How long is the flight from Portland to Australia?

Departing from Portland to Australia will take you 19h 50m. Portland and Australia are separated by a distance of 13053 km. This flight may include one or multiple stops.

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.

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 - Brisbane, as they are the most popular.

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

United Airlines, Qantas Airways and Air Canada are the most popular airlines when flying from Portland to Australia.

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.

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.

$821+ Cheap Flights from Portland to Australia

Cheap flight deals from Portland to Australia

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

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 15 September 2026.

Tue 27/1019:15 -

2 stops24h 20m

Tue 3/1107:10 -

2 stops21h 16m

Deal found 12/9$1,248

Tue 27/1017:03 -

1 stop22h 27m

Tue 3/1122:45 -

1 stop20h 16m

Deal found 12/9$1,278

Tue 20/1010:10 -

1 stop27h 55m

Tue 3/1110:45 -

1 stop16h 41m

Deal found 15/9$1,290

Tue 20/1015:30 -

1 stop22h 35m

Tue 3/1106:05 -

2 stops21h 21m

Deal found 15/9$1,320

Sun 18/1019:45 -

2 stops22h 25m

Sun 25/1006:05 -

2 stops21h 21m

Deal found 15/9$1,335

Wed 28/1015:20 -

2 stops35h 20m

Wed 4/1106:00 -

2 stops27h 41m

Deal found 13/9$1,336

Tue 27/1019:15 -

2 stops24h 20m

Tue 3/1106:05 -

2 stops22h 21m

Deal found 12/9$1,342

Tue 22/915:30 -

1 stop22h 35m

Tue 20/1010:00 -

1 stop21h 46m

Deal found 14/9$1,343

Sun 18/1019:45 -

2 stops26h 20m

Sun 25/1006:00 -

2 stops21h 26m

Deal found 14/9$1,345

Sun 1/1119:15 -

2 stops25h 20m

Mon 9/1107:45 -

2 stops20h 41m

Deal found 11/9$1,348

Mon 2/1119:15 -

2 stops24h 10m

Mon 16/1106:05 -

2 stops21h 21m

Deal found 15/9$1,349

Sun 25/1019:15 -

2 stops29h 45m

Sun 1/1106:00 -

2 stops26h 41m

Deal found 10/9$1,350

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 15 September 2026.

