Cheap flights from Portland to Melbourne from $591

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Melbourne departing on 9/2. 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

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:10 pm - 2:35 pm
PDX
-
MEL
24h 25m
2 stops
Multiple Airlines Logo
8:10 am - 9:26 am
MEL
-
PDX
20h 16m
2 stops
$1,080Multiple Airlines
Sun, Nov 8 - Sun, Nov 29
American Airlines Logo
5:42 pm - 9:30 am
PDX
-
MEL
20h 48m
1 stop
American Airlines Logo
12:00 pm - 7:11 pm
MEL
-
PDX
26h 11m
1 stop
$1,081American Airlines
Wed, Nov 25 - Thu, Dec 10
American Airlines Logo
6:37 am - 5:00 am
PDX
-
MEL
29h 23m
1 stop
American Airlines Logo
9:45 am - 4:38 pm
MEL
-
PDX
23h 53m
2 stops
$1,086American Airlines
Wed, Jun 17 - Fri, Jul 17
Air Canada Logo
7:10 pm - 1:35 pm
PDX
-
MEL
23h 25m
2 stops
Air Canada Logo
7:00 am - 8:46 pm
MEL
-
PDX
32h 46m
2 stops
$1,090Air Canada
Sun, Nov 8 - Sun, Nov 29
Air Canada Logo
10:00 am - 2:35 pm
PDX
-
MEL
33h 35m
2 stops
Air Canada Logo
7:00 am - 8:46 pm
MEL
-
PDX
32h 46m
2 stops
$1,091Air Canada
Sun, Nov 8 - Sun, Nov 29
United Airlines Logo
1:14 pm - 8:15 am
PDX
-
MEL
26h 01m
1 stop
United Airlines Logo
10:55 am - 12:00 pm
MEL
-
PDX
18h 05m
1 stop
$1,092United Airlines
Wed, Jul 1 - Wed, Aug 19
United Airlines Logo
1:14 pm - 8:15 am
PDX
-
MEL
26h 01m
1 stop
United Airlines Logo
10:55 am - 12:00 pm
MEL
-
PDX
18h 05m
1 stop
$1,093United Airlines
Wed, Jul 1 - Wed, Aug 19
Air New Zealand Logo
12:50 pm - 7:30 am
PDX
-
MEL
25h 40m
2 stops
Air New Zealand Logo
9:30 am - 3:13 pm
MEL
-
PDX
22h 43m
2 stops
$1,096Air New Zealand
Wed, Jun 17 - Fri, Jul 17
Qantas Airways Logo
6:35 am - 2:20 pm
PDX
-
AVV
38h 45m
2 stops
Qantas Airways Logo
8:55 pm - 8:36 pm
AVV
-
PDX
40h 41m
2 stops
$2,121Qantas Airways
Mon, Sep 7 - Mon, Sep 21
Qantas Airways Logo
12:30 pm - 2:05 pm
PDX
-
AVV
30h 35m
2 stops
Qantas Airways Logo
8:55 pm - 8:50 pm
AVV
-
PDX
42h 55m
2 stops
$2,226Qantas Airways
Thu, Nov 26 - Thu, Dec 10

Air New Zealand flights from Portland to Melbourne

Our best Air New Zealand deals on Portland to Melbourne flight tickets
Air New Zealand
Jun 17
PDX12:50 pmPortland
25h 40m
2 stops
MEL7:30 amMelbourne
Jul 17
MEL9:30 amMelbourne
22h 43m
2 stops
PDX3:13 pmPortland
$1,096
Air New Zealand
Nov 26
PDX7:49 pmPortland
22h 26m
2 stops
MEL1:15 pmMelbourne
Dec 10
MEL9:00 amMelbourne
22h 25m
2 stops
PDX12:25 pmPortland
$1,136
Air New Zealand
Jun 8
PDX11:05 amPortland
27h 25m
2 stops
MEL7:30 amMelbourne
Jun 12
MEL10:55 amMelbourne
18h 14m
1 stop
PDX12:09 pmPortland
$1,226

Delta flights from Portland to Melbourne

Our best Delta deals on Portland to Melbourne flight tickets
Delta
Nov 23
PDX10:00 amPortland
28h 50m
1 stop
MEL9:50 amMelbourne
Dec 7
MEL12:00 pmMelbourne
23h 13m
1 stop
PDX4:13 pmPortland
$1,165
Delta
Jul 8
PDX5:14 pmPortland
21h 36m
2 stops
MEL7:50 amMelbourne
Jul 29
MEL10:00 amMelbourne
19h 20m
1 stop
PDX12:20 pmPortland
$1,169
Delta
Nov 29
PDX5:05 pmPortland
21h 45m
2 stops
MEL9:50 amMelbourne
Dec 7
MEL12:00 pmMelbourne
23h 27m
2 stops
PDX4:27 pmPortland
$1,170

momondo Fare Finder

 
Customize your flight search to find flights from Portland 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 832,500 searches. Data last updated June 4, 2026.
Use the filters below to find and compare flights from Portland to Melbourne that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Sun 11/8

