How long is the flight from Portland to Australia?

Departing from Portland to Australia will take you 22h 37m. Portland and Australia are separated by a distance of 12350 km. This flight may include one or multiple stops. Find deals

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 ANA ($848), United Airlines ($863), and Qantas Airways ($1,122). Find deals

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. Find deals

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).

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.

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.

$801+ Flights from Portland to Australia

Cheap flight deals from Portland to Australia

Round-trip from	$1,428
One-way from	$801
Popular in	December
Cheapest in	September
Average price	$1,507

Qantas Airways
24/2-7/3
3 total stops
54h 40m total
Portland to Australia

Search Deals

28/2
2 total stops
25h 45m total
Portland to Australia

Search Deals

Highest demand for flights based on searches. 8% potential increase in price ($238 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($59 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 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 19 September 2025.

Tue 23/917:35PDX - SYD

1 stop20h 30mQantas Airways

Tue 30/909:10SYD - PDX

1 stop21h 14mQantas Airways

Deal found 17/9$1,416

Tue 23/912:04PDX - SYD

2 stops26h 01mAmerican Airlines

Tue 30/909:10SYD - PDX

1 stop29h 06mAmerican Airlines

Deal found 17/9$1,455

Wed 17/908:31PDX - SYD

1 stop29h 34mAmerican Airlines

Wed 24/912:10SYD - PDX

1 stop26h 17mAmerican Airlines

Deal found 16/9$1,466

Thu 18/913:01PDX - MEL

2 stops26h 14mUnited Airlines

Thu 2/1010:55MEL - PDX

1 stop24h 38mUnited Airlines

Deal found 16/9$1,469

Sat 15/1115:54PDX - MEL

1 stop23h 06mUnited Airlines

Sat 29/1113:00MEL - PDX

1 stop24h 36mUnited Airlines

Deal found 18/9$1,472

Mon 22/914:56PDX - SYD

1 stop23h 09mQantas Airways

Wed 24/909:10SYD - PDX

1 stop27h 00mQantas Airways

Deal found 18/9$1,472

Sun 21/910:30PDX - SYD

1 stop28h 00mMultiple Airlines

Tue 23/917:45SYD - PDX

1 stop18h 25mMultiple Airlines

Deal found 18/9$1,473

Sat 18/1017:15PDX - BNE

1 stop20h 15mUnited Airlines

Fri 24/1010:30BNE - PDX

1 stop21h 12mUnited Airlines

Deal found 16/9$1,476

Sun 21/913:01PDX - SYD

2 stops24h 59mUnited Airlines

Wed 1/1009:30SYD - PDX

2 stops24h 51mUnited Airlines

Deal found 17/9$1,481

Thu 20/1106:00PDX - MEL

1 stop33h 00mUnited Airlines

Fri 28/1113:00MEL - PDX

1 stop24h 36mUnited Airlines

Deal found 17/9$1,482

Mon 22/914:50PDX - SYD

1 stop23h 15mQantas Airways

Sat 27/917:45SYD - PDX

1 stop18h 25mQantas Airways

Deal found 19/9$1,489

Wed 5/1122:28PDX - SYD

2 stops26h 17mAlaska Airlines

Tue 18/1121:40SYD - PDX

2 stops21h 29mAlaska Airlines

Deal found 17/9$1,490

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 19 September 2025.

