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$561+ 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 6/27. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SYD
May 5 — May 121
Mon 5/5
Mon 5/12
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 April 30, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$998
(Kiwi.com)

One-way from

$561
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$1,219
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. 12% potential increase in price ($175 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 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 April 30, 2025.

This Kiwi.com deal was found by Cheapflights users on 4/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/139:50 pmPDX - SYD
2 stops47h 50mMultiple Airlines
Wed 8/204:20 pmSYD - PDX
1 stop23h 20mMultiple Airlines
Deal found 4/29$924
This StudentUniverse deal was found by Cheapflights users on 4/28. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/215:40 pmPDX - SYD
2 stops21h 05mAir New Zealand
Tue 11/1811:45 amSYD - PDX
2 stops21h 57mAir New Zealand
Deal found 4/28$1,108
This flugladen.de deal was found by Cheapflights users on 4/29. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/275:33 pmPDX - SYD
1 stop33h 12mHawaiian Airlines
Sat 6/79:40 pmSYD - PDX
1 stop17h 15mHawaiian Airlines
Deal found 4/29$1,125
This Air Canada deal was found by Cheapflights users on 4/29. 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 9/27:40 pmPDX - SYD
1 stop18h 40mAir Canada
Tue 9/239:20 amSYD - PDX
1 stop22h 26mAir Canada
Deal found 4/29$1,144
This Alaska Airlines deal was found by Cheapflights users on 4/28. 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.
Wed 5/78:05 amPDX - SYD
1 stop18h 40mAlaska Airlines
Sun 5/189:40 pmSYD - PDX
1 stop25h 40mAlaska Airlines
Deal found 4/28$1,158
This lastminute.com deal was found by Cheapflights users on 4/28. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/108:05 amPDX - ADL
2 stops31h 40mMultiple Airlines
Fri 5/164:30 pmADL - PDX
2 stops21h 55mMultiple Airlines
Deal found 4/28$1,160
This Air Canada deal was found by Cheapflights users on 4/29. 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.
Wed 10/157:40 pmPDX - MEL
2 stops22h 30mMultiple Airlines
Sun 10/267:10 amMEL - PDX
2 stops20h 24mMultiple Airlines
Deal found 4/29$1,178
This Gurufare deal was found by Cheapflights users on 4/29. 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.
Wed 11/54:15 pmPDX - MEL
2 stops23h 35mAir New Zealand
Wed 11/198:35 amMEL - PDX
2 stops25h 07mAir New Zealand
Deal found 4/29$1,212
This Air Canada deal was found by Cheapflights users on 4/29. 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.
Fri 11/147:05 pmPDX - MEL
2 stops24h 10mAir Canada
Tue 11/258:10 amMEL - PDX
2 stops25h 34mAir Canada
Deal found 4/29$1,225
This Travelis deal was found by Cheapflights users on 4/28. 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 Travelis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/227:40 pmPDX - AVV
2 stops31h 25mMultiple Airlines
Mon 7/78:40 pmAVV - PDX
2 stops29h 45mMultiple Airlines
Deal found 4/28$1,230
This United Airlines deal was found by Cheapflights users on 4/28. 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.
Sun 6/221:25 pmPDX - MEL
1 stop25h 50mUnited Airlines
Mon 7/710:55 amMEL - PDX
1 stop26h 42mUnited Airlines
Deal found 4/28$1,239
This American Airlines deal was found by Cheapflights users on 4/28. 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 11/3012:30 pmPDX - SYD
1 stop25h 30mAmerican Airlines
Tue 12/911:15 amSYD - PDX
1 stop19h 50mAmerican Airlines
Deal found 4/28$1,242

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 April 30, 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

