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

Air Canada, Delta, 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 April 2026, 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.

$691 Cheap Flights from Portland to Australia in 2026

1 adult

Discover deals from 900+ travel sites with momondo.

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

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.

19:45 - 07:05

PDX

BNE

18h 20m

1 stop

10:00 - 09:30

BNE

PDX

16h 30m

1 stop

$1,215Air Canada

Sun, 24 May - Sun, 31 May

15:30 - 07:05

PDX

BNE

22h 35m

1 stop

10:00 - 14:45

BNE

PDX

21h 45m

1 stop

$1,217Air Canada

Wed, 13 May - Wed, 27 May

10:10 - 07:05

PDX

BNE

27h 55m

1 stop

10:15 - 14:45

BNE

PDX

21h 30m

1 stop

$1,219Air Canada

Mon, 11 May - Tue, 26 May

09:50 - 07:05

PDX

BNE

28h 15m

1 stop

10:00 - 09:30

BNE

PDX

16h 30m

1 stop

$1,231Air Canada

Mon, 27 Apr - Wed, 13 May

19:45 - 12:05

PDX

BNE

23h 20m

2 stops

10:00 - 19:11

BNE

PDX

26h 11m

1 stop

$1,253Multiple Airlines

Fri, 19 Jun - Fri, 31 Jul

19:45 - 12:05

PDX

BNE

23h 20m

2 stops

10:00 - 09:31

BNE

PDX

16h 31m

1 stop

$1,256Multiple Airlines

Thu, 10 Sep - Sun, 27 Sep

15:30 - 07:05

PDX

BNE

22h 35m

1 stop

19:25 - 09:30

BNE

PDX

31h 05m

2 stops

$1,259Multiple Airlines

Wed, 13 May - Wed, 27 May

13:09 - 11:15

PDX

PER

31h 06m

2 stops

10:30 - 21:35

PER

PDX

26h 05m

2 stops

$2,330Qantas Airways

Sat, 9 May - Sat, 16 May

05:15 - 12:30

PDX

PER

40h 15m

3 stops

23:45 - 16:47

PER

PDX

32h 02m

2 stops

$2,450United Airlines

Sun, 26 Jul - Sun, 2 Aug

17:35 - 20:05

PDX

AVV

33h 30m

2 stops

06:00 - 23:30

AVV

PDX

34h 30m

2 stops

$2,692Qantas Airways

Sun, 6 Sep - Sun, 20 Sep

Alaska Airlines flights from Portland to Australia

Our best Alaska Airlines deals on Portland to Australia flight tickets

Alaska Airlines

20 May

PDX08:00Portland

17h 50m

1 stop

SYD18:50Sydney Kingsford Smith

2 June

SYD20:45Sydney Kingsford Smith

26h 35m

1 stop

PDX06:20Portland

$1,637

Alaska Airlines

19 Apr

PDX10:35Portland

39h 15m

1 stop

SYD18:50Sydney Kingsford Smith

26 Apr

SYD20:45Sydney Kingsford Smith

17h 03m

1 stop

PDX20:48Portland

$1,650

Alaska Airlines

24 May

PDX10:35Portland

39h 15m

1 stop

SYD18:50Sydney Kingsford Smith

31 May

SYD20:45Sydney Kingsford Smith

26h 35m

1 stop

PDX06:20Portland

$1,660

Air Canada flights from Portland to Australia

Our best Air Canada deals on Portland to Australia flight tickets

Air Canada

24 May

PDX19:45Portland

18h 20m

1 stop

BNE07:05Brisbane

31 May

BNE10:00Brisbane

16h 30m

1 stop

PDX09:30Portland

$1,215

Air Canada

13 May

PDX15:30Portland

22h 35m

1 stop

BNE07:05Brisbane

27 May

BNE10:00Brisbane

21h 45m

1 stop

PDX14:45Portland

$1,217

Air Canada

11 May

PDX10:10Portland

27h 55m

1 stop

BNE07:05Brisbane

26 May

BNE10:15Brisbane

21h 30m

1 stop

PDX14:45Portland

$1,219

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Sun 24/5

19:45-07:05

1 stop18h 20m

Brisbane

Sun 31/5

10:00-09:30

1 stop16h 30m

$1,215

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Wed 13/5

15:30-07:05

1 stop22h 35m

Brisbane

Wed 27/5

10:00-14:45

1 stop21h 45m

$1,217

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Mon 11/5

10:10-07:05

1 stop27h 55m

Brisbane

Tue 26/5

10:15-14:45

1 stop21h 30m

$1,219

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Mon 27/4

09:50-07:05

1 stop28h 15m

Brisbane

Wed 13/5

10:00-09:30

1 stop16h 30m

$1,231

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Fri 19/6

19:45-12:05

2 stops23h 20m

Brisbane

Fri 31/7

10:00-19:11

1 stop26h 11m

$1,253

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Thu 10/9

19:45-12:05

2 stops23h 20m

Brisbane

Sun 27/9

10:00-09:31

1 stop16h 31m

$1,256

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Wed 13/5

15:30-07:05

1 stop22h 35m

Brisbane

Wed 27/5

19:25-09:30

2 stops31h 05m

$1,259

PortlandPerth

PDX - PER

PDXPER

Portland

Sat 9/5

13:09-11:15

2 stops31h 06m

Perth

Sat 16/5

10:30-21:35

2 stops26h 05m

$2,330

PortlandPerth

PDX - PER

PDXPER

Portland

Sun 26/7

05:15-12:30

3 stops40h 15m

Perth

Sun 2/8

23:45-16:47

2 stops32h 02m

$2,450

PortlandMelbourne

PDX - AVV

PDXAVV

Portland

Sun 6/9

17:35-20:05

2 stops33h 30m

Melbourne Avalon

Sun 20/9

06:00-23:30

2 stops34h 30m

$2,692

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 $1,428. 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 $1,582.

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 $1,725 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 $1,268 on momondo.

Can stopping save me money on Portland to Australia flights?

You could potentially save up to 26% 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	18h 20m
Direct flights	None

The fastest flight from Portland to Australia takes 18h 20m

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 many operators does momondo search for flights from Portland Airport to Australia?
As of April 2026, 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 $726	Free cancellation	Rating 7.4 9,581 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.