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Cheap flights from Washington to Melbourne Airport from $645

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 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — MEL
25 Jul — 1 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Washington to Melbourne

Enter your travel dates to find the best prices.

Cheapest flights from Washington to Melbourne
Explore the most affordable flight options available from Washington to Melbourne. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 June 2026.

Sun 22/1113:16
SEA
-
MEL
1 stop26h 14m
United Airlines
Sun 6/1211:30
MEL
-
SEA
1 stop19h 03m
United Airlines
Deal found 22/6$1,423
Mon 29/614:55
SEA
-
MEL
1 stop23h 55m
Delta
Wed 15/710:00
MEL
-
SEA
1 stop21h 55m
Delta
Deal found 25/6$1,432
Mon 17/817:50
SEA
-
MEL
1 stop21h 00m
Delta
Wed 26/810:00
MEL
-
SEA
1 stop27h 30m
Delta
Deal found 25/6$1,433
Fri 26/612:35
SEA
-
MEL
1 stop26h 15m
Delta
Fri 10/710:00
MEL
-
SEA
1 stop23h 40m
Delta
Deal found 23/6$1,435
Sun 28/621:40
SEA
-
MEL
1 stop41h 10m
Delta
Fri 10/710:00
MEL
-
SEA
1 stop19h 30m
Delta
Deal found 24/6$1,442
Sun 28/620:25
SEA
-
MEL
1 stop42h 25m
Delta
Wed 8/710:00
MEL
-
SEA
1 stop29h 05m
Delta
Deal found 24/6$1,443
Thu 6/821:45
SEA
-
MEL
1 stop41h 05m
Delta
Wed 19/810:00
MEL
-
SEA
2 stops29h 05m
Delta
Deal found 23/6$1,449
Thu 6/821:27
PDX
-
MEL
1 stop40h 18m
Multiple Airlines
Wed 19/809:45
MEL
-
PDX
1 stop40h 40m
Multiple Airlines
Deal found 21/6$1,542
Thu 13/806:35
PDX
-
MEL
1 stop31h 10m
American Airlines
Sun 30/809:45
MEL
-
PDX
2 stops24h 06m
American Airlines
Deal found 20/6$1,551
Thu 6/806:35
PDX
-
MEL
1 stop31h 10m
American Airlines
Wed 19/809:45
MEL
-
PDX
2 stops26h 14m
American Airlines
Deal found 21/6$1,552
Sat 21/1119:10
PDX
-
MEL
2 stops25h 20m
Multiple Airlines
Mon 30/1107:25
MEL
-
PDX
2 stops21h 01m
Multiple Airlines
Deal found 21/6$1,556
Thu 6/807:00
PDX
-
MEL
1 stop30h 45m
Qantas Airways
Wed 19/809:45
MEL
-
PDX
1 stop31h 14m
Qantas Airways
Deal found 23/6$1,561

Find flight deals from Washington to Melbourne

Keep the following information in mind while searching for Washington to Melbourne flight deals. Data was last updated 25 June 2026.

Round-trip from

$1,423

One-way from

$645

Popular in

December

Cheapest in

March

Average price

$1,584
United Airlines
  • United Airlines
  • 23/11-7/12
  • 2 total stops
  • 39h 18m total
  • Washington to Melbourne
Search Deals
12/10
  • 12/10
  • 2 total stops
  • 32h 19m total
  • Washington to Melbourne
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($511 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($75 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Washington 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 25 June 2026.
Use the filters below to find and compare flights from Washington to Melbourne Airport 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

14:50-07:50

1 stop24h 00m

Melbourne

Wed 26/8

10:00-16:54

2 stops23h 54m

$1,440

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Tue 18/8

12:44-08:15

2 stops26h 31m

Melbourne

Wed 2/9

09:30-21:15

2 stops28h 45m

$1,561
Fastest return journey

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Wed 5/8

17:10-06:45

1 stop20h 35m

Melbourne

Wed 12/8

09:45-15:33

1 stop22h 48m

$1,564

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Fri 25/9

13:19-11:20

2 stops29h 01m

Melbourne

Fri 23/10

11:55-12:23

1 stop18h 28m

$1,588

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Wed 12/8

15:43-08:15

1 stop23h 32m

Melbourne

Thu 27/8

10:55-20:59

1 stop27h 04m

$1,727

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Thu 6/8

12:50-08:15

2 stops26h 25m

Melbourne

Wed 19/8

09:30-18:19

3 stops25h 49m

$1,746

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Mon 26/10

13:19-09:30

1 stop26h 11m

Melbourne

Thu 19/11

12:45-21:02

1 stop27h 17m

$1,753

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Fri 31/7

13:14-08:15

1 stop26h 01m

Melbourne

Tue 4/8

10:55-20:54

1 stop26h 59m

$1,768

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Thu 12/11

13:19-10:30

1 stop26h 11m

Melbourne

Mon 16/11

12:45-12:01

1 stop18h 16m

$1,768

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Sat 21/11

06:00-09:50

2 stops32h 50m

Melbourne

Mon 30/11

12:00-19:28

1 stop26h 28m

$1,771

Flights are sorted by cheapest return flights first.

Deals found on 23/6

Showing 1-10 of 34 resultsSorted by cheapest first
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Best time to book a flight from Washington to Melbourne

Have a flexible travel schedule? Discover the best time to fly to Melbourne from Washington 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 Washington to Melbourne Airport

What is the cheapest month to book a flight from State of Washington to Melbourne Airport?

Currently, January is the cheapest month in which you can book a flight from State of Washington to Melbourne Airport (average of $141). Flying from State of Washington to Melbourne Airport in May is currently the most expensive (average of $1,465). 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.

How much does it cost for a return flight from State of Washington to Melbourne Airport?

How far ahead should I book a flight from State of Washington to Melbourne Airport?

To ensure you get the cheapest price possible for a flight from State of Washington to Melbourne Airport, you should look to book at least 64 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Related info for your journey

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

  • How long is the flight from State of Washington to Melbourne Airport?

    For as low as $1,842, United Airlines can have you in Melbourne Airport from State of Washington in 20h 43m. There are 13164 km between State of Washington and Melbourne Airport. Both multi-stop and direct flights can be found to your destination and back.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Washington 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 State of Washington to Melbourne Airport?

    Currently, January is the cheapest month in which you can book a flight from State of Washington to Melbourne Airport (average of $141). Flying from State of Washington to Melbourne Airport in May is currently the most expensive (average of $1,465). 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
Tullamarine
Lorne
Shepparton
St Kilda
Phillip Island
Sorrento
Torquay
Daylesford
Mornington
Brighton

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top airline flying from Washington to Melbourne

Discover the top airline that operate flights from Washington 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 25 June 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,466Average$1,816FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights helps you search for flights from Washington to Melbourne via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Washington to Melbourne?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Melbourne from Washington.

Can Cheapflights find flights from Washington to Melbourne with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Washington to Melbourne, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Washington to Melbourne become cheaper?

Yes, Cheapflights offers price alerts on Washington to Melbourne flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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