7:10 pm-2:35 pm

2 stops24h 25m

Melbourne

Sun 11/29

8:10 am-9:26 am

2 stops20h 16m

$1,080

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Wed 11/25

5:42 pm-9:30 am

1 stop20h 48m

Melbourne

Thu 12/10

12:00 pm-7:11 pm

1 stop26h 11m

$1,081

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Wed 6/17

6:37 am-5:00 am

1 stop29h 23m

Melbourne

Fri 7/17

9:45 am-4:38 pm

2 stops23h 53m

$1,086

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Sun 11/8

7:10 pm-1:35 pm

2 stops23h 25m

Melbourne

Sun 11/29

7:00 am-8:46 pm

2 stops32h 46m

$1,090

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Sun 11/8

10:00 am-2:35 pm

2 stops33h 35m

Melbourne

Sun 11/29

7:00 am-8:46 pm

2 stops32h 46m

$1,091
Quickest round-trip

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Wed 7/1

1:14 pm-8:15 am

1 stop26h 01m

Melbourne

Wed 8/19

10:55 am-12:00 pm

1 stop18h 05m

$1,092

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Wed 7/1

1:14 pm-8:15 am

1 stop26h 01m

Melbourne

Wed 8/19

10:55 am-12:00 pm

1 stop18h 05m

$1,093

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Wed 6/17

12:50 pm-7:30 am

2 stops25h 40m

Melbourne

Fri 7/17

9:30 am-3:13 pm

2 stops22h 43m

$1,096

PortlandMelbourne

PDX - AVV

PDXAVV

Portland

Mon 9/7

6:35 am-2:20 pm

2 stops38h 45m

Melbourne Avalon

Mon 9/21

8:55 pm-8:36 pm

2 stops40h 41m

$2,121

PortlandMelbourne

PDX - AVV

PDXAVV

Portland

Thu 11/26

12:30 pm-2:05 pm

2 stops30h 35m

Melbourne Avalon

Thu 12/10

8:55 pm-8:50 pm

2 stops42h 55m

$2,226

Flights are sorted by cheapest round-trip 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 Portland 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 Portland and Melbourne?

What is the cheapest month to fly to Melbourne?

In general, December is the cheapest month to fly from Portland to Melbourne. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $574. The month of November is another great option to travel to Melbourne, with average flight prices from Portland averaging around $757.

Cheap Portland to Melbourne flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Melbourne

Fastest flight time

19h 11m

Direct flights

None
The fastest flight from Portland to Melbourne takes 19h 11m
There are no direct flights from Portland to Melbourne. There are no popular flight routes from Portland to Melbourne.

Frequently asked questions about flying from Portland to Melbourne

  • How far is Portland to Melbourne by plane?

    The straight-line distance from Portland to Melbourne is 8105.9 mi. Typically, this will take 19h 11m by plane in normal conditions.

  • When did momondo last update prices for flights from Portland Airport to Melbourne?

    Prices for flights from Portland Airport to Melbourne were last updated today.

  • How many operators does momondo search for flights from Portland Airport to Melbourne?

  • How old do you have to be to fly from Portland 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 layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Melbourne.

  • What documentation or ID do you need to fly to Melbourne?

    The travel and health documents required for your trip to Melbourne can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Melbourne. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Portland to Melbourne

Compare and see reviews for airlines that fly from Portland to Melbourne with momondo
Airline
Rating
Free Cancellation
Price
Qantas AirwaysPriceFrom $757Free CancellationRating
7.5
1,042 reviews
Search Qantas Airways flights
Air CanadaPriceFrom $928Free CancellationRating
7.1
11,126 reviews
Search Air Canada flights
United AirlinesPriceFrom $974Free CancellationRating
7.4
9,774 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Portland 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 Portland.

Can I find flights from Portland to Melbourne with flexible booking policies on momondo?

Yes. All flights to Melbourne from Portland on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Portland to Melbourne?

momondo helps you find the best flight between Portland and Melbourne by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Portland to Melbourne right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Portland to Melbourne flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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1 adult
Sat 7/4
Sat 7/11

Find better results for your trip to Australia

Fly into one of these airports located in Melbourne

Airports listed have a maximum distance of 31.3 mi from Melbourne