Fri 13/305:45PDX - MEL

2 stops32h 45mUnited Airlines

Thu 26/310:30MEL - PDX

2 stops31h 49mUnited Airlines

Deal found 17/9$1,472

Tue 10/216:00PDX - SYD

2 stops32h 45mHawaiian Airlines

Sat 28/221:40SYD - PDX

2 stops19h 46mHawaiian Airlines

Deal found 19/9$1,487

Fri 6/310:00PDX - MEL

1 stop27h 00mDelta

Sun 15/309:10MEL - PDX

1 stop25h 05mDelta

Deal found 18/9$1,543

Thu 26/215:43PDX - SYD

2 stops22h 37mQantas Airways

Tue 10/321:25SYD - PDX

1 stop17h 13mQantas Airways

Deal found 19/9$1,654

Wed 25/207:10PDX - SYD

1 stop17h 35mAlaska Airlines

Tue 17/321:40SYD - PDX

1 stop26h 20mAlaska Airlines

Deal found 17/9$1,707

Thu 12/214:40PDX - SYD

1 stop21h 45mMultiple Airlines

Sat 21/217:45SYD - PDX

1 stop21h 50mMultiple Airlines

Deal found 18/9$1,707

Sat 7/210:40PDX - PER

2 stops33h 20mQatar Airways

Tue 24/222:45PER - PDX

2 stops41h 18mQatar Airways

Deal found 17/9$2,050

Sat 14/213:32PDX - OOL

2 stops26h 13mAir New Zealand

Sat 21/208:20OOL - PDX

3 stops28h 10mAir New Zealand

Deal found 17/9$2,332

Sat 14/209:50PDX - OOL

3 stops34h 20mANA

Sat 21/214:50OOL - PDX

3 stops45h 40mANA

Deal found 18/9$2,463

Thu 23/1019:35PDX - MEL

1 stop19h 40mUnited Airlines

Fri 31/1012:00MEL - PDX

1 stop20h 46mUnited Airlines

Deal found 16/9$1,472

Sat 21/215:50PDX - BNE

1 stop21h 40mUnited Airlines

Sat 14/310:40BNE - PDX

1 stop26h 25mUnited Airlines

Deal found 17/9$1,476

Mon 23/207:10PDX - SYD

1 stop17h 35mAlaska Airlines

Tue 17/321:40SYD - PDX

2 stops25h 40mAlaska Airlines

Deal found 17/9$1,707

Tue 13/109:10PDX - SYD

2 stops26h 40mDelta

Wed 28/110:40SYD - PDX

1 stop20h 13mDelta

Deal found 17/9$1,719

Thu 23/1011:05PDX - BNE

1 stop26h 25mUnited Airlines

Fri 31/1010:40BNE - PDX

1 stop21h 06mUnited Airlines

Deal found 16/9$1,476

Sat 14/214:50PDX - OOL

2 stops24h 55mMultiple Airlines

Sat 21/210:55OOL - PDX

2 stops23h 33mMultiple Airlines

Deal found 16/9$1,820

Sat 21/207:10PDX - SYD

1 stop17h 35mAlaska Airlines

Thu 19/321:40SYD - PDX

1 stop26h 20mAlaska Airlines

Deal found 17/9$1,707

Sat 14/219:49PDX - BNE

1 stop17h 41mUnited Airlines

Sat 21/211:40BNE - PDX

1 stop25h 07mUnited Airlines

Deal found 19/9$1,476

Fri 31/1007:09PDX - OOL

2 stops40h 01mMultiple Airlines

Fri 7/1115:25OOL - PDX

2 stops23h 49mMultiple Airlines

Deal found 15/9$1,869

Sat 21/207:10PDX - SYD

1 stop17h 35mAlaska Airlines

Fri 20/321:40SYD - PDX

1 stop19h 10mAlaska Airlines

Deal found 17/9$1,707

Sat 21/219:49PDX - BNE

1 stop17h 41mUnited Airlines

Fri 17/410:30BNE - PDX

1 stop21h 12mUnited Airlines

Deal found 16/9$1,476

Mon 23/207:10PDX - SYD

1 stop17h 35mAlaska Airlines

Thu 19/321:40SYD - PDX

1 stop26h 20mAlaska Airlines

Deal found 17/9$1,707

Tue 14/1013:25PDX - PER

2 stops38h 15mQatar Airways

Tue 4/1122:45PER - PDX

