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

To fly one-way, consider booking your trip with Alaska Airlines, which is currently one of the cheapest options available, starting at $696. American Airlines flights start at $697 while deals on United Airlines start at $705 one-way.

What are the most popular routes from Portland to Australia?

The most popular flight routes from Portland to Australia are Portland - Sydney Kingsford Smith, Portland - Melbourne and Portland - Brisbane.

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

When booking a flight from Portland to Australia, you may want to consider flying on American Airlines, Air Canada or Alaska Airlines as they are the most popular for this route.

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

To save up to 40% on this flight, we recommend booking at least 24 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Portland to Australia from $909 1-2 weeks out and tickets from $1,171 for flights departing within the next 72 hours.

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

February can be a great time to fly to Australia from Portland with a flight ticket averaging about $1,177. Cheapflights users have found deals in the month of February for as cheap as $885. The most expensive prices can be found in the month of December.

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

For a flight from Portland to Australia, you will be flying from Portland. Portland (PDX) is just 6.0 mi from the center of the city.

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 vacation 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.

$1,359+ Flights from Portland to Australia - Compare & Save Big

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Cheap flight deals from Portland to Australia

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$1,019 (Kiwi.com)
One-way from	$628 (Kiwi.com)
Popular in	December
Cheapest in	February
Average price	$1,219

Provider with most accurate pricing for Portland-Sydney Kingsford Smith flight deals.

Search Deals

Provider most trusted by Cheapflights users for Portland-Sydney Kingsford Smith flights.

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From Portland to Australia

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One-way flight from Portland to Australia

Search Deals

Highest demand for flights based on searches. 12% potential increase in price ($175 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($37 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

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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 avril 25, 2025.

jeu. 8/147:00 amPDX - SYD

2 stops38h 40mMultiple Airlines

ven. 8/294:20 pmSYD - PDX

1 stop23h 20mMultiple Airlines

Deal found 4/25

$1,019

jeu. 8/147:00 amPDX - SYD

2 stops19h 45mAlaska Airlines

ven. 8/299:40 pmSYD - PDX

2 stops19h 19mAlaska Airlines

Deal found 4/25

$1,140

ven. 8/297:35 amPDX - SYD

1 stop19h 10mHawaiian Airlines

ven. 9/129:40 pmSYD - PDX

1 stop18h 00mHawaiian Airlines

Deal found 4/25

$1,152

lun. 10/133:25 pmPDX - SYD

1 stop22h 55mAir Canada

lun. 10/2010:20 amSYD - PDX

1 stop30h 36mAir Canada

Deal found 4/25

$1,154

mer. 10/157:40 pmPDX - MEL

2 stops22h 30mMultiple Airlines

dim. 10/267:10 amMEL - PDX

2 stops20h 24mMultiple Airlines

Deal found 4/25

$1,178

mer. 10/153:25 pmPDX - MEL

2 stops26h 40mAir Canada

dim. 10/267:10 amMEL - PDX

2 stops20h 24mAir Canada

Deal found 4/24

$1,180

dim. 8/179:59 amPDX - SYD

2 stops29h 46mAir New Zealand

sam. 8/306:20 pmSYD - PDX

2 stops43h 17mAir New Zealand

Deal found 4/24

$1,190

mar. 7/85:55 pmPDX - BNE

2 stops23h 25mMultiple Airlines

mar. 7/2211:40 amBNE - PDX

2 stops23h 46mMultiple Airlines

Deal found 4/25

$1,227

dim. 6/153:42 pmPDX - MEL

1 stop23h 33mUnited Airlines

dim. 6/2910:55 amMEL - PDX

1 stop39h 02mUnited Airlines

Deal found 4/25

$1,232

dim. 8/37:45 amPDX - MEL

1 stop30h 00mQantas Airways

dim. 8/109:45 amMEL - PDX

1 stop28h 19mQantas Airways

Deal found 4/24

$1,248

lun. 10/1311:00 amPDX - BNE

1 stop26h 30mUnited Airlines

mer. 10/2210:30 amBNE - PDX

1 stop19h 13mUnited Airlines

Deal found 4/25

$1,255

sam. 11/157:05 pmPDX - MEL

2 stops44h 45mAir New Zealand

sam. 11/2912:05 pmMEL - PDX

2 stops30h 09mAir New Zealand

Deal found 4/24

$1,271

Best flights from Portland to Australia
Discover carefully curated flight deals from Portland to Australia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated avril 25, 2025.

