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$401+ 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 8/11. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SYD
Jun 21 — Jun 281
Sat 6/21
Sat 6/28
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 June 16, 2025.

Round-trip from

$793
(Cheapflightsfares)

One-way from

$401
(Ovago)

Popular in

December

Cheapest in

May

Average price

$1,087
From Portland to Australia
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One-way flight from Portland to Australia
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Highest demand for flights based on searches. 13% potential increase in price ($176 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 June 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 June 16, 2025.

This Air Canada deal was found by Cheapflights users on 6/15. 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 9/217:40 pmPDX - SYD
1 stop18h 40mAir Canada
Sat 10/49:20 amSYD - PDX
1 stop17h 01mAir Canada
Deal found 6/15$777
This Cheapflightsfares deal was found by Cheapflights users on 6/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/92:56 pmPDX - SYD
1 stop23h 09mQantas Airways
Sat 8/235:45 pmSYD - PDX
1 stop20h 30mQantas Airways
Deal found 6/14$793
This American Airlines deal was found by Cheapflights users on 6/15. 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.
Thu 8/72:56 pmPDX - SYD
1 stop23h 09mAmerican Airlines
Fri 8/229:10 amSYD - PDX
2 stops24h 38mAmerican Airlines
Deal found 6/15$825
This Qantas Airways deal was found by Cheapflights users on 6/14. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/92:56 pmPDX - SYD
1 stop23h 09mMultiple Airlines
Sat 8/235:45 pmSYD - PDX
1 stop20h 30mMultiple Airlines
Deal found 6/14$834
This United Airlines deal was found by Cheapflights users on 6/14. 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 8/47:35 pmPDX - SYD
1 stop18h 20mUnited Airlines
Sat 8/169:30 amSYD - PDX
2 stops25h 01mUnited Airlines
Deal found 6/14$839
This Delta deal was found by Cheapflights users on 6/16. 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.
Sat 8/910:15 amPDX - SYD
1 stop27h 20mDelta
Sat 8/239:25 amSYD - PDX
2 stops30h 10mDelta
Deal found 6/16$855
This Air Canada deal was found by Cheapflights users on 6/13. 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.
Mon 11/37:05 pmPDX - BNE
1 stop19h 35mAir Canada
Sat 11/810:45 amBNE - PDX
1 stop16h 49mAir Canada
Deal found 6/13$961
This Orbitz deal was found by Cheapflights users on 6/13. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/145:55 pmPDX - AVV
2 stops35h 55mMultiple Airlines
Thu 9/252:55 pmAVV - PDX
2 stops25h 55mMultiple Airlines
Deal found 6/13$961
This Cheapflightsfares deal was found by Cheapflights users on 6/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1412:31 pmPDX - MEL
2 stops29h 34mQantas Airways
Thu 9/256:15 amMEL - PDX
2 stops27h 15mQantas Airways
Deal found 6/15$997
This Cheapflightsfares deal was found by Cheapflights users on 6/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/295:35 pmPDX - BNE
2 stops25h 00mQantas Airways
Fri 9/122:15 pmBNE - PDX
2 stops24h 04mQantas Airways
Deal found 6/14$1,000
This FlightHub deal was found by Cheapflights users on 6/15. 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.
Sat 7/510:05 amPDX - SYD
2 stops40h 10mANA
Thu 7/248:55 pmSYD - PDX
2 stops38h 51mANA
Deal found 6/15$1,008
This Travelocity deal was found by Cheapflights users on 6/14. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1910:10 amPDX - BNE
1 stop28h 30mMultiple Airlines
Sun 11/306:30 pmBNE - PDX
2 stops33h 04mMultiple Airlines
Deal found 6/14$1,014

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 June 16, 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

