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

United Airlines, Delta, 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 June 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.

$835 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 - 07:05

PDX

BNE

27h 55m

1 stop

10:45 - 09:26

BNE

PDX

16h 41m

1 stop

$1,463Air Canada

Tue, 20 Oct - Tue, 3 Nov

10:10 - 07:05

PDX

BNE

27h 55m

1 stop

10:45 - 09:26

BNE

PDX

16h 41m

1 stop

$1,465Air Canada

Tue, 20 Oct - Tue, 3 Nov

19:45 - 07:05

PDX

BNE

18h 20m

1 stop

06:10 - 09:26

BNE

PDX

21h 16m

2 stops

$1,501Multiple Airlines

Mon, 31 Aug - Wed, 18 Nov

19:10 - 08:45

PDX

BNE

20h 35m

1 stop

06:10 - 09:26

BNE

PDX

21h 16m

2 stops

$1,503Multiple Airlines

Sat, 31 Oct - Sun, 8 Nov

14:53 - 05:00

PDX

BNE

21h 07m

1 stop

20:35 - 21:55

BNE

PDX

18h 20m

1 stop

$1,513Qantas Airways

Sat, 5 Sep - Fri, 25 Sep

15:27 - 06:45

PDX

MEL

22h 18m

1 stop

13:35 - 23:09

MEL

PDX

26h 34m

1 stop

$1,527American Airlines

Wed, 1 Jul - Wed, 19 Aug

15:27 - 06:45

PDX

MEL

22h 18m

1 stop

09:45 - 16:51

MEL

PDX

24h 06m

2 stops

$1,534American Airlines

Wed, 1 Jul - Wed, 19 Aug

18:03 - 08:15

PDX

MEL

21h 12m

1 stop

10:55 - 22:54

MEL

PDX

28h 59m

2 stops

$1,535United Airlines

Thu, 30 Jul - Wed, 12 Aug

14:30 - 06:25

PDX

SYD

20h 55m

1 stop

08:55 - 17:28

SYD

PDX

27h 33m

2 stops

$1,541Qantas Airways

Thu, 26 Nov - Thu, 10 Dec

13:14 - 08:15

PDX

MEL

26h 01m

1 stop

10:55 - 12:00

MEL

PDX

18h 05m

1 stop

$1,542United Airlines

Wed, 1 Jul - Wed, 19 Aug

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American Airlines flights from Portland to Australia

Our best American Airlines deals on Portland to Australia flight tickets

American Airlines

1 July

PDX15:27Portland

22h 18m

1 stop

MEL06:45Melbourne

19 Aug

MEL13:35Melbourne

26h 34m

1 stop

PDX23:09Portland

$1,527

American Airlines

1 July

PDX15:27Portland

22h 18m

1 stop

MEL06:45Melbourne

19 Aug

MEL09:45Melbourne

24h 06m

2 stops

PDX16:51Portland

$1,534

American Airlines

29 July

PDX15:31Portland

22h 34m

2 stops

SYD07:05Sydney Kingsford Smith

5 Aug

SYD12:00Sydney Kingsford Smith

23h 59m

1 stop

PDX18:59Portland

$1,623

Qantas Airways flights from Portland to Australia

Our best Qantas Airways deals on Portland to Australia flight tickets

Qantas Airways

5 Sept

PDX14:53Portland

21h 07m

1 stop

BNE05:00Brisbane

25 Sept

BNE20:35Brisbane

18h 20m

1 stop

PDX21:55Portland

$1,513

Qantas Airways

26 Nov

PDX14:30Portland

20h 55m

1 stop

SYD06:25Sydney Kingsford Smith

10 Dec

SYD08:55Sydney Kingsford Smith

27h 33m

2 stops

PDX17:28Portland

$1,541

Qantas Airways

31 Aug

PDX17:55Portland

20h 10m

1 stop

SYD07:05Sydney Kingsford Smith

6 Oct

SYD10:10Sydney Kingsford Smith

21h 25m

1 stop

PDX13:35Portland

$1,564

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Tue 20/10

10:10-07:05

1 stop27h 55m

Brisbane

Tue 3/11

10:45-09:26

1 stop16h 41m

$1,463

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Tue 20/10

10:10-07:05

1 stop27h 55m

Brisbane

Tue 3/11

10:45-09:26

1 stop16h 41m

$1,465

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Mon 31/8

19:45-07:05

1 stop18h 20m

Brisbane

Wed 18/11

06:10-09:26

2 stops21h 16m

$1,501

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Sat 31/10

19:10-08:45

1 stop20h 35m

Brisbane

Sun 8/11

06:10-09:26

2 stops21h 16m

$1,503

Fastest return journey

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Sat 5/9

14:53-05:00

1 stop21h 07m

Brisbane

Fri 25/9

20:35-21:55

1 stop18h 20m

$1,513

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Wed 1/7

15:27-06:45

1 stop22h 18m

Melbourne

Wed 19/8

13:35-23:09

1 stop26h 34m

$1,527

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Wed 1/7

15:27-06:45

1 stop22h 18m

Melbourne

Wed 19/8

09:45-16:51

2 stops24h 06m

$1,534

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Thu 30/7

18:03-08:15

1 stop21h 12m

Melbourne

Wed 12/8

10:55-22:54

2 stops28h 59m

$1,535

PortlandSydney

PDX - SYD

PDXSYD

Portland

Thu 26/11

14:30-06:25

1 stop20h 55m

Sydney Kingsford Smith

Thu 10/12

08:55-17:28

2 stops27h 33m

$1,541

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Wed 1/7

13:14-08:15

1 stop26h 01m

Melbourne

Wed 19/8

10:55-12:00

1 stop18h 05m

$1,542

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, April 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 $250. If you don’t want to visit Australia in April, then you should wait until March to fly from Portland, when ticket prices are also cheap, with an average price of $526.

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 $1,709 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 $1,484 on momondo.

Can stopping save me money on Portland to Australia flights?

You could potentially save up to 28% 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 50m
Direct flights	None

The fastest flight from Portland to Australia takes 17h 50m

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 June 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 $725	Free cancellation	Rating 7.4 9,845 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.