Sun 25/1019:15 -

2 stops29h 45m

Sun 1/1106:00 -

2 stops26h 41m

Deal found 10/9$1,350

Fri 5/212:40 -

2 stops24h 50m

Mon 22/211:20 -

1 stop19h 05m

Deal found 14/9$1,565

Sat 30/117:10 -

1 stop19h 50m

Sun 7/210:10 -

1 stop21h 08m

Deal found 14/9$1,723

Sat 24/1014:30 -

2 stops32h 55m

Wed 28/1006:00 -

2 stops24h 35m

Deal found 10/9$2,056

Mon 2/1115:20 -

2 stops32h 35m

Thu 5/1122:30 -

2 stops36h 01m

Deal found 14/9$2,124

Sat 14/1115:15 -

2 stops28h 55m

Sat 28/1106:40 -

2 stops20h 46m

Deal found 11/9$1,412

Tue 27/1019:26 -

2 stops35h 54m

Tue 3/1117:00 -

3 stops41h 20m

Deal found 14/9$2,884

Tue 27/1015:40 -

3 stops57h 45m

Tue 3/1121:35 -

3 stops68h 40m

Deal found 14/9$3,107

Tue 9/208:45 -

2 stops28h 45m

Wed 24/211:20 -

1 stop31h 34m

Deal found 14/9$1,575

Mon 19/1013:10 -

2 stops25h 40m

Sun 25/1011:00 -

1 stop25h 47m

Deal found 14/9$1,730

Sat 17/1023:30 -

2 stops38h 00m

Sat 31/1010:20 -

1 stop19h 02m

Deal found 13/9$1,587

Tue 3/1119:15 -

2 stops27h 15m

Tue 17/1115:15 -

2 stops43h 16m

Deal found 13/9$1,681

Sat 10/1017:49 -

2 stops45h 01m

Sun 18/1011:00 -

2 stops25h 12m

Deal found 12/9$1,744

Fri 2/1023:30 -

2 stops62h 00m

Tue 13/1010:30 -

1 stop20h 57m

Deal found 10/9$1,612

Sat 31/1006:30 -

2 stops44h 20m

Wed 4/1111:40 -

2 stops46h 54m

Deal found 12/9$2,068

Tue 20/1023:30 -

2 stops38h 00m

Tue 3/1107:35 -

2 stops20h 43m

Deal found 15/9$1,621

Thu 29/1015:20 -

2 stops32h 00m

Thu 5/1122:30 -

2 stops32h 11m

Deal found 14/9$1,804

Tue 13/1005:30 -

2 stops37h 50m

Tue 20/1010:30 -

2 stops40h 01m

Deal found 14/9$1,628

Fri 20/1119:10 -

2 stops23h 15m

Sun 29/1106:00 -

2 stops21h 26m

Deal found 15/9$1,849

Mon 8/217:32 -

2 stops27h 18m

Wed 10/217:10 -

2 stops42h 01m

Deal found 13/9$2,255

Thu 1/1009:46 -

2 stops28h 04m

Thu 8/1010:15 -

2 stops23h 55m

Deal found 12/9$2,122

Wed 28/1009:00 -

2 stops29h 30m

Wed 4/1111:30 -

3 stops25h 50m

Deal found 13/9$1,639

Sat 10/1019:45 -

2 stops25h 35m

Sun 18/1006:00 -

2 stops21h 31m

Deal found 12/9$1,967

Mon 15/208:45 -

2 stops28h 45m

Fri 19/211:20 -

2 stops27h 29m

Deal found 10/9$1,659

Mon 26/1010:59 -

1 stop28h 31m

Thu 19/1112:45 -

1 stop24h 39m

Deal found 12/9$1,681

Sun 1/1119:15 -

2 stops23h 50m

Sat 7/1106:00 -

2 stops22h 26m

Deal found 11/9$2,097

Wed 17/216:05 -

2 stops23h 25m

Sat 27/211:30 -

3 stops26h 01m

Deal found 13/9$1,688

Tue 9/214:45 -

1 stop20h 50m

Thu 25/221:50 -

2 stops38h 21m

Deal found 13/9$3,237

Fri 18/1219:40 -

1 stop41h 50m

Tue 5/113:35 -

2 stops24h 28m

Deal found 12/9$3,022

Mon 22/219:49 -

1 stop19h 41m

Fri 26/212:45 -

1 stop20h 42m

Deal found 13/9$1,730

Find flight deals from Portland to Australia

Round-trip from	$1,248
One-way from	$821
Popular in	December
Cheapest in	September
Average price	$1,499

Air Canada
27/10-3/11
4 total stops
45h 36m total
Portland to Australia

Search Deals

12/11-31/12
1 total stop
24h 44m total
Portland to Australia

Search Deals

Highest demand for flights based on searches. 13% potential increase in price ($374 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($105 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

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

Cheapest return flight

PortlandMelbourne

PDX Portland - MEL Melbourne

PDXMEL

Portland

Tue 13/10

23:30-08:30

2 stops39h 00m

Melbourne

Wed 31/12

00:00-06:00

Nonstop0h 00m

$850

PortlandBrisbane

PDX Portland - BNE Brisbane

PDXBNE

Portland

Fri 20/11

19:10-08:45

1 stop19h 35m

Brisbane

Wed 31/12

00:00-06:00

Nonstop0h 00m

$859

PortlandSydney

PDX Portland - SYD Sydney Kingsford Smith

PDXSYD

Portland

Sun 1/11

19:15-09:35

1 stop19h 20m

Sydney Kingsford Smith

Wed 31/12

00:00-06:00

Nonstop0h 00m

$860

PortlandSydney

PDX Portland - SYD Sydney Kingsford Smith

PDXSYD

Portland

Mon 25/1

19:10-09:35

1 stop19h 25m

Sydney Kingsford Smith

Wed 31/12

00:00-06:00

Nonstop0h 00m

$860

PortlandMelbourne

PDX Portland - AVV Melbourne Avalon

PDXAVV

Portland

Wed 20/1

07:00-20:40

2 stops42h 40m

Melbourne Avalon

Wed 31/12

00:00-06:00

Nonstop0h 00m

$891

PortlandMelbourne

PDX Portland - MEL Melbourne

PDXMEL

Portland

Wed 20/1

15:15-21:20

2 stops35h 05m

Melbourne

Wed 31/12

00:00-06:00

Nonstop0h 00m

$892

PortlandSydney

PDX Portland - SYD Sydney Kingsford Smith

PDXSYD

Portland

Sun 1/11

10:00-22:15

2 stops41h 15m

Sydney Kingsford Smith

Wed 31/12

00:00-06:00

Nonstop0h 00m

$898

PortlandBrisbane

PDX Portland - BNE Brisbane

PDXBNE

Portland

Tue 8/12

17:30-10:15

2 stops22h 45m

Brisbane

Wed 31/12

00:00-06:00

Nonstop0h 00m

$936

PortlandMelbourne

PDX Portland - MEL Melbourne

PDXMEL

Portland

Fri 25/9

08:40-07:30

2 stops29h 50m

Melbourne

Wed 31/12

00:00-06:00

Nonstop0h 00m

$985

PortlandSydney

PDX Portland - SYD Sydney Kingsford Smith

PDXSYD

Portland

Mon 25/1

14:46-06:35

3 stops44h 49m

Sydney Kingsford Smith

Wed 31/12

00:00-06:00

Nonstop0h 00m

$1,007

Flights are sorted by cheapest return flights first.