Sat 8/9

2:56 pm-7:05 am

1 stop23h 09m

Sydney Kingsford Smith

Sat 8/23

5:45 pm-9:15 pm

1 stop20h 30m

$793

PortlandSydney

PDX - SYD

PDXSYD

Portland

Tue 9/2

3:25 pm-10:40 am

2 stops26h 15m

Sydney Kingsford Smith

Tue 9/23

9:20 am-9:21 am

1 stop17h 01m

$796

PortlandSydney

PDX - SYD

PDXSYD

Portland

Thu 8/7

2:56 pm-7:05 am

1 stop23h 09m

Sydney Kingsford Smith

Fri 8/22

9:10 am-4:48 pm

2 stops24h 38m

$825

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sat 8/9

2:56 pm-7:05 am

1 stop23h 09m

Sydney Kingsford Smith

Sat 8/23

5:45 pm-9:15 pm

1 stop20h 30m

$834

PortlandSydney

PDX - SYD

PDXSYD

Portland

Mon 8/4

12:55 pm-7:00 am

2 stops25h 05m

Sydney Kingsford Smith

Sun 8/24

10:20 am-12:43 pm

1 stop19h 23m

$839

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sat 8/9

10:15 am-6:35 am

1 stop27h 20m

Sydney Kingsford Smith

Sat 8/23

9:25 am-10:35 pm

2 stops30h 10m

$855

PortlandMelbourne

PDX - AVV

PDXAVV

Portland

Thu 8/14

5:55 pm-10:50 pm

2 stops35h 55m

Melbourne Avalon

Thu 9/25

2:55 pm-11:50 pm

2 stops25h 55m

$961

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Thu 8/14

12:31 pm-11:05 am

2 stops29h 34m

Melbourne

Thu 9/25

6:15 am-4:30 pm

2 stops27h 15m

$997

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Fri 8/29

5:35 pm-11:35 am

2 stops25h 00m

Brisbane

Fri 9/12

2:15 pm-9:19 pm

2 stops24h 04m

$1,000

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sat 7/5

10:05 am-7:15 pm

2 stops40h 10m

Sydney Kingsford Smith

Thu 7/24

8:55 pm-6:46 pm

2 stops38h 51m

$1,008

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/15

Showing 1-10 of 42 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 $1,040). Flying from Portland to Australia in December is currently the most expensive (average of $1,635). 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 June 16, 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 June 16, 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
8.7
Very good
64 reviews

Food

7.8

Crew

9.0

Overall

8.7

Entertainment

7.3

Boarding

8.7

Comfort

8.1

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
64 reviews
Air Tahiti Nui
8.7
Very good
64 reviews

Food

7.8

Crew

9.0

Overall

8.7

Entertainment

7.3

Boarding

8.7

Comfort

8.1

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
886 reviews
Air Tahiti Nui
8.7
Very good
64 reviews

Food

7.8

Crew

9.0

Overall

8.7

Entertainment

7.3

Boarding

8.7

Comfort

8.1

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.
Asiana Airlines
8.2
Very good
441 reviews
Air Tahiti Nui
8.7
Very good
64 reviews

Food

7.8

Crew

9.0

Overall

8.7

Entertainment

7.3

Boarding

8.7

Comfort

8.1

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
1,308 reviews
Air Tahiti Nui
8.7
Very good
64 reviews

Food

7.8

Crew

9.0

Overall

8.7

Entertainment

7.3

Boarding

8.7

Comfort

8.1

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.
Delta
8.0
Very good
7,963 reviews
Air Tahiti Nui
8.7
Very good
64 reviews

Food

7.8

Crew

9.0

Overall

8.7

Entertainment

7.3

Boarding

8.7

Comfort

8.1

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 Qantas Airways, which is currently one of the cheapest options available, starting at $401. Air Canada flights start at $414 while deals on United Airlines start at $809 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 - Melbourne Avalon.

  • 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 $1,040). Flying from Portland to Australia in December is currently the most expensive (average of $1,635). 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.

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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 June 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$456Average$1,166FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$680Average$1,159FlexibilityNo cancel feeOn-time85%
Air CanadaCheapest$852Average$1,269FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$872Average$1,292FlexibilityNo cancel feeOn-time69%
Qantas AirwaysCheapest$1,036Average$1,567FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$1,055Average$1,179FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$1,068Average$1,223FlexibilityNo cancel feeOn-time75%
Qatar AirwaysCheapest$1,286Average$1,360FlexibilityNo cancel feeOn-time68%
Singapore AirlinesCheapest$1,374Average$1,502FlexibilityNo cancel feeOn-time81%

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