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

American Airlines, United 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.

$798 Cheap Flights from Portland to Australia in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Portland to Australia

Round-trip

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

$1,475Air Canada

Tue, 20 Oct - Tue, 3 Nov

15:15 - 08:45

PDX

BNE

24h 30m

1 stop

10:45 - 09:26

BNE

PDX

16h 41m

1 stop

$1,477Air Canada

Sat, 31 Oct - Sun, 8 Nov

13:53 - 05:00

PDX

BNE

22h 07m

1 stop

13:10 - 17:28

BNE

PDX

22h 18m

1 stop

$1,510Qantas Airways

Thu, 24 Sep - Sat, 12 Dec

19:10 - 14:05

PDX

AVV

23h 55m

2 stops

06:00 - 09:26

AVV

PDX

22h 26m

2 stops

$1,513Multiple Airlines

Sun, 8 Nov - Sun, 29 Nov

15:30 - 07:05

PDX

BNE

22h 35m

1 stop

06:10 - 09:26

BNE

PDX

21h 16m

2 stops

$1,514Multiple Airlines

Tue, 20 Oct - Tue, 3 Nov

07:00 - 06:45

PDX

MEL

30h 45m

1 stop

13:35 - 23:09

MEL

PDX

26h 34m

1 stop

$1,517American Airlines

Thu, 30 Jul - Wed, 12 Aug

15:27 - 06:45

PDX

MEL

22h 18m

1 stop

09:45 - 16:38

MEL

PDX

23h 53m

1 stop

$1,540American Airlines

Wed, 1 Jul - Thu, 30 Jul

10:45 - 11:05

PDX

TSV

30h 20m

2 stops

09:05 - 20:31

TSV

PDX

29h 26m

2 stops

$2,083Qantas Airways

Sun, 8 Nov - Thu, 12 Nov

05:15 - 10:40

PDX

OOL

36h 25m

3 stops

07:05 - 10:20

OOL

PDX

20h 15m

2 stops

$2,210United Airlines

Thu, 23 Jul - Thu, 30 Jul

11:16 - 12:30

PDX

PER

34h 14m

2 stops

23:45 - 12:08

PER

PDX

27h 23m

2 stops

$2,218United Airlines

Sun, 5 Jul - Sun, 12 Jul

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Alaska Airlines flights from Portland to Australia

Our best Alaska Airlines deals on Portland to Australia flight tickets

Alaska Airlines

22 June

PDX07:46Portland

18h 04m

1 stop

SYD18:50Sydney Kingsford Smith

21 July

SYD20:45Sydney Kingsford Smith

26h 26m

1 stop

PDX06:11Portland

$1,604

Alaska Airlines

22 June

PDX07:46Portland

18h 04m

1 stop

SYD18:50Sydney Kingsford Smith

21 July

SYD20:45Sydney Kingsford Smith

26h 26m

1 stop

PDX06:11Portland

$1,609

Alaska Airlines

23 June

PDX10:30Portland

39h 20m

1 stop

SYD18:50Sydney Kingsford Smith

2 Aug

SYD20:45Sydney Kingsford Smith

26h 26m

1 stop

PDX06:11Portland

$1,634

Delta flights from Portland to Australia

Our best Delta deals on Portland to Australia flight tickets

Delta

1 July

PDX13:25Portland

25h 25m

1 stop

MEL07:50Melbourne

31 July

MEL10:00Melbourne

26h 17m

1 stop

PDX19:17Portland

$1,565

Delta

1 July

PDX07:20Portland

31h 30m

2 stops

MEL07:50Melbourne

31 July

MEL10:00Melbourne

26h 17m

1 stop

PDX19:17Portland

$1,572

Delta

30 July

PDX19:20Portland

43h 30m

2 stops

MEL07:50Melbourne

12 Aug

MEL10:00Melbourne

23h 03m

2 stops

PDX16:03Portland

$1,592

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

$1,475

Fastest return journey

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Sat 31/10

15:15-08:45

1 stop24h 30m

Brisbane

Sun 8/11

10:45-09:26

1 stop16h 41m

$1,477

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Thu 24/9

13:53-05:00

1 stop22h 07m

Brisbane

Sat 12/12

13:10-17:28

1 stop22h 18m

$1,510

PortlandMelbourne

PDX - AVV

PDXAVV

Portland

Sun 8/11

19:10-14:05

2 stops23h 55m

Melbourne Avalon

Sun 29/11

06:00-09:26

2 stops22h 26m

$1,513

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Tue 20/10

15:30-07:05

1 stop22h 35m

Brisbane

Tue 3/11

06:10-09:26

2 stops21h 16m

$1,514

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Thu 30/7

07:00-06:45

1 stop30h 45m

Melbourne

Wed 12/8

13:35-23:09

1 stop26h 34m

$1,517

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Wed 1/7

15:27-06:45

1 stop22h 18m

Melbourne

Thu 30/7

09:45-16:38

1 stop23h 53m

$1,540

PortlandTownsville

PDX - TSV

PDXTSV

Portland

Sun 8/11

10:45-11:05

2 stops30h 20m

Townsville

Thu 12/11

09:05-20:31

2 stops29h 26m

$2,083

PortlandCoolangatta

PDX - OOL

PDXOOL

Portland

Thu 23/7

05:15-10:40

3 stops36h 25m

Coolangatta Gold Coast

Thu 30/7

07:05-10:20

2 stops20h 15m

$2,210

PortlandPerth

PDX - PER

PDXPER

Portland

Sun 5/7

11:16-12:30

2 stops34h 14m

Perth

Sun 12/7

23:45-12:08

2 stops27h 23m

$2,218

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, September 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 $198. If you don’t want to visit Australia in September, then you should wait until April to fly from Portland, when ticket prices are also cheap, with an average price of $252.

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 $1,720 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 $1,495 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 $731	Free cancellation	Rating 7.4 9,804 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.