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$497+ 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 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SYD
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
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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 August 20, 2025.

Round-trip from

$908
(Air Canada)

One-way from

$497
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$1,082
From Portland to Australia
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One-way flight from Portland to Australia
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($121 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in August 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 August 20, 2025.

This Air Canada deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/210:00 amPDX - SYD
1 stop28h 20mAir Canada
Tue 9/239:20 amSYD - PDX
1 stop30h 41mAir Canada
Deal found 8/19$908
This FlightHub deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/13:25 pmPDX - SYD
1 stop22h 55mAir Canada
Wed 9/109:20 amSYD - PDX
1 stop26h 26mAir Canada
Deal found 8/19$919
This Air Canada deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/23:25 pmPDX - SYD
2 stops27h 15mAir Canada
Wed 9/109:20 amSYD - PDX
1 stop22h 26mAir Canada
Deal found 8/19$927
This Air Canada deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/163:25 pmPDX - MEL
2 stops26h 40mAir Canada
Tue 9/236:00 amMEL - PDX
2 stops29h 46mAir Canada
Deal found 8/19$943
This Air Canada deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/210:00 amPDX - MEL
2 stops32h 05mAir Canada
Wed 9/106:00 amMEL - PDX
2 stops25h 46mAir Canada
Deal found 8/19$947
This Air Canada deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2810:05 amPDX - SYD
1 stop28h 15mAir Canada
Sun 9/79:20 amSYD - PDX
1 stop22h 26mAir Canada
Deal found 8/19$953
This Trip.com deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/225:40 pmPDX - BNE
1 stop19h 50mUnited Airlines
Fri 9/510:30 amBNE - PDX
1 stop29h 07mUnited Airlines
Deal found 8/20$957
This FlightHub deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/23:25 pmPDX - MEL
2 stops27h 10mAir Canada
Tue 9/96:00 amMEL - PDX
2 stops25h 46mAir Canada
Deal found 8/19$958
This FlightHub deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/17:40 pmPDX - SYD
1 stop18h 40mAir Canada
Thu 9/119:20 amSYD - PDX
1 stop17h 01mAir Canada
Deal found 8/19$964
This American Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/108:31 amPDX - SYD
1 stop29h 34mAmerican Airlines
Mon 9/159:10 amSYD - PDX
1 stop22h 13mAmerican Airlines
Deal found 8/18$969
This Trip.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/295:41 pmPDX - MEL
2 stops25h 19mMultiple Airlines
Wed 11/52:15 pmMEL - PDX
2 stops25h 35mMultiple Airlines
Deal found 8/18$970
This American Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/238:31 amPDX - SYD
1 stop29h 34mAmerican Airlines
Tue 9/3012:10 pmSYD - PDX
1 stop21h 54mAmerican Airlines
Deal found 8/18$970

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to Australia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 20, 2025.
Use the filters below to find and compare flights from Portland to Australia that are best for you.

