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

The cheapet airlines for a one-way flight from Portland to Australia are Air Canada ($606), American Airlines ($659), and United Airlines ($669). Find deals

What are the most popular routes from Portland to Australia?

When deciding which route to take from Portland to Australia, consider Portland - Sydney Kingsford Smith, Portland - Melbourne or Portland - Melbourne Avalon, as they are the most popular.

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

Users have found that booking a flight from Portland to Australia at least 43 days early can save you up to 12% on average compared to booking a flight this week. If booking 43 days before your flight isn’t an option for you, users have found flights from Portland to Australia for as little as $1,434 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $2,381 for flights departing within the next 3 days.

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

The best pricing can be found in the month of May. Prices to Australia from Portland average $1,782. You can even find prices in May for less than $1,782, as users have found deals to Australia from as low as $1,400. The month of December appears to be one of the more expensive times to travel to Australia from Portland. Flying in the targeted month can save you up to 29%.

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

If you book a flight to Australia from Portland, you will be flying from Portland, which is the city’s only airport. Portland (PDX) is located 9.7 km from the centre of Portland.

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

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

How can I find direct flights from Portland to Australia?

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

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

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

$2,861+ Flights from Portland to Australia

Cheap flight deals from Portland to Australia

Round-trip from	$1,193
One-way from	$606
Popular in	December
Cheapest in	May
Average price	$1,669

Air Canada
20/8-1/10
2 total stops
35h 41m total
Portland to Australia

Search Deals

Air Canada
18/8
1 total stop
28h 15m total
Portland to Australia

Search Deals

Highest demand for flights based on searches. 13% potential increase in price ($417 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($76 potential savings vs. average return price).

Search Deals

Average for round-trip flights in June 2025

Search Deals

Find flight deals from Portland to Australia

Cheapest flights from Portland to Australia
Explore the most affordable flight options available from Portland to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 June 2025.

Wed 20/819:40PDX - SYD

1 stop18h 40mAir Canada

Wed 1/1009:20SYD - PDX

1 stop17h 01mAir Canada

Deal found 11/6$1,193

Sat 9/814:56PDX - SYD

1 stop23h 09mQantas Airways

Sat 23/817:45SYD - PDX

1 stop20h 30mQantas Airways

Deal found 12/6$1,217

Sun 14/919:40PDX - MEL

2 stops22h 55mMultiple Airlines

Sun 28/906:00MEL - PDX

2 stops20h 21mMultiple Airlines

Deal found 11/6$1,279

Thu 28/814:56PDX - SYD

1 stop23h 34mAmerican Airlines

Thu 11/917:45SYD - PDX

2 stops22h 26mAmerican Airlines

Deal found 11/6$1,290

Sat 9/812:35PDX - SYD

1 stop25h 00mDelta

Sat 30/809:25SYD - PDX

1 stop23h 34mDelta

Deal found 11/6$1,305

Thu 28/813:01PDX - SYD

2 stops24h 59mUnited Airlines

Fri 12/909:30SYD - PDX

2 stops22h 35mUnited Airlines

Deal found 11/6$1,313

Fri 29/810:05PDX - BNE

1 stop28h 00mAir Canada

Fri 12/910:00BNE - PDX

1 stop25h 46mAir Canada

Deal found 12/6$1,383

Tue 12/817:35PDX - SYD

1 stop28h 05mMultiple Airlines

Sun 17/816:20SYD - PDX

1 stop17h 00mMultiple Airlines

Deal found 11/6$1,507

Sun 14/917:35PDX - AVV

2 stops27h 35mMultiple Airlines

Sun 28/920:55AVV - PDX

2 stops33h 29mMultiple Airlines

Deal found 11/6$1,511

Fri 29/814:56PDX - BNE

2 stops26h 44mQantas Airways

Fri 12/914:15BNE - PDX

2 stops24h 04mQantas Airways

Deal found 12/6$1,535

Wed 27/810:05PDX - SYD

2 stops30h 20mANA

Wed 10/911:50SYD - PDX

2 stops23h 56mANA

Deal found 11/6$1,566

Thu 7/819:40PDX - MEL

2 stops22h 25mAir Canada

Tue 12/806:00MEL - PDX

2 stops34h 01mAir Canada

Deal found 12/6$1,567

Best flights from Portland to Australia
Discover carefully curated flight deals from Portland to Australia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 13 June 2025.

Wed 20/819:40PDX - SYD

1 stop18h 40mAir Canada

Wed 1/1009:20SYD - PDX

1 stop17h 01mAir Canada

Deal found 11/6$1,193

Sat 9/814:56PDX - SYD

1 stop23h 09mQantas Airways

Sat 23/817:45SYD - PDX

1 stop20h 30mQantas Airways

Deal found 12/6$1,217

Sun 14/919:40PDX - MEL

2 stops22h 55mMultiple Airlines

Sun 28/906:00MEL - PDX

2 stops20h 21mMultiple Airlines

Deal found 11/6$1,279

Thu 28/814:56PDX - SYD

1 stop23h 34mAmerican Airlines

Thu 11/917:45SYD - PDX

2 stops22h 26mAmerican Airlines

Deal found 11/6$1,290

Sat 9/812:35PDX - SYD

1 stop25h 00mDelta

Sat 30/809:25SYD - PDX

1 stop23h 34mDelta

Deal found 11/6$1,305

Thu 28/813:01PDX - SYD

2 stops24h 59mUnited Airlines

Fri 12/909:30SYD - PDX

2 stops22h 35mUnited Airlines

Deal found 11/6$1,313

Wed 27/810:05PDX - SYD

2 stops30h 20mANA

Wed 10/911:50SYD - PDX

2 stops23h 56mANA

Deal found 11/6$1,566

Fri 31/1007:09PDX - SYD

1 stop18h 36mAlaska Airlines

Sun 9/1121:40SYD - PDX

1 stop26h 54mAlaska Airlines

Deal found 10/6$1,779

Tue 14/1015:25PDX - BNE

2 stops23h 20mAir New Zealand

Tue 4/1108:20BNE - PDX

2 stops28h 04mAir New Zealand

Deal found 11/6$1,824

Fri 29/807:40PDX - MEL

2 stops33h 25mHawaiian Airlines

Sun 31/816:30MEL - PDX

2 stops23h 10mHawaiian Airlines

Deal found 10/6$1,890

Wed 29/1013:58PDX - SYD

2 stops38h 12mFiji Airways

Fri 7/1114:00SYD - PDX

2 stops27h 01mFiji Airways

Deal found 10/6$2,125

Tue 14/1006:05PDX - PER

2 stops26h 50mSingapore Airlines

Mon 3/1101:10PER - PDX

2 stops25h 22mSingapore Airlines

Deal found 11/6$2,349

Last-minute flights from Portland to Australia
Discover last-minute flight deals from Portland to Australia. Data last updated 13 June 2025 and is based on user searches.

Tue 17/617:55PDX - MEL

2 stops24h 35mFiji Airways

Tue 1/712:55MEL - PDX

2 stops24h 55mFiji Airways

Deal found 12/6$12,996

Tue 17/612:31PDX - MEL

2 stops27h 59mQantas Airways

Wed 2/711:55MEL - PDX

1 stop25h 35mQantas Airways

Deal found 12/6$15,928

Wed 18/610:00PDX - MEL

2 stops32h 35mAir Canada

Tue 1/706:00MEL - PDX

2 stops20h 30mAir Canada

Deal found 12/6$14,831

Thu 19/600:09PDX - SYD

2 stops41h 41mCathay Pacific

Fri 27/607:40SYD - PDX

2 stops31h 53mCathay Pacific

Deal found 12/6$16,788

Fri 20/605:00PDX - SYD

2 stops33h 00mUnited Airlines

Fri 27/609:30SYD - PDX

2 stops39h 12mUnited Airlines

Deal found 12/6$2,382

Fri 20/612:35PDX - SYD

1 stop25h 00mDelta

Fri 27/609:25SYD - PDX

1 stop18h 45mDelta

Deal found 10/6$2,739

Fri 20/613:20PDX - MEL

1 stop25h 55mUnited Airlines

Fri 27/610:55MEL - PDX

1 stop21h 00mUnited Airlines

Deal found 11/6$3,061

Fri 20/619:35PDX - MEL

3 stops28h 50mMultiple Airlines

Fri 27/614:45MEL - PDX

2 stops24h 45mMultiple Airlines

Deal found 11/6$4,667

Fri 20/617:55PDX - MEL

2 stops35h 20mCathay Pacific

Mon 30/623:45MEL - PDX

2 stops39h 48mCathay Pacific

Deal found 12/6$15,491

Fri 20/613:44PDX - SYD

3 stops46h 36mBritish Airways

Fri 27/614:40SYD - PDX

2 stops43h 55mBritish Airways

Deal found 11/6$15,664

Fri 20/607:55PDX - MEL

2 stops44h 40mAmerican Airlines

Thu 3/714:45MEL - PDX

2 stops48h 45mAmerican Airlines

Deal found 12/6$17,456

Sun 22/607:40PDX - MEL

3 stops66h 45mTurkish Airlines

Mon 30/621:20MEL - PDX

3 stops62h 59mTurkish Airlines

Deal found 12/6$17,431

One-way flights from Portland to Australia
Search for one-way flight options from Portland to Australia. Find affordable one-way fares based on user searches. Data last updated 13 June 2025.

Mon 18/810:05PDX - SYD

1 stop28h 15mAir Canada

Deal found 11/6$606

Fri 1/815:25PDX - MEL

2 stops29h 20mMultiple Airlines

Deal found 11/6$626

Mon 11/811:35PDX - SYD

1 stop26h 20mAmerican Airlines

Deal found 10/6$659

Tue 17/607:00PDX - SYD

2 stops31h 00mUnited Airlines

Deal found 10/6$669

Mon 11/815:10PDX - SYD

3 stops27h 35mMultiple Airlines

Deal found 10/6$863

Mon 28/715:10PDX - PER

3 stops59h 00mMultiple Airlines

Deal found 9/6$950

Fri 1/819:35PDX - AVV

3 stops45h 10mMultiple Airlines

Deal found 11/6$963

Sun 27/706:10PDX - PER

2 stops43h 55mQantas Airways

Deal found 12/6$1,093

Fri 1/813:37PDX - MEL

1 stop25h 38mUnited Airlines

Deal found 11/6$1,242

Sun 17/800:46PDX - SYD

2 stops36h 49mWestJet

Deal found 11/6$5,497

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

PortlandSydney

PDX - SYD

PDXSYD

Portland

Wed 20/8

19:40-07:20

1 stop18h 40m

Sydney Kingsford Smith

Wed 1/10

09:20-09:21

1 stop17h 01m

$1,193

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sat 9/8

14:56-07:05

1 stop23h 09m

Sydney Kingsford Smith

Sat 23/8

17:45-21:15

1 stop20h 30m

$1,217

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Sun 14/9

19:40-11:35

2 stops22h 55m

Melbourne

Sun 28/9

06:00-09:21

2 stops20h 21m

$1,279

PortlandSydney

PDX - SYD

PDXSYD

Portland

Thu 28/8

14:56-07:30

1 stop23h 34m

Sydney Kingsford Smith

Thu 11/9

17:45-23:11

2 stops22h 26m

$1,290

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sat 9/8

12:35-06:35

1 stop25h 00m

Sydney Kingsford Smith

Sat 30/8

09:25-15:59

1 stop23h 34m

$1,305

PortlandSydney

PDX - SYD

PDXSYD

Portland

Thu 28/8

13:01-07:00

2 stops24h 59m

Sydney Kingsford Smith

Fri 12/9

09:30-15:05

2 stops22h 35m

$1,313

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Fri 29/8

10:05-07:05

1 stop28h 00m

Brisbane

Fri 12/9

10:00-18:46

1 stop25h 46m

$1,383

PortlandSydney

PDX - SYD

PDXSYD

Portland

Tue 12/8

17:35-14:40

1 stop28h 05m

Sydney Kingsford Smith

Sun 17/8

16:20-16:20

1 stop17h 00m

$1,507

PortlandMelbourne

PDX - AVV

PDXAVV

Portland

Sun 14/9

17:35-14:10

2 stops27h 35m

Melbourne Avalon

Sun 28/9

20:55-13:24

2 stops33h 29m

$1,511

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Fri 29/8

14:56-10:40

2 stops26h 44m

Brisbane

Fri 12/9

14:15-21:19

2 stops24h 04m

$1,535

Flights are sorted by cheapest return flights first.

Deals found on 11/6

Showing 1-10 of 40 results

Best time to book a flight from Portland to Australia

Have a flexible travel schedule? Discover the best time to fly to Australia from Portland 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 Portland to Australia

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

Currently, May is the cheapest month in which you can book a flight from Portland to Australia (average of $129). Flying from Portland to Australia in October is currently the most expensive (average of $171). 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 PDX to AU?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Portland to Australia as you normally would.

Rainfall in Australia by month

In terms of precipitation, rainfall in Australia ranges from 50.0 - 130.0 inches per month. March is typically the wettest month, when rainfall can reach 130.0 mm. September is typically the driest time to visit Australia when rainfall is around 50.0 mm.

