Which airlines fly to Australia?

United Airlines, Qantas Airways and Air Canada 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?

United Airlines, Qantas Airways, and Air Canada 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.

$809 Cheap Flights from Portland to Australia in 2026/27

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.

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

22h 35m1 stop Vancouver Intl

10:45 - 19:31BNE Brisbane-PDX Portland

25h 46m1 stop Vancouver Intl

$1,448Air Canada

Sun, 18 Oct - Sun, 1 Nov

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

19h 35m1 stop Vancouver Intl

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

16h 41m1 stop Vancouver Intl

$1,448Air Canada

Mon, 8 Feb - Mon, 22 Feb

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

19h 35m1 stop Vancouver Intl

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

27h 00m1 stop Vancouver Intl

$1,450Air Canada

Sun, 28 Feb - Sun, 14 Mar

10:48 - 12:25PDX Portland-MEL Melbourne

31h 37m2 stops Los Angeles Nadi

13:45 - 18:43MEL Melbourne-PDX Portland

23h 58m2 stops Nadi Los Angeles

$1,507Multiple Airlines

Wed, 28 Oct - Wed, 4 Nov

19:10 - 13:35PDX Portland-MEL Melbourne

23h 25m2 stops Vancouver Intl Sydney Kingsford Smith

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

22h 21m2 stops Brisbane Vancouver Intl

$1,514Multiple Airlines

Mon, 15 Feb - Mon, 22 Feb

19:10 - 14:05PDX Portland-ADL Adelaide

24h 25m2 stops Vancouver Intl Sydney Kingsford Smith

06:10 - 18:31ADL Adelaide-PDX Portland

30h 51m2 stops Brisbane Vancouver Intl

$1,517Multiple Airlines

Tue, 10 Nov - Tue, 17 Nov

17:18 - 06:25PDX Portland-SYD Sydney Kingsford Smith

19h 07m1 stop Los Angeles

11:10 - 11:50SYD Sydney Kingsford Smith-PDX Portland

18h 40m1 stop Los Angeles

$1,607Qantas Airways

Sun, 25 Oct - Sun, 1 Nov

10:59 - 09:20PDX Portland-SYD Sydney Kingsford Smith

27h 21m1 stop San Francisco

11:50 - 12:22SYD Sydney Kingsford Smith-PDX Portland

19h 32m1 stop San Francisco

$1,628United Airlines

Mon, 9 Nov - Mon, 16 Nov

10:59 - 09:20PDX Portland-SYD Sydney Kingsford Smith

27h 21m1 stop San Francisco

11:20 - 09:36SYD Sydney Kingsford Smith-PDX Portland

41h 16m2 stops Los Angeles Denver Intl

$1,633United Airlines

Tue, 10 Nov - Tue, 17 Nov

17:18 - 08:05PDX Portland-SYD Sydney Kingsford Smith

20h 47m1 stop Los Angeles

11:10 - 10:50SYD Sydney Kingsford Smith-PDX Portland

18h 40m1 stop Los Angeles

$1,684Qantas Airways

Fri, 23 Oct - Mon, 2 Nov

Cheap last-minute flights

Enter your travel dates to find the best prices.

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

17h 50m1 stop Honolulu

18:50 - 20:33SYD Sydney Kingsford Smith-PDX Portland

19h 43m1 stop Los Angeles

$2,127Multiple Airlines

Wed, 30 Sep - Wed, 7 Oct

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

17h 50m1 stop Honolulu

18:50 - 23:16SYD Sydney Kingsford Smith-PDX Portland

22h 26m1 stop Los Angeles

$2,129Multiple Airlines

Thu, 1 Oct - Thu, 8 Oct

06:30 - 07:05PDX Portland-SYD Sydney Kingsford Smith

31h 35m1 stop Los Angeles

17:10 - 23:16SYD Sydney Kingsford Smith-PDX Portland

24h 06m2 stops Brisbane Los Angeles

$2,168Qantas Airways

Thu, 1 Oct - Thu, 8 Oct

23:59 - 08:30PDX Portland-MEL Melbourne

38h 31m2 stops Houston George Bush Intcntl Los Angeles

11:55 - 21:10MEL Melbourne-PDX Portland

27h 15m2 stops San Francisco Denver Intl

$2,203United Airlines

Sun, 4 Oct - Sat, 10 Oct

13:53 - 07:05PDX Portland-SYD Sydney Kingsford Smith

24h 12m1 stop Los Angeles

18:50 - 23:16SYD Sydney Kingsford Smith-PDX Portland

22h 26m1 stop Los Angeles

$2,203Multiple Airlines

Thu, 1 Oct - Thu, 8 Oct

07:00 - 09:15PDX Portland-MEL Melbourne

32h 15m1 stop San Francisco

11:55 - 18:31MEL Melbourne-PDX Portland

24h 36m1 stop San Francisco

$2,209United Airlines

Sun, 4 Oct - Fri, 9 Oct

09:00 - 09:15PDX Portland-MEL Melbourne

30h 15m1 stop San Francisco

11:55 - 21:10MEL Melbourne-PDX Portland

27h 15m2 stops San Francisco Denver Intl

$2,215United Airlines

Sun, 4 Oct - Tue, 13 Oct

13:49 - 06:50PDX Portland-SYD Sydney Kingsford Smith

24h 01m1 stop Los Angeles

10:15 - 12:11SYD Sydney Kingsford Smith-PDX Portland

19h 56m1 stop Los Angeles

$2,225Delta

Thu, 1 Oct - Thu, 8 Oct

19:29 - 06:55PDX Portland-SYD Sydney Kingsford Smith

18h 26m1 stop San Francisco

11:20 - 18:31SYD Sydney Kingsford Smith-PDX Portland

25h 11m1 stop San Francisco

$2,225United Airlines

Thu, 1 Oct - Thu, 8 Oct

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

18h 20m1 stop Vancouver Intl

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

21h 46m1 stop Vancouver Intl

$2,764Air Canada

Wed, 30 Sep - Tue, 6 Oct

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Qantas Airways flights from Portland to Australia

