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

American Airlines, Air New Zealand, and United 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 May 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.

$807 Cheap Flights from Portland to Australia in 2026

1 adult

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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.

15:30 - 07:05

PDX

BNE

22h 35m

1 stop

10:45 - 14:40

BNE

PDX

21h 55m

1 stop

$1,432Air Canada

Tue, 20 Oct - Tue, 3 Nov

10:10 - 07:05

PDX

BNE

27h 55m

1 stop

06:10 - 09:25

BNE

PDX

21h 15m

2 stops

$1,469Multiple Airlines

Tue, 20 Oct - Tue, 3 Nov

11:59 - 05:00

PDX

MEL

24h 01m

1 stop

09:45 - 16:38

MEL

PDX

23h 53m

2 stops

$1,498American Airlines

Wed, 17 Jun - Fri, 17 Jul

15:27 - 06:45

PDX

MEL

22h 18m

1 stop

09:45 - 16:38

MEL

PDX

23h 53m

2 stops

$1,499American Airlines

Wed, 17 Jun - Fri, 17 Jul

14:50 - 05:00

PDX

BNE

21h 10m

1 stop

20:35 - 21:55

BNE

PDX

18h 20m

1 stop

$1,506Qantas Airways

Sat, 29 Aug - Fri, 18 Sep

11:16 - 08:15

PDX

MEL

27h 59m

1 stop

10:55 - 18:32

MEL

PDX

24h 37m

1 stop

$1,509United Airlines

Sun, 9 Aug - Sat, 22 Aug

23:40 - 07:30

PDX

MEL

38h 50m

2 stops

10:55 - 09:34

MEL

PDX

39h 39m

2 stops

$1,515United Airlines

Sun, 26 Jul - Thu, 6 Aug

08:00 - 18:50

PDX

SYD

17h 50m

1 stop

20:45 - 06:20

SYD

PDX

26h 35m

1 stop

$1,546Alaska Airlines

Mon, 1 Jun - Sun, 7 Jun

07:46 - 18:50

PDX

SYD

18h 04m

1 stop

20:45 - 06:11

SYD

PDX

26h 26m

1 stop

$1,589Alaska Airlines

Mon, 22 Jun - Tue, 21 Jul

13:50 - 11:00

PDX

TSV

28h 10m

2 stops

07:05 - 13:25

TSV

PDX

47h 20m

2 stops

$2,108Qantas Airways

Thu, 10 Sep - Mon, 14 Sep

Alaska Airlines flights from Portland to Australia

Our best Alaska Airlines deals on Portland to Australia flight tickets

Alaska Airlines

1 June

PDX08:00Portland

17h 50m

1 stop

SYD18:50Sydney Kingsford Smith

7 June

SYD20:45Sydney Kingsford Smith

26h 35m

1 stop

PDX06:20Portland

$1,546

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

$1,589

Alaska Airlines

24 May

PDX17:34Portland

32h 16m

1 stop

SYD18:50Sydney Kingsford Smith

30 May

SYD20:45Sydney Kingsford Smith

26h 35m

1 stop

PDX06:20Portland

$1,602

Qantas Airways flights from Portland to Australia

Our best Qantas Airways deals on Portland to Australia flight tickets

Qantas Airways

29 Aug

PDX14:50Portland

21h 10m

1 stop

BNE05:00Brisbane

18 Sept

BNE20:35Brisbane

18h 20m

1 stop

PDX21:55Portland

$1,506

Qantas Airways

25 July

PDX07:20Portland

28h 40m

1 stop

BNE05:00Brisbane

7 Aug

BNE20:35Brisbane

20h 21m

1 stop

PDX23:56Portland

$1,613

Qantas Airways

4 Sept

PDX18:50Portland

18h 35m

1 stop

SYD06:25Sydney Kingsford Smith

13 Sept

SYD17:10Sydney Kingsford Smith

21h 45m

2 stops

PDX21:55Portland

$1,655

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Tue 20/10

15:30-07:05

1 stop22h 35m

Brisbane

Tue 3/11

10:45-14:40

1 stop21h 55m

$1,432

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Tue 20/10

10:10-07:05

1 stop27h 55m

Brisbane

Tue 3/11

06:10-09:25

2 stops21h 15m

$1,469

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Wed 17/6

11:59-05:00

1 stop24h 01m

Melbourne

Fri 17/7

09:45-16:38

2 stops23h 53m

$1,498

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Wed 17/6

15:27-06:45

1 stop22h 18m

Melbourne

Fri 17/7

09:45-16:38

2 stops23h 53m

$1,499

Fastest return journey

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Sat 29/8

14:50-05:00

1 stop21h 10m

Brisbane

Fri 18/9

20:35-21:55

1 stop18h 20m

$1,506

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Sun 9/8

11:16-08:15

1 stop27h 59m

Melbourne

Sat 22/8

10:55-18:32

1 stop24h 37m

$1,509

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Sun 26/7

23:40-07:30

2 stops38h 50m

Melbourne

Thu 6/8

10:55-09:34

2 stops39h 39m

$1,515

PortlandSydney

PDX - SYD

PDXSYD

Portland

Mon 1/6

08:00-18:50

1 stop17h 50m

Sydney Kingsford Smith

Sun 7/6

20:45-06:20

1 stop26h 35m

$1,546

PortlandSydney

PDX - SYD

PDXSYD

Portland

Mon 22/6

07:46-18:50

1 stop18h 04m

Sydney Kingsford Smith

Tue 21/7

20:45-06:11

1 stop26h 26m

$1,589

PortlandTownsville

PDX - TSV

PDXTSV

Portland

Thu 10/9

13:50-11:00

2 stops28h 10m

Townsville

Mon 14/9

07:05-13:25

2 stops47h 20m

$2,108

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 $192. 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 $244.

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 $1,669 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 $1,402 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 May 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 $707	Free cancellation	Rating 7.4 9,699 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.