jeu. 8/147:00 amPDX - SYD

2 stops38h 40mMultiple Airlines

ven. 8/294:20 pmSYD - PDX

1 stop23h 20mMultiple Airlines

Deal found 4/25

$1,019

jeu. 8/147:00 amPDX - SYD

2 stops19h 45mAlaska Airlines

ven. 8/299:40 pmSYD - PDX

2 stops19h 19mAlaska Airlines

Deal found 4/25

$1,140

ven. 8/297:35 amPDX - SYD

1 stop19h 10mHawaiian Airlines

ven. 9/129:40 pmSYD - PDX

1 stop18h 00mHawaiian Airlines

Deal found 4/25

$1,152

lun. 10/133:25 pmPDX - SYD

1 stop22h 55mAir Canada

lun. 10/2010:20 amSYD - PDX

1 stop30h 36mAir Canada

Deal found 4/25

$1,154

dim. 8/179:59 amPDX - SYD

2 stops29h 46mAir New Zealand

sam. 8/306:20 pmSYD - PDX

2 stops43h 17mAir New Zealand

Deal found 4/24

$1,190

dim. 6/153:42 pmPDX - MEL

1 stop23h 33mUnited Airlines

dim. 6/2910:55 amMEL - PDX

1 stop39h 02mUnited Airlines

Deal found 4/25

$1,232

dim. 8/37:45 amPDX - MEL

1 stop30h 00mQantas Airways

dim. 8/109:45 amMEL - PDX

1 stop28h 19mQantas Airways

Deal found 4/24

$1,248

jeu. 8/282:30 pmPDX - SYD

2 stops23h 35mAmerican Airlines

dim. 9/79:10 amSYD - PDX

1 stop20h 35mAmerican Airlines

Deal found 4/25

$1,297

dim. 6/157:15 amPDX - SYD

2 stops30h 20mDelta

lun. 6/309:25 amSYD - PDX

2 stops29h 56mDelta

Deal found 4/24

$1,371

mar. 10/146:00 amPDX - BNE

2 stops36h 05mCathay Pacific

lun. 11/312:10 amBNE - PDX

2 stops34h 18mCathay Pacific

Deal found 4/25

$1,377

mar. 5/205:55 pmPDX - BNE

2 stops23h 30mFiji Airways

mar. 6/1011:40 amBNE - PDX

2 stops26h 03mFiji Airways

Deal found 4/25

$1,438

lun. 10/137:30 amPDX - BNE

3 stops40h 15mSingapore Airlines

mer. 10/2211:50 pmBNE - PDX

2 stops33h 38mSingapore Airlines

Deal found 4/25

$1,997

Last-minute flights from Portland to Australia
Discover last-minute flight deals from Portland to Australia. Data last updated avril 25, 2025 and is based on user searches.

