How long is the flight from Australia to Portland?

United Airlines, Air Canada, and American Airlines can get you from Australia to Portland in just under 21h 54m. Your travel time can differ by up to 5h 12m. The distance between Australia and Portland is about 12350 km. This flight may include one or multiple stops. Find deals

What are the cheapest airlines to fly from Australia to Portland one-way?

The cheapet airlines for a one-way flight from Australia to Portland are Air Canada ($713), American Airlines ($861), and United Airlines ($867). Find deals

In terms of precipitation, rainfall in Portland ranges from 18.0 - 142.0 inches per month. November is typically the wettest month, when rainfall can reach 142.0 mm. July is typically the driest time to visit Portland when rainfall is around 18.0 mm. Find deals

If weather is an important factor for your trip to Portland, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

What are the most popular routes from Australia to Portland?

The most popular flight routes from Australia to Portland are Melbourne - Portland, Sydney Kingsford Smith - Portland and Perth - Portland.

What are the most popular airlines that fly from Australia to Portland?

When booking a flight from Australia to Portland, you may want to consider flying on Air Canada, Alaska Airlines or Delta as they are the most popular for this route.

How far in advance should I book a flight from Australia to Portland?

To save on the cost of your flight from Australia to Portland, book at least 39 days before your planned departure. Booking around this time can save you about 101% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $1,488 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $2,315.

What is the cheapest month to fly from Australia to Portland?

August is one of the best times of the year to fly to Portland from Australia. Prices for August average $1,778 per person but you can even find prices for as low as $1,264. The most expensive prices can be found in the month of December. Opting for a August flight can save you 32% on your journey compared to booking in December

What airport do you fly into for flights to Portland from Australia?

Portland (PDX), located 9.7 km from the city centre, is the airport you fly into when you book flights from Australia to Portland.

Can I find deals for flights from Australia to Portland that include hotel bookings?

Yes. In addition to deals on Australia to Portland flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Australia to Portland?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Australia to Portland.

Can I find deals for business class flights from Australia to Portland?

Yes. Cheapflights offers flight deals from Australia to Portland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$667+ Flights from Australia to Portland

Cheap flight deals from Australia to Portland

Round-trip from	$1,271
One-way from	$667
Popular in	December
Cheapest in	August
Average price	$1,430

United Airlines
19/9-26/9
3 total stops
54h 17m total
Australia to Portland

Search Deals

15/10
2 total stops
30h 48m total
Australia to Portland

Search Deals

Highest demand for flights based on searches. 14% potential increase in price ($467 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($82 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 2025

Search Deals

Find flight deals from Australia to Portland

Cheapest flights from Australia to Portland
Explore the most affordable flight options available from Australia to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 August 2025.