Temperature in Australia by month

If weather is an important factor for your trip to Australia, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 22.0 C. Travellers hoping to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 11.0 C).

Reviews of airlines servicing Australia

Read through reviews of airlines operating flights from Portland to Australia, such as Air Tahiti Nui, ANA and Fiji Airways. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Air Tahiti Nui

8.7

Very Good

64 reviews

Check prices

Reviews

1 / 2

10.0

Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

Air Tahiti Nui

8.7

Very Good

64 reviews

Air Tahiti Nui

8.7

Very Good

64 reviews

Check prices

Reviews

1 / 2

10.0

Excellent

Isabelle,Apr 2023

AKL - PPT

ANA

8.3

Very Good

882 reviews

Air Tahiti Nui

8.7

Very Good

64 reviews

Check prices

Reviews

1 / 2

10.0

Excellent

Isabelle,Apr 2023

AKL - PPT

Fiji Airways

8.1

Very Good

194 reviews

Air Tahiti Nui

8.7

Very Good

64 reviews

Check prices

Reviews

1 / 2

10.0

Excellent

Isabelle,Apr 2023

AKL - PPT

Singapore Airlines

8.1

Very Good

1,302 reviews

Air Tahiti Nui

8.7

Very Good

64 reviews

Check prices

Reviews

1 / 2

10.0

Excellent

Isabelle,Apr 2023

AKL - PPT

Delta

8.0

Very Good

7,946 reviews

Air Tahiti Nui

8.7

Very Good

64 reviews

Check prices

Reviews

1 / 2

10.0

Excellent

Isabelle,Apr 2023

AKL - PPT

Related info for your journey

What airport do you fly from for flights from Portland to Australia?
If you book a flight to Australia from Portland, you will be flying from Portland, which is the city’s only airport. Portland (PDX) is located 9.7 km from the centre of Portland.
What are the cheapest airlines to fly from Portland to Australia one-way?
The cheapet airlines for a one-way flight from Portland to Australia are Air Canada ($606), American Airlines ($659), and United Airlines ($669).
What are the most popular routes from Portland to Australia?
When deciding which route to take from Portland to Australia, consider Portland - Sydney Kingsford Smith, Portland - Melbourne or Portland - Melbourne Avalon, as they are the most popular.
Can I find deals for flights from Portland to Australia that include hotel bookings?
Yes. In addition to deals on Portland to Australia flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Portland to Australia?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Australia.
Can I find deals for business class flights from Portland to Australia?
Yes. Cheapflights offers flight deals from Portland to Australia 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 Portland to Australia?
Currently, May is the cheapest month in which you can book a flight from Portland to Australia (average of $129). Flying from Portland to Australia in October is currently the most expensive (average of $171). 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

Top airline flying from Portland to Australia

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$1,383	Average$1,919	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

Fly with Cheapflights

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

Cheapflights helps you search for flights from Portland to Australia 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 Portland to Australia?

Cheapflights helps you find that perfect flight to Australia from Portland by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Yes, we can. To see specific flights from Portland to Australia with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Yes, Cheapflights offers price alerts on Portland to Australia flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

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 Portland to Australia from $606

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 18/8. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Portland to Australia

Keep the following information in mind while searching for Portland to Australia flight deals. Data was last updated 13 June 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Portland to Australia

Cheapest flights from Portland to AustraliaExplore the most affordable flight options available from Portland to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 June 2025.

Explore the most affordable flight options available from Portland to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 June 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Portland to Australia

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

Cheapflights Insights

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

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

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

Find hourly flight availability from Portland to Australia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 13 June 2025.

Rainfall in Australia by month

Plan your trip to Australia by taking into account the average rainfall totals by month.

Temperature in Australia by month

Plan your trip to Australia by taking into account the average temperature totals by month.

Reviews of airlines servicing Australia

Read through reviews of airlines operating flights from Portland to Australia, such as Air Tahiti Nui, ANA and Fiji Airways. Users have also rated airlines 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 Portland to Australia. 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 from for flights from Portland to Australia?

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

What are the most popular routes from Portland to Australia?

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

How can I find direct flights from Portland to Australia?

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

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

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 Portland to Australia

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

Top airline flying from Portland to Australia

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 Portland to Australia?

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

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

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

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Portland to Australia
Explore the most affordable flight options available from Portland to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 June 2025.