2 stops37h 52mQatar Airways

Deal found 18/9$2,345

Sat 15/1108:30PDX - MEL

2 stops30h 30mUnited Airlines

Fri 21/1113:00MEL - PDX

2 stops27h 26mUnited Airlines

Deal found 18/9$1,479

Sat 1/1117:55PDX - OOL

2 stops29h 15mMultiple Airlines

Sat 8/1114:20OOL - PDX

2 stops39h 15mMultiple Airlines

Deal found 17/9$1,971

Thu 19/208:30PDX - BNE

2 stops29h 00mUnited Airlines

Fri 17/410:30BNE - PDX

2 stops27h 19mUnited Airlines

Deal found 16/9$1,482

Tue 18/1117:55PDX - AVV

2 stops25h 15mMultiple Airlines

Wed 4/206:00AVV - PDX

2 stops24h 05mMultiple Airlines

Deal found 18/9$2,021

Tue 24/207:30PDX - AVV

2 stops37h 20mQantas Airways

Sun 14/620:40AVV - PDX

2 stops42h 50mQantas Airways

Deal found 18/9$2,704

Thu 5/310:25PDX - MEL

1 stop28h 35mUnited Airlines

Sun 15/312:00MEL - PDX

1 stop24h 36mUnited Airlines

Deal found 18/9$1,502

Thu 13/1122:28PDX - PER

2 stops33h 27mMultiple Airlines

Wed 3/1217:05PER - PDX

2 stops33h 45mMultiple Airlines

Deal found 19/9$2,025

Tue 24/214:50PDX - AVV

2 stops23h 55mQantas Airways

Tue 26/520:40AVV - PDX

2 stops42h 50mQantas Airways

Deal found 18/9$2,712

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

Thu 18/910:55PDX - MEL

2 stops28h 20mUnited Airlines

Thu 2/1010:55MEL - PDX

2 stops27h 11mUnited Airlines

Deal found 16/9$1,469

Sat 20/917:50PDX - SYD

2 stops43h 45mDelta

Tue 30/909:25SYD - PDX

1 stop19h 20mDelta

Deal found 17/9$1,516

Sun 21/910:30PDX - SYD

1 stop28h 00mMultiple Airlines

Tue 23/917:45SYD - PDX

1 stop18h 25mMultiple Airlines

Deal found 18/9$1,473

Sun 21/917:40PDX - SYD

1 stop20h 15mUnited Airlines

Sun 28/909:30SYD - PDX

2 stops22h 35mUnited Airlines

Deal found 17/9$1,481

Mon 22/914:56PDX - SYD

1 stop23h 09mQantas Airways

Wed 24/909:10SYD - PDX

1 stop27h 00mQantas Airways

Deal found 18/9$1,472

Mon 22/914:50PDX - SYD

1 stop23h 15mQantas Airways

Sat 27/917:45SYD - PDX

1 stop18h 25mQantas Airways

Deal found 19/9$1,489

Mon 22/917:10PDX - SYD

2 stops20h 25mDelta

Mon 29/909:25SYD - PDX

2 stops25h 38mDelta

Deal found 17/9$1,498

Tue 23/917:35PDX - SYD

1 stop20h 30mQantas Airways

Tue 30/909:10SYD - PDX

1 stop21h 14mQantas Airways

Deal found 17/9$1,416

Tue 23/912:04PDX - SYD

2 stops26h 01mAmerican Airlines

Tue 30/909:10SYD - PDX

2 stops24h 54mAmerican Airlines

Deal found 17/9$1,455

Tue 23/913:01PDX - SYD

2 stops24h 59mUnited Airlines

Tue 30/909:30SYD - PDX

2 stops28h 36mUnited Airlines

Deal found 17/9$1,496

Sat 18/1017:15PDX - BNE

1 stop20h 15mUnited Airlines

Fri 24/1010:30BNE - PDX

1 stop21h 12mUnited Airlines

Deal found 16/9$1,476

Thu 23/1019:35PDX - MEL

1 stop19h 40mUnited Airlines

Fri 31/1012:00MEL - PDX

1 stop20h 46mUnited Airlines

Deal found 16/9$1,472

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 19 September 2025.

