Which airlines fly to Australia?

United Airlines, Air Canada and Qantas Airways are the top three most popular airlines that fly to Australia from Portland according to our data. United Airlines is the first choice among our users, with 65% of people opting to fly with this airline when travelling to Australia. Keep in mind that there are 3 different airlines that fly to Australia on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Portland to Australia?

Alaska Airlines and Qatar Airways are the most popular carriers operating from Portland to Australia

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

Prices for flights from Portland Airport to Australia refresh daily.

How old do you have to be to fly from Portland Airport to Australia?

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 stopovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Australia.

What documentation or ID do you need to fly to Australia?

The travel and health documents required for your trip to Australia 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 licence, and a passport valid for six-months after you plan to arrive at Australia. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$1,139 Cheap Flights from Portland to Australia in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Portland to Australia

Return

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

17:55 - 12:25PDX Portland-MEL Melbourne

23h 30m2 stops San Francisco Nadi

13:45 - 18:52MEL Melbourne-PDX Portland

23h 07m2 stops Nadi Los Angeles

$1,604Multiple Airlines

Fri, 5 Mar - Tue, 16 Mar

17:29 - 08:00PDX Portland-MEL Melbourne

19h 31m1 stop Los Angeles

10:10 - 16:22MEL Melbourne-PDX Portland

25h 12m1 stop Los Angeles

$1,622Delta

Mon, 30 Nov - Mon, 7 Dec

09:16 - 08:00PDX Portland-MEL Melbourne

27h 44m2 stops Seattle/Tacoma Intl Los Angeles

10:10 - 16:37MEL Melbourne-PDX Portland

25h 27m2 stops Los Angeles Salt Lake City

$1,629Delta

Mon, 30 Nov - Mon, 7 Dec

13:15 - 09:30PDX Portland-MEL Melbourne

25h 15m2 stops Denver Intl Los Angeles

11:30 - 18:23MEL Melbourne-PDX Portland

25h 53m3 stops Los Angeles Denver Intl San Francisco

$1,728United Airlines

Tue, 1 Dec - Tue, 8 Dec

15:15 - 13:35PDX Portland-MEL Melbourne

27h 20m2 stops Vancouver Intl Sydney Kingsford Smith

07:10 - 14:41MEL Melbourne-PDX Portland

26h 31m2 stops Brisbane Vancouver Intl

$1,796Air Canada

Mon, 22 Feb - Fri, 26 Feb

15:15 - 13:35PDX Portland-MEL Melbourne

27h 20m2 stops Vancouver Intl Sydney Kingsford Smith

07:10 - 14:41MEL Melbourne-PDX Portland

26h 31m2 stops Brisbane Vancouver Intl

$1,798Air Canada

Mon, 22 Feb - Fri, 26 Feb

10:59 - 10:30PDX Portland-MEL Melbourne

28h 31m1 stop San Francisco

11:45 - 12:25MEL Melbourne-PDX Portland

18h 40m1 stop San Francisco

$1,815United Airlines

Fri, 5 Mar - Tue, 16 Mar

10:59 - 10:30PDX Portland-MEL Melbourne

28h 31m1 stop San Francisco

11:45 - 21:03MEL Melbourne-PDX Portland

27h 18m2 stops San Francisco Denver Intl

$1,820United Airlines

Fri, 5 Mar - Tue, 16 Mar

07:00 - 10:55PDX Portland-MEL Melbourne

32h 55m2 stops Vancouver Intl Auckland Intl

12:10 - 16:50MEL Melbourne-PDX Portland

23h 40m2 stops Auckland Intl Los Angeles

$1,839Multiple Airlines

Mon, 4 Jan - Tue, 26 Jan

17:46 - 09:30PDX Portland-MEL Melbourne

20h 44m1 stop Los Angeles

22:45 - 11:26MEL Melbourne-PDX Portland

31h 41m2 stops Los Angeles Seattle/Tacoma Intl

$1,840Alaska Airlines

Thu, 24 Dec - Fri, 15 Jan

Cheap last-minute flights

Enter your travel dates to find the best prices.

