How long is the flight from Portland to Australia?

Departing from Portland to Australia will take you 23h 54m. 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, Air Canada and Qantas Airways 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.

$745+ 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 2 September 2026.

Mon 12/1019:45 -

2 stops22h 35m

Mon 19/1006:15 -

2 stops21h 16m

Deal found 30/8$1,252

Tue 20/1010:10 -

1 stop27h 55m

Tue 3/1110:45 -

1 stop16h 41m

Deal found 1/9$1,287

Mon 2/1119:10 -

1 stop19h 35m

Mon 16/1110:45 -

1 stop25h 46m

Deal found 31/8$1,288

Mon 7/915:30 -

1 stop22h 35m

Thu 10/910:15 -

1 stop21h 31m

Deal found 31/8$1,301

Tue 10/1115:15 -

2 stops30h 15m

Sat 14/1119:35 -

2 stops31h 51m

Deal found 30/8$1,311

Mon 2/1119:10 -

1 stop19h 35m

Mon 16/1106:10 -

2 stops21h 16m

Deal found 31/8$1,316

Mon 12/1015:30 -

2 stops29h 50m

Mon 19/1020:55 -

2 stops30h 36m

Deal found 31/8$1,333

Sun 18/1019:45 -

2 stops22h 25m

Wed 11/1108:10 -

2 stops20h 16m

Deal found 31/8$1,337

Sat 24/1015:30 -

1 stop23h 15m

Sun 15/1110:45 -

1 stop25h 46m

Deal found 30/8$1,340

Wed 4/1119:10 -

2 stops24h 25m

Wed 11/1108:10 -

2 stops20h 16m

Deal found 31/8$1,343

Sun 11/1010:10 -

1 stop27h 55m

Sun 18/1005:00 -

2 stops26h 46m

Deal found 31/8$1,347

Sun 1/1119:10 -

2 stops23h 40m

Mon 9/1106:05 -

2 stops22h 21m

Deal found 30/8$1,349

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 2 September 2026.

