time to book flights from Seattle to Melbourne Airport is 67 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Seattle to Melbourne Airport?

Currently, May is the cheapest month in which you can book a flight from Seattle to Melbourne Airport (average of $1,239). Flying from Seattle to Melbourne Airport in April is currently the most expensive (average of $1,854). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Melbourne

Get insights into the airlines that provide service to Melbourne. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Melbourne. Reviews last updated 10 October 2025.
Read through reviews of airlines operating flights from Seattle to Melbourne Airport, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,972 reviews
Check prices

Crew

8.1

Food

6.6

Overall

7.4

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Tim,Sept 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
United Airlines
7.4
Good
8,972 reviews
United Airlines
7.4
Good
8,972 reviews
Check prices

Crew

8.1

Food

6.6

Overall

7.4

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Tim,Sept 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Melbourne. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Seattle to Melbourne?

    If you book a flight to Melbourne from Seattle, you will be flying from Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 18.4 km from the centre of Seattle. There are 0 flights from Seattle/Tacoma Intl to Melbourne per day from 1 airline.

  • How long is the flight from Seattle to Melbourne Airport?

    Philippine Airlines and United Airlines can get you from Seattle to Melbourne Airport in just under 21h 50m. Your travel time can differ by up to 18h 15m. There are 13164 km between Seattle and Melbourne Airport. Both multi-stop and direct flights can be found to your destination and back.

  • What is the cheapest airline to fly from Seattle to Melbourne Airport round-trip?

    Currently priced at $1,543, United Airlines will fly you from Seattle to Melbourne Airport and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. You may be able to fly from Seattle to Melbourne Airport for 26% less than the average price by searching for this airline.

  • Can I find deals for flights from Seattle to Melbourne that include hotel bookings?

    Yes. In addition to deals on Seattle to Melbourne flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Melbourne?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Melbourne.

  • Can I find deals for business class flights from Seattle to Melbourne?

    Yes. Cheapflights offers flight deals from Seattle to Melbourne by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Melbourne Airport?

    Currently, May is the cheapest month in which you can book a flight from Seattle to Melbourne Airport (average of $1,239). Flying from Seattle to Melbourne Airport in April is currently the most expensive (average of $1,854). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Melbourne Airport?

Book flights to Melbourne Airport if you plan to visit one of these locations
Dandenong
Geelong
Ballarat
Apollo Bay
St Kilda
Lorne
Tullamarine
Phillip Island
Shepparton
Torquay
Daylesford
Mornington
Sorrento
Doncaster

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Seattle to Melbourne

See prices for flight routes from nearby airports that may be better suited for you.
Portland to Melbourne flights

Top airline flying from Seattle to Melbourne

Discover the top airline that operate flights from Seattle to Melbourne. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 647,157 searches. Data last updated 10 October 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,543Average$2,207FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

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How does Cheapflights help users find flights from Seattle to Melbourne?

Deals for Seattle to Melbourne flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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Yes, we can. To see specific flights from Seattle to Melbourne with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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