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Cheap flights from Portland to Melbourne from $583

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 6/5. 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
0 bags

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Find the cheapest flights from Portland to Melbourne

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
11:54 am - 5:00 am
PDX
-
MEL
24h 06m
1 stop
American Airlines Logo
9:45 am - 10:39 pm
MEL
-
PDX
29h 54m
1 stop
$1,080American Airlines
Mon, Aug 3 - Mon, Aug 17
American Airlines Logo
3:27 pm - 6:45 am
PDX
-
MEL
22h 18m
1 stop
American Airlines Logo
9:45 am - 4:51 pm
MEL
-
PDX
24h 06m
2 stops
$1,086American Airlines
Wed, Jun 10 - Wed, Aug 19
United Airlines Logo
11:16 am - 8:15 am
PDX
-
MEL
27h 59m
1 stop
United Airlines Logo
10:55 am - 2:47 pm
MEL
-
PDX
20h 52m
1 stop
$1,092United Airlines
Wed, May 27 - Wed, Aug 26
United Airlines Logo
6:03 pm - 8:15 am
PDX
-
MEL
21h 12m
1 stop
United Airlines Logo
10:55 am - 8:54 pm
MEL
-
PDX
26h 59m
1 stop
$1,093United Airlines
Mon, Jul 27 - Fri, Aug 7
Delta Logo
1:25 pm - 7:50 am
PDX
-
MEL
25h 25m
1 stop
Delta Logo
10:00 am - 4:34 pm
MEL
-
PDX
23h 34m
1 stop
$1,100Delta
Fri, Jul 31 - Fri, Aug 7
Delta Logo
5:05 pm - 7:50 am
PDX
-
MEL
21h 45m
2 stops
Delta Logo
10:00 am - 11:41 pm
MEL
-
PDX
30h 41m
2 stops
$1,104Delta
Wed, Sep 2 - Wed, Sep 23
Multiple Airlines Logo
5:37 pm - 2:10 pm
PDX
-
AVV
27h 33m
2 stops
Multiple Airlines Logo
4:40 pm - 11:52 pm
AVV
-
PDX
24h 12m
2 stops
$1,376Multiple Airlines
Tue, Jul 28 - Tue, Aug 4
Qantas Airways Logo
6:35 am - 2:20 pm
PDX
-
AVV
38h 45m
2 stops
Qantas Airways Logo
10:30 am - 8:36 pm
AVV
-
PDX
27h 06m
2 stops
$1,896Qantas Airways
Wed, Sep 2 - Wed, Sep 23
Qantas Airways Logo
5:36 pm - 2:10 pm
PDX
-
AVV
27h 34m
2 stops
Qantas Airways Logo
10:30 am - 10:00 pm
AVV
-
PDX
28h 30m
2 stops
$1,899Qantas Airways
Tue, Aug 4 - Tue, Aug 18
Multiple Airlines Logo
7:45 pm - 2:10 pm
PDX
-
AVV
25h 25m
2 stops
Multiple Airlines Logo
8:40 pm - 9:30 am
AVV
-
PDX
29h 50m
2 stops
$2,121Multiple Airlines
Sun, May 24 - Sat, May 30

Delta flights from Portland to Melbourne

Our best Delta deals on Portland to Melbourne flight tickets
Delta
Sep 2
PDX5:10 pmPortland
21h 40m
1 stop
MEL7:50 amMelbourne
Sep 23
MEL10:00 amMelbourne
26h 26m
1 stop
PDX7:26 pmPortland
$1,100
Delta
Sep 2
PDX5:05 pmPortland
21h 45m
2 stops
MEL7:50 amMelbourne
Sep 23
MEL10:00 amMelbourne
30h 41m
2 stops
PDX11:41 pmPortland
$1,104
Delta
Jun 1
PDX5:18 pmPortland
21h 32m
1 stop
MEL7:50 amMelbourne
Jun 7
MEL10:00 amMelbourne
19h 25m
1 stop
PDX12:25 pmPortland
$1,230

United Airlines flights from Portland to Melbourne

Our best United Airlines deals on Portland to Melbourne flight tickets
United Airlines
May 7
PDX1:37 pmPortland
25h 38m
1 stop
MEL8:15 amMelbourne
May 21
MEL10:55 amMelbourne
18h 14m
1 stop
PDX12:09 pmPortland
$1,084
United Airlines
May 8
PDX3:59 pmPortland
23h 16m
1 stop
MEL8:15 amMelbourne
May 21
MEL10:55 amMelbourne
18h 14m
1 stop
PDX12:09 pmPortland
$1,092
United Airlines
Aug 9
PDX6:46 pmPortland
20h 29m
1 stop
MEL8:15 amMelbourne
Aug 22
MEL10:55 amMelbourne
18h 12m
1 stop
PDX12:07 pmPortland
$1,093

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 May 5, 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

Mon 8/3

11:54 am-5:00 am

1 stop24h 06m

Melbourne

Mon 8/17

9:45 am-10:39 pm

1 stop29h 54m

$1,080
Quickest round-trip

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Wed 6/10

3:27 pm-6:45 am

1 stop22h 18m

Melbourne

Wed 8/19

9:45 am-4:51 pm

2 stops24h 06m

$1,086

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Wed 5/27

11:16 am-8:15 am

1 stop27h 59m

Melbourne

Wed 8/26

10:55 am-2:47 pm

1 stop20h 52m

$1,092

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Mon 7/27

6:03 pm-8:15 am

1 stop21h 12m

Melbourne

Fri 8/7

10:55 am-8:54 pm

1 stop26h 59m

$1,093

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Fri 7/31

1:25 pm-7:50 am

1 stop25h 25m

Melbourne

Fri 8/7

10:00 am-4:34 pm

1 stop23h 34m

$1,100

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Wed 9/2

5:05 pm-7:50 am

2 stops21h 45m

Melbourne

Wed 9/23

10:00 am-11:41 pm

2 stops30h 41m

$1,104

PortlandMelbourne

PDX - AVV

PDXAVV

Portland

Tue 7/28

5:37 pm-2:10 pm

2 stops27h 33m

Melbourne Avalon

Tue 8/4

4:40 pm-11:52 pm

2 stops24h 12m

$1,376

PortlandMelbourne

PDX - AVV

PDXAVV

Portland

Wed 9/2

6:35 am-2:20 pm

2 stops38h 45m

Melbourne Avalon

Wed 9/23

10:30 am-8:36 pm

2 stops27h 06m

$1,896

PortlandMelbourne

PDX - AVV

PDXAVV

Portland

Tue 8/4

5:36 pm-2:10 pm

2 stops27h 34m

Melbourne Avalon

Tue 8/18

10:30 am-10:00 pm

2 stops28h 30m

$1,899

PortlandMelbourne

PDX - AVV

PDXAVV

Portland

Sun 5/24

7:45 pm-2:10 pm

2 stops25h 25m

Melbourne Avalon

Sat 5/30

8:40 pm-9:30 am

2 stops29h 50m

$2,121

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

21h 12m

Direct flights

None
The fastest flight from Portland to Melbourne takes 21h 12m
There are no direct flights from Portland to Melbourne. There are no popular flight routes from Portland to Melbourne.
Search flight deals

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 21h 12m 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
1,033 reviews
Search Qantas Airways flights
Air CanadaPriceFrom $928Free CancellationRating
7.1
11,000 reviews
Search Air Canada flights
United AirlinesPriceFrom $974Free CancellationRating
7.4
9,684 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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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
Melbourne Avalon Airport