06:00 - 05:00PDX Portland-MEL Melbourne

28h 00m1 stop Dallas/Fort Worth

22:45 - 23:59MEL Melbourne-PDX Portland

20h 14m1 stop Los Angeles

$1,682American Airlines

Sun, 8 Nov - Sun, 29 Nov

06:00 - 05:00PDX Portland-MEL Melbourne

28h 00m1 stop Dallas/Fort Worth

22:45 - 01:44MEL Melbourne-PDX Portland

21h 59m2 stops Los Angeles Phoenix Sky Harbor Intl

$1,689American Airlines

Sun, 8 Nov - Sun, 29 Nov

13:25 - 10:30PDX Portland-MEL Melbourne

26h 05m1 stop San Francisco

08:00 - 00:54MEL Melbourne-PDX Portland

35h 54m2 stops Sydney Kingsford Smith San Francisco

$2,086United Airlines

Sun, 8 Nov - Sun, 29 Nov

05:00 - 10:30PDX Portland-MEL Melbourne

34h 30m2 stops Denver Intl San Francisco

08:00 - 00:54MEL Melbourne-PDX Portland

35h 54m2 stops Sydney Kingsford Smith San Francisco

$2,093United Airlines

Sun, 8 Nov - Sun, 29 Nov

05:15 - 05:00PDX Portland-MEL Melbourne

28h 45m2 stops Phoenix Sky Harbor Intl Dallas/Fort Worth

07:00 - 18:13MEL Melbourne-PDX Portland

30h 13m2 stops Sydney Kingsford Smith Dallas/Fort Worth

$2,151Qantas Airways

Sun, 8 Nov - Sun, 29 Nov

06:51 - 10:35PDX Portland-MEL Melbourne

32h 44m2 stops Los Angeles Sydney Kingsford Smith

08:00 - 18:27MEL Melbourne-PDX Portland

29h 27m2 stops Sydney Kingsford Smith Los Angeles

$2,191Qantas Airways

Sun, 8 Nov - Sun, 29 Nov

13:25 - 10:30PDX Portland-MEL Melbourne

26h 05m1 stop San Francisco

12:45 - 12:22MEL Melbourne-PDX Portland

18h 37m1 stop San Francisco

$2,207United Airlines

Sun, 8 Nov - Sun, 29 Nov

10:59 - 10:30PDX Portland-MEL Melbourne

28h 31m1 stop San Francisco

11:30 - 02:08MEL Melbourne-PDX Portland

33h 38m2 stops Los Angeles Denver Intl

$2,213United Airlines

Sun, 8 Nov - Sun, 29 Nov

13:25 - 10:30PDX Portland-MEL Melbourne

26h 05m1 stop San Francisco

12:45 - 00:54MEL Melbourne-PDX Portland

31h 09m1 stop San Francisco

$2,220United Airlines

Sun, 8 Nov - Sun, 29 Nov

05:15 - 05:00PDX Portland-MEL Melbourne

28h 45m2 stops Phoenix Sky Harbor Intl Dallas/Fort Worth

08:15 - 18:13MEL Melbourne-PDX Portland

28h 58m2 stops Sydney Kingsford Smith Dallas/Fort Worth

$2,265Qantas Airways

Sun, 8 Nov - Sun, 29 Nov

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Air Canada flights from Portland to Australia

