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$384+ 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 9/27. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SYD
jul. 23 — jul. 301
mié. 7/23
mié. 7/30
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 julio 18, 2025.

Round-trip from

$802
(Justfly.com)

One-way from

$384
(Ovago)

Popular in

December

Cheapest in

September

Average price

$1,151
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. 14% potential increase in price ($193 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($39 potential savings vs. average RT price).
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Average for round-trip flights in July 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 julio 18, 2025.

This Justfly.com deal was found by Cheapflights users on 7/16. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/22:56 pmPDX - SYD
1 stop23h 09mQantas Airways
mar. 9/235:45 pmSYD - PDX
1 stop19h 45mQantas Airways
Deal found 7/16$802
This Qantas Airways deal was found by Cheapflights users on 7/16. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/12:56 pmPDX - SYD
1 stop23h 09mMultiple Airlines
lun. 12/155:45 pmSYD - PDX
1 stop21h 50mMultiple Airlines
Deal found 7/16$815
This American Airlines deal was found by Cheapflights users on 7/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/13:22 pmPDX - SYD
2 stops22h 43mAmerican Airlines
lun. 12/152:20 pmSYD - PDX
1 stop25h 38mAmerican Airlines
Deal found 7/16$820
This United Airlines deal was found by Cheapflights users on 7/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/231:45 pmPDX - SYD
1 stop24h 10mUnited Airlines
mar. 9/3010:20 amSYD - PDX
1 stop21h 22mUnited Airlines
Deal found 7/16$831
This Delta deal was found by Cheapflights users on 7/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/171:20 pmPDX - SYD
2 stops24h 15mDelta
jue. 9/259:25 amSYD - PDX
1 stop19h 20mDelta
Deal found 7/15$837
This Air Canada deal was found by Cheapflights users on 7/15. 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.
sáb. 9/67:40 pmPDX - SYD
2 stops23h 00mAir Canada
mié. 9/109:20 amSYD - PDX
1 stop17h 01mAir Canada
Deal found 7/15$859
This Gotogate deal was found by Cheapflights users on 7/17. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/49:50 amPDX - SYD
2 stops39h 25mANA
mar. 11/189:45 pmSYD - PDX
2 stops39h 45mANA
Deal found 7/17$926
This Air Canada deal was found by Cheapflights users on 7/16. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/37:00 pmPDX - BNE
1 stop19h 45mAir Canada
sáb. 11/810:45 amBNE - PDX
1 stop16h 30mAir Canada
Deal found 7/16$961
This Travelocity deal was found by Cheapflights users on 7/17. 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.
lun. 9/155:35 pmPDX - AVV
2 stops33h 40mMultiple Airlines
mar. 9/306:00 amAVV - PDX
2 stops30h 10mMultiple Airlines
Deal found 7/17$972
This Trip.com deal was found by Cheapflights users on 7/16. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/185:35 pmPDX - BNE
2 stops29h 15mMultiple Airlines
mar. 9/307:00 amBNE - PDX
2 stops29h 10mMultiple Airlines
Deal found 7/16$990
This Travelocity deal was found by Cheapflights users on 7/17. 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.
lun. 9/155:35 pmPDX - MEL
2 stops24h 50mMultiple Airlines
mar. 9/3012:25 pmMEL - PDX
2 stops23h 45mMultiple Airlines
Deal found 7/17$1,018
This Ovago deal was found by Cheapflights users on 7/15. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/1412:35 pmPDX - BNE
1 stop23h 25mQantas Airways
mar. 12/3011:30 amBNE - PDX
1 stop21h 39mQantas Airways
Deal found 7/15$1,059

