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

Alaska Airlines, Air Canada, and Delta 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 August 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.

$785 Cheap Flights from Portland to Australia in 2026

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.

10:10 - 07:05PDX Portland-BNE Brisbane

27h 55m1 stop Vancouver Intl

10:45 - 09:26BNE Brisbane-PDX Portland

16h 41m1 stop Vancouver Intl

$1,362Air Canada

Tue, 20 Oct - Tue, 3 Nov

10:00 - 08:45PDX Portland-BNE Brisbane

29h 45m1 stop Vancouver Intl

10:45 - 18:31BNE Brisbane-PDX Portland

25h 46m1 stop Vancouver Intl

$1,362Air Canada

Sat, 31 Oct - Sun, 8 Nov

19:10 - 08:45PDX Portland-BNE Brisbane

19h 35m1 stop Vancouver Intl

10:45 - 18:31BNE Brisbane-PDX Portland

25h 46m1 stop Vancouver Intl

$1,362Air Canada

Mon, 2 Nov - Mon, 16 Nov

15:30 - 07:05PDX Portland-BNE Brisbane

22h 35m1 stop Vancouver Intl

10:45 - 18:31BNE Brisbane-PDX Portland

25h 46m1 stop Vancouver Intl

$1,362Air Canada

Mon, 31 Aug - Wed, 18 Nov

19:45 - 07:05PDX Portland-BNE Brisbane

18h 20m1 stop Vancouver Intl

10:00 - 09:31BNE Brisbane-PDX Portland

16h 31m1 stop Vancouver Intl

$1,362Air Canada

Mon, 17 Aug - Sun, 23 Aug

19:45 - 07:05PDX Portland-BNE Brisbane

18h 20m1 stop Vancouver Intl

10:00 - 14:46BNE Brisbane-PDX Portland

21h 46m1 stop Vancouver Intl

$1,362Air Canada

Wed, 9 Sep - Wed, 30 Sep

10:10 - 20:05PDX Portland-AVV Melbourne Avalon

40h 55m2 stops Vancouver Intl Brisbane

20:40 - 09:31AVV Melbourne Avalon-PDX Portland

29h 51m2 stops Brisbane Vancouver Intl

$1,400Multiple Airlines

Sun, 16 Aug - Sat, 22 Aug

10:10 - 20:05PDX Portland-AVV Melbourne Avalon

40h 55m2 stops Vancouver Intl Brisbane

20:40 - 14:51AVV Melbourne Avalon-PDX Portland

35h 11m2 stops Brisbane Vancouver Intl

$1,402Multiple Airlines

Sun, 16 Aug - Sat, 22 Aug

13:39 - 07:30PDX Portland-BNE Brisbane

23h 51m1 stop San Francisco

11:40 - 14:27BNE Brisbane-PDX Portland

20h 47m1 stop San Francisco

$1,683United Airlines

Thu, 21 Jan - Mon, 8 Feb

15:30 - 07:30PDX Portland-BNE Brisbane

22h 00m1 stop San Francisco

11:40 - 17:38BNE Brisbane-PDX Portland

23h 58m2 stops San Francisco Denver Intl

$1,683United Airlines

Thu, 21 Jan - Thu, 4 Feb

Cheap last-minute flights

Enter your travel dates to find the best prices.

