HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Australia

$528+ 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 7 — Apr 141
Mon 4/7
Mon 4/14
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Portland to Australia with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 2, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$903
(Air Canada)

One-way from

$528
(Alaska Airlines)

Popular in

December

Cheapest in

February

Average price

$1,291
Provider with most accurate pricing for Portland-Sydney Kingsford Smith flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Sydney Kingsford Smith flights.
Search Deals
From Portland to Australia
Search Deals
One-way flight from Portland to Australia
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($151 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

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 2, 2025.

This Air Canada deal was found by Cheapflights users on 4/1. 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 9/23:25 pmPDX - SYD
1 stop22h 55mAir Canada
Tue 9/169:20 amSYD - PDX
1 stop17h 01mAir Canada
Deal found 4/1$903
This Air Canada deal was found by Cheapflights users on 4/1. 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 40mMultiple Airlines
Tue 9/166:00 amSYD - PDX
2 stops20h 21mMultiple Airlines
Deal found 4/1$913
This FlightHub deal was found by Cheapflights users on 4/2. 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.
Sun 8/37:40 pmPDX - MEL
2 stops24h 40mMultiple Airlines
Sun 8/108:45 pmMEL - PDX
2 stops29h 40mMultiple Airlines
Deal found 4/2$1,059
This Air Canada deal was found by Cheapflights users on 4/2. 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 11/210:10 amPDX - BNE
1 stop28h 30mAir Canada
Sat 11/1510:45 amBNE - PDX
1 stop21h 59mAir Canada
Deal found 4/2$1,065
This Alaska Airlines deal was found by Cheapflights users on 4/1. 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 8/137:30 amPDX - SYD
1 stop19h 15mAlaska Airlines
Tue 8/269:40 pmSYD - PDX
2 stops25h 28mAlaska Airlines
Deal found 4/1$1,144
This Air Canada deal was found by Cheapflights users on 4/2. 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 10/143:25 pmPDX - BNE
1 stop22h 40mMultiple Airlines
Tue 11/46:10 amBNE - PDX
2 stops21h 24mMultiple Airlines
Deal found 4/2$1,145
This Hawaiian Airlines deal was found by Cheapflights users on 4/1. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/47:30 amPDX - SYD
1 stop19h 15mHawaiian Airlines
Fri 7/119:40 pmSYD - PDX
1 stop25h 15mHawaiian Airlines
Deal found 4/1$1,151
This Delta deal was found by Cheapflights users on 4/1. 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.
Wed 11/51:37 pmPDX - BNE
2 stops24h 08mDelta
Fri 11/1410:45 amBNE - PDX
2 stops24h 21mDelta
Deal found 4/1$1,157
This United deal was found by Cheapflights users on 4/2. 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.
Sun 11/211:55 pmPDX - BNE
2 stops37h 35mUnited Airlines
Sat 11/1511:40 amBNE - PDX
2 stops28h 58mUnited Airlines
Deal found 4/2$1,165
This Fareboom deal was found by Cheapflights users on 4/1. 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 Fareboom is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/77:30 amPDX - ADL
2 stops34h 55mMultiple Airlines
Thu 8/214:30 pmADL - PDX
2 stops22h 40mMultiple Airlines
Deal found 4/1$1,216
This American Airlines deal was found by Cheapflights users on 4/2. 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.
Wed 11/512:30 pmPDX - SYD
1 stop25h 30mAmerican Airlines
Wed 11/2611:15 amSYD - PDX
1 stop19h 45mAmerican Airlines
Deal found 4/2$1,241
This United deal was found by Cheapflights users on 4/1. 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.
Sun 8/31:37 pmPDX - MEL
1 stop25h 38mUnited Airlines
Sun 8/1010:55 amMEL - PDX
1 stop26h 42mUnited Airlines
Deal found 4/1$1,249

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 2, 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

Tue 9/2

3:25 pm-7:20 am

1 stop22h 55m

Sydney Kingsford Smith

Tue 9/16

9:20 am-9:21 am

1 stop17h 01m

$903

PortlandSydney

PDX - SYD

PDXSYD

Portland

Tue 9/2

7:40 pm-7:20 am

1 stop18h 40m

Sydney Kingsford Smith

Tue 9/16

6:00 am-9:21 am

2 stops20h 21m

$913

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Sun 8/3

7:40 pm-1:20 pm

2 stops24h 40m

Melbourne

Sun 8/10

8:45 pm-9:25 am

2 stops29h 40m

$1,059

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Mon 6/2

7:40 pm-7:05 am

1 stop18h 25m

Brisbane

Mon 6/9

10:00 am-9:20 am

1 stop16h 20m

$1,139

PortlandSydney

PDX - SYD

PDXSYD

Portland

Wed 8/13

7:30 am-7:45 pm

1 stop19h 15m

Sydney Kingsford Smith

Tue 8/26

9:40 pm-6:08 am

2 stops25h 28m

$1,144

PortlandSydney

PDX - SYD

PDXSYD

Portland

Fri 7/4

7:30 am-7:45 pm

1 stop19h 15m

Sydney Kingsford Smith

Fri 7/11

9:40 pm-5:55 am

1 stop25h 15m

$1,151

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Mon 6/2

3:25 pm-11:30 am

2 stops27h 05m

Brisbane

Mon 6/9

8:45 pm-9:20 am

2 stops29h 35m

$1,189

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Thu 8/7

7:30 am-10:55 am

2 stops34h 55m

Adelaide

Thu 8/21

4:30 pm-10:40 pm

2 stops22h 40m

$1,216

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Sun 5/25

11:00 am-6:30 am

2 stops26h 30m

Brisbane

Sun 6/8

10:30 am-6:35 pm

1 stop25h 05m

$1,243

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Sun 8/3

1:37 pm-8:15 am

1 stop25h 38m

Melbourne

Sun 8/10

10:55 am-8:37 pm

1 stop26h 42m

$1,249

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/1

Showing 1-10 of 47 results
1
2
3
...
5

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 $1,046). 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 2, 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 2, 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 stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Tahiti Nui
8.7
Very good
61 reviews

Food

7.8

Boarding

8.7

Comfort

8.0

Entertainment

7.2

Crew

9.1

Overall

8.7

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

Food

7.8

Boarding

8.7

Comfort

8.0

Entertainment

7.2

Crew

9.1

Overall

8.7

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
830 reviews
Air Tahiti Nui
8.7
Very good
61 reviews

Food

7.8

Boarding

8.7

Comfort

8.0

Entertainment

7.2

Crew

9.1

Overall

8.7

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
1,288 reviews
Air Tahiti Nui
8.7
Very good
61 reviews

Food

7.8

Boarding

8.7

Comfort

8.0

Entertainment

7.2

Crew

9.1

Overall

8.7

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
180 reviews
Air Tahiti Nui
8.7
Very good
61 reviews

Food

7.8

Boarding

8.7

Comfort

8.0

Entertainment

7.2

Crew

9.1

Overall

8.7

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.
Emirates
8.0
Very good
3,193 reviews
Air Tahiti Nui
8.7
Very good
61 reviews

Food

7.8

Boarding

8.7

Comfort

8.0

Entertainment

7.2

Crew

9.1

Overall

8.7

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 $528. Air Canada flights start at $684 while deals on United Airlines start at $873 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, February is the cheapest month in which you can book a flight from Portland to Australia (average of $1,046). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Portland to Australia

See prices for flight routes from nearby airