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

United Airlines, Air Canada, and Qantas Airways are the most popular carriers operating from Portland to Australia

Which airlines fly to Australia?

United Airlines, Qantas Airways and Air Canada are the top three most popular airlines that fly to Australia from Portland according to our data. United Airlines is the first choice among our users, with 69% of people opting to fly with this airline when travelling to Australia. Keep in mind that there are 3 different airlines that fly to Australia on a routine basis, so you have a few additional options to choose from.

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 September 2026, there are 3 operators 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.

$818 Cheap Flights from Portland to Australia in 2026/27

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.

19:15 - 13:35PDX Portland-MEL Melbourne

24h 20m2 stops Vancouver Intl Sydney Kingsford Smith

07:10 - 09:26MEL Melbourne-PDX Portland

21h 16m2 stops Brisbane Vancouver Intl

$1,248Air Canada

Tue, 27 Oct - Tue, 3 Nov

17:03 - 09:30PDX Portland-MEL Melbourne

22h 27m1 stop Los Angeles

22:45 - 00:01MEL Melbourne-PDX Portland

20h 16m1 stop Los Angeles

$1,278Qantas Airways

Tue, 27 Oct - Tue, 3 Nov

10:05 - 08:45PDX Portland-BNE Brisbane

29h 40m1 stop Vancouver Intl

10:45 - 18:31BNE Brisbane-PDX Portland

25h 46m1 stop Vancouver Intl

$1,292Air Canada

Sat, 31 Oct - Sun, 8 Nov

19:15 - 08:45PDX Portland-BNE Brisbane

19h 30m1 stop Vancouver Intl

10:45 - 18:31BNE Brisbane-PDX Portland

25h 46m1 stop Vancouver Intl

$1,292Air Canada

Mon, 2 Nov - Mon, 16 Nov

19:10 - 08:45PDX Portland-BNE Brisbane

19h 35m1 stop Vancouver Intl

06:05 - 09:26BNE Brisbane-PDX Portland

21h 21m2 stops Sydney Kingsford Smith Vancouver Intl

$1,320Multiple Airlines

Mon, 8 Feb - Mon, 22 Feb

19:10 - 13:25PDX Portland-BNE Brisbane

24h 15m2 stops Vancouver Intl Sydney Kingsford Smith

10:45 - 09:26BNE Brisbane-PDX Portland

16h 41m1 stop Vancouver Intl

$1,320Multiple Airlines

Mon, 8 Feb - Mon, 22 Feb

13:39 - 07:30PDX Portland-BNE Brisbane

23h 51m1 stop San Francisco

11:20 - 18:31BNE Brisbane-PDX Portland

25h 11m1 stop San Francisco

$1,559United Airlines

Sat, 6 Feb - Sat, 20 Feb

15:30 - 07:30PDX Portland-BNE Brisbane

22h 00m1 stop San Francisco

11:20 - 18:31BNE Brisbane-PDX Portland

25h 11m1 stop San Francisco

$1,559United Airlines

Sat, 6 Feb - Sun, 21 Feb

17:40 - 13:15PDX Portland-SYD Sydney Kingsford Smith

24h 35m2 stops Los Angeles Brisbane

21:25 - 20:48SYD Sydney Kingsford Smith-PDX Portland

18h 23m1 stop San Francisco

$1,652Qantas Airways

Thu, 18 Feb - Wed, 3 Mar

14:34 - 13:15PDX Portland-SYD Sydney Kingsford Smith

27h 41m2 stops Los Angeles Brisbane

11:20 - 17:11SYD Sydney Kingsford Smith-PDX Portland

24h 51m1 stop Los Angeles

$1,939Qantas Airways

Thu, 4 Feb - Mon, 15 Feb

Cheap last-minute flights

Enter your travel dates to find the best prices.