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 julio 18, 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

mar. 9/2

2:56 pm-7:05 am

1 stop23h 09m

Sydney Kingsford Smith

mar. 9/23

5:45 pm-8:30 pm

1 stop19h 45m

$802

PortlandSydney

PDX - SYD

PDXSYD

Portland

lun. 9/1

2:56 pm-7:05 am

1 stop23h 09m

Sydney Kingsford Smith

lun. 12/15

5:45 pm-8:35 pm

1 stop21h 50m

$815

PortlandSydney

PDX - SYD

PDXSYD

Portland

lun. 9/1

3:22 pm-7:05 am

2 stops22h 43m

Sydney Kingsford Smith

lun. 12/15

2:20 pm-8:58 pm

1 stop25h 38m

$820

PortlandSydney

PDX - SYD

PDXSYD

Portland

mar. 9/23

1:45 pm-6:55 am

1 stop24h 10m

Sydney Kingsford Smith

mar. 9/30

10:20 am-2:42 pm

1 stop21h 22m

$831

PortlandSydney

PDX - SYD

PDXSYD

Portland

mié. 9/17

5:10 pm-6:35 am

2 stops20h 25m

Sydney Kingsford Smith

mié. 9/24

9:25 am-2:51 pm

2 stops22h 26m

$837

PortlandSydney

PDX - SYD

PDXSYD

Portland

sáb. 9/6

7:40 pm-11:40 am

2 stops23h 00m

Sydney Kingsford Smith

mié. 9/10

9:20 am-9:21 am

1 stop17h 01m

$859

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

lun. 11/3

3:15 pm-8:45 am

1 stop23h 30m

Brisbane

sáb. 11/8

10:45 am-2:45 pm

1 stop22h 00m

$930

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

lun. 11/3

7:00 pm-1:30 pm

2 stops24h 30m

Brisbane

sáb. 11/8

10:45 am-9:15 am

1 stop16h 30m

$962

PortlandMelbourne

PDX - AVV

PDXAVV

Portland

lun. 9/15

5:35 pm-8:15 pm

2 stops33h 40m

Melbourne Avalon

mar. 9/30

6:00 am-7:10 pm

2 stops30h 10m

$972

PortlandSydney

PDX - SYD

PDXSYD

Portland

vie. 9/12

5:35 pm-7:05 am

1 stop20h 30m

Sydney Kingsford Smith

sáb. 9/27

9:10 am-7:10 pm

1 stop27h 00m

$1,015

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/15

Showing 1-10 of 50 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 $1,034). Flying from Portland to Australia in December is currently the most expensive (average of $1,623). 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 julio 18, 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 julio 18, 2025.
See what other customers who have flown with Air Tahiti Nui, ANA, and Singapore Airlines 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.
Air Tahiti Nui
8.6
Very good
65 reviews

Boarding

8.7

Comfort

8.0

Food

7.7

Entertainment

7.2

Crew

9.0

Overall

8.6

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
8.6
Very good
65 reviews
Air Tahiti Nui
8.6
Very good
65 reviews

Boarding

8.7

Comfort

8.0

Food

7.7

Entertainment

7.2

Crew

9.0

Overall

8.6

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
8.4
Very good
913 reviews
Air Tahiti Nui
8.6
Very good
65 reviews

Boarding

8.7

Comfort

8.0

Food

7.7

Entertainment

7.2

Crew

9.0

Overall

8.6

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
1,327 reviews
Air Tahiti Nui
8.6
Very good
65 reviews

Boarding

8.7

Comfort

8.0

Food

7.7

Entertainment

7.2

Crew

9.0

Overall

8.6

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
201 reviews
Air Tahiti Nui
8.6
Very good
65 reviews

Boarding

8.7

Comfort

8.0

Food

7.7

Entertainment

7.2

Crew

9.0

Overall

8.6

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
7,959 reviews
Air Tahiti Nui
8.6
Very good
65 reviews

Boarding

8.7

Comfort

8.0

Food

7.7

Entertainment

7.2

Crew

9.0

Overall

8.6

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 $384. Delta flights start at $409 while deals on Air Canada start at $562 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 $1,034). Flying from Portland to Australia in December is currently the most expensive (average of $1,623). 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

Browse thousands of different options on Cheapflights for your next trip

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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 julio 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$456Average$1,158FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$550Average$1,277FlexibilityNo cancel feeOn-time85%
Air CanadaCheapest$848Average$1,292FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$872Average$1,289FlexibilityNo cancel feeOn-time69%
Qantas AirwaysCheapest$929Average$1,559FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$1,055Average$1,179FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$1,099Average$1,228FlexibilityNo cancel feeOn-time75%
Qatar AirwaysCheapest$1,288Average$1,362FlexibilityNo cancel feeOn-time68%
Singapore AirlinesCheapest$1,374Average$1,430FlexibilityNo cancel feeOn-time81%

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