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

Alaska 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 July 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.

$786 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.

10:45 - 06:45

PDX

MEL

27h 00m

1 stop

09:45 - 13:25

MEL

PDX

20h 40m

1 stop

$1,456Multiple Airlines

Tue, 18 Aug - Mon, 24 Aug

19:45 - 07:05

PDX

BNE

18h 20m

1 stop

10:00 - 09:31

BNE

PDX

16h 31m

1 stop

$1,463Air Canada

Sun, 6 Sep - Sun, 13 Sep

19:10 - 08:45

PDX

BNE

19h 35m

1 stop

10:45 - 18:31

BNE

PDX

25h 46m

1 stop

$1,465Air Canada

Mon, 2 Nov - Mon, 16 Nov

17:00 - 05:50

PDX

BNE

18h 50m

1 stop

13:10 - 13:50

BNE

PDX

18h 40m

1 stop

$1,472Qantas Airways

Mon, 2 Nov - Mon, 16 Nov

15:33 - 05:00

PDX

BNE

20h 27m

1 stop

20:35 - 23:16

BNE

PDX

19h 41m

1 stop

$1,473Qantas Airways

Wed, 30 Sep - Mon, 5 Oct

06:00 - 05:00

PDX

MEL

28h 00m

1 stop

22:45 - 23:59

MEL

PDX

20h 14m

1 stop

$1,489American Airlines

Sun, 8 Nov - Sun, 29 Nov

07:46 - 18:50

PDX

SYD

18h 04m

1 stop

20:45 - 20:46

SYD

PDX

17h 01m

1 stop

$1,494Alaska Airlines

Mon, 17 Aug - Sun, 30 Aug

15:00 - 09:30

PDX

MEL

24h 30m

2 stops

12:00 - 23:41

MEL

PDX

30h 41m

1 stop

$1,496American Airlines

Wed, 28 Oct - Tue, 3 Nov

05:00 - 08:15

PDX

MEL

34h 15m

2 stops

10:55 - 21:05

MEL

PDX

27h 10m

2 stops

$1,528United Airlines

Tue, 18 Aug - Mon, 24 Aug

13:03 - 08:15

PDX

MEL

26h 12m

1 stop

18:00 - 14:47

MEL

PDX

37h 47m

2 stops

$1,542United Airlines

Sun, 23 Aug - Sat, 29 Aug

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

Air Canada flights from Portland to Australia

Our best Air Canada deals on Portland to Australia flight tickets

Air Canada

6 Sept

PDX19:45Portland

18h 20m

1 stop

BNE07:05Brisbane

13 Sept

BNE10:00Brisbane

16h 31m

1 stop

PDX09:31Portland

$1,463

Air Canada

2 Nov

PDX19:10Portland

19h 35m

1 stop

BNE08:45Brisbane

16 Nov

BNE10:45Brisbane

25h 46m

1 stop

PDX18:31Portland

$1,465

Air Canada

6 Sept

PDX19:45Portland

18h 20m

1 stop

BNE07:05Brisbane

13 Sept

BNE19:05Brisbane

31h 26m

2 stops

PDX09:31Portland

$1,476

Alaska Airlines flights from Portland to Australia

Our best Alaska Airlines deals on Portland to Australia flight tickets

Alaska Airlines

17 Aug

PDX07:46Portland

18h 04m

1 stop

SYD18:50Sydney Kingsford Smith

30 Aug

SYD20:45Sydney Kingsford Smith

17h 01m

1 stop

PDX20:46Portland

$1,494

Alaska Airlines

28 Oct

PDX08:00Portland

17h 45m

1 stop

SYD19:45Sydney Kingsford Smith

1 Nov

SYD21:40Sydney Kingsford Smith

18h 09m

1 stop

PDX20:49Portland

$1,532

Alaska Airlines

26 Oct

PDX08:00Portland

17h 45m

1 stop

SYD19:45Sydney Kingsford Smith

31 Oct

SYD21:40Sydney Kingsford Smith

26h 39m

1 stop

PDX06:19Portland

$1,566

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Tue 18/8

10:45-06:45

1 stop27h 00m

Melbourne

Mon 24/8

09:45-13:25

1 stop20h 40m

$1,456

Fastest return journey

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Sun 6/9

19:45-07:05

1 stop18h 20m

Brisbane

Sun 13/9

10:00-09:31

1 stop16h 31m

$1,463

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Mon 2/11

19:10-08:45

1 stop19h 35m

Brisbane

Mon 16/11

10:45-18:31

1 stop25h 46m

$1,465

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Mon 2/11

17:00-05:50

1 stop18h 50m

Brisbane

Mon 16/11

13:10-13:50

1 stop18h 40m

$1,472

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Wed 30/9

15:33-05:00

1 stop20h 27m

Brisbane

Mon 5/10

20:35-23:16

1 stop19h 41m

$1,473

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Sun 8/11

06:00-05:00

1 stop28h 00m

Melbourne

Sun 29/11

22:45-23:59

1 stop20h 14m

$1,489

PortlandSydney

PDX - SYD

PDXSYD

Portland

Mon 17/8

07:46-18:50

1 stop18h 04m

Sydney Kingsford Smith

Sun 30/8

20:45-20:46

1 stop17h 01m

$1,494

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Wed 28/10

15:00-09:30

2 stops24h 30m

Melbourne

Tue 3/11

12:00-23:41

1 stop30h 41m

$1,496

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Tue 18/8

05:00-08:15

2 stops34h 15m

Melbourne

Mon 24/8

10:55-21:05

2 stops27h 10m

$1,528

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Sun 23/8

13:03-08:15

1 stop26h 12m

Melbourne

Sat 29/8

18:00-14:47

2 stops37h 47m

$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, February 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 $1,525. If you don’t want to visit Australia in February, then you should wait until June to fly from Portland, when ticket prices are also cheap, with an average price of $1,532.

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 $1,743 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 $1,499 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

Fastest flight time	17h 41m
Direct flights	None

The fastest flight from Portland to Australia takes 17h 41m

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 July 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 10,024 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.