19:45 - 07:05PDX Portland-BNE Brisbane

18h 20m1 stop Vancouver Intl

10:00 - 19:11BNE Brisbane-PDX Portland

26h 11m1 stop Vancouver Intl

$1,572Air Canada

Mon, 21 Sep - Wed, 21 Oct

19:15 - 06:30PDX Portland-BNE Brisbane

18h 15m1 stop San Francisco

10:30 - 12:05BNE Brisbane-PDX Portland

18h 35m1 stop San Francisco

$1,582United Airlines

Mon, 21 Sep - Tue, 20 Oct

12:45 - 06:30PDX Portland-BNE Brisbane

24h 45m2 stops Denver Intl San Francisco

10:30 - 15:06BNE Brisbane-PDX Portland

21h 36m2 stops San Francisco Denver Intl

$1,587United Airlines

Mon, 21 Sep - Tue, 20 Oct

12:45 - 06:30PDX Portland-BNE Brisbane

24h 45m2 stops Denver Intl San Francisco

10:30 - 15:03BNE Brisbane-PDX Portland

21h 33m2 stops San Francisco Denver Intl

$1,587United Airlines

Mon, 21 Sep - Wed, 21 Oct

10:10 - 07:20PDX Portland-SYD Sydney Kingsford Smith

28h 10m1 stop Vancouver Intl

09:20 - 19:11SYD Sydney Kingsford Smith-PDX Portland

26h 51m1 stop Vancouver Intl

$1,765Air Canada

Wed, 16 Sep - Wed, 30 Sep

19:45 - 07:20PDX Portland-SYD Sydney Kingsford Smith

18h 35m1 stop Vancouver Intl

09:20 - 09:31SYD Sydney Kingsford Smith-PDX Portland

17h 11m1 stop Vancouver Intl

$1,765Air Canada

Wed, 16 Sep - Tue, 29 Sep

08:00 - 18:50PDX Portland-SYD Sydney Kingsford Smith

17h 50m1 stop Honolulu

20:45 - 20:50SYD Sydney Kingsford Smith-PDX Portland

17h 05m1 stop Honolulu

$1,835Alaska Airlines

Fri, 18 Sep - Sun, 20 Sep

10:10 - 07:20PDX Portland-SYD Sydney Kingsford Smith

28h 10m1 stop Vancouver Intl

06:00 - 09:31SYD Sydney Kingsford Smith-PDX Portland

20h 31m2 stops Brisbane Vancouver Intl

$1,855Multiple Airlines

Wed, 16 Sep - Wed, 30 Sep

06:30 - 07:05PDX Portland-SYD Sydney Kingsford Smith

31h 35m1 stop Los Angeles

13:40 - 22:06SYD Sydney Kingsford Smith-PDX Portland

25h 26m2 stops Brisbane Los Angeles

$2,072Qantas Airways

Wed, 16 Sep - Tue, 29 Sep

13:53 - 09:15PDX Portland-SYD Sydney Kingsford Smith

26h 22m2 stops Los Angeles Brisbane

15:45 - 22:06SYD Sydney Kingsford Smith-PDX Portland

23h 21m2 stops Brisbane Los Angeles

$2,110Qantas Airways

Wed, 16 Sep - Wed, 30 Sep

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 New Zealand flights from Portland to Australia

