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

Air Canada, American Airlines, and United 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 December 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.

$608 Cheap Flights from Portland to Australia in 2025/26

1 adult

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Find the cheapest flights from Portland to Australia

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

15:15 - 08:45

PDX

BNE

23h 30m1 stop

09:45 - 14:40

BNE

PDX

21h 55m1 stop

$1,196Air Canada

Thu, 5 Mar - Thu, 19 Mar

19:00 - 08:45

PDX

BNE

19h 45m1 stop

06:10 - 09:15

BNE

PDX

21h 05m2 stops

$1,221Multiple Airlines

Sat, 10 Jan - Sat, 24 Jan

19:00 - 08:45

PDX

BNE

19h 45m1 stop

10:45 - 18:30

BNE

PDX

25h 45m1 stop

$1,253Air Canada

Tue, 20 Jan - Sat, 31 Jan

06:40 - 05:00

PDX

BNE

28h 20m1 stop

17:10 - 17:19

BNE

PDX

18h 09m1 stop

$1,271American Airlines

Sat, 21 Feb - Sun, 1 Mar

08:30 - 05:00

PDX

BNE

26h 30m2 stops

17:10 - 00:16

BNE

PDX

25h 06m2 stops

$1,278American Airlines

Sat, 21 Feb - Sun, 1 Mar

14:57 - 09:30

PDX

MEL

23h 33m1 stop

12:00 - 13:41

MEL

PDX

20h 41m1 stop

$1,418Qantas Airways

Mon, 2 Feb - Tue, 10 Feb

10:52 - 19:55

PDX

TSV

39h 03m2 stops

06:00 - 20:34

TSV

PDX

32h 34m2 stops

$1,879Qantas Airways

Fri, 6 Feb - Tue, 10 Feb

15:50 - 13:20

PDX

OOL

27h 30m2 stops

07:20 - 18:55

OOL

PDX

29h 35m3 stops

$2,322United Airlines

Thu, 19 Feb - Mon, 23 Feb

17:30 - 22:40

PDX

PER

38h 10m2 stops

00:10 - 23:20

PER

PDX

62h 10m2 stops

$2,324Cathay Pacific

Tue, 28 Apr - Fri, 1 May

21:50 - 06:55

PDX

PER

41h 05m2 stops

00:25 - 13:41

PER

PDX

29h 16m2 stops

$3,275Cathay Pacific

Sun, 4 Jan - Thu, 8 Jan

Air New Zealand flights from Portland to Australia

Our best Air New Zealand deals on Portland to Australia flight tickets

Air New Zealand

22 Feb

PDX09:50Portland

30h 05m

2 stops

BNE09:55Brisbane

22 Mar

BNE18:05Brisbane

45h 59m

2 stops

PDX23:04Portland

$2,040

Find similar

Air New Zealand

24 Feb

PDX07:30Portland

32h 25m

2 stops

BNE09:55Brisbane

22 Mar

BNE18:05Brisbane

47h 39m

2 stops

PDX00:44Portland

$2,046

Find similar

Air New Zealand

23 Dec

PDX19:00Portland

44h 30m

2 stops

SYD10:30Sydney Kingsford Smith

3 Jan

SYD17:55Sydney Kingsford Smith

39h 51m

2 stops

PDX14:46Portland

$4,385

Find similar

United Airlines flights from Portland to Australia

Our best United Airlines deals on Portland to Australia flight tickets

United Airlines

22 Feb

PDX19:57Portland

17h 33m

1 stop

BNE07:30Brisbane

25 Mar

BNE10:40Brisbane

25h 07m

1 stop

PDX18:47Portland

$1,305

Find similar

United Airlines

5 Feb

PDX13:24Portland

24h 06m

2 stops

BNE07:30Brisbane

9 Feb

BNE11:40Brisbane

18h 53m

1 stop

PDX12:33Portland

$1,311

Find similar

United Airlines

23 Feb

PDX13:18Portland

24h 12m

2 stops

BNE07:30Brisbane

24 Mar

BNE10:40Brisbane

24h 11m

2 stops

PDX17:51Portland

$1,313

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Thu 5/3

15:15-08:45

1 stop23h 30m

Brisbane

Thu 19/3

09:45-14:40

1 stop21h 55m

$1,196

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Sat 10/1

19:00-08:45

1 stop19h 45m

Brisbane

Sat 24/1

06:10-09:15

2 stops21h 05m

$1,221

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Tue 20/1

19:00-08:45

1 stop19h 45m

Brisbane

Sat 31/1

10:45-18:30

1 stop25h 45m

$1,253

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Sat 21/2

06:40-05:00

1 stop28h 20m

Brisbane

Sun 1/3

17:10-17:19

1 stop18h 09m

$1,271

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Sat 21/2

08:30-05:00

2 stops26h 30m

Brisbane

Sun 1/3

17:10-00:16

2 stops25h 06m

$1,278

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Mon 2/2

14:57-09:30

1 stop23h 33m

Melbourne

Tue 10/2

12:00-13:41

1 stop20h 41m

$1,418

PortlandTownsville

PDX - TSV

PDXTSV

Portland

Fri 6/2

10:52-19:55

2 stops39h 03m

Townsville

Tue 10/2

06:00-20:34

2 stops32h 34m

$1,879

PortlandCoolangatta

PDX - OOL

PDXOOL

Portland

Thu 19/2

15:50-13:20

2 stops27h 30m

Coolangatta Gold Coast

Mon 23/2

07:20-18:55

3 stops29h 35m

$2,322

PortlandPerth

PDX - PER

PDXPER

Portland

Tue 28/4

17:30-22:40

2 stops38h 10m

Perth

Fri 1/5

00:10-23:20

2 stops62h 10m

$2,324

PortlandPerth

PDX - PER

PDXPER

Portland

Sun 4/1

21:50-06:55

2 stops41h 05m

Perth

Thu 8/1

00:25-13:41

2 stops29h 16m

$3,275

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 $1,496. If you don’t want to visit Australia in September, then you should wait until June to fly from Portland, when ticket prices are also cheap, with an average price of $1,498.

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 $1,216. 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 $1,974. 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 $1,365. 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 $1,770. 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 $1,760 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 $1,348 on momondo.

Can stopping save me money on Portland to Australia flights?

You could potentially save up to 14% 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

Fastest flight time	17h 45m
Direct flights	None

The fastest flight from Portland to Australia takes 17h 45m

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 December 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 $1,353	Free cancellation	Rating 7.4 9,092 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.