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?

American Airlines, United Airlines, and Alaska 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 September 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.

$742 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.

19:45 - 12:20PDX Portland-MEL Melbourne

22h 35m2 stops Vancouver Intl Brisbane

06:15 - 09:31MEL Melbourne-PDX Portland

21h 16m2 stops Brisbane Vancouver Intl

$1,247Air Canada

Mon, 12 Oct - Mon, 19 Oct

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

29h 45m1 stop Vancouver Intl

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

25h 46m1 stop Vancouver Intl

$1,281Air 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

$1,281Air Canada

Mon, 2 Nov - Mon, 16 Nov

15:15 - 13:35PDX Portland-MEL Melbourne

27h 20m2 stops Vancouver Intl Sydney Kingsford Smith

08:10 - 09:25MEL Melbourne-PDX Portland

20h 15m2 stops Brisbane Vancouver Intl

$1,298Multiple Airlines

Sun, 28 Feb - Tue, 9 Mar

15:30 - 15:20PDX Portland-AVV Melbourne Avalon

29h 50m2 stops Vancouver Intl Brisbane

20:55 - 09:31AVV Melbourne Avalon-PDX Portland

30h 36m2 stops Sydney Kingsford Smith Vancouver Intl

$1,327Multiple Airlines

Mon, 12 Oct - Mon, 19 Oct

19:45 - 12:10PDX Portland-MEL Melbourne

22h 25m2 stops Vancouver Intl Sydney Kingsford Smith

08:10 - 09:26MEL Melbourne-PDX Portland

20h 16m2 stops Brisbane Vancouver Intl

$1,332Multiple Airlines

Sun, 18 Oct - Wed, 11 Nov

17:40 - 20:50PDX Portland-SYD Sydney Kingsford Smith

32h 10m2 stops Los Angeles Los Angeles Auckland Intl

11:20 - 17:20SYD Sydney Kingsford Smith-PDX Portland

24h 00m1 stop Los Angeles Los Angeles

$1,408Qantas Airways

Tue, 23 Feb - Tue, 16 Mar

17:40 - 20:50PDX Portland-SYD Sydney Kingsford Smith

32h 10m2 stops Los Angeles Los Angeles Auckland Intl

11:20 - 17:20SYD Sydney Kingsford Smith-PDX Portland

24h 00m1 stop Los Angeles Los Angeles

$1,409Qantas Airways

Tue, 23 Feb - Tue, 16 Mar

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

32h 15m2 stops Denver Intl San Francisco

10:30 - 22:38BNE Brisbane-PDX Portland

29h 08m2 stops San Francisco Denver Intl

$1,554United Airlines

Sat, 23 Jan - Sun, 23 May

15:36 - 06:30PDX Portland-BNE Brisbane

21h 54m1 stop San Francisco

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

16h 40m1 stop San Francisco

$1,571United Airlines

Sun, 20 Sep - Wed, 21 Oct

Cheap last-minute flights

Enter your travel dates to find the best prices.

