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$395+ 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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SYD
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 12, 2025.

Round-trip from

$777
(Air Canada)

One-way from

$395
(Travelocity)

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 ($178 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 12, 2025.

This Air Canada deal was found by Cheapflights users on 6/11. 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 8/207:40 pmPDX - SYD
1 stop18h 40mAir Canada
Wed 10/19:20 amSYD - PDX
1 stop17h 01mAir Canada
Deal found 6/11$777
This Cheapflightsfares deal was found by Cheapflights users on 6/11. 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 6/11$793
This Air Canada deal was found by Cheapflights users on 6/11. 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 9/147:40 pmPDX - MEL
2 stops22h 55mMultiple Airlines
Sun 9/286:00 amMEL - PDX
2 stops20h 21mMultiple Airlines
Deal found 6/11$833
This American Airlines deal was found by Cheapflights users on 6/11. 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 8/282:56 pmPDX - SYD
1 stop23h 34mAmerican Airlines
Thu 9/115:45 pmSYD - PDX
2 stops22h 26mAmerican Airlines
Deal found 6/11$840
This Delta deal was found by Cheapflights users on 6/11. 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 8/912:35 pmPDX - SYD
1 stop25h 00mDelta
Sat 8/309:25 amSYD - PDX
1 stop23h 34mDelta
Deal found 6/11$850
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Thu 8/281:01 pmPDX - SYD
2 stops24h 59mUnited Airlines
Sat 9/1310:20 amSYD - PDX
1 stop19h 23mUnited Airlines
Deal found 6/11$855
This Air Canada deal was found by Cheapflights users on 6/11. 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 8/2910:05 amPDX - BNE
1 stop28h 00mAir Canada
Fri 9/1210:00 amBNE - PDX
1 stop25h 46mAir Canada
Deal found 6/11$901
This Kiwi.com deal was found by Cheapflights users on 6/11. 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.
Tue 8/125:35 pmPDX - SYD
1 stop28h 05mMultiple Airlines
Sun 8/174:20 pmSYD - PDX
1 stop17h 00mMultiple Airlines
Deal found 6/11$982
This Orbitz deal was found by Cheapflights users on 6/11. 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.
Sun 9/145:35 pmPDX - AVV
2 stops27h 35mMultiple Airlines
Sun 9/288:55 pmAVV - PDX
2 stops33h 29mMultiple Airlines
Deal found 6/11$984
This Cheapflightsfares deal was found by Cheapflights users on 6/11. 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 stops24h 05mQantas Airways
Fri 9/122:15 pmBNE - PDX
2 stops24h 04mQantas Airways
Deal found 6/11$1,000
This FlightHub deal was found by Cheapflights users on 6/11. 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.
Wed 8/2710:05 amPDX - SYD
2 stops30h 20mANA
Wed 9/1011:50 amSYD - PDX
2 stops23h 56mANA
Deal found 6/11$1,020
This Justfly.com deal was found by Cheapflights users on 6/11. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/92:56 pmPDX - MEL
2 stops26h 39mQantas Airways
Sat 8/231:30 pmMEL - PDX
2 stops24h 45mQantas Airways
Deal found 6/11$1,037

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 12, 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 8/20

7:40 pm-7:20 am

1 stop18h 40m

Sydney Kingsford Smith

Wed 10/1

9:20 am-9:21 am

1 stop17h 01m

$777

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

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Sun 9/14

7:40 pm-11:35 am

2 stops22h 55m

Melbourne

Sun 9/28

6:00 am-9:21 am

2 stops20h 21m

$833

PortlandSydney

PDX - SYD

PDXSYD

Portland

Thu 8/28

2:56 pm-7:30 am

1 stop23h 34m

Sydney Kingsford Smith

Thu 9/11

5:45 pm-11:11 pm

2 stops22h 26m

$840

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sat 8/9

12:35 pm-6:35 am

1 stop25h 00m

Sydney Kingsford Smith

Sat 8/30

9:25 am-3:59 pm

1 stop23h 34m

$850

PortlandSydney

PDX - SYD

PDXSYD

Portland

Thu 8/28

1:01 pm-7:00 am

2 stops24h 59m

Sydney Kingsford Smith

Wed 9/10

10:20 am-3:05 pm

2 stops21h 45m

$855

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Fri 8/29

10:05 am-7:05 am

1 stop28h 00m

Brisbane

Fri 9/12

10:00 am-6:46 pm

1 stop25h 46m

$901

PortlandSydney

PDX - SYD

PDXSYD

Portland

Tue 8/12

5:35 pm-2:40 pm

1 stop28h 05m

Sydney Kingsford Smith

Sun 8/17

4:20 pm-4:20 pm

1 stop17h 00m

$982

PortlandMelbourne

PDX - AVV

PDXAVV

Portland

Sun 9/14

5:35 pm-2:10 pm

2 stops27h 35m

Melbourne Avalon

Sun 9/28

8:55 pm-1:24 pm

2 stops33h 29m

$984

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Fri 8/29

5:35 pm-10:40 am

2 stops24h 05m

Brisbane

Fri 9/12

2:15 pm-9:19 pm

2 stops24h 04m

$1,000

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 40 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 $1,041). 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 12, 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 12, 2025.
See what other customers who have flown with Air Tahiti Nui, ANA and Fiji Airways 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

Overall

8.7

Entertainment

7.3

Food

7.8

Boarding

8.7

Comfort

8.1

Crew

9.0

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

Overall

8.7

Entertainment

7.3

Food

7.8

Boarding

8.7

Comfort

8.1

Crew

9.0

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
882 reviews
Air Tahiti Nui
8.7
Very good
64 reviews

Overall

8.7

Entertainment

7.3

Food

7.8

Boarding

8.7

Comfort

8.1

Crew

9.0

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
194 reviews
Air Tahiti Nui
8.7
Very good
64 reviews

Overall

8.7

Entertainment

7.3

Food

7.8

Boarding

8.7

Comfort

8.1

Crew

9.0

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
1,302 reviews
Air Tahiti Nui
8.7
Very good
64 reviews

Overall

8.7

Entertainment

7.3

Food

7.8

Boarding

8.7

Comfort

8.1

Crew

9.0

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
7,950 reviews
Air Tahiti Nui
8.7
Very good
64 reviews

Overall

8.7

Entertainment

7.3

Food

7.8

Boarding

8.7

Comfort

8.1

Crew

9.0

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 Air Canada, which is currently one of the cheapest options available, starting at $395. American Airlines flights start at $429 while deals on United Airlines start at $436 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, March is the cheapest month in which you can book a flight from Portland to Australia (average of $1,041). 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.

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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$456Average$1,160FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$680Average$1,159FlexibilityNo cancel feeOn-time85%
Air CanadaCheapest$848Average$1,270FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$872Average$1,287FlexibilityNo cancel feeOn-time69%
Qantas AirwaysCheapest$1,043Average$1,568FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$1,055Average$1,200FlexibilityNo 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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