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

Qantas Airways, United Airlines, and Alaska Airlines 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 many operators does momondo search for flights from Portland Airport to Australia?

As of October 2025, there is 1 operator available to choose from for flights from Portland Airport to Australia.

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.

$588 Cheap Flights from Portland to Australia in 2025/26

1 adult

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17:30 - 09:30PDX-MEL

21h 00m1 stop

12:00 - 16:28MEL-PDX

23h 28m1 stop

$1,439Qantas Airways

Find Deal

Sat, 21 Feb - Sat, 7 Mar

19:00 - 13:35PDX-MEL

23h 35m2 stops

06:05 - 14:40MEL-PDX

27h 35m2 stops

$1,459Multiple Airlines

Find Deal

Sat, 21 Feb - Sat, 7 Mar

17:42 - 09:30PDX-MEL

20h 48m1 stop

12:00 - 17:12MEL-PDX

24h 12m1 stop

$1,467American Airlines

Find Deal

Thu, 20 Nov - Sat, 29 Nov

11:40 - 09:30PDX-MEL

26h 50m2 stops

12:00 - 17:12MEL-PDX

24h 12m1 stop

$1,475American Airlines

Find Deal

Sat, 15 Nov - Sat, 29 Nov

19:00 - 15:35PDX-MEL

25h 35m2 stops

07:10 - 09:15MEL-PDX

20h 05m2 stops

$1,481Air Canada

Find Deal

Fri, 6 Mar - Sun, 15 Mar

05:00 - 07:30PDX-BNE

32h 30m2 stops

11:40 - 22:46BNE-PDX

29h 06m1 stop

$1,496United Airlines

Find Deal

Thu, 11 Dec - Thu, 1 Jan

15:35 - 10:00PDX-MEL

23h 25m1 stop

13:00 - 14:46MEL-PDX

20h 46m1 stop

$1,504United Airlines

Find Deal

Sat, 27 Dec - Fri, 16 Jan

17:41 - 19:45PDX-SYD

31h 04m1 stop

21:40 - 20:50SYD-PDX

18h 10m1 stop

$1,517Hawaiian Airlines

Find Deal

Thu, 27 Nov - Thu, 4 Dec

07:00 - 19:45PDX-SYD

17h 45m1 stop

21:40 - 21:05SYD-PDX

18h 25m1 stop

$1,533Hawaiian Airlines

Find Deal

Thu, 22 Jan - Fri, 6 Feb

15:15 - 15:15PDX-MEL

29h 00m2 stops

08:10 - 09:15MEL-PDX

20h 05m2 stops

$1,608Air Canada

Find Deal

Sat, 28 Feb - Wed, 4 Mar

Hawaiian Airlines flights from Portland to Australia

Our best Hawaiian Airlines deals on Portland to Australia flight tickets

Hawaiian Airlines

27 Nov

PDX17:41Portland

31h 04m

1 stop

SYD19:45Sydney Kingsford Smith

4 Dec

SYD21:40Sydney Kingsford Smith

18h 10m

1 stop

PDX20:50Portland

$1,516

Find similar

Hawaiian Airlines

22 Jan

PDX07:00Portland

17h 45m

1 stop

SYD19:45Sydney Kingsford Smith

6 Feb

SYD21:40Sydney Kingsford Smith

18h 25m

1 stop

PDX21:05Portland

$1,533

Find similar

Hawaiian Airlines

27 Nov

PDX17:41Portland

31h 04m

1 stop

SYD19:45Sydney Kingsford Smith

4 Dec

SYD21:40Sydney Kingsford Smith

32h 10m

2 stops

PDX10:50Portland

$1,546

Find similar

Alaska Airlines flights from Portland to Australia

Our best Alaska Airlines deals on Portland to Australia flight tickets

Alaska Airlines

17 Oct

PDX08:15Portland

17h 30m

1 stop

SYD19:45Sydney Kingsford Smith

24 Oct

SYD21:40Sydney Kingsford Smith

26h 28m

2 stops

PDX06:08Portland

$1,464

Find similar

Alaska Airlines

2 Apr

PDX07:20Portland

18h 25m

1 stop

SYD19:45Sydney Kingsford Smith

16 Apr

SYD21:40Sydney Kingsford Smith

25h 31m

2 stops

PDX06:11Portland

$1,541

Find similar

Alaska Airlines

25 Oct

PDX07:50Portland

17h 55m

1 stop

SYD19:45Sydney Kingsford Smith

11 Nov

SYD21:40Sydney Kingsford Smith

30h 26m

2 stops

PDX09:06Portland

$1,549

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Sat 21/2

17:30-09:30

1 stop21h 00m

Melbourne

Sat 7/3

12:00-16:28

1 stop23h 28m

$1,439

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Sat 21/2

19:00-13:35

2 stops23h 35m

Melbourne

Sat 7/3

06:05-14:40

2 stops27h 35m

$1,459

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Thu 20/11

17:42-09:30

1 stop20h 48m

Melbourne

Sat 29/11

12:00-17:12

1 stop24h 12m

$1,467

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Sat 15/11

11:40-09:30

2 stops26h 50m

Melbourne

Sat 29/11

12:00-17:12

1 stop24h 12m

$1,475

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Fri 6/3

19:00-15:35

2 stops25h 35m

Melbourne

Sun 15/3

07:10-09:15

2 stops20h 05m

$1,481

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Thu 11/12

05:00-07:30

2 stops32h 30m

Brisbane

Thu 1/1

11:40-22:46

1 stop29h 06m

$1,496

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Sat 27/12

15:35-10:00

1 stop23h 25m

Melbourne

Fri 16/1

13:00-14:46

1 stop20h 46m

$1,504

PortlandSydney

PDX - SYD

PDXSYD

Portland

Thu 27/11

17:41-19:45

1 stop31h 04m

Sydney Kingsford Smith

Thu 4/12

21:40-20:50

1 stop18h 10m

$1,516

PortlandSydney

PDX - SYD

PDXSYD

Portland

Thu 22/1

07:00-19:45

1 stop17h 45m

Sydney Kingsford Smith

Fri 6/2

21:40-21:05

1 stop18h 25m

$1,533

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Sat 28/2

15:15-15:15

2 stops29h 00m

Melbourne

