Which airlines fly to Australia?

United Airlines, Air Canada and Qantas Airways are the top three most popular airlines that fly to Australia from Portland according to our data. United Airlines is the first choice among our users, with 69% of people opting to fly with this airline when travelling to Australia. Keep in mind that there are 3 different airlines that fly to Australia on a routine basis, so you have a few additional options to choose from.

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

Alaska Airlines, Air Canada, 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 August 2026, there are 3 operators 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.

$793 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

$1,360Air 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

$1,360Air 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

$1,360Air Canada

Mon, 2 Nov - Mon, 16 Nov

19:45 - 12:30PDX Portland-MEL Melbourne

23h 45m2 stops Vancouver Intl Brisbane

06:00 - 09:31MEL Melbourne-PDX Portland

20h 31m2 stops Brisbane Vancouver Intl

$1,418Multiple Airlines

Mon, 14 Sep - Wed, 23 Sep

19:10 - 14:15PDX Portland-MEL Melbourne

24h 05m2 stops Vancouver Intl Brisbane

06:05 - 09:26MEL Melbourne-PDX Portland

22h 21m2 stops Brisbane Vancouver Intl

$1,425Multiple Airlines

Sun, 1 Nov - Sun, 8 Nov

19:10 - 13:50PDX Portland-MEL Melbourne

23h 40m2 stops Vancouver Intl Brisbane

06:05 - 09:26MEL Melbourne-PDX Portland

22h 21m2 stops Brisbane Vancouver Intl

$1,435Multiple Airlines

Sun, 1 Nov - Sun, 8 Nov

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

22h 00m1 stop San Francisco

10:30 - 18:31BNE Brisbane-PDX Portland

25h 01m1 stop San Francisco

$1,596United Airlines

Sat, 23 Jan - Sun, 18 Apr

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

23h 51m1 stop San Francisco

10:30 - 18:31BNE Brisbane-PDX Portland

25h 01m1 stop San Francisco

$1,596United Airlines

Sat, 23 Jan - Sun, 23 May

14:30 - 06:25PDX Portland-SYD Sydney Kingsford Smith

20h 55m1 stop San Francisco

11:05 - 13:26SYD Sydney Kingsford Smith-PDX Portland

21h 21m2 stops Brisbane Los Angeles

$1,625Qantas Airways

Fri, 29 Jan - Mon, 8 Feb

14:53 - 06:25PDX Portland-SYD Sydney Kingsford Smith

21h 32m1 stop San Francisco

21:50 - 13:50SYD Sydney Kingsford Smith-PDX Portland

35h 00m2 stops Brisbane Los Angeles

$1,791Qantas Airways

Wed, 28 Oct - Sun, 1 Nov

Cheap last-minute flights

Enter your travel dates to find the best prices.

