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$441+ 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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SYD
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
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 March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$921
(Air Canada)

One-way from

$441
(American Airlines)

Popular in

December

Cheapest in

February

Average price

$1,083
Provider with most accurate pricing for Portland-Sydney Kingsford Smith flight deals.
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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. 11% potential increase in price ($152 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($37 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 28, 2025.

This Air Canada deal was found by Cheapflights users on 3/26. 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.
Sun 9/73:25 pmPDX - SYD
1 stop22h 55mMultiple Airlines
Sat 9/208:00 pmSYD - PDX
2 stops30h 31mMultiple Airlines
Deal found 3/26$921
This Air Canada deal was found by Cheapflights users on 3/26. 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.
Sun 9/710:10 amPDX - SYD
1 stop28h 10mAir Canada
Sat 9/209:20 amSYD - PDX
1 stop22h 26mAir Canada
Deal found 3/26$946
This United deal was found by Cheapflights users on 3/25. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/33:46 pmPDX - SYD
1 stop22h 09mUnited Airlines
Sat 5/1010:20 amSYD - PDX
1 stop24h 57mUnited Airlines
Deal found 3/25$964
This American Airlines deal was found by Cheapflights users on 3/27. 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.
Sun 5/1112:09 pmPDX - SYD
1 stop25h 56mAmerican Airlines
Sun 5/189:10 amSYD - PDX
1 stop19h 15mAmerican Airlines
Deal found 3/27$1,007
This Air Canada deal was found by Cheapflights users on 3/27. 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.
Sun 8/37:40 pmPDX - MEL
2 stops22h 45mMultiple Airlines
Sun 8/106:00 amMEL - PDX
2 stops29h 46mMultiple Airlines
Deal found 3/27$1,052
This Air Canada deal was found by Cheapflights users on 3/27. 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.
Sun 11/27:05 pmPDX - BNE
1 stop19h 35mAir Canada
Sat 11/1510:45 amBNE - PDX
1 stop21h 59mAir Canada
Deal found 3/27$1,066
This Air Canada deal was found by Cheapflights users on 3/27. 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.
Sun 11/27:05 pmPDX - BNE
2 stops24h 20mMultiple Airlines
Sat 11/156:05 amBNE - PDX
2 stops21h 29mMultiple Airlines
Deal found 3/27$1,130
This Alaska Airlines deal was found by Cheapflights users on 3/26. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/276:08 amPDX - SYD
2 stops32h 52mAlaska Airlines
Thu 4/310:10 amSYD - PDX
2 stops21h 25mAlaska Airlines
Deal found 3/26$1,154
This Gurufare deal was found by Cheapflights users on 3/27. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1310:10 amPDX - SYD
2 stops40h 05mANA
Wed 5/218:55 pmSYD - PDX
2 stops38h 50mANA
Deal found 3/27$1,215
This United Airlines deal was found by Cheapflights users on 3/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/19:53 amPDX - MEL
1 stop29h 22mUnited Airlines
Tue 9/2310:55 amMEL - PDX
1 stop26h 41mUnited Airlines
Deal found 3/26$1,249
This United Airlines deal was found by Cheapflights users on 3/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1512:40 pmPDX - BNE
2 stops24h 50mUnited Airlines
Tue 9/2310:30 amBNE - PDX
2 stops24h 08mUnited Airlines
Deal found 3/25$1,257
This Delta deal was found by Cheapflights users on 3/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/235:10 pmPDX - SYD
1 stop20h 25mDelta
Tue 1/62:15 pmSYD - PDX
1 stop27h 12mDelta
Deal found 3/27$1,301

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 March 28, 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