lun. 4/283:25 pmPDX - BNE

2 stops26h 35mAir New Zealand

mer. 4/307:45 pmBNE - PDX

2 stops33h 54mAir New Zealand

Deal found 4/25

$2,016

mar. 4/295:50 pmPDX - SYD

1 stop19h 15mQantas Airways

mer. 6/49:10 amSYD - PDX

1 stop21h 37mQantas Airways

Deal found 4/25

$1,536

sam. 5/38:05 amPDX - SYD

1 stop18h 40mHawaiian Airlines

sam. 5/179:40 pmSYD - PDX

2 stops28h 12mHawaiian Airlines

Deal found 4/25

$1,236

sam. 5/35:50 pmPDX - SYD

2 stops35h 20mMultiple Airlines

sam. 5/171:45 pmSYD - PDX

2 stops24h 03mMultiple Airlines

Deal found 4/25

$1,389

mer. 5/77:40 amPDX - MEL

2 stops34h 35mCathay Pacific

dim. 5/1811:45 pmMEL - PDX

2 stops38h 03mCathay Pacific

Deal found 4/24

$1,528

mer. 5/71:45 pmPDX - MEL

1 stop25h 30mUnited Airlines

dim. 5/1810:55 amMEL - PDX

1 stop24h 22mUnited Airlines

Deal found 4/24

$1,892

sam. 5/108:05 amPDX - BNE

2 stops30h 25mHawaiian Airlines

sam. 5/315:05 pmBNE - PDX

2 stops30h 15mHawaiian Airlines

Deal found 4/25

$1,364

sam. 5/1010:21 amPDX - BNE

2 stops42h 59mEmirates

ven. 5/301:55 amBNE - PDX

2 stops57h 40mEmirates

Deal found 4/25

$3,659

mar. 5/205:55 pmPDX - BNE

2 stops23h 30mFiji Airways

mar. 6/1011:40 amBNE - PDX

2 stops26h 03mFiji Airways

Deal found 4/25

$1,438

mar. 5/202:52 pmPDX - BNE

2 stops26h 33mMultiple Airlines

mar. 5/2711:40 amBNE - PDX

2 stops26h 03mMultiple Airlines

Deal found 4/25

$1,476

mar. 5/207:40 pmPDX - BNE

2 stops23h 20mAir Canada

mar. 6/1010:20 amBNE - PDX

1 stop16h 00mAir Canada

Deal found 4/25

$1,496

mar. 5/2010:30 amPDX - BNE

1 stop25h 55mQantas Airways

mar. 6/108:05 pmBNE - PDX

1 stop19h 25mQantas Airways

Deal found 4/25

$1,535

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 avril 25, 2025.

sam. 7/57:00 amPDX - PER

3 stops55h 50mMultiple Airlines

Deal found 4/24

$628

jeu. 7/32:30 pmPDX - SYD

2 stops31h 10mMultiple Airlines

Deal found 4/24

$632

jeu. 5/110:00 pmPDX - SYD

2 stops28h 45mAlaska Airlines

Deal found 4/25

$696

mer. 7/23:00 pmPDX - SYD

1 stop23h 05mAmerican Airlines

Deal found 4/24

$697

mar. 7/112:55 pmPDX - SYD

2 stops25h 05mUnited Airlines

Deal found 4/24

$705

dim. 6/291:28 pmPDX - SYD

2 stops24h 07mDelta

Deal found 4/24

$718

ven. 7/45:35 pmPDX - SYD

1 stop33h 10mHawaiian Airlines

Deal found 4/24

$719

dim. 6/299:53 amPDX - MEL

1 stop29h 22mUnited Airlines

Deal found 4/24

$744

dim. 6/297:55 amPDX - MEL

1 stop29h 50mQantas Airways

Deal found 4/24

$758

ven. 6/272:30 pmPDX - AVV

3 stops50h 15mMultiple Airlines

Deal found 4/24

$848

ven. 6/2712:59 amPDX - MEL

2 stops36h 46mAmerican Airlines

Deal found 4/24

$853

sam. 6/289:40 pmPDX - MEL

3 stops27h 35mMultiple Airlines

Deal found 4/24

$915

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

jeu. 8/14

7:00 am-2:40 pm

2 stops38h 40m

Sydney Kingsford Smith

ven. 8/29

4:20 pm-10:40 pm

1 stop23h 20m

$1,019

PortlandSydney

PDX - SYD

PDXSYD

Portland

jeu. 8/14

7:00 am-7:45 pm

2 stops19h 45m

Sydney Kingsford Smith

ven. 8/29

9:40 pm-11:59 pm

2 stops19h 19m

$1,140

PortlandSydney

PDX - SYD

PDXSYD

Portland

ven. 8/29

7:35 am-7:45 pm

1 stop19h 10m

Sydney Kingsford Smith

ven. 9/12

9:40 pm-10:40 pm

1 stop18h 00m

$1,152

PortlandSydney

PDX - SYD

PDXSYD

Portland

lun. 10/13

3:25 pm-8:20 am

1 stop22h 55m

Sydney Kingsford Smith

lun. 10/20

10:20 am-10:56 pm

1 stop30h 36m

$1,154

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

mer. 10/15

7:40 pm-12:10 pm

2 stops22h 30m

Melbourne

dim. 10/26

7:10 am-9:34 am

2 stops20h 24m

$1,178

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

mer. 10/15

3:25 pm-12:05 pm

2 stops26h 40m

Melbourne

dim. 10/26

7:10 am-9:34 am

2 stops20h 24m

$1,180

PortlandSydney

PDX - SYD

PDXSYD

Portland

dim. 8/17

9:59 am-8:45 am

2 stops29h 46m

Sydney Kingsford Smith

sam. 8/30

6:20 pm-8:37 pm

2 stops43h 17m

$1,190

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

mar. 7/8

5:55 pm-10:20 am

2 stops23h 25m

Brisbane

mar. 7/22

11:40 am-6:26 pm

2 stops23h 46m

$1,227

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

dim. 6/15

3:42 pm-8:15 am

1 stop23h 33m

Melbourne

dim. 6/29

10:55 am-8:57 am

1 stop39h 02m

$1,232

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

dim. 8/3

7:45 am-6:45 am

1 stop30h 00m

Melbourne

dim. 8/10

9:45 am-9:04 pm

1 stop28h 19m

$1,248

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/24

Showing 1-10 of 52 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 round-trip 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, February is the cheapest month in which you can book a flight from Portland to Australia (average of $1,046). Flying from Portland to Australia in December is currently the most expensive (average of $1,643). 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?