Our best Air New Zealand deals on Portland to Australia flight tickets

Air New Zealand

16 Nov

PDX15:15Portland

23h 20m

1 stop

SYD09:35Sydney Kingsford Smith

25 Nov

SYD11:20Sydney Kingsford Smith

17h 06m

1 stop

PDX09:26Portland

$1,625

Air New Zealand

31 Jan

PDX15:15Portland

23h 20m

1 stop

SYD09:35Sydney Kingsford Smith

16 Feb

SYD11:20Sydney Kingsford Smith

22h 21m

1 stop

PDX14:41Portland

$1,647

Air New Zealand

9 Feb

PDX15:15Portland

24h 45m

2 stops

BNE10:00Brisbane

24 Feb

BNE11:15Brisbane

27h 31m

2 stops

PDX20:46Portland

$1,736

Qantas Airways flights from Portland to Australia

Our best Qantas Airways deals on Portland to Australia flight tickets

Qantas Airways

27 Oct

PDX17:03Portland

22h 27m

1 stop

MEL09:30Melbourne

3 Nov

MEL22:45Melbourne

20h 16m

1 stop

PDX00:01Portland

$1,278

Qantas Airways

18 Feb

PDX17:40Portland

24h 35m

2 stops

SYD13:15Sydney Kingsford Smith

3 Mar

SYD21:25Sydney Kingsford Smith

18h 23m

1 stop

PDX20:48Portland

$1,652

Qantas Airways

19 Feb

PDX17:40Portland

20h 50m

1 stop

MEL09:30Melbourne

5 Mar

MEL22:45Melbourne

20h 09m

1 stop

PDX23:54Portland

$1,692

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PortlandMelbourne

PDX Portland - MEL Melbourne

PDXMEL

Portland

Tue 27/10

19:15-13:35

2 stops24h 20m

Melbourne

Tue 3/11

07:10-09:26

2 stops21h 16m

$1,248

PortlandMelbourne

PDX Portland - MEL Melbourne

PDXMEL

Portland

Tue 27/10

17:03-09:30

1 stop22h 27m

Melbourne

Tue 3/11

22:45-00:01

1 stop20h 16m

$1,278

PortlandBrisbane

PDX Portland - BNE Brisbane

PDXBNE

Portland

Sat 31/10

10:05-08:45

1 stop29h 40m

Brisbane

Sun 8/11

10:45-18:31

1 stop25h 46m

$1,292

PortlandBrisbane

PDX Portland - BNE Brisbane

PDXBNE

Portland

Mon 2/11

19:15-08:45

1 stop19h 30m

Brisbane

Mon 16/11

10:45-18:31

1 stop25h 46m

$1,292

Fastest return journey

PortlandBrisbane

PDX Portland - BNE Brisbane

PDXBNE

Portland

Mon 8/2

19:10-08:45

1 stop19h 35m

Brisbane

Mon 22/2

06:05-09:26

2 stops21h 21m

$1,320

PortlandBrisbane

PDX Portland - BNE Brisbane

PDXBNE

Portland

Mon 8/2

19:10-13:25

2 stops24h 15m

Brisbane

Mon 22/2

10:45-09:26

1 stop16h 41m

$1,320

PortlandBrisbane

PDX Portland - BNE Brisbane

PDXBNE

Portland

Sat 6/2

13:39-07:30

1 stop23h 51m

Brisbane

Sat 20/2

11:20-18:31

1 stop25h 11m

$1,559

PortlandBrisbane

PDX Portland - BNE Brisbane

PDXBNE

Portland

Sat 6/2

15:30-07:30

1 stop22h 00m

Brisbane

Sun 21/2

11:20-18:31

1 stop25h 11m

$1,559

PortlandSydney

PDX Portland - SYD Sydney Kingsford Smith

PDXSYD

Portland

Thu 18/2

17:40-13:15

2 stops24h 35m

Sydney Kingsford Smith

Wed 3/3

21:25-20:48

1 stop18h 23m

$1,652

PortlandSydney

PDX Portland - SYD Sydney Kingsford Smith

PDXSYD

Portland

Thu 4/2

14:34-13:15

2 stops27h 41m

Sydney Kingsford Smith

Mon 15/2

11:20-17:11

1 stop24h 51m

$1,939

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, June 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 $1,502. If you don’t want to visit Australia in June, then you should wait until April to fly from Portland, when ticket prices are also cheap, with an average price of $1,562.

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 $1,440 on momondo.

Can stopping save me money on Portland to Australia flights?

You could potentially save up to 38% 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

Best price found	$818
Fastest flight time	22h 11m
Direct flights	None

The best one-way flight to Australia from Portland in the past 72 hours is $818. The best return flight deal from Portland to Australia found on momondo in the last 72 hours is $1,248.

The fastest flight from Portland to Australia takes 22h 11m

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 September 2026, there are 3 operators 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 $718	Free cancellation	Rating 7.4 10,211 reviews	Search United Airlines flights
Air Canada	PriceFrom $1,243	Free cancellation	Rating 7.1 11,630 reviews	Search Air Canada flights
Qantas Airways	PriceFrom $1,245	Free cancellation	Rating 7.5 1,094 reviews	Search Qantas Airways 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.