Thu 28/821:40SYD - PDX

1 stop18h 00mAlaska Airlines

Thu 11/907:40PDX - SYD

1 stop19h 05mAlaska Airlines

Deal found 18/8$1,177

Sat 23/821:40SYD - PDX

2 stops25h 21mAlaska Airlines

Sun 24/817:55PDX - SYD

1 stop32h 50mAlaska Airlines

Deal found 18/8$1,199

Sun 17/821:40SYD - PDX

1 stop25h 15mHawaiian Airlines

Fri 22/810:40PDX - SYD

1 stop40h 05mHawaiian Airlines

Deal found 17/8$1,248

Fri 19/910:55MEL - PDX

1 stop20h 47mUnited Airlines

Fri 26/905:00PDX - MEL

2 stops33h 30mUnited Airlines

Deal found 18/8$1,271

Thu 6/1110:45BNE - PDX

1 stop22h 00mAir Canada

Thu 20/1115:15PDX - BNE

1 stop23h 30mAir Canada

Deal found 19/8$1,271

Tue 7/1010:10SYD - PDX

1 stop21h 54mAmerican Airlines

Tue 21/1014:45PDX - SYD

1 stop23h 20mAmerican Airlines

Deal found 19/8$1,271

Wed 3/910:55MEL - PDX

2 stops23h 26mUnited Airlines

Mon 29/923:59PDX - MEL

2 stops39h 16mUnited Airlines

Deal found 18/8$1,273

Thu 28/809:25SYD - PDX

2 stops31h 27mDelta

Thu 11/917:10PDX - SYD

2 stops20h 25mDelta

Deal found 18/8$1,282

Mon 6/1011:20SYD - PDX

1 stop19h 22mUnited Airlines

Tue 14/1017:15PDX - SYD

1 stop20h 40mUnited Airlines

Deal found 19/8$1,296

Thu 6/1119:50BNE - PDX

2 stops40h 40mMultiple Airlines

Thu 20/1119:00PDX - BNE

1 stop19h 45mMultiple Airlines

Deal found 19/8$1,305

Mon 1/1211:20SYD - PDX

2 stops30h 36mUnited Airlines

Wed 31/1215:54PDX - SYD

1 stop19h 26mUnited Airlines

Deal found 18/8$1,305

Thu 6/1111:40BNE - PDX

2 stops29h 05mUnited Airlines

Thu 20/1112:55PDX - BNE

2 stops24h 35mUnited Airlines

Deal found 19/8$1,360

Best flights from Australia to Portland
Discover carefully curated flight deals from Australia to Portland that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 19 August 2025.

Fri 19/910:55MEL - PDX

2 stops27h 06mUnited Airlines

Fri 26/905:00PDX - MEL

2 stops33h 30mUnited Airlines

Deal found 18/8$1,271

Thu 6/1110:45BNE - PDX

1 stop22h 00mAir Canada

Thu 20/1115:15PDX - BNE

1 stop23h 30mAir Canada

Deal found 19/8$1,271

Tue 7/1010:10SYD - PDX

1 stop21h 54mAmerican Airlines

Tue 21/1014:45PDX - SYD

1 stop23h 20mAmerican Airlines

Deal found 19/8$1,271

Thu 6/1119:50BNE - PDX

2 stops40h 40mMultiple Airlines

Thu 20/1119:00PDX - BNE

1 stop19h 45mMultiple Airlines

Deal found 19/8$1,305

Mon 1/1210:40SYD - PDX

1 stop27h 48mDelta

Wed 31/1206:00PDX - SYD

1 stop31h 30mDelta

Deal found 17/8$1,543

Thu 2/1010:55MEL - PDX

1 stop18h 47mVirgin Australia

Thu 9/1010:05PDX - MEL

1 stop29h 10mVirgin Australia

Deal found 18/8$1,620

Wed 12/1101:10PER - PDX

2 stops25h 22mSingapore Airlines

Mon 17/1107:20PDX - PER

2 stops48h 35mSingapore Airlines

Deal found 18/8$2,542

Wed 3/910:55MEL - PDX

2 stops23h 26mUnited Airlines

Mon 29/923:59PDX - MEL

2 stops39h 16mUnited Airlines

Deal found 18/8$1,273

Tue 16/1211:30MEL - PDX

2 stops41h 08mUnited Airlines

Tue 6/112:51PDX - MEL

2 stops49h 39mUnited Airlines

Deal found 16/8$1,273

Fri 13/210:45BNE - PDX

1 stop16h 30mAir Canada

Tue 17/219:00PDX - BNE

1 stop19h 45mAir Canada

Deal found 18/8$1,416

Thu 2/1019:40ADL - PDX

2 stops43h 30mMultiple Airlines

Thu 9/1007:50PDX - ADL

2 stops30h 40mMultiple Airlines

Deal found 18/8$1,523

Mon 6/1011:20SYD - PDX

1 stop19h 22mUnited Airlines

Tue 14/1017:15PDX - SYD

1 stop20h 40mUnited Airlines

Deal found 19/8$1,296

Last-minute flights from Australia to Portland
Discover last-minute flight deals from Australia to Portland. Data last updated 19 August 2025 and is based on user searches.