Tue 24/207:40PDX - SYD

2 stops28h 45mMultiple Airlines

Deal found 18/9$801

Wed 22/1013:25PDX - SYD

2 stops48h 05mMultiple Airlines

Deal found 17/9$802

Wed 25/209:40PDX - SYD

2 stops26h 45mMultiple Airlines

Deal found 18/9$808

Sun 9/1113:21PDX - MEL

3 stops39h 14mMultiple Airlines

Deal found 17/9$832

Mon 1/1209:50PDX - SYD

2 stops39h 25mANA

Deal found 17/9$848

Mon 23/208:40PDX - SYD

2 stops27h 45mMultiple Airlines

Deal found 18/9$849

Sun 22/208:40PDX - SYD

2 stops27h 45mMultiple Airlines

Deal found 18/9$851

Sat 8/1122:28PDX - AVV

3 stops53h 47mMultiple Airlines

Deal found 17/9$861

Thu 30/1015:54PDX - MEL

1 stop23h 06mUnited Airlines

Deal found 17/9$863

Wed 29/1023:59PDX - MEL

2 stops39h 01mUnited Airlines

Deal found 17/9$869

Wed 22/1017:45PDX - SYD

1 stop20h 20mQantas Airways

Deal found 17/9$873

Sat 8/1107:00PDX - BNE

3 stops30h 30mUnited Airlines

Deal found 17/9$876

Fly from

Fly to

Route

Depart

Return

Price

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Fri 13/3

05:45-08:30

2 stops32h 45m

Melbourne

Thu 26/3

10:30-00:19

2 stops31h 49m

$1,472

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Thu 23/10

19:35-09:15

1 stop19h 40m

Melbourne

Fri 31/10

12:00-14:46

1 stop20h 46m

$1,472

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Sat 21/2

15:50-07:30

1 stop21h 40m

Brisbane

Sat 14/3

10:40-20:05

1 stop26h 25m

$1,476

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Thu 23/10

11:05-06:30

1 stop26h 25m

Brisbane

Fri 31/10

10:40-14:46

1 stop21h 06m

$1,476

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Sat 14/2

19:49-07:30

1 stop17h 41m

Brisbane

Sat 21/2

11:40-18:47

1 stop25h 07m

$1,476

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Sat 21/2

19:49-07:30

1 stop17h 41m

Brisbane

Fri 17/4

10:30-14:42

1 stop21h 12m

$1,476

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Sat 15/11

08:30-10:00

2 stops30h 30m

Melbourne

Fri 21/11

13:00-21:26

2 stops27h 26m

$1,479

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Thu 19/2

08:30-07:30

2 stops29h 00m

Brisbane

Fri 17/4

10:30-20:49

2 stops27h 19m

$1,482

PortlandSydney

PDX - SYD

PDXSYD

Portland

Tue 10/2

16:00-19:45

2 stops32h 45m

Sydney Kingsford Smith

Sat 28/2

21:40-22:26

2 stops19h 46m

$1,487

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Thu 5/3

10:25-10:00

1 stop28h 35m

Melbourne

Sun 15/3

12:00-18:36

1 stop24h 36m

$1,502

Flights are sorted by cheapest return flights first.

Deals found on 18/9

Showing 1-10 of 60 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.

Reviews of airlines servicing Australia

Check out reviews from past customers who have flown with United Airlines from Portland to Australia 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.

United Airlines

7.4

Good

8,926 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Julia,Sept 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.

United Airlines

7.4

Good

8,926 reviews

United Airlines

7.4

Good

8,926 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Julia,Sept 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.

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.
How long is the flight from Portland to Australia?
Departing from Portland to Australia will take you 22h 37m. Portland and Australia are separated by a distance of 12350 km. This flight may include one or multiple stops.
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 ANA ($848), United Airlines ($863), and Qantas Airways ($1,122).
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$1,253	Average$1,749	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 $801

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 24/2. 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 19 September 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 19 September 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 19 September 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 19 September 2025.

Reviews of airlines servicing Australia

Check out reviews from past customers who have flown with United Airlines from Portland to Australia 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 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?

How long is the flight 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 19 September 2025.