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

United Airlines, Alaska Airlines, 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.

$721 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 - 07:05

PDX

BNE

18h 20m

1 stop

10:45 - 09:26

BNE

PDX

16h 41m

1 stop

$1,476Air Canada

Tue, 20 Oct - Tue, 3 Nov

19:45 - 07:05

PDX

BNE

18h 20m

1 stop

10:00 - 14:51

BNE

PDX

21h 51m

1 stop

$1,478Air Canada

Wed, 9 Sep - Wed, 16 Sep

19:10 - 08:45

PDX

BNE

20h 35m

1 stop

06:10 - 09:26

BNE

PDX

21h 16m

2 stops

$1,515Multiple Airlines

Sat, 31 Oct - Sun, 8 Nov

10:10 - 07:05

PDX

BNE

27h 55m

1 stop

06:10 - 09:26

BNE

PDX

21h 16m

2 stops

$1,516Multiple Airlines

Tue, 20 Oct - Tue, 3 Nov

06:35 - 06:45

PDX

MEL

31h 10m

1 stop

09:45 - 16:51

MEL

PDX

24h 06m

2 stops

$1,528American Airlines

Thu, 13 Aug - Sun, 30 Aug

06:35 - 06:45

PDX

MEL

31h 10m

1 stop

09:45 - 18:59

MEL

PDX

26h 14m

2 stops

$1,529American Airlines

Thu, 6 Aug - Wed, 19 Aug

08:00 - 18:50

PDX

SYD

17h 50m

1 stop

20:45 - 20:46

SYD

PDX

17h 01m

1 stop

$1,543Alaska Airlines

Mon, 31 Aug - Sun, 13 Sep

08:00 - 18:50

PDX

SYD

17h 50m

1 stop

20:45 - 20:46

SYD

PDX

17h 01m

1 stop

$1,563Alaska Airlines

Mon, 31 Aug - Sun, 13 Sep

18:03 - 10:40

PDX

OOL

23h 37m

2 stops

06:00 - 12:00

OOL

PDX

23h 00m

2 stops

$1,900United Airlines

Wed, 5 Aug - Wed, 12 Aug

05:15 - 10:40

PDX

OOL

36h 25m

3 stops

06:00 - 14:47

OOL

PDX

25h 47m

2 stops

$1,919United Airlines

Wed, 5 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

29 June

PDX07:46Portland

18h 04m

1 stop

SYD18:50Sydney Kingsford Smith

12 July

SYD20:45Sydney Kingsford Smith

17h 05m

1 stop

PDX20:50Portland

$1,503

Alaska Airlines

31 Aug

PDX08:00Portland

17h 50m

1 stop

SYD18:50Sydney Kingsford Smith

13 Sept

SYD20:45Sydney Kingsford Smith

17h 01m

1 stop

PDX20:46Portland

$1,543

Alaska Airlines

31 Aug

PDX08:00Portland

17h 50m

1 stop

SYD18:50Sydney Kingsford Smith

13 Sept

SYD20:45Sydney Kingsford Smith

17h 01m

1 stop

PDX20:46Portland

$1,563

Qantas Airways flights from Portland to Australia

Our best Qantas Airways deals on Portland to Australia flight tickets

Qantas Airways

6 Aug

PDX07:00Portland

30h 45m

1 stop

MEL06:45Melbourne

19 Aug

MEL09:45Melbourne

31h 14m

1 stop

PDX23:59Portland

$1,538

Qantas Airways

11 Aug

PDX06:35Portland

31h 10m

1 stop

MEL06:45Melbourne

31 Aug

MEL09:45Melbourne

31h 14m

1 stop

PDX23:59Portland

$1,573

Qantas Airways

11 Aug

PDX17:36Portland

23h 59m

2 stops

MEL10:35Melbourne

31 Aug

MEL09:45Melbourne

31h 14m

1 stop

PDX23:59Portland

$1,626

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Tue 20/10

19:45-07:05

1 stop18h 20m

Brisbane

Tue 3/11

10:45-09:26

1 stop16h 41m

$1,476

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Wed 9/9

19:45-07:05

1 stop18h 20m

Brisbane

Wed 16/9

10:00-14:51

1 stop21h 51m

$1,478

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

$1,515

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Tue 20/10

10:10-07:05

1 stop27h 55m

Brisbane

Tue 3/11

06:10-09:26

2 stops21h 16m

$1,516

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Thu 13/8

06:35-06:45

1 stop31h 10m

Melbourne

Sun 30/8

09:45-16:51

2 stops24h 06m

$1,528

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Thu 6/8

06:35-06:45

1 stop31h 10m

Melbourne

Wed 19/8

09:45-18:59

2 stops26h 14m

$1,529

Fastest return journey

PortlandSydney

PDX - SYD

PDXSYD

Portland

Mon 31/8

08:00-18:50

1 stop17h 50m

Sydney Kingsford Smith

Sun 13/9

20:45-20:46

1 stop17h 01m

$1,543

PortlandSydney

PDX - SYD

PDXSYD

Portland

Mon 31/8

08:00-18:50

1 stop17h 50m

Sydney Kingsford Smith

Sun 13/9

20:45-20:46

1 stop17h 01m

$1,563

PortlandCoolangatta

PDX - OOL

PDXOOL

Portland

Wed 5/8

18:03-10:40

2 stops23h 37m

Coolangatta Gold Coast

Wed 12/8

06:00-12:00

2 stops23h 00m

$1,900

PortlandCoolangatta

PDX - OOL

PDXOOL

Portland

Wed 5/8

05:15-10:40

3 stops36h 25m

Coolangatta Gold Coast

Wed 12/8

06:00-14:47

2 stops25h 47m

$1,919

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 $253. 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 $531.

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 $1,721 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 $1,498 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 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 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 $732	Free cancellation	Rating 7.4 9,875 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.