Thu 21/809:10SYD - PDX

1 stop29h 04mAmerican Airlines

Fri 22/814:56PDX - SYD

1 stop23h 09mAmerican Airlines

Deal found 16/8$1,431

Thu 21/810:55MEL - PDX

1 stop26h 42mUnited Airlines

Thu 21/823:59PDX - MEL

2 stops39h 16mUnited Airlines

Deal found 19/8$1,888

Thu 21/810:55MEL - PDX

1 stop38h 56mUnited Airlines

Fri 22/819:35PDX - MEL

1 stop19h 40mUnited Airlines

Deal found 19/8$1,897

Fri 22/809:10SYD - PDX

1 stop20h 39mAmerican Airlines

Sat 23/807:40PDX - SYD

1 stop30h 25mAmerican Airlines

Deal found 17/8$1,417

Fri 22/810:20SYD - PDX

1 stop19h 23mUnited Airlines

Sat 23/805:00PDX - SYD

2 stops33h 00mUnited Airlines

Deal found 17/8$1,442

Sat 23/821:40SYD - PDX

2 stops25h 21mAlaska Airlines

Sun 24/817:55PDX - SYD

1 stop32h 50mAlaska Airlines

Deal found 18/8$1,199

Thu 28/821:40SYD - PDX

1 stop18h 00mAlaska Airlines

Thu 11/907:40PDX - SYD

1 stop19h 05mAlaska Airlines

Deal found 18/8$1,177

Thu 28/809:25SYD - PDX

2 stops31h 27mDelta

Thu 11/917:10PDX - SYD

2 stops20h 25mDelta

Deal found 18/8$1,282

Wed 3/910:55MEL - PDX

2 stops23h 26mUnited Airlines

Mon 29/923:59PDX - MEL

2 stops39h 16mUnited Airlines

Deal found 18/8$1,273

Wed 17/909:30MEL - PDX

2 stops28h 31mUnited Airlines

Wed 8/1015:50PDX - MEL

1 stop23h 25mUnited Airlines

Deal found 19/8$1,875

Fri 19/910:55MEL - PDX

2 stops27h 06mUnited Airlines

Fri 26/905:00PDX - MEL

2 stops33h 30mUnited Airlines

Deal found 18/8$1,271

Fri 19/906:00MEL - PDX

2 stops29h 46mMultiple Airlines

Fri 26/919:40PDX - MEL

2 stops21h 55mMultiple Airlines

Deal found 16/8$1,894

One-way flights from Australia to Portland
Search for one-way flight options from Australia to Portland. Find affordable one-way fares based on user searches. Data last updated 19 August 2025.

Wed 15/1017:20SYD - PDX

2 stops30h 48mMultiple Airlines

Deal found 17/8$667

Sun 19/1017:20SYD - PDX

2 stops36h 10mMultiple Airlines

Deal found 19/8$709

Thu 25/909:20SYD - PDX

1 stop30h 41mAir Canada

Deal found 19/8$713

Wed 17/909:20SYD - PDX

1 stop30h 41mAir Canada

Deal found 19/8$742

Sun 21/909:10SYD - PDX

1 stop46h 13mAmerican Airlines

Deal found 19/8$753

Wed 1/1009:10SYD - PDX

2 stops29h 17mAmerican Airlines

Deal found 17/8$755

Sat 18/1010:20SYD - PDX

1 stop17h 00mAir Canada

Deal found 19/8$758

Mon 8/909:20SYD - PDX

1 stop30h 41mAir Canada

Deal found 19/8$759

Thu 25/909:10SYD - PDX

2 stops31h 01mAmerican Airlines

Deal found 17/8$762

Wed 17/909:30SYD - PDX

3 stops30h 07mUnited Airlines

Deal found 18/8$767

Fri 30/110:45BNE - PDX

1 stop25h 45mAir Canada

Deal found 19/8$830

Fri 30/106:10BNE - PDX

2 stops21h 05mMultiple Airlines

Deal found 19/8$856

Fly from

Fly to

Route

Depart

Return

Price

MelbournePortland

MEL - PDX

MELPDX

Melbourne

Fri 19/9

10:55-21:01

2 stops27h 06m

Portland

Fri 26/9

05:00-07:30

2 stops33h 30m

$1,271

BrisbanePortland

BNE - PDX

BNEPDX

Brisbane

Thu 6/11

10:45-14:45

1 stop22h 00m

Portland

Thu 20/11

15:15-08:45

1 stop23h 30m

$1,271

SydneyPortland

SYD - PDX

SYDPDX

Sydney Kingsford Smith

Tue 7/10

10:10-14:04

1 stop21h 54m

Portland

Tue 21/10

14:45-08:05

1 stop23h 20m

$1,271

MelbournePortland

MEL - PDX

MELPDX

Melbourne

Wed 3/9

10:55-17:21

2 stops23h 26m

Portland

Mon 29/9

23:59-08:15

2 stops39h 16m

$1,273

MelbournePortland

MEL - PDX

MELPDX

Melbourne

Tue 16/12

11:30-09:38

2 stops41h 08m

Portland

Tue 6/1

12:51-09:30

2 stops49h 39m

$1,273

SydneyPortland

SYD - PDX

SYDPDX

Sydney Kingsford Smith

Mon 6/10

11:20-12:42

1 stop19h 22m

Portland

Tue 14/10

17:15-07:55

1 stop20h 40m

$1,296

SydneyPortland

SYD - PDX

SYDPDX

Sydney Kingsford Smith

Tue 7/10

11:20-12:42

1 stop19h 22m

Portland

Tue 21/10

05:30-08:00

2 stops32h 30m

$1,296

BrisbanePortland

BNE - PDX

BNEPDX

Brisbane

Thu 6/11

19:50-18:30

2 stops40h 40m

Portland

Thu 20/11

19:00-08:45

1 stop19h 45m

$1,305

SydneyPortland

SYD - PDX

SYDPDX

Sydney Kingsford Smith

Mon 1/12

11:20-22:56

2 stops30h 36m

Portland

Wed 31/12

05:00-09:05

2 stops33h 05m

$1,305

BrisbanePortland

BNE - PDX

BNEPDX

Brisbane

Thu 6/11

11:40-22:45

2 stops29h 05m

Portland

Thu 20/11

12:55-07:30

2 stops24h 35m

$1,360

Flights are sorted by cheapest return flights first.

Deals found on 17/8

Showing 1-10 of 50 results

...

Best time to book a flight from Australia to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from Australia with our price prediction graph.

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Australia to Portland

What is the cheapest month to book a flight from Australia to Portland?

Currently, January is the cheapest month in which you can book a flight from Australia to Portland (average of $908). Flying from Australia to Portland in December is currently the most expensive (average of $1,407). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from AU to PDX?

When flying from Australia to Portland, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Portland

Check out reviews from past customers who have flown with Hawaiian Airlines, Qantas Airways, andVirgin Australia from Australia to Portland to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Hawaiian Airlines

7.8

Good

2,665 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Lynn,Aug 2025

OGG - HNL

It was a good flight wish they would offer more than baby drinks

Hawaiian Airlines

7.8

Good

2,665 reviews

Hawaiian Airlines

7.8

Good

2,665 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Lynn,Aug 2025

OGG - HNL

It was a good flight wish they would offer more than baby drinks

Qantas Airways

7.5

Good

896 reviews

Hawaiian Airlines

7.8

Good

2,665 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Lynn,Aug 2025

OGG - HNL

It was a good flight wish they would offer more than baby drinks

Virgin Australia

7.5

Good

413 reviews

Hawaiian Airlines

7.8

Good

2,665 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Lynn,Aug 2025

OGG - HNL

It was a good flight wish they would offer more than baby drinks

United Airlines

7.4

Good

8,922 reviews

Hawaiian Airlines

7.8

Good

2,665 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Lynn,Aug 2025

OGG - HNL

It was a good flight wish they would offer more than baby drinks

Air Canada

7.1

Good

9,997 reviews

Hawaiian Airlines

7.8

Good

2,665 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Lynn,Aug 2025

OGG - HNL

It was a good flight wish they would offer more than baby drinks

Related info for your journey

What airport do you fly into for flights to Portland from Australia?
Portland (PDX), located 9.7 km from the city centre, is the airport you fly into when you book flights from Australia to Portland.
How long is the flight from Australia to Portland?
United Airlines, Air Canada, and American Airlines can get you from Australia to Portland in just under 21h 54m. Your travel time can differ by up to 5h 12m. The distance between Australia and Portland is about 12350 km. This flight may include one or multiple stops.
What are the cheapest airlines to fly from Australia to Portland one-way?
The cheapet airlines for a one-way flight from Australia to Portland are Air Canada ($713), American Airlines ($861), and United Airlines ($867).
What are the most popular routes from Australia to Portland?
The most popular flight routes from Australia to Portland are Melbourne - Portland, Sydney Kingsford Smith - Portland and Perth - Portland.
Can I find deals for flights from Australia to Portland that include hotel bookings?
Yes. In addition to deals on Australia to Portland flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Australia to Portland?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Australia to Portland.
Can I find deals for business class flights from Australia to Portland?
Yes. Cheapflights offers flight deals from Australia to Portland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Australia to Portland?
Currently, January is the cheapest month in which you can book a flight from Australia to Portland (average of $908). Flying from Australia to Portland in December is currently the most expensive (average of $1,407). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Australia to Portland

Melbourne to Portland flights

Sydney to Portland flights

Perth to Portland flights

Brisbane to Boise flights

Brisbane to Portland flights

Adelaide to Portland flights

Canberra to Portland flights

Cairns to Portland flights

Top 9 airlines flying from Australia to Portland

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$987	Average$1,701	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Air Canada	Cheapest$1,010	Average$1,689	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Hawaiian Airlines	Cheapest$1,229	Average$2,029	FlexibilityNo cancel fee	On-time85%	Search Hawaiian Airlines flights
Alaska Airlines	Cheapest$1,333	Average$1,936	FlexibilityNo cancel fee	On-time75%	Search Alaska Airlines flights
Air New Zealand	Cheapest$1,383	Average$1,514	FlexibilityNo cancel fee	On-time78%	Search Air New Zealand flights
Qantas Airways	Cheapest$1,386	Average$1,750	FlexibilityNo cancel fee	On-time74%	Search Qantas Airways flights
Virgin Australia	Cheapest$1,400	Average$2,421	FlexibilityNo cancel fee	On-time80%	Search Virgin Australia flights
Delta	Cheapest$1,559	Average$1,723	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
Singapore Airlines	Cheapest$1,893	Average$2,224	FlexibilityNo cancel fee	On-time81%	Search Singapore Airlines flights

Fly with Cheapflights

How does Cheapflights help users find flights from Australia to Portland?

Cheapflights helps you search for flights from Australia to Portland via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Australia to Portland?

Cheapflights simply makes it quick and affordable to book flights from Australia to Portland by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Australia to Portland with no change fees?

Certainly. Search results for flights to Portland from Australia shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Australia to Portland become cheaper?

Of course! You can now track prices for flights from Australia to Portland and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from Australia to Portland from $667

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Australia to Portland

Keep the following information in mind while searching for Australia to Portland flight deals. Data was last updated 19 August 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Australia to Portland

Cheapest flights from Australia to PortlandExplore the most affordable flight options available from Australia to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 August 2025.

Explore the most affordable flight options available from Australia to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 August 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Australia to Portland that are best for you.

Best time to book a flight from Australia to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from Australia with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Australia to Portland

What is the cheapest month to book a flight from Australia to Portland?

What is the cheapest time of day to fly from AU to PDX?

Find hourly flight availability from Australia to Portland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 19 August 2025.

Reviews of airlines servicing Portland

Check out reviews from past customers who have flown with Hawaiian Airlines, Qantas Airways, andVirgin Australia from Australia to Portland to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Australia to Portland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Portland from Australia?

How long is the flight from Australia to Portland?

What are the cheapest airlines to fly from Australia to Portland one-way?

What are the most popular routes from Australia to Portland?

Can I find deals for flights from Australia to Portland that include hotel bookings?

How can I find direct flights from Australia to Portland?

Can I find deals for business class flights from Australia to Portland?

What is the cheapest month to book a flight from Australia to Portland?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Australia to Portland

See prices for flight routes from nearby airports that may be better suited for you.

Top 9 airlines flying from Australia to Portland

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Australia to Portland?

Why should you use Cheapflights to find cheap flight tickets from Australia to Portland?

Can Cheapflights find flights from Australia to Portland with no change fees?

Can Cheapflights notify me if prices for flights from Australia to Portland become cheaper?

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Cheapest flights from Australia to Portland
Explore the most affordable flight options available from Australia to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 August 2025.