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Cheap flights from Portland to Melbourne from $421

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 3/14. 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.
Qantas Airways Logo
5:38 pm - 9:30 am
PDX
-
MEL
21h 52m
1 stop
Qantas Airways Logo
12:00 pm - 9:52 pm
MEL
-
PDX
27h 52m
1 stop
$930Qantas Airways
Wed, Mar 11 - Wed, Mar 18
Multiple Airlines Logo
9:53 am - 6:45 am
PDX
-
MEL
27h 52m
1 stop
Multiple Airlines Logo
1:30 pm - 10:13 pm
MEL
-
PDX
25h 43m
2 stops
$934Multiple Airlines
Thu, Apr 23 - Fri, May 8
Multiple Airlines Logo
10:30 am - 9:30 am
PDX
-
MEL
29h 00m
1 stop
Multiple Airlines Logo
1:45 pm - 9:53 pm
MEL
-
PDX
26h 08m
2 stops
$941Multiple Airlines
Wed, Mar 11 - Wed, Mar 18
Multiple Airlines Logo
9:53 am - 9:30 am
PDX
-
MEL
29h 37m
1 stop
Multiple Airlines Logo
1:55 pm - 8:48 pm
MEL
-
PDX
24h 53m
2 stops
$945Multiple Airlines
Mon, Mar 16 - Mon, Mar 23
Multiple Airlines Logo
7:05 pm - 4:05 pm
PDX
-
AVV
28h 00m
2 stops
Multiple Airlines Logo
8:40 pm - 9:30 am
AVV
-
PDX
29h 50m
2 stops
$947Multiple Airlines
Thu, Apr 30 - Sat, May 9
American Airlines Logo
3:10 pm - 9:30 am
PDX
-
MEL
24h 20m
2 stops
American Airlines Logo
12:00 pm - 7:16 pm
MEL
-
PDX
25h 16m
2 stops
$952American Airlines
Wed, Mar 11 - Wed, Mar 18
Multiple Airlines Logo
2:50 pm - 6:45 am
PDX
-
MEL
22h 55m
1 stop
Multiple Airlines Logo
9:45 am - 1:26 pm
MEL
-
PDX
20h 41m
1 stop
$955Multiple Airlines
Thu, Apr 23 - Fri, May 8
American Airlines Logo
5:43 pm - 9:30 am
PDX
-
MEL
20h 47m
1 stop
American Airlines Logo
4:05 pm - 11:06 pm
MEL
-
PDX
25h 01m
1 stop
$959American Airlines
Sat, Mar 7 - Sat, Mar 14
Qantas Airways Logo
5:49 pm - 2:20 pm
PDX
-
AVV
27h 31m
2 stops
Qantas Airways Logo
8:50 am - 10:27 pm
AVV
-
PDX
30h 37m
2 stops
$2,192Qantas Airways
Fri, May 8 - Thu, May 21
Qantas Airways Logo
5:38 pm - 2:10 pm
PDX
-
AVV
26h 32m
2 stops
Qantas Airways Logo
3:00 pm - 8:32 pm
AVV
-
PDX
23h 32m
2 stops
$3,113Qantas Airways
Thu, Mar 19 - Tue, Mar 24

United Airlines flights from Portland to Melbourne

Our best United Airlines deals on Portland to Melbourne flight tickets
United Airlines
Mar 19
PDX3:40 pmPortland
23h 20m
1 stop
MEL9:00 amMelbourne
Mar 26
MEL12:00 pmMelbourne
24h 47m
1 stop
PDX6:47 pmPortland
$1,022
United Airlines
Feb 24
PDX3:50 pmPortland
23h 10m
1 stop
MEL10:00 amMelbourne
Mar 7
MEL1:00 pmMelbourne
24h 47m
1 stop
PDX6:47 pmPortland
$1,023
United Airlines
Mar 18
PDX1:00 pmPortland
26h 00m
2 stops
MEL9:00 amMelbourne
Mar 24
MEL10:30 amMelbourne
25h 21m
2 stops
PDX5:51 pmPortland
$1,026

Air Tahiti Nui flights from Portland to Melbourne

Our best Air Tahiti Nui deals on Portland to Melbourne flight tickets
Air Tahiti Nui
Feb 24
PDX5:39 pmPortland
28h 36m
3 stops
MEL5:15 pmMelbourne
Mar 7
MEL6:30 pmMelbourne
45h 22m
3 stops
PDX8:52 pmPortland
$2,630
Air Tahiti Nui
Feb 24
PDX5:39 pmPortland
28h 36m
3 stops
MEL5:15 pmMelbourne
Mar 7
MEL1:55 pmMelbourne
49h 57m
3 stops
PDX8:52 pmPortland
$2,631
Air Tahiti Nui
Feb 24
PDX2:30 pmPortland
31h 45m
3 stops
MEL5:15 pmMelbourne
Mar 7
MEL6:30 pmMelbourne
45h 22m
3 stops
PDX8:52 pmPortland
$2,632

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 February 11, 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

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Wed 3/11

5:38 pm-9:30 am

1 stop21h 52m

Melbourne

Wed 3/18

12:00 pm-9:52 pm

1 stop27h 52m

$930

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Thu 4/23

9:53 am-6:45 am

1 stop27h 52m

Melbourne

Fri 5/8

1:30 pm-10:13 pm

2 stops25h 43m

$934

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Wed 3/11

10:30 am-9:30 am

1 stop29h 00m

Melbourne

Wed 3/18

1:45 pm-9:53 pm

2 stops26h 08m

$941

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Mon 3/16

9:53 am-9:30 am

1 stop29h 37m

Melbourne

Mon 3/23

1:55 pm-8:48 pm

2 stops24h 53m

$945

PortlandMelbourne

PDX - AVV

PDXAVV

Portland

Thu 4/30

7:05 pm-4:05 pm

2 stops28h 00m

Melbourne Avalon

Sat 5/9

8:40 pm-9:30 am

2 stops29h 50m

$947

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Wed 3/11

3:10 pm-9:30 am

2 stops24h 20m

Melbourne

Wed 3/18

12:00 pm-7:16 pm

2 stops25h 16m

$952

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Thu 4/23

2:50 pm-6:45 am

1 stop22h 55m

Melbourne

Fri 5/8

9:45 am-1:26 pm

1 stop20h 41m

$955

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Sat 3/7

5:43 pm-9:30 am

1 stop20h 47m

Melbourne

Sat 3/14

4:05 pm-11:06 pm

1 stop25h 01m

$959

PortlandMelbourne

PDX - AVV

PDXAVV

Portland

Fri 5/8

5:49 pm-2:20 pm

2 stops27h 31m

Melbourne Avalon

Thu 5/21

8:50 am-10:27 pm

2 stops30h 37m

$2,192

PortlandMelbourne

PDX - AVV

PDXAVV

Portland

Thu 3/19

5:38 pm-2:10 pm

2 stops26h 32m

Melbourne Avalon

Tue 3/24

3:00 pm-8:32 pm

2 stops23h 32m

$3,113

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, February 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 $984. The month of April is another great option to travel to Melbourne, with average flight prices from Portland averaging around $1,018.

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.
Search flight deals

  • 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
988 reviews
Search Qantas Airways flights
Air CanadaPriceFrom $928Free CancellationRating
7.1
10,709 reviews
Search Air Canada flights
United AirlinesPriceFrom $957Free CancellationRating
7.4
9,281 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