10:10 - 07:05PDX Portland-BNE Brisbane

27h 55m1 stop Vancouver Intl

20:45 - 14:51BNE Brisbane-PDX Portland

35h 06m2 stops Sydney Kingsford Smith Vancouver Intl

$1,523Air Canada

Sun, 9 Aug - Sun, 23 Aug

07:46 - 18:50PDX Portland-SYD Sydney Kingsford Smith

18h 04m1 stop Honolulu

20:45 - 06:11SYD Sydney Kingsford Smith-PDX Portland

26h 26m1 stop Honolulu

$1,603Alaska Airlines

Fri, 7 Aug - Sun, 9 Aug

19:45 - 08:30PDX Portland-BNE Brisbane

43h 45m2 stops Vancouver Intl Sydney Kingsford Smith

20:05 - 09:31BNE Brisbane-PDX Portland

30h 26m2 stops Sydney Kingsford Smith Vancouver Intl

$1,653Air Canada

Sun, 9 Aug - Sun, 23 Aug

19:45 - 07:20PDX Portland-SYD Sydney Kingsford Smith

18h 35m1 stop Vancouver Intl

09:20 - 09:31SYD Sydney Kingsford Smith-PDX Portland

17h 11m1 stop Vancouver Intl

$1,657Air Canada

Mon, 10 Aug - Tue, 18 Aug

19:45 - 07:20PDX Portland-SYD Sydney Kingsford Smith

18h 35m1 stop Vancouver Intl

06:00 - 09:31SYD Sydney Kingsford Smith-PDX Portland

20h 31m2 stops Brisbane Vancouver Intl

$1,687Multiple Airlines

Mon, 10 Aug - Tue, 18 Aug

21:27 - 11:50PDX Portland-SYD Sydney Kingsford Smith

45h 23m2 stops Los Angeles Los Angeles Nadi

13:15 - 22:00SYD Sydney Kingsford Smith-PDX Portland

25h 45m2 stops Nadi Los Angeles Los Angeles

$1,716Multiple Airlines

Mon, 10 Aug - Tue, 18 Aug

14:49 - 06:25PDX Portland-SYD Sydney Kingsford Smith

22h 36m1 stop San Francisco

21:50 - 23:59SYD Sydney Kingsford Smith-PDX Portland

43h 09m2 stops Brisbane Los Angeles Los Angeles

$1,726Qantas Airways

Fri, 7 Aug - Sun, 9 Aug

13:14 - 08:15PDX Portland-MEL Melbourne

26h 01m1 stop San Francisco

10:55 - 14:47MEL Melbourne-PDX Portland

20h 52m1 stop San Francisco

$1,750United Airlines

Sat, 8 Aug - Wed, 12 Aug

13:14 - 08:15PDX Portland-MEL Melbourne

26h 01m1 stop San Francisco

10:55 - 14:47MEL Melbourne-PDX Portland

20h 52m1 stop San Francisco

$1,751United Airlines

Sat, 8 Aug - Wed, 12 Aug

11:05 - 08:15PDX Portland-MEL Melbourne

28h 10m2 stops Denver Intl San Francisco

09:30 - 18:19MEL Melbourne-PDX Portland

25h 49m3 stops Los Angeles Los Angeles Denver Intl San Francisco

$1,755United Airlines

Sat, 8 Aug - Wed, 12 Aug

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Alaska Airlines flights from Portland to Australia

Our best Alaska Airlines deals on Portland to Australia flight tickets

Alaska Airlines

26 Oct

PDX08:00Portland

17h 45m

1 stop

SYD19:45Sydney Kingsford Smith

24 Nov

SYD21:40Sydney Kingsford Smith

18h 09m

1 stop

PDX20:49Portland

$1,540

Alaska Airlines

17 Aug

PDX07:46Portland

18h 04m

1 stop

SYD18:50Sydney Kingsford Smith

23 Aug

SYD20:45Sydney Kingsford Smith

26h 29m

1 stop

PDX06:14Portland

$1,541

Alaska Airlines

26 Aug

PDX08:00Portland

17h 50m

1 stop

SYD18:50Sydney Kingsford Smith

8 Sept

SYD20:45Sydney Kingsford Smith

26h 29m

1 stop

PDX06:14Portland

$1,544

Air Canada flights from Portland to Australia

Our best Air Canada deals on Portland to Australia flight tickets

Air Canada

31 Aug

PDX15:30Portland

22h 35m

1 stop

BNE07:05Brisbane

18 Nov

BNE10:45Brisbane

25h 46m

1 stop

PDX18:31Portland

$1,362

Air Canada

31 Aug

PDX15:30Portland

22h 35m

1 stop

BNE07:05Brisbane

18 Nov

BNE10:45Brisbane

25h 46m

1 stop

PDX18:31Portland

$1,363

Air Canada

25 Oct

PDX19:10Portland

19h 35m

1 stop

BNE07:45Brisbane

25 Nov

BNE10:45Brisbane

21h 56m

1 stop

PDX14:41Portland

$1,376

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PortlandBrisbane

PDX Portland - BNE Brisbane

PDXBNE

Portland

Tue 20/10

10:10-07:05

1 stop27h 55m

Brisbane

Tue 3/11

10:45-09:26

1 stop16h 41m

$1,362

PortlandBrisbane

PDX Portland - BNE Brisbane

PDXBNE

Portland

Sat 31/10

10:00-08:45

1 stop29h 45m

Brisbane

Sun 8/11

10:45-18:31

1 stop25h 46m

$1,362

PortlandBrisbane

PDX Portland - BNE Brisbane

PDXBNE

Portland

Mon 2/11

19:10-08:45

1 stop19h 35m

Brisbane

Mon 16/11

10:45-18:31

1 stop25h 46m

$1,362

PortlandBrisbane

PDX Portland - BNE Brisbane

PDXBNE

Portland

Mon 31/8

15:30-07:05

1 stop22h 35m

Brisbane

Wed 18/11

10:45-18:31

1 stop25h 46m

$1,362

Fastest return journey

PortlandBrisbane

PDX Portland - BNE Brisbane

PDXBNE

Portland

Mon 17/8

19:45-07:05

1 stop18h 20m

Brisbane

Sun 23/8

10:00-09:31

1 stop16h 31m

$1,362

PortlandBrisbane

PDX Portland - BNE Brisbane

PDXBNE

Portland

Wed 9/9

19:45-07:05

1 stop18h 20m

Brisbane

Wed 30/9

10:00-14:46

1 stop21h 46m

$1,362

PortlandMelbourne

PDX Portland - AVV Melbourne Avalon

PDXAVV

Portland

Sun 16/8

10:10-20:05

2 stops40h 55m

Melbourne Avalon

Sat 22/8

20:40-09:31

2 stops29h 51m

$1,400

PortlandMelbourne

PDX Portland - AVV Melbourne Avalon

PDXAVV

Portland

Sun 16/8

10:10-20:05

2 stops40h 55m

Melbourne Avalon

Sat 22/8

20:40-14:51

2 stops35h 11m

$1,402

PortlandBrisbane

PDX Portland - BNE Brisbane

PDXBNE

Portland

Thu 21/1

13:39-07:30

1 stop23h 51m

Brisbane

Mon 8/2

11:40-14:27

1 stop20h 47m

$1,683

PortlandBrisbane

PDX Portland - BNE Brisbane

PDXBNE

Portland

Thu 21/1

15:30-07:30

1 stop22h 00m

Brisbane

Thu 4/2

11:40-17:38

2 stops23h 58m

$1,683

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, February 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 $1,507. If you don’t want to visit Australia in February, then you should wait until June to fly from Portland, when ticket prices are also cheap, with an average price of $1,544.

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 $1,736 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 $1,453 on momondo.

Can stopping save me money on Portland to Australia flights?

You could potentially save up to 32% 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

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 August 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 $728	Free cancellation	Rating 7.4 10,073 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.