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

22h 35m1 stop Vancouver Intl

10:15 - 14:46BNE Brisbane-PDX Portland

21h 31m1 stop Vancouver Intl

$1,295Air Canada

Mon, 7 Sep - Thu, 10 Sep

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

18h 20m1 stop Vancouver Intl

20:45 - 14:46BNE Brisbane-PDX Portland

35h 01m2 stops Sydney Kingsford Smith Vancouver Intl

$1,325Air Canada

Mon, 7 Sep - Thu, 10 Sep

08:00 - 18:50PDX Portland-SYD Sydney Kingsford Smith

17h 50m1 stop Honolulu

20:45 - 20:50SYD Sydney Kingsford Smith-PDX Portland

17h 05m1 stop Honolulu

$1,544Alaska Airlines

Fri, 4 Sep - Sun, 13 Sep

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

$1,544Air Canada

Sun, 6 Sep - Sun, 20 Sep

19:45 - 11:55PDX Portland-SYD Sydney Kingsford Smith

23h 10m2 stops Vancouver Intl Brisbane

09:20 - 19:11SYD Sydney Kingsford Smith-PDX Portland

26h 51m1 stop Vancouver Intl

$1,549Multiple Airlines

Sun, 6 Sep - Sun, 20 Sep

19:45 - 11:55PDX Portland-SYD Sydney Kingsford Smith

23h 10m2 stops Vancouver Intl Brisbane

09:20 - 19:11SYD Sydney Kingsford Smith-PDX Portland

26h 51m1 stop Vancouver Intl

$1,574Multiple Airlines

Sun, 6 Sep - Sun, 20 Sep

14:53 - 10:55PDX Portland-SYD Sydney Kingsford Smith

27h 02m2 stops Los Angeles Los Angeles Brisbane

17:10 - 23:59SYD Sydney Kingsford Smith-PDX Portland

23h 49m2 stops Brisbane Los Angeles Los Angeles

$2,217Qantas Airways

Sun, 6 Sep - Tue, 8 Sep

07:03 - 12:05PDX Portland-PER Perth

38h 02m2 stops Los Angeles Los Angeles Brisbane

16:00 - 22:06PER Perth-PDX Portland

45h 06m2 stops Brisbane Los Angeles Los Angeles

$2,439Qantas Airways

Sun, 6 Sep - Tue, 8 Sep

10:50 - 07:00PDX Portland-SYD Sydney Kingsford Smith

27h 10m2 stops Denver Intl Los Angeles Los Angeles

09:30 - 18:19SYD Sydney Kingsford Smith-PDX Portland

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

$3,291United Airlines

Fri, 4 Sep - Sun, 13 Sep

12:45 - 07:00PDX Portland-SYD Sydney Kingsford Smith

25h 15m2 stops Denver Intl Los Angeles Los Angeles

09:30 - 18:19SYD Sydney Kingsford Smith-PDX Portland

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

$3,292United Airlines

Fri, 4 Sep - Sun, 13 Sep

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

Alaska Airlines flights from Portland to Australia

Our best Alaska Airlines deals on Portland to Australia flight tickets

Alaska Airlines

23 Feb

PDX17:50Portland

30h 55m

1 stop

SYD19:45Sydney Kingsford Smith

16 Mar

SYD21:40Sydney Kingsford Smith

26h 20m

1 stop

PDX06:00Portland

$1,519

Alaska Airlines

26 Oct

PDX08:00Portland

17h 45m

1 stop

SYD19:45Sydney Kingsford Smith

30 Oct

SYD21:40Sydney Kingsford Smith

17h 09m

1 stop

PDX20:49Portland

$1,540

Alaska Airlines

4 Sept

PDX08:00Portland

17h 50m

1 stop

SYD18:50Sydney Kingsford Smith

13 Sept

SYD20:45Sydney Kingsford Smith

17h 05m

1 stop

PDX20:50Portland

$1,544

Air Canada flights from Portland to Australia

Our best Air Canada deals on Portland to Australia flight tickets

Air Canada

12 Oct

PDX19:45Portland

22h 35m

2 stops

MEL12:20Melbourne

19 Oct

MEL06:15Melbourne

21h 16m

2 stops

PDX09:31Portland

$1,247

Air Canada

2 Nov

PDX19:10Portland

19h 35m

1 stop

BNE08:45Brisbane

16 Nov

BNE10:45Brisbane

25h 46m

1 stop

PDX18:31Portland

$1,281

Air Canada

8 Feb

PDX19:10Portland

19h 35m

1 stop

BNE08:45Brisbane

22 Feb

BNE10:45Brisbane

16h 41m

1 stop

PDX09:26Portland

$1,283

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PortlandMelbourne

PDX Portland - MEL Melbourne

PDXMEL

Portland

Mon 12/10

19:45-12:20

2 stops22h 35m

Melbourne

Mon 19/10

06:15-09:31

2 stops21h 16m

$1,247

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

$1,281

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

$1,281

PortlandMelbourne

PDX Portland - MEL Melbourne

PDXMEL

Portland

Sun 28/2

15:15-13:35

2 stops27h 20m

Melbourne

Tue 9/3

08:10-09:25

2 stops20h 15m

$1,298

PortlandMelbourne

PDX Portland - AVV Melbourne Avalon

PDXAVV

Portland

Mon 12/10

15:30-15:20

2 stops29h 50m

Melbourne Avalon

Mon 19/10

20:55-09:31

2 stops30h 36m

$1,327

PortlandMelbourne

PDX Portland - MEL Melbourne

PDXMEL

Portland

Sun 18/10

19:45-12:10

2 stops22h 25m

Melbourne

Wed 11/11

08:10-09:26

2 stops20h 16m

$1,332

PortlandSydney

PDX Portland - SYD Sydney Kingsford Smith

PDXSYD

Portland

Tue 23/2

17:40-20:50

2 stops32h 10m

Sydney Kingsford Smith

Tue 16/3

11:20-17:20

1 stop24h 00m

$1,408

PortlandSydney

PDX Portland - SYD Sydney Kingsford Smith

PDXSYD

Portland

Tue 23/2

17:40-20:50

2 stops32h 10m

Sydney Kingsford Smith

Tue 16/3

11:20-17:20

1 stop24h 00m

$1,409

PortlandBrisbane

PDX Portland - BNE Brisbane

PDXBNE

Portland

Sat 23/1

05:15-07:30

2 stops32h 15m

Brisbane

Sun 23/5

10:30-22:38

2 stops29h 08m

$1,554

Fastest return journey

PortlandBrisbane

PDX Portland - BNE Brisbane

PDXBNE

Portland

Sun 20/9

15:36-06:30

1 stop21h 54m

Brisbane

Wed 21/10

10:30-10:10

1 stop16h 40m

$1,571

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, June 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 $1,492. If you don’t want to visit Australia in June, then you should wait until February to fly from Portland, when ticket prices are also cheap, with an average price of $1,514.

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 $1,728 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 $1,199 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

Best price found	$742
Fastest flight time	17h 45m
Direct flights	None

The best one-way flight to Australia from Portland in the past 72 hours is $742. The best return flight deal from Portland to Australia found on momondo in the last 72 hours is $1,247.

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 September 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 $713	Free cancellation	Rating 7.4 10,160 reviews	Search United Airlines flights
Air Canada	PriceFrom $1,235	Free cancellation	Rating 7.1 11,576 reviews	Search Air Canada flights
Qantas Airways	PriceFrom $1,237	Free cancellation	Rating 7.5 1,088 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.