Our best Qantas Airways deals on Portland to Australia flight tickets

Qantas Airways

25 Oct

PDX17:18Portland

19h 07m

1 stop

SYD06:25Sydney Kingsford Smith

1 Nov

SYD11:10Sydney Kingsford Smith

18h 40m

1 stop

PDX11:50Portland

$1,607

Qantas Airways

23 Oct

PDX17:18Portland

20h 47m

1 stop

SYD08:05Sydney Kingsford Smith

2 Nov

SYD11:10Sydney Kingsford Smith

18h 40m

1 stop

PDX10:50Portland

$1,684

Qantas Airways

18 Feb

PDX17:40Portland

21h 40m

2 stops

SYD10:20Sydney Kingsford Smith

3 Mar

SYD21:25Sydney Kingsford Smith

18h 23m

1 stop

PDX20:48Portland

$1,739

United Airlines flights from Portland to Australia

Our best United Airlines deals on Portland to Australia flight tickets

United Airlines

1 Nov

PDX19:15Portland

40h 45m

2 stops

SYD07:00Sydney Kingsford Smith

9 Nov

SYD09:15Sydney Kingsford Smith

21h 58m

1 stop

PDX12:13Portland

$1,633

United Airlines

28 Oct

PDX19:26Portland

20h 04m

1 stop

MEL09:30Melbourne

4 Nov

MEL12:45Melbourne

27h 17m

1 stop

PDX21:02Portland

$1,634

United Airlines

11 Nov

PDX19:26Portland

20h 04m

1 stop

MEL10:30Melbourne

18 Nov

MEL11:30Melbourne

28h 43m

2 stops

PDX21:13Portland

$1,640

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PortlandBrisbane

PDX Portland - BNE Brisbane

PDXBNE

Portland

Sun 18/10

15:30-07:05

1 stop22h 35m

Brisbane

Sun 1/11

10:45-19:31

1 stop25h 46m

$1,448

Fastest return journey

PortlandBrisbane

PDX Portland - BNE Brisbane

PDXBNE

Portland

Mon 8/2

19:10-08:45

1 stop19h 35m

Brisbane

Mon 22/2

10:45-09:26

1 stop16h 41m

$1,448

PortlandBrisbane

PDX Portland - BNE Brisbane

PDXBNE

Portland

Sun 28/2

19:10-08:45

1 stop19h 35m

Brisbane

Sun 14/3

10:45-19:45

1 stop27h 00m

$1,450

PortlandMelbourne

PDX Portland - MEL Melbourne

PDXMEL

Portland

Wed 28/10

10:48-12:25

2 stops31h 37m

Melbourne

Wed 4/11

13:45-18:43

2 stops23h 58m

$1,507

PortlandMelbourne

PDX Portland - MEL Melbourne

PDXMEL

Portland

Mon 15/2

19:10-13:35

2 stops23h 25m

Melbourne

Mon 22/2

06:05-09:26

2 stops22h 21m

$1,514

PortlandAdelaide

PDX Portland - ADL Adelaide

PDXADL

Portland

Tue 10/11

19:10-14:05

2 stops24h 25m

Adelaide

Tue 17/11

06:10-18:31

2 stops30h 51m

$1,517

PortlandSydney

PDX Portland - SYD Sydney Kingsford Smith

PDXSYD

Portland

Sun 25/10

17:18-06:25

1 stop19h 07m

Sydney Kingsford Smith

Sun 1/11

11:10-11:50

1 stop18h 40m

$1,607

PortlandSydney

PDX Portland - SYD Sydney Kingsford Smith

PDXSYD

Portland

Mon 9/11

10:59-09:20

1 stop27h 21m

Sydney Kingsford Smith

Mon 16/11

11:50-12:22

1 stop19h 32m

$1,628

PortlandSydney

PDX Portland - SYD Sydney Kingsford Smith

PDXSYD

Portland

Tue 10/11

10:59-09:20

1 stop27h 21m

Sydney Kingsford Smith

Tue 17/11

11:20-09:36

2 stops41h 16m

$1,633

PortlandSydney

PDX Portland - SYD Sydney Kingsford Smith

PDXSYD

Portland

Fri 23/10

17:18-08:05

1 stop20h 47m

Sydney Kingsford Smith

Mon 2/11

11:10-10:50

1 stop18h 40m

$1,684

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 $1,516. If you don’t want to visit Australia in June, then you should wait until April to fly from Portland, when ticket prices are also cheap, with an average price of $1,601.

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 $1,782 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 $1,470 on momondo.

Can stopping save me money on Portland to Australia flights?

You could potentially save up to 38% 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	$809
Fastest flight time	17h 45m
Direct flights	None

The best one-way flight to Australia from Portland in the past 72 hours is $809. The best return flight deal from Portland to Australia found on momondo in the last 72 hours is $1,448.

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 $733	Free cancellation	Rating 7.4 10,258 reviews	Search United Airlines flights
Air Canada	PriceFrom $1,269	Free cancellation	Rating 7.1 11,705 reviews	Search Air Canada flights
Qantas Airways	PriceFrom $1,271	Free cancellation	Rating 7.5 1,102 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.