Our best Air Canada deals on Portland to Australia flight tickets

Air Canada

22 Feb

PDX15:15Portland

27h 20m

2 stops

MEL13:35Melbourne

26 Feb

MEL07:10Melbourne

26h 31m

2 stops

PDX14:41Portland

$1,796

Air Canada

22 Feb

PDX15:15Portland

27h 20m

2 stops

MEL13:35Melbourne

26 Feb

MEL07:10Melbourne

26h 31m

2 stops

PDX14:41Portland

$1,798

United Airlines flights from Portland to Australia

Our best United Airlines deals on Portland to Australia flight tickets

United Airlines

1 Dec

PDX13:15Portland

25h 15m

2 stops

MEL09:30Melbourne

8 Dec

MEL11:30Melbourne

25h 53m

3 stops

PDX18:23Portland

$1,728

United Airlines

5 Mar

PDX10:59Portland

28h 31m

1 stop

MEL10:30Melbourne

16 Mar

MEL11:45Melbourne

18h 40m

1 stop

PDX12:25Portland

$1,815

United Airlines

5 Mar

PDX10:59Portland

28h 31m

1 stop

MEL10:30Melbourne

16 Mar

MEL11:45Melbourne

27h 18m

2 stops

PDX21:03Portland

$1,820

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PortlandMelbourne

PDX Portland - MEL Melbourne

PDXMEL

Portland

Fri 5/3

17:55-12:25

2 stops23h 30m

Melbourne

Tue 16/3

13:45-18:52

2 stops23h 07m

$1,604

Fastest return journey

PortlandMelbourne

PDX Portland - MEL Melbourne

PDXMEL

Portland

Mon 30/11

17:29-08:00

1 stop19h 31m

Melbourne

Mon 7/12

10:10-16:22

1 stop25h 12m

$1,622

PortlandMelbourne

PDX Portland - MEL Melbourne

PDXMEL

Portland

Mon 30/11

09:16-08:00

2 stops27h 44m

Melbourne

Mon 7/12

10:10-16:37

2 stops25h 27m

$1,629

PortlandMelbourne

PDX Portland - MEL Melbourne

PDXMEL

Portland

Tue 1/12

13:15-09:30

2 stops25h 15m

Melbourne

Tue 8/12

11:30-18:23

3 stops25h 53m

$1,728

PortlandMelbourne

PDX Portland - MEL Melbourne

PDXMEL

Portland

Mon 22/2

15:15-13:35

2 stops27h 20m

Melbourne

Fri 26/2

07:10-14:41

2 stops26h 31m

$1,796

PortlandMelbourne

PDX Portland - MEL Melbourne

PDXMEL

Portland

Mon 22/2

15:15-13:35

2 stops27h 20m

Melbourne

Fri 26/2

07:10-14:41

2 stops26h 31m

$1,798

PortlandMelbourne

PDX Portland - MEL Melbourne

PDXMEL

Portland

Fri 5/3

10:59-10:30

1 stop28h 31m

Melbourne

Tue 16/3

11:45-12:25

1 stop18h 40m

$1,815

PortlandMelbourne

PDX Portland - MEL Melbourne

PDXMEL

Portland

Fri 5/3

10:59-10:30

1 stop28h 31m

Melbourne

Tue 16/3

11:45-21:03

2 stops27h 18m

$1,820

PortlandMelbourne

PDX Portland - MEL Melbourne

PDXMEL

Portland

Mon 4/1

07:00-10:55

2 stops32h 55m

Melbourne

Tue 26/1

12:10-16:50

2 stops23h 40m

$1,839

PortlandMelbourne

PDX Portland - MEL Melbourne

PDXMEL

Portland

Thu 24/12

17:46-09:30

1 stop20h 44m

Melbourne

Fri 15/1

22:45-11:26

2 stops31h 41m

$1,840

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Portland to Australia

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

Prices

Airlines

What is the cheapest month to fly to Australia?

In general, June is the cheapest month to fly from Portland to Australia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,511. If you don’t want to visit Australia in June, then you should wait until April to fly from Portland, when ticket prices are also cheap, with an average price of $1,597.

How far in advance should I book a flight from Portland to Australia?

You are more likely to see cheaper flights to Australia from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to Australia for around $1,789 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Australia from Portland for as low as $1,607 on momondo.

Can stopping save me money on Portland to Australia flights?

You could potentially save up to 38% on your flight if you consider stops on a Portland to Australia flight.

Cheap Portland to Australia flight deals and tips

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

Best price found	$1,139
Fastest flight time	18h 05m
Direct flights	None

The best one-way flight to Australia from Portland in the past 72 hours is $1,139. The best return flight deal from Portland to Australia found on momondo in the last 72 hours is $1,604.

The fastest flight from Portland to Australia takes 18h 05m

There are no direct flights from Portland to Australia. There are no popular flight routes from Portland to Australia.

Search flight deals

Frequently asked questions about flying from Portland to Australia

When did momondo last update prices for flights from Portland Airport to Australia?
Prices for flights from Portland Airport to Australia refresh daily.
How old do you have to be to fly from Portland Airport to Australia?
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 stopovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Australia.
What documentation or ID do you need to fly to Australia?
The travel and health documents required for your trip to Australia 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 licence, and a passport valid for six-months after you plan to arrive at Australia. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Portland to Australia

Compare and see reviews for airlines that fly from Portland to Australia with momondo

Airline	Rating	Free cancellation	Price
Air Canada	PriceFrom $1,265	Free cancellation	Rating 7.1 11,846 reviews	Search Air Canada flights
Qantas Airways	PriceFrom $1,267	Free cancellation	Rating 7.5 1,122 reviews	Search Qantas Airways flights
United Airlines	PriceFrom $2,401	Free cancellation	Rating 7.3 10,463 reviews	Search United Airlines flights

Why use momondo?

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

Finding the right flight to Australia from Portland is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Australia quick and easy, saving you time and money.

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

Flights from Portland to Australia with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once all potential Portland to Australia flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes. momondo can track prices for Portland to Australia 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.