Sun 9/7

3:25 pm-7:20 am

1 stop22h 55m

Sydney Kingsford Smith

Sat 9/20

8:00 pm-9:31 am

2 stops30h 31m

$921

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sun 9/7

10:10 am-7:20 am

1 stop28h 10m

Sydney Kingsford Smith

Sat 9/20

9:20 am-2:46 pm

1 stop22h 26m

$946

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sat 5/3

3:46 pm-6:55 am

1 stop22h 09m

Sydney Kingsford Smith

Sat 5/10

10:20 am-6:17 pm

1 stop24h 57m

$964

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sun 5/11

12:09 pm-7:05 am

1 stop25h 56m

Sydney Kingsford Smith

Sun 5/18

9:10 am-11:25 am

1 stop19h 15m

$1,007

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Sun 8/3

7:40 pm-11:25 am

2 stops22h 45m

Melbourne

Sun 8/10

6:00 am-6:46 pm

2 stops29h 46m

$1,052

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Wed 9/17

3:25 pm-7:05 am

1 stop22h 40m

Brisbane

Wed 9/24

10:00 am-2:46 pm

1 stop21h 46m

$1,139

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Wed 9/17

7:40 pm-12:05 pm

2 stops23h 25m

Brisbane

Wed 9/24

10:00 am-9:31 am

1 stop16h 31m

$1,160

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sun 5/11

9:05 am-7:45 pm

2 stops41h 40m

Sydney Kingsford Smith

Sun 5/18

9:40 pm-6:20 am

2 stops25h 40m

$1,179

PortlandSydney

PDX - SYD

PDXSYD

Portland

Tue 5/13

10:10 am-7:15 pm

2 stops40h 05m

Sydney Kingsford Smith

Wed 5/21

8:55 pm-6:45 pm

2 stops38h 50m

$1,215

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Tue 7/1

9:53 am-8:15 am

1 stop29h 22m

Melbourne

Tue 9/23

10:55 am-8:36 pm

1 stop26h 41m

$1,249

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/26

Showing 1-10 of 44 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, March is the cheapest month in which you can book a flight from Portland to Australia (average of $1,044). 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?

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 March 28, 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.

Rainfall in Australia by month

Plan your trip to Australia by taking into account the average rainfall totals 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

Plan your trip to Australia by taking into account the average temperature totals 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

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 March 28, 2025.
See what other customers who have flown with Air Tahiti Nui, Japan Airlines and ANA 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
8.7
Very good
61 reviews

Entertainment

7.2

Comfort

8.0

Overall

8.7

Boarding

8.7

Food

7.8

Crew

9.1

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
8.7
Very good
61 reviews
Air Tahiti Nui
8.7
Very good
61 reviews

Entertainment

7.2

Comfort

8.0

Overall

8.7

Boarding

8.7

Food

7.8

Crew

9.1

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.
Japan Airlines
8.3
Very good
1,440 reviews
Air Tahiti Nui
8.7
Very good
61 reviews

Entertainment

7.2

Comfort

8.0

Overall

8.7

Boarding

8.7

Food

7.8

Crew

9.1

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.
ANA
8.3
Very good
829 reviews
Air Tahiti Nui
8.7
Very good
61 reviews

Entertainment

7.2

Comfort

8.0

Overall

8.7

Boarding

8.7

Food

7.8

Crew

9.1

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.
Singapore Airlines
8.1
Very good
1,285 reviews
Air Tahiti Nui
8.7
Very good
61 reviews

Entertainment

7.2

Comfort

8.0

Overall

8.7

Boarding

8.7

Food

7.8

Crew

9.1

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.
Fiji Airways
8.0
Very good
182 reviews
Air Tahiti Nui
8.7
Very good
61 reviews

Entertainment

7.2

Comfort

8.0

Overall

8.7

Boarding

8.7

Food

7.8

Crew

9.1

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.

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.

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

    To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $441. Alaska Airlines flights start at $523 while deals on ANA start at $726 one-way.

  • What are the most popular routes from Portland to Australia?

    The most popular flight routes from Portland to Australia are Portland - Melbourne, Portland - Sydney Kingsford Smith 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, March is the cheapest month in which you can book a flight from Portland to Australia (average of $1,044). 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

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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 8 airlines flying from Portland to Australia

Discover the top 8 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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$444Average$1,080FlexibilityNo cancel feeOn-time85%
DeltaCheapest$456Average$1,241FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$759Average$1,358FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$847Average$1,272FlexibilityNo cancel feeOn-time67%
Qantas AirwaysCheapest$1,036Average$1,447FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$1,055Average$1,142FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$1,068Average$1,255FlexibilityNo cancel feeOn-time75%
Singapore AirlinesCheapest$1,275Average$1,502FlexibilityNo cancel feeOn-time81%
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