How long is the flight from Portland to Australia?

Departing from Portland to Australia will take you 22h 30m. Portland and Australia are separated by a distance of 12350 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.

$759+ 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 30 October 2026.

Mon 26/1010:05 -

1 stop28h 30m

Sun 8/1106:20 -

2 stops22h 06m

Deal found 25/10$1,402

Sat 14/1115:15 -

1 stop23h 20m

Thu 26/1111:20 -

1 stop17h 06m

Deal found 25/10$1,496

Mon 26/1007:05 -

1 stop31h 30m

Sun 8/1111:20 -

1 stop28h 26m

Deal found 25/10$1,520

Sat 14/1119:10 -

1 stop19h 25m

Tue 24/1111:20 -

1 stop22h 21m

Deal found 26/10$1,523

Sat 14/1119:10 -

2 stops31h 05m

Tue 24/1111:20 -

1 stop17h 06m

Deal found 26/10$1,546

Thu 26/1115:15 -

1 stop23h 20m

Thu 10/1219:25 -

2 stops42h 06m

Deal found 25/10$1,571

Sun 1/1117:30 -

1 stop17h 55m

Tue 1/1211:10 -

1 stop21h 38m

Deal found 25/10$1,584

Wed 4/1118:04 -

1 stop41h 21m

Thu 12/1121:40 -

1 stop27h 25m

Deal found 29/10$1,593

Sun 1/1109:55 -

2 stops27h 05m

Tue 10/1110:10 -

1 stop18h 54m

Deal found 27/10$1,603

Wed 4/1113:15 -

2 stops25h 15m

Wed 11/1112:45 -

1 stop18h 36m

Deal found 27/10$1,610

Tue 3/1113:06 -

1 stop23h 54m

Tue 10/1110:10 -

1 stop20h 58m

Deal found 27/10$1,617

Wed 28/1019:26 -

1 stop20h 04m

Wed 4/1112:45 -

1 stop27h 17m

Deal found 26/10$1,624

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 30 October 2026.

Mon 1/214:10 -

1 stop22h 50m

Mon 15/210:10 -

1 stop28h 18m

Deal found 25/10$1,598

Tue 23/217:50 -

1 stop30h 55m

Tue 16/321:40 -

2 stops26h 26m

Deal found 27/10$1,630

Thu 11/312:55 -

2 stops22h 30m

Sat 13/311:15 -

2 stops22h 40m

Deal found 25/10$1,655

Sat 20/208:55 -

2 stops29h 35m

Fri 12/311:30 -

3 stops26h 01m

Deal found 25/10$1,753

Mon 22/215:15 -

2 stops27h 20m

Fri 26/207:10 -

2 stops26h 31m

Deal found 29/10$1,790

Mon 15/210:00 -

1 stop27h 00m

Mon 22/210:10 -

1 stop28h 18m

Deal found 25/10$1,598

Tue 16/210:00 -

1 stop27h 00m

Mon 22/210:10 -

1 stop21h 08m

Deal found 25/10$1,598

Tue 16/213:00 -

1 stop24h 00m

Tue 23/210:10 -

2 stops25h 49m

Deal found 25/10$1,605

Thu 3/1215:44 -

1 stop23h 46m

Sun 13/1212:45 -

1 stop20h 53m

Deal found 26/10$2,057

Sun 14/217:10 -

1 stop19h 50m

Fri 26/210:10 -

1 stop21h 08m

Deal found 25/10$1,669

Sun 24/113:18 -

1 stop22h 02m

Sun 31/111:50 -

1 stop21h 46m

Deal found 29/10$2,121

Fri 19/217:40 -

1 stop20h 20m

Mon 8/311:15 -

1 stop21h 11m

Deal found 27/10$4,883

Wed 17/217:10 -

1 stop19h 50m

Fri 26/210:10 -

1 stop21h 08m

Deal found 25/10$1,669

Tue 9/213:09 -

3 stops46h 46m

Tue 9/316:20 -

3 stops48h 56m

Deal found 29/10$5,176

Mon 22/219:20 -

1 stop20h 10m

Fri 26/212:45 -

1 stop27h 16m

Deal found 29/10$2,192

Fri 19/217:10 -

1 stop19h 50m

Thu 25/210:10 -

1 stop21h 08m

Deal found 25/10$1,740

Tue 2/312:56 -

2 stops25h 09m

Wed 17/309:15 -

3 stops27h 16m

Deal found 29/10$2,192

Tue 10/1111:00 -

1 stop26h 30m

Mon 30/1110:40 -

1 stop18h 24m

Deal found 28/10$1,759

Mon 7/1213:17 -

1 stop25h 03m

Mon 14/1209:15 -

2 stops27h 52m

Deal found 28/10$2,391

Sat 9/113:18 -

1 stop25h 02m

Sat 30/111:50 -

1 stop21h 46m

Deal found 27/10$2,831

Sat 21/1105:45 -

2 stops31h 45m

Sun 29/1110:40 -

1 stop18h 24m

Deal found 30/10$2,348

Find flight deals from Portland to Australia

Round-trip from	$1,389
One-way from	$759
Popular in	December
Cheapest in	September
Average price	$1,720