Deals found on 11/9

Showing 1-10 of 60 resultsSorted by cheapest first

...

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.

PDX-MEL

PDX-BNE

PDX-AVV

PDX-OOL

PDX-TSV

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

PDX-AU0

PDX-MEL

PDX-BNE

PDX-AVV

PDX-OOL

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

Currently, June is the cheapest month in which you can book a flight from Portland to Australia (average of $1,502). Flying from Portland to Australia in December is currently the most expensive (average of $2,447). 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.

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

Booking 54 days in advance of your planned departure date is, on average, the best time to get cheap flights from Portland to Australia. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing Australia

Check out reviews from past customers who have flown with Qantas Airways,United Airlines, andAir Canada 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.

Qantas Airways

7.5

Good

1,098 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Robyn,Aug 2026

LAX - SYD

I was flabbergasted when the crew completely missed me in the distribution of food and drinks in Business Class - even after they looked twice at my opened table. However - this has happened to me on my last longhaul QF flight and with the same hosty (older woman with curly bob). She obviously cannot handly the stress of initial boarding as both times she has come back to me with an apology. When compared to our usual Business/ First longhauls with Qatar or Emirates, Qantas leave ALOT to be desired. I would highly recommend going with another airline. BTW I'm a 4th gen Aussie and previous Qantas employee - I would love to love them if they provided service but they just dont.

Qantas Airways

7.5

Good

1,098 reviews

Qantas Airways

7.5

Good

1,098 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Robyn,Aug 2026

LAX - SYD

United Airlines

7.4

Good

10,209 reviews

Qantas Airways

7.5

Good

1,098 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Robyn,Aug 2026

LAX - SYD

Air Canada

7.1

Good

11,630 reviews

Qantas Airways

7.5

Good

1,098 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Robyn,Aug 2026

LAX - SYD

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 19h 50m. Portland and Australia are separated by a distance of 13053 km. This flight may include one or multiple stops.
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 - Brisbane, 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, June is the cheapest month in which you can book a flight from Portland to Australia (average of $1,502). Flying from Portland to Australia in December is currently the most expensive (average of $2,447). 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

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Alternative routes for Portland to Australia

Portland to Sydney flights

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Boise to Sydney flights

Portland to Brisbane flights

Eugene to Sydney flights

Portland to Perth flights

Portland to Coolangatta flights

Top 3 airlines flying from Portland to Australia

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$718	Average$2,062	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Air Canada	Cheapest$1,243	Average$1,243	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Qantas Airways	Cheapest$1,245	Average$1,806	FlexibilityNo cancel fee	On-time74%	Search Qantas Airways 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.

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Cheap flights from Portland to Australia from $821

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap 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 15 September 2026.

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 15 September 2026.

Best flights from Portland to AustraliaDiscover 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 15 September 2026.

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 15 September 2026.

Last-minute flights from Portland to AustraliaDiscover last-minute flight deals from Portland to Australia. Data last updated 15 September 2026 and is based on user searches.

Discover last-minute flight deals from Portland to Australia. Data last updated 15 September 2026 and is based on user searches.

One-way flights from Portland to AustraliaSearch for one-way flight options from Portland to Australia. Find affordable one-way fares based on user searches. Data last updated 15 September 2026.

Search for one-way flight options from Portland to Australia. Find affordable one-way fares based on user searches. Data last updated 15 September 2026.

Find flight deals from Portland to Australia

Round-trip from

One-way from

Popular in

Cheapest in

Average price

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

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

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

Booking 54 days in advance of your planned departure date is, on average, the best time to get cheap flights from Portland to Australia. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing Australia

Check out reviews from past customers who have flown with Qantas Airways,United Airlines, andAir Canada 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

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

How long is the flight from Portland to Australia?

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.

Complete your trip

Complete your trip to Australia by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to

Book a non-stop flight to one of these other cities located in .

Search flights from Portland to Australia by cabin class

Find flights from Portland to Australia, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Portland and Australia flights

Browse other Portland and Australia flight options. Last updated on 15 September 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Fly to Australia regions

Consider these flights travelling to Australia regions.

Top 3 airlines flying from Portland to Australia

Fly with Cheapflights

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?

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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 15 September 2026.

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 15 September 2026.

Last-minute flights from Portland to Australia
Discover last-minute flight deals from Portland to Australia. Data last updated 15 September 2026 and is based on user searches.

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 15 September 2026.