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

ANA, Alaska Airlines, and American Airlines 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.

$796 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

10:00 - 14:51

BNE

PDX

21h 51m

1 stop

$1,466Air Canada

Sun, 2 Aug - Sun, 16 Aug

10:10 - 07:05

PDX

BNE

27h 55m

1 stop

10:45 - 09:26

BNE

PDX

16h 41m

1 stop

$1,489Air Canada

Tue, 20 Oct - Tue, 3 Nov

19:45 - 07:05

PDX

BNE

18h 20m

1 stop

10:15 - 14:51

BNE

PDX

21h 36m

1 stop

$1,490Air Canada

Sun, 2 Aug - Tue, 11 Aug

15:30 - 07:05

PDX

BNE

22h 35m

1 stop

06:10 - 09:26

BNE

PDX

21h 16m

2 stops

$1,528Multiple Airlines

Tue, 20 Oct - Tue, 3 Nov

19:10 - 13:25

PDX

BNE

24h 15m

2 stops

10:45 - 09:26

BNE

PDX

16h 41m

1 stop

$1,529Multiple Airlines

Mon, 2 Nov - Mon, 16 Nov

17:32 - 18:50

PDX

SYD

32h 18m

1 stop

20:45 - 20:50

SYD

PDX

17h 05m

1 stop

$1,573Alaska Airlines

Sun, 2 Aug - Tue, 11 Aug

07:46 - 18:50

PDX

SYD

18h 04m

1 stop

20:45 - 06:14

SYD

PDX

26h 29m

1 stop

$1,604Alaska Airlines

Fri, 14 Aug - Sun, 23 Aug

17:38 - 06:45

PDX

MEL

20h 07m

1 stop

09:45 - 16:36

MEL

PDX

23h 51m

1 stop

$1,623Qantas Airways

Fri, 21 Aug - Fri, 28 Aug

15:36 - 13:20

PDX

OOL

27h 44m

2 stops

14:50 - 00:35

OOL

PDX

51h 45m

2 stops

$2,163United Airlines

Sat, 14 Nov - Sat, 28 Nov

10:33 - 08:45

PDX

TSV

29h 12m

2 stops

15:15 - 20:48

TSV

PDX

47h 33m

3 stops

$2,502Qantas Airways

Tue, 25 Aug - Thu, 17 Dec

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American Airlines flights from Portland to Australia

Our best American Airlines deals on Portland to Australia flight tickets

American Airlines

6 Aug

PDX06:35Portland

31h 10m

1 stop

MEL06:45Melbourne

20 Aug

MEL09:45Melbourne

24h 06m

2 stops

PDX16:51Portland

$1,703

American Airlines

28 July

PDX15:29Portland

23h 01m

1 stop

SYD07:30Sydney Kingsford Smith

18 Aug

SYD17:50Sydney Kingsford Smith

23h 09m

1 stop

PDX23:59Portland

$1,707

American Airlines

28 July

PDX15:29Portland

23h 01m

1 stop

SYD07:30Sydney Kingsford Smith

11 Aug

SYD09:10Sydney Kingsford Smith

24h 41m

2 stops

PDX16:51Portland

$1,713

Alaska Airlines flights from Portland to Australia

Our best Alaska Airlines deals on Portland to Australia flight tickets

Alaska Airlines

29 July

PDX07:46Portland

18h 04m

1 stop

SYD18:50Sydney Kingsford Smith

4 Aug

SYD20:45Sydney Kingsford Smith

26h 26m

1 stop

PDX06:11Portland

$1,545

Alaska Airlines

2 Aug

PDX17:32Portland

32h 18m

1 stop

SYD18:50Sydney Kingsford Smith

11 Aug

SYD20:45Sydney Kingsford Smith

17h 05m

1 stop

PDX20:50Portland

$1,573

Alaska Airlines

14 Aug

PDX07:46Portland

18h 04m

1 stop

SYD18:50Sydney Kingsford Smith

23 Aug

SYD20:45Sydney Kingsford Smith

26h 29m

1 stop

PDX06:14Portland

$1,604

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Sun 2/8

19:45-07:05

1 stop18h 20m

Brisbane

Sun 16/8

10:00-14:51

1 stop21h 51m

$1,466

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

$1,489

Fastest return journey

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Sun 2/8

19:45-07:05

1 stop18h 20m

Brisbane

Tue 11/8

10:15-14:51

1 stop21h 36m

$1,490

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

$1,528

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Mon 2/11

19:10-13:25

2 stops24h 15m

Brisbane

Mon 16/11

10:45-09:26

1 stop16h 41m

$1,529

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sun 2/8

17:32-18:50

1 stop32h 18m

Sydney Kingsford Smith

Tue 11/8

20:45-20:50

1 stop17h 05m

$1,573

PortlandSydney

PDX - SYD

PDXSYD

Portland

Fri 14/8

07:46-18:50

1 stop18h 04m

Sydney Kingsford Smith

Sun 23/8

20:45-06:14

1 stop26h 29m

$1,604

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Fri 21/8

17:38-06:45

1 stop20h 07m

Melbourne

Fri 28/8

09:45-16:36

1 stop23h 51m

$1,623

PortlandCoolangatta

PDX - OOL

PDXOOL

Portland

Sat 14/11

15:36-13:20

2 stops27h 44m

Coolangatta Gold Coast

Sat 28/11

14:50-00:35

2 stops51h 45m

$2,163

PortlandTownsville

PDX - TSV

PDXTSV

Portland

Tue 25/8

10:33-08:45

2 stops29h 12m

Townsville

Thu 17/12

15:15-20:48

3 stops47h 33m

$2,502

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 $255. 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 $537.

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 $1,748 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 $1,514 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 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 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 $739	Free cancellation	Rating 7.4 9,948 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.