Wed 8/13

9:50 pm-2:40 pm

2 stops47h 50m

Sydney Kingsford Smith

Wed 8/20

4:20 pm-10:40 pm

1 stop23h 20m

$924

PortlandSydney

PDX - SYD

PDXSYD

Portland

Tue 10/21

5:40 pm-8:45 am

2 stops21h 05m

Sydney Kingsford Smith

Tue 11/18

11:45 am-2:42 pm

2 stops21h 57m

$1,108

PortlandSydney

PDX - SYD

PDXSYD

Portland

Tue 5/27

5:33 pm-7:45 pm

1 stop33h 12m

Sydney Kingsford Smith

Sat 6/7

9:40 pm-9:55 pm

1 stop17h 15m

$1,125

PortlandSydney

PDX - SYD

PDXSYD

Portland

Tue 9/2

7:40 pm-7:20 am

1 stop18h 40m

Sydney Kingsford Smith

Tue 9/23

9:20 am-2:46 pm

1 stop22h 26m

$1,144

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sat 5/10

8:05 am-7:45 pm

1 stop18h 40m

Sydney Kingsford Smith

Sun 5/18

9:40 pm-6:20 am

1 stop25h 40m

$1,158

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Sat 5/10

8:05 am-8:15 am

2 stops31h 40m

Adelaide

Fri 5/16

4:30 pm-9:55 pm

2 stops21h 55m

$1,160

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Wed 10/15

7:40 pm-12:10 pm

2 stops22h 30m

Melbourne

Sun 10/26

7:10 am-9:34 am

2 stops20h 24m

$1,178

PortlandMelbourne

PDX - AVV

PDXAVV

Portland

Sun 6/22

7:40 pm-8:05 pm

2 stops31h 25m

Melbourne Avalon

Mon 7/7

8:40 pm-9:25 am

2 stops29h 45m

$1,230

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Sun 6/22

3:25 pm-11:35 am

2 stops27h 10m

Melbourne

Mon 7/7

9:40 pm-6:46 pm

2 stops38h 06m

$1,233

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Sun 6/22

12:42 pm-8:15 am

2 stops26h 33m

Melbourne

Mon 7/7

10:55 am-8:37 pm

1 stop26h 42m

$1,239

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/27

Showing 1-10 of 48 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 $1,043). 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 April 30, 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 April 30, 2025.
See what other customers who have flown with Air Tahiti Nui, ANA and Asiana 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

Comfort

8.1

Crew

9.1

Entertainment

7.3

Overall

8.8

Boarding

8.7

Food

7.8

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

Comfort

8.1

Crew

9.1

Entertainment

7.3

Overall

8.8

Boarding

8.7

Food

7.8

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
855 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Comfort

8.1

Crew

9.1

Entertainment

7.3

Overall

8.8

Boarding

8.7

Food

7.8

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.
Asiana Airlines
8.2
Very good
442 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Comfort

8.1

Crew

9.1

Entertainment

7.3

Overall

8.8

Boarding

8.7

Food

7.8

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
8.1
Very good
190 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Comfort

8.1

Crew

9.1

Entertainment

7.3

Overall

8.8

Boarding

8.7

Food

7.8

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
1,292 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Comfort

8.1

Crew

9.1

Entertainment

7.3

Overall

8.8

Boarding

8.7

Food

7.8

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 Alaska Airlines, which is currently one of the cheapest options available, starting at $735. United Airlines flights start at $833 while deals on Qantas Airways start at $868 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 - Brisbane and Portland - Melbourne.

  • 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 $1,043). 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 9 airlines flying from Portland to Australia

Discover the top 9 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 April 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$444Average$1,277FlexibilityNo cancel feeOn-time85%
DeltaCheapest$456Average$1,186FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$759Average$1,292FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$844Average$1,264FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$921Average$1,129FlexibilityNo cancel feeOn-time71%
Qantas AirwaysCheapest$1,036Average$1,430FlexibilityNo cancel feeOn-time74%
Alaska AirlinesCheapest$1,068Average$1,252FlexibilityNo cancel feeOn-time75%
Singapore AirlinesCheapest$1,275Average$1,502FlexibilityNo cancel feeOn-time81%
Qatar AirwaysCheapest$1,286Average$1,360FlexibilityNo cancel feeOn-time68%

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