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

Delta, United Airlines, and American 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 November 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.

$685 Cheap Flights from Portland to Australia in 2025/26

1 adult

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14:57 - 05:00PDX-BNE

20h 03m1 stop

19:40 - 09:35BNE-PDX

31h 55m1 stop

$1,049Multiple Airlines

Find Deal

Mon, 9 Feb - Mon, 2 Mar

06:40 - 05:00PDX-BNE

28h 20m1 stop

17:10 - 17:11BNE-PDX

18h 01m1 stop

$1,299American Airlines

Find Deal

Sat, 21 Feb - Sun, 1 Mar

13:00 - 07:20PDX-BNE

25h 20m1 stop

09:40 - 16:15BNE-PDX

23h 35m1 stop

$1,333Delta

Find Deal

Mon, 16 Mar - Fri, 20 Mar

09:50 - 08:45PDX-BNE

28h 55m1 stop

09:45 - 09:15BNE-PDX

16h 30m1 stop

$1,334Air Canada

Find Deal

Thu, 5 Mar - Thu, 19 Mar

13:00 - 07:20PDX-BNE

25h 20m1 stop

09:40 - 13:14BNE-PDX

20h 34m2 stops

$1,340Delta

Find Deal

Mon, 16 Mar - Fri, 20 Mar

19:00 - 16:55PDX-BNE

27h 55m2 stops

10:45 - 18:30BNE-PDX

25h 45m1 stop

$1,385Air Canada

Find Deal

Sat, 24 Jan - Fri, 30 Jan

14:40 - 09:30PDX-MEL

23h 50m1 stop

12:00 - 13:21MEL-PDX

20h 21m1 stop

$1,434Qantas Airways

Find Deal

Tue, 24 Feb - Sat, 7 Mar

15:50 - 06:45PDX-MEL

21h 55m1 stop

09:45 - 22:31MEL-PDX

29h 46m1 stop

$1,445Qantas Airways

Find Deal

Sat, 4 Apr - Sun, 3 May

13:35 - 09:00PDX-MEL

25h 25m1 stop

12:00 - 12:37MEL-PDX

18h 37m1 stop

$1,560United Airlines

Find Deal

Fri, 13 Mar - Thu, 26 Mar

13:25 - 09:00PDX-MEL

25h 35m2 stops

10:30 - 17:46MEL-PDX

25h 16m2 stops

$1,567United Airlines

Find Deal

Fri, 13 Mar - Thu, 26 Mar

Alaska Airlines flights from Portland to Australia

Our best Alaska Airlines deals on Portland to Australia flight tickets

Alaska Airlines

5 Jan

PDX07:00Portland

17h 45m

1 stop

SYD19:45Sydney Kingsford Smith

26 Jan

SYD21:40Sydney Kingsford Smith

27h 20m

2 stops

PDX06:00Portland

$1,784

Find similar

Alaska Airlines

29 Jan

PDX10:30Portland

38h 15m

1 stop

SYD19:45Sydney Kingsford Smith

15 Feb

SYD21:40Sydney Kingsford Smith

27h 20m

1 stop

PDX06:00Portland

$1,810

Find similar

Alaska Airlines

6 Jan

PDX21:50Portland

26h 55m

2 stops

SYD19:45Sydney Kingsford Smith

21 Jan

SYD21:40Sydney Kingsford Smith

26h 51m

1 stop

PDX05:31Portland

$1,827

Find similar

Qantas Airways flights from Portland to Australia

Our best Qantas Airways deals on Portland to Australia flight tickets

Qantas Airways

24 Feb

PDX14:40Portland

23h 50m

1 stop

MEL09:30Melbourne

7 Mar

MEL12:00Melbourne

20h 21m

1 stop

PDX13:21Portland

$1,434

Find similar

Qantas Airways

4 Apr

PDX15:50Portland

21h 55m

1 stop

MEL06:45Melbourne

3 May

MEL09:45Melbourne

29h 46m

1 stop

PDX22:31Portland

$1,445

Find similar

Qantas Airways

29 Dec

PDX16:26Portland

21h 54m

2 stops

SYD09:20Sydney Kingsford Smith

20 Jan

SYD21:25Sydney Kingsford Smith

18h 25m

1 stop

PDX20:50Portland

$1,556

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Mon 9/2

14:57-05:00

1 stop20h 03m

Brisbane

Mon 2/3

19:40-09:35

1 stop31h 55m

$1,049

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Sat 21/2

06:40-05:00

1 stop28h 20m

Brisbane

Sun 1/3

17:10-17:11

1 stop18h 01m

$1,299

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Mon 16/3

13:00-07:20

1 stop25h 20m

Brisbane

Fri 20/3

09:40-16:15

1 stop23h 35m

$1,333

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Thu 5/3

09:50-08:45

1 stop28h 55m

Brisbane

Thu 19/3

09:45-09:15

1 stop16h 30m

$1,334

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Mon 16/3

13:00-07:20

1 stop25h 20m

Brisbane

Fri 20/3

09:40-13:14

2 stops20h 34m

$1,340

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Sat 24/1

19:00-16:55

2 stops27h 55m

Brisbane

Fri 30/1

10:45-18:30

1 stop25h 45m

$1,385

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Tue 24/2

14:40-09:30

1 stop23h 50m

Melbourne

Sat 7/3

12:00-13:21

1 stop20h 21m

$1,434

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Sat 4/4

15:50-06:45

1 stop21h 55m

Melbourne

Sun 3/5

09:45-22:31

1 stop29h 46m

$1,445

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Fri 13/3

13:35-09:00

1 stop25h 25m

Melbourne

Thu 26/3

12:00-12:37

1 stop18h 37m

$1,560

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Fri 13/3

13:25-09:00

2 stops25h 35m

Melbourne

Thu 26/3

10:30-17:46

2 stops25h 16m

$1,567

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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 $1,528. 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 $1,547.

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 $1,245. 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 $2,022. 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 $1,398. 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 $1,813. 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 $1,565 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 November 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 $1,279	Free cancellation	Rating 7.4 9,012 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 $685

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 27/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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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Cheap last-minute flights

Alaska Airlines flights from Portland to Australia

Our best Alaska Airlines deals on Portland to Australia flight tickets

Qantas Airways flights from Portland to Australia

Our best Qantas Airways 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?

Delta, United Airlines, and American 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