Air Canada
10/2-17/2
2 total stops
49h 31m total
Portland to Australia

Search Deals

Alaska Airlines
28/3-31/12
1 total stop
25h 55m total
Portland to Australia

Search Deals

Highest demand for flights based on searches. 12% potential increase in price ($378 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($108 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PortlandSydney

PDX Portland - SYD Sydney Kingsford Smith

PDXSYD

Portland

Sun 28/3

10:30-06:25

1 stop25h 55m

Sydney Kingsford Smith

Wed 31/12

00:00-06:00

Nonstop0h 00m

$759

PortlandMelbourne

PDX Portland - MEL Melbourne

PDXMEL

Portland

Sun 22/11

10:59-10:30

1 stop28h 31m

Melbourne

Wed 31/12

00:00-06:00

Nonstop0h 00m

$838

PortlandMelbourne

PDX Portland - MEL Melbourne

PDXMEL

Portland

Sat 7/11

23:30-10:30

2 stops40h 00m

Melbourne

Wed 31/12

00:00-06:00

Nonstop0h 00m

$838

PortlandMelbourne

PDX Portland - MEL Melbourne

PDXMEL

Portland

Mon 22/2

11:40-09:30

2 stops26h 50m

Melbourne

Wed 31/12

00:00-06:00

Nonstop0h 00m

$850

Fastest return journey

PortlandMelbourne

PDX Portland - MEL Melbourne

PDXMEL

Portland

Mon 1/2

14:30-09:30

2 stops24h 00m

Melbourne

Wed 31/12

00:00-06:00

Nonstop0h 00m

$850

PortlandMelbourne

PDX Portland - MEL Melbourne

PDXMEL

Portland

Mon 1/2

18:10-20:10

3 stops55h 00m

Melbourne

Wed 31/12

00:00-06:00

Nonstop0h 00m

$864

PortlandMelbourne

PDX Portland - MEL Melbourne

PDXMEL

Portland

Thu 5/11

07:00-08:00

2 stops30h 00m

Melbourne

Wed 31/12

00:00-06:00

Nonstop0h 00m

$919

PortlandMelbourne

PDX Portland - MEL Melbourne

PDXMEL

Portland

Fri 6/11

23:30-10:30

2 stops40h 00m

Melbourne

Wed 31/12

00:00-06:00

Nonstop0h 00m

$923

PortlandSydney

PDX Portland - SYD Sydney Kingsford Smith

PDXSYD

Portland

Thu 31/12

10:30-06:25

1 stop24h 55m

Sydney Kingsford Smith

Wed 31/12

00:00-06:00

Nonstop0h 00m

$931

PortlandSydney

PDX Portland - SYD Sydney Kingsford Smith

PDXSYD

Portland

Sun 28/3

15:15-11:40

2 stops26h 25m

Sydney Kingsford Smith

Wed 31/12

00:00-06:00

Nonstop0h 00m

$955

Flights are sorted by cheapest return flights first.

Deals found on 25/10

Showing 1-10 of 33 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-SYD

PDX-MEL

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-SYD

PDX-MEL

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 $1,506). Flying from Portland to Australia in December is currently the most expensive (average of $2,513). 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 50 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

1,121 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Jodie,Oct 2026

SYD - GFF

Pretty good but it was delayed by almost an hour

Qantas Airways

7.5

Good

1,121 reviews

Qantas Airways

7.5

Good

1,121 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Jodie,Oct 2026

SYD - GFF

Pretty good but it was delayed by almost an hour

United Airlines

7.3

Good

10,451 reviews

Qantas Airways

7.5

Good

1,121 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Jodie,Oct 2026

SYD - GFF

Pretty good but it was delayed by almost an hour

Air Canada

7.1

Good

11,833 reviews

Qantas Airways

7.5

Good

1,121 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Jodie,Oct 2026

SYD - GFF

Pretty good but it was delayed by almost an hour

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 30m. Portland and Australia are separated by a distance of 12350 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 $1,506). Flying from Portland to Australia in December is currently the most expensive (average of $2,513). 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

Portland to Melbourne flights

Portland to Brisbane flights

Portland to Perth flights

Boise to Sydney flights

Eugene to Sydney flights

Portland to Coolangatta flights

Top 3 airlines flying from Portland to Australia

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	Cheapest$1,261	Average$1,261	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Qantas Airways	Cheapest$1,263	Average$3,055	FlexibilityNo cancel fee	On-time74%	Search Qantas Airways flights
United Airlines	Cheapest$2,392	Average$2,614	FlexibilityNo cancel fee	On-time69%	Search United Airlines 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 $759

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 28/3. 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 30 October 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 30 October 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 30 October 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 30 October 2026.

Last-minute flights from Portland to AustraliaDiscover last-minute flight deals from Portland to Australia. Data last updated 30 October 2026 and is based on user searches.

Discover last-minute flight deals from Portland to Australia. Data last updated 30 October 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 30 October 2026.

Search for one-way flight options from Portland to Australia. Find affordable one-way fares based on user searches. Data last updated 30 October 2026.

Find flight deals from Portland to Australia

Round-trip from

One-way from

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Cheapest in

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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 50 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 30 October 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 30 October 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 30 October 2026.

Last-minute flights from Portland to Australia
Discover last-minute flight deals from Portland to Australia. Data last updated 30 October 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 30 October 2026.