When flying from Portland to Australia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Australia by month

In terms of precipitation, rainfall in Australia ranges from 2.0 - 5.1 inches per month. March is typically the wettest month, when rainfall can reach 5.1 in. September is typically the driest time to visit Australia when rainfall is around 2.0 in.

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 71.6 F. Travelers looking to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing Australia

See what other customers who have flown with Air Tahiti Nui, Fiji Airways and Singapore Airlines from Portland to Australia have to say. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Air Tahiti Nui

8.8

Very good

62 reviews

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

8.8

Very good

62 reviews

Air Tahiti Nui

8.8

Very good

62 reviews

Reviews

1 / 2

10.0

Excellent

Isabelle,Apr 2023

AKL - PPT

Fiji Airways

8.1

Very good

188 reviews

Air Tahiti Nui

8.8

Very good

62 reviews

Reviews

1 / 2

10.0

Excellent

Isabelle,Apr 2023

AKL - PPT

Singapore Airlines

8.1

Very good

1,290 reviews

Air Tahiti Nui

8.8

Very good

62 reviews

Reviews

1 / 2

10.0

Excellent

Isabelle,Apr 2023

AKL - PPT

Emirates

8.0

Very good

3,211 reviews

Air Tahiti Nui

8.8

Very good

62 reviews

Reviews

1 / 2

10.0

Excellent

Isabelle,Apr 2023

AKL - PPT

Delta

8.0

Very good

7,920 reviews

Air Tahiti Nui

8.8

Very good

62 reviews

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?
For a flight from Portland to Australia, you will be flying from Portland. Portland (PDX) is just 6.0 mi from the center of the city.
What are the cheapest airlines to fly from Portland to Australia one-way?
To fly one-way, consider booking your trip with Alaska Airlines, which is currently one of the cheapest options available, starting at $696. American Airlines flights start at $697 while deals on United Airlines start at $705 one-way.
What are the most popular routes from Portland to Australia?
The most popular flight routes from Portland to Australia are Portland - Sydney Kingsford Smith, Portland - Melbourne and Portland - Brisbane.
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 vacation 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, February is the cheapest month in which you can book a flight from Portland to Australia (average of $1,046). Flying from Portland to Australia in December is currently the most expensive (average of $1,643). 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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Complete your trip

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Top 9 airlines flying from Portland to Australia

Airline	Cheapest	Average	Flexibility	On-time
Hawaiian Airlines	Cheapest$444	Average$1,277	FlexibilityNo cancel fee	On-time85%
Delta	Cheapest$456	Average$1,242	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$759	Average$1,353	FlexibilityNo cancel fee	On-time69%
Air Canada	Cheapest$848	Average$1,266	FlexibilityNo cancel fee	On-time67%
Qantas Airways	Cheapest$1,036	Average$1,430	FlexibilityNo cancel fee	On-time74%
American Airlines	Cheapest$1,055	Average$1,142	FlexibilityNo cancel fee	On-time71%
Alaska Airlines	Cheapest$1,068	Average$1,252	FlexibilityNo cancel fee	On-time75%
Singapore Airlines	Cheapest$1,275	Average$1,502	FlexibilityNo cancel fee	On-time81%
Qatar Airways	Cheapest$1,286	Average$1,360	FlexibilityNo cancel fee	On-time68%

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$628+ Cheap flights from Portland (PDX) to Australia

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 7/5. Fares are subject to change and may not be available on all flights or dates of travel.

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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 avril 25, 2025.

Most accurate provider

Most trusted provider

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 avril 25, 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 avril 25, 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 avril 25, 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

See what other customers who have flown with Air Tahiti Nui, Fiji Airways and Singapore Airlines from Portland to Australia have to say. 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?

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

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Alternative routes for Portland to Australia

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

Top 9 airlines flying from Portland to Australia

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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 avril 25, 2025.