Wed 4/3

08:10-09:15

2 stops20h 05m

$1,608

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, September 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 $1,532. If you don’t want to visit Australia in September, then you should wait until August to fly from Portland, when ticket prices are also cheap, with an average price of $1,546.

What is the cheapest day to depart on your flight to Australia?

On average, the least expensive day to fly to Australia from Portland is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $1,248. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Portland to Australia on a Sunday will generally be more expensive and average around $2,027. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Australia?

According to our data, the cheapest time of day to fly to Australia is in the morning. momondo users have found flights departing from Portland to Australia in the morning for as low as $1,402. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Australia are more costly in the afternoon, with an average ticket price of $1,817. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight 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 $1,717 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 $1,570 on momondo.

Can stopping save me money on Portland to Australia flights?

You could potentially save up to 7% 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

Direct flights	None

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

Search flight deals

When did momondo last update prices for flights from Portland Airport to Australia?
Prices for flights from Portland Airport to Australia refresh daily.
How many operators does momondo search for flights from Portland Airport to Australia?
As of October 2025, there is 1 operator available to choose from for flights from Portland Airport to Australia.
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
United Airlines	PriceFrom $1,282	Free cancellation	Rating 7.4 8,970 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.

An easier way to manage your Australia trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

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Find better results for your trip to Australia

Popular Cities in Australia

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Cheap flights from Portland to Australia from $588

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 Australia departing on 9/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

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Price Alerts

Find the cheapest flights from Portland to Australia

Cheap return flights

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Hawaiian Airlines flights from Portland to Australia

Our best Hawaiian Airlines deals on Portland to Australia flight tickets

Alaska Airlines flights from Portland to Australia

Our best Alaska Airlines deals on Portland to Australia flight tickets

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Use the filters below to find and compare flights from Portland to Australia that are best for you.

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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

What is the cheapest month to fly to Australia?

What is the cheapest day to depart on your flight to Australia?

What is the cheapest time of day to depart on your flight to Australia?

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

Can stopping save me money on Portland to Australia flights?

You could potentially save up to 7% on your flight if you consider stops on a Portland to Australia flight.

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

Qantas Airways, United Airlines, and Alaska Airlines are the most popular carriers operating from Portland to Australia

Cheap Portland to Australia flight deals and tips

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

Direct flights

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

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

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

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

Best airlines flying from Portland to Australia

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

Why use momondo?

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

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

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

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

An easier way to manage your Australia trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Australia

Popular Cities in Australia

Popular flights according to clicks in the last 7 days on momondo