Fly from

Portland

Fly to

Australia

Route

Depart

Return

Price

PortlandSydney

PDX - SYD

PDXSYD

Portland

Tue 9/23

7:40 pm-7:20 am

1 stop18h 40m

Sydney Kingsford Smith

Tue 9/30

9:20 am-6:46 pm

1 stop26h 26m

$908

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sun 9/21

3:25 pm-7:20 am

1 stop22h 55m

Sydney Kingsford Smith

Tue 9/30

9:20 am-6:46 pm

1 stop26h 26m

$908

PortlandSydney

PDX - SYD

PDXSYD

Portland

Tue 9/2

3:25 pm-7:20 am

1 stop22h 55m

Sydney Kingsford Smith

Wed 9/10

9:20 am-2:46 pm

1 stop22h 26m

$908

PortlandSydney

PDX - SYD

PDXSYD

Portland

Tue 9/2

10:00 am-7:20 am

1 stop28h 20m

Sydney Kingsford Smith

Tue 9/23

9:20 am-11:01 pm

1 stop30h 41m

$908

PortlandSydney

PDX - SYD

PDXSYD

Portland

Mon 9/1

3:25 pm-7:20 am

1 stop22h 55m

Sydney Kingsford Smith

Wed 9/10

9:20 am-6:46 pm

1 stop26h 26m

$919

PortlandSydney

PDX - SYD

PDXSYD

Portland

Wed 9/3

3:25 pm-7:20 am

1 stop22h 55m

Sydney Kingsford Smith

Wed 9/10

9:20 am-9:21 am

1 stop17h 01m

$919

PortlandSydney

PDX - SYD

PDXSYD

Portland

Wed 9/3

3:25 pm-7:20 am

1 stop22h 55m

Sydney Kingsford Smith

Tue 9/9

9:20 am-2:46 pm

1 stop22h 26m

$919

PortlandSydney

PDX - SYD

PDXSYD

Portland

Tue 9/2

6:15 am-7:20 am

1 stop32h 05m

Sydney Kingsford Smith

Tue 9/9

9:20 am-9:21 am

1 stop17h 01m

$919

PortlandSydney

PDX - SYD

PDXSYD

Portland

Mon 9/1

7:40 pm-7:20 am

1 stop18h 40m

Sydney Kingsford Smith

Tue 9/9

9:20 am-9:21 am

1 stop17h 01m

$919

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Tue 9/16

3:25 pm-11:05 am

2 stops26h 40m

Melbourne

Tue 9/23

6:00 am-6:46 pm

2 stops29h 46m

$943

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/20

Showing 1-10 of 60 results
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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 $1,030). Flying from Portland to Australia in December is currently the most expensive (average of $1,620). 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?

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 August 20, 2025.

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.

Reviews of airlines servicing Australia

Get insights into the airlines that provide service to Australia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Australia. Reviews last updated August 20, 2025.
See what other customers who have flown with Alaska Airlines, Delta, and Qantas Airways from Portland to Australia have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Entertainment

7.0

Crew

8.5

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

PDX - SJC

They had no snacks and had to pay for the Wifi.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Entertainment

7.0

Crew

8.5

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

PDX - SJC

They had no snacks and had to pay for the Wifi.
Delta
8.0
Very good
7,982 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Entertainment

7.0

Crew

8.5

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

PDX - SJC

They had no snacks and had to pay for the Wifi.
Qantas Airways
7.5
Good
896 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Entertainment

7.0

Crew

8.5

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

PDX - SJC

They had no snacks and had to pay for the Wifi.
United Airlines
7.4
Good
8,928 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Entertainment

7.0

Crew

8.5

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

PDX - SJC

They had no snacks and had to pay for the Wifi.
Air Canada
7.1
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Entertainment

7.0

Crew

8.5

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

PDX - SJC

They had no snacks and had to pay for the Wifi.

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?

    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.

  • How long is the flight from Portland to Australia?

    For as low as $908, Air Canada can have you in Australia from Portland in 18h 40m. Airlines will cover a distance of 7674 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    To fly one-way, consider booking your trip with Air Canada, which is currently one of the cheapest options available, starting at $539. United Airlines flights start at $575 while deals on Qantas Airways start at $578 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 $1,030). Flying from Portland to Australia in December is currently the most expensive (average of $1,620). 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

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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.
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Top 7 airlines flying from Portland to Australia

Discover the top 7 airlines that operate flights from Portland to Australia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$456Average$1,145FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$842Average$1,308FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$872Average$1,280FlexibilityNo cancel feeOn-time69%
Qantas AirwaysCheapest$898Average$1,625FlexibilityNo cancel feeOn-time74%
Hawaiian AirlinesCheapest$946Average$1,277FlexibilityNo cancel feeOn-time85%
American AirlinesCheapest$954Average$1,057FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$1,099Average$1,230FlexibilityNo cancel feeOn-time75%

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