10:10 - 14:20PDX Portland-MEL Melbourne

35h 10m2 stops Vancouver Intl Brisbane

19:30 - 09:31MEL Melbourne-PDX Portland

31h 01m2 stops Sydney Kingsford Smith Vancouver Intl

$1,425Multiple Airlines

Sun, 16 Aug - Sat, 22 Aug

19:45 - 11:20PDX Portland-MEL Melbourne

22h 35m2 stops Vancouver Intl Sydney Kingsford Smith

06:00 - 09:31MEL Melbourne-PDX Portland

20h 31m2 stops Sydney Kingsford Smith Vancouver Intl

$1,428Multiple Airlines

Mon, 17 Aug - Tue, 25 Aug

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

18h 04m1 stop Honolulu

20:45 - 06:14SYD Sydney Kingsford Smith-PDX Portland

26h 29m1 stop Honolulu

$1,537Alaska Airlines

Mon, 17 Aug - Sun, 30 Aug

10:30 - 18:50PDX Portland-SYD Sydney Kingsford Smith

39h 20m1 stop Honolulu

20:45 - 06:14SYD Sydney Kingsford Smith-PDX Portland

26h 29m1 stop Honolulu

$1,561Alaska Airlines

Sun, 16 Aug - Sun, 23 Aug

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

$1,564Multiple Airlines

Sun, 16 Aug - Sat, 22 Aug

14:39 - 06:45PDX Portland-MEL Melbourne

23h 06m1 stop Los Angeles

09:45 - 13:25MEL Melbourne-PDX Portland

20h 40m1 stop Los Angeles

$1,673Qantas Airways

Thu, 13 Aug - Wed, 26 Aug

13:03 - 08:15PDX Portland-MEL Melbourne

26h 12m1 stop San Francisco

10:55 - 18:19MEL Melbourne-PDX Portland

24h 24m1 stop San Francisco

$1,747United Airlines

Thu, 13 Aug - Fri, 4 Sep

10:50 - 08:15PDX Portland-MEL Melbourne

28h 25m2 stops Denver Intl San Francisco

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

20h 52m1 stop San Francisco

$1,752United Airlines

Thu, 13 Aug - Fri, 4 Sep

19:15 - 08:15PDX Portland-MEL Melbourne

20h 00m1 stop San Francisco

07:00 - 10:11MEL Melbourne-PDX Portland

20h 11m2 stops Sydney Kingsford Smith San Francisco

$1,766United Airlines

Sun, 16 Aug - Sat, 22 Aug

05:00 - 08:15PDX Portland-MEL Melbourne

34h 15m2 stops Denver Intl San Francisco

07:00 - 10:11MEL Melbourne-PDX Portland

20h 11m2 stops Sydney Kingsford Smith San Francisco

$1,774United Airlines

Sun, 16 Aug - Sat, 22 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 Aug

PDX08:00Portland

17h 50m

1 stop

SYD18:50Sydney Kingsford Smith

30 Aug

SYD20:45Sydney Kingsford Smith

26h 29m

1 stop

PDX06:14Portland

$1,487

Alaska Airlines

17 Aug

PDX07:46Portland

18h 04m

1 stop

SYD18:50Sydney Kingsford Smith

30 Aug

SYD20:45Sydney Kingsford Smith

26h 29m

1 stop

PDX06:14Portland

$1,537

Alaska Airlines

3 Nov

PDX10:30Portland

38h 15m

1 stop

SYD19:45Sydney Kingsford Smith

17 Nov

SYD21:40Sydney Kingsford Smith

18h 09m

1 stop

PDX20:49Portland

$1,538

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

$1,360

Air Canada

15 Sept

PDX15:30Portland

22h 35m

1 stop

BNE07:05Brisbane

6 Oct

BNE10:00Brisbane

16h 31m

1 stop

PDX09:31Portland

$1,374

Air Canada

15 Sept

PDX19:45Portland

18h 20m

1 stop

BNE07:05Brisbane

6 Oct

BNE05:05Brisbane

26h 46m

2 stops

PDX14:51Portland

$1,407

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

$1,360

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

$1,360

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

$1,360

PortlandMelbourne

PDX Portland - MEL Melbourne

PDXMEL

Portland

Mon 14/9

19:45-12:30

2 stops23h 45m

Melbourne

Wed 23/9

06:00-09:31

2 stops20h 31m

$1,418

PortlandMelbourne

PDX Portland - MEL Melbourne

PDXMEL

Portland

Sun 1/11

19:10-14:15

2 stops24h 05m

Melbourne

Sun 8/11

06:05-09:26

2 stops22h 21m

$1,425

PortlandMelbourne

PDX Portland - MEL Melbourne

PDXMEL

Portland

Sun 1/11

19:10-13:50

2 stops23h 40m

Melbourne

Sun 8/11

06:05-09:26

2 stops22h 21m

$1,435

PortlandBrisbane

PDX Portland - BNE Brisbane

PDXBNE

Portland

Sat 23/1

15:30-07:30

1 stop22h 00m

Brisbane

Sun 18/4

10:30-18:31

1 stop25h 01m

$1,596

PortlandBrisbane

PDX Portland - BNE Brisbane

PDXBNE

Portland

Sat 23/1

13:39-07:30

1 stop23h 51m

Brisbane

Sun 23/5

10:30-18:31

1 stop25h 01m

$1,596

Fastest return journey

PortlandSydney

PDX Portland - SYD Sydney Kingsford Smith

PDXSYD

Portland

Fri 29/1

14:30-06:25

1 stop20h 55m

Sydney Kingsford Smith

Mon 8/2

11:05-13:26

2 stops21h 21m

$1,625

PortlandSydney

PDX Portland - SYD Sydney Kingsford Smith

PDXSYD

Portland

Wed 28/10

14:53-06:25

1 stop21h 32m

Sydney Kingsford Smith

Sun 1/11

21:50-13:50

2 stops35h 00m

$1,791

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 $1,503. 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 $1,519.

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 $1,749 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 $1,221 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 41m
Direct flights	None

The fastest flight from Portland to Australia takes 17h 41m

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 are 3 operators 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 10,111 reviews	Search United Airlines flights
Air Canada	PriceFrom $1,257	Free cancellation	Rating 7.1 11,465 reviews	Search Air Canada flights
Qantas Airways	PriceFrom $1,259	Free cancellation	Rating 7.5 1,081 reviews	Search Qantas Airways 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.