Mon 12/1015:30 -

2 stops29h 50m

Mon 19/1020:55 -

2 stops30h 36m

Deal found 31/8$1,333

Sat 23/105:15 -

2 stops32h 15m

Sun 23/510:30 -

2 stops29h 08m

Deal found 29/8$1,561

Sun 1/1113:06 -

1 stop23h 54m

Mon 9/1110:10 -

1 stop27h 46m

Deal found 29/8$1,621

Mon 21/906:20 -

2 stops42h 10m

Tue 20/1022:10 -

2 stops41h 52m

Deal found 1/9$1,965

Sat 31/1010:48 -

2 stops40h 02m

Wed 4/1117:10 -

2 stops38h 40m

Deal found 28/8$2,049

Mon 2/1107:00 -

2 stops40h 55m

Fri 6/1122:30 -

2 stops32h 11m

Deal found 31/8$2,119

Fri 30/1019:26 -

1 stop18h 04m

Mon 16/1111:20 -

1 stop25h 04m

Deal found 29/8$1,578

Sun 18/1010:54 -

1 stop27h 56m

Wed 11/1110:10 -

1 stop20h 58m

Deal found 30/8$1,621

Sat 21/1110:00 -

1 stop28h 35m

Sun 29/1106:20 -

2 stops22h 06m

Deal found 2/9$1,629

Thu 5/1109:00 -

2 stops28h 30m

Mon 16/1111:20 -

1 stop16h 58m

Deal found 29/8$1,583

Sun 7/206:00 -

2 stops31h 00m

Wed 17/210:10 -

1 stop21h 08m

Deal found 28/8$1,628

Mon 16/1113:20 -

3 stops53h 15m

Mon 7/1220:10 -

3 stops55h 30m

Deal found 1/9$3,719

Sat 17/1023:30 -

2 stops38h 00m

Sat 31/1010:20 -

2 stops24h 49m

Deal found 31/8$1,583

Wed 30/905:30 -

2 stops33h 20m

Sat 6/310:10 -

1 stop21h 08m

Deal found 2/9$1,656

Tue 22/918:50 -

2 stops23h 05m

Tue 20/1016:35 -

2 stops21h 15m

Deal found 1/9$1,848

Sun 18/1015:23 -

1 stop23h 52m

Wed 11/1112:45 -

1 stop18h 36m

Deal found 30/8$1,628

Mon 26/1013:06 -

1 stop23h 54m

Thu 19/1110:10 -

1 stop18h 49m

Deal found 30/8$1,670

Mon 8/217:32 -

2 stops27h 18m

Wed 10/217:10 -

2 stops38h 16m

Deal found 31/8$2,246

Tue 13/1014:53 -

3 stops47h 42m

Tue 20/1010:25 -

2 stops36h 54m

Deal found 29/8$1,929

Sun 7/216:05 -

2 stops23h 25m

Wed 17/211:30 -

3 stops26h 01m

Deal found 28/8$1,634

Thu 4/213:05 -

3 stops46h 50m

Thu 18/216:20 -

2 stops42h 30m

Deal found 1/9$4,880

Mon 16/1108:08 -

2 stops30h 47m

Sun 6/1200:25 -

2 stops27h 57m

Deal found 1/9$1,945

Wed 4/1113:15 -

2 stops25h 15m

Wed 11/1111:30 -

3 stops25h 50m

Deal found 31/8$1,635

Mon 15/213:39 -

1 stop23h 51m

Fri 19/211:20 -

2 stops27h 29m

Deal found 31/8$1,653

Sun 8/1119:10 -

2 stops23h 55m

Sun 29/1106:00 -

2 stops22h 26m

Deal found 1/9$2,021

Sun 4/1007:03 -

2 stops32h 47m

Sun 11/1000:10 -

2 stops31h 24m

Deal found 29/8$2,075

Fri 16/1021:33 -

2 stops58h 07m

Thu 22/1000:10 -

2 stops35h 23m

Deal found 1/9$2,131

Sat 26/908:40 -

2 stops29h 20m

Sat 3/1010:20 -

2 stops24h 26m

Deal found 29/8$1,977

Thu 1/1008:40 -

2 stops29h 20m

Thu 8/1010:30 -

3 stops26h 01m

Deal found 30/8$1,977

Sat 31/1010:30 -

2 stops53h 15m

Wed 4/1110:20 -

2 stops29h 27m

Deal found 1/9$4,180

Find flight deals from Portland to Australia

Round-trip from	$1,252
One-way from	$745
Popular in	December
Cheapest in	September
Average price	$1,495

Air Canada
12/10-19/10
4 total stops
43h 51m total
Portland to Australia

Search Deals

American Airlines
26/10
1 total stop
25h 32m total
Portland to Australia

Search Deals

Highest demand for flights based on searches. 13% potential increase in price ($391 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($104 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PortlandMelbourne

PDX Portland - AVV Melbourne Avalon

PDXAVV

Portland

Mon 12/10

15:30-15:20

2 stops29h 50m

Melbourne Avalon

Mon 19/10

20:55-09:31

2 stops30h 36m

$1,333

PortlandBrisbane

PDX Portland - BNE Brisbane

PDXBNE

Portland

Sat 23/1

05:15-07:30

2 stops32h 15m

Brisbane

Sun 23/5

10:30-22:38

2 stops29h 08m

$1,561

PortlandBrisbane

PDX Portland - BNE Brisbane

PDXBNE

Portland

Fri 30/10

19:26-06:30

1 stop18h 04m

Brisbane

Mon 16/11

11:20-18:24

1 stop25h 04m

$1,578

PortlandBrisbane

PDX Portland - BNE Brisbane

PDXBNE

Portland

Thu 5/11

09:00-07:30

2 stops28h 30m

Brisbane

Mon 16/11

11:20-10:18

1 stop16h 58m

$1,583

PortlandBrisbane

PDX Portland - BNE Brisbane

PDXBNE

Portland

Sat 17/10

23:30-06:30

2 stops38h 00m

Brisbane

Sat 31/10

10:20-18:09

2 stops24h 49m

$1,583

PortlandMelbourne

PDX Portland - MEL Melbourne

PDXMEL

Portland

Sun 1/11

13:06-08:00

1 stop23h 54m

Melbourne

Mon 9/11

10:10-18:56

1 stop27h 46m

$1,621

PortlandMelbourne

PDX Portland - MEL Melbourne

PDXMEL

Portland

Sun 18/10

10:54-08:50

1 stop27h 56m

Melbourne

Wed 11/11

10:10-12:08

1 stop20h 58m

$1,621

PortlandMelbourne

PDX Portland - MEL Melbourne

PDXMEL

Portland

Sun 7/2

06:00-08:00

2 stops31h 00m

Melbourne

Wed 17/2

10:10-12:18

1 stop21h 08m

$1,628

Fastest return journey

PortlandMelbourne

PDX Portland - MEL Melbourne

PDXMEL

Portland

Sun 18/10

15:23-09:15

1 stop23h 52m

Melbourne

Wed 11/11

12:45-12:21

1 stop18h 36m

$1,628

PortlandSydney

PDX Portland - SYD Sydney Kingsford Smith

PDXSYD

Portland

Sat 21/11

10:00-09:35

1 stop28h 35m

Sydney Kingsford Smith

Sun 29/11

06:20-09:26

2 stops22h 06m

$1,629

Flights are sorted by cheapest return flights first.

Deals found on 30/8

Showing 1-10 of 59 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-BNE

PDX-SYD

PDX-MEL

PDX-PER

PDX-AVV

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-BNE

PDX-SYD

PDX-MEL

PDX-PER

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 $1,498). Flying from Portland to Australia in December is currently the most expensive (average of $2,432). 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 56 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

1,088 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

1,088 reviews

Qantas Airways

7.5

Good

1,088 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Robyn,Aug 2026

LAX - SYD

United Airlines

7.4

Good

10,159 reviews

Qantas Airways

7.5

Good

1,088 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Robyn,Aug 2026

LAX - SYD

Air Canada

7.1

Good

11,573 reviews

Qantas Airways

7.5

Good

1,088 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 23h 54m. 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 $1,498). Flying from Portland to Australia in December is currently the most expensive (average of $2,432). 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

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Boise to Sydney flights

Portland to Brisbane flights

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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$716	Average$2,057	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Air Canada	Cheapest$1,240	Average$1,240	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Qantas Airways	Cheapest$1,242	Average$1,801	FlexibilityNo cancel fee	On-time74%	Search Qantas Airways flights

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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 $745

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 26/10. 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 2 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 2 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 2 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 2 September 2026.

Last-minute flights from Portland to AustraliaDiscover last-minute flight deals from Portland to Australia. Data last updated 2 September 2026 and is based on user searches.

Discover last-minute flight deals from Portland to Australia. Data last updated 2 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 2 September 2026.

Search for one-way flight options from Portland to Australia. Find affordable one-way fares based on user searches. Data last updated 2 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 56 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 2 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 2 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 2 September 2026.

Last-minute flights from Portland to Australia
Discover last-minute flight deals from Portland to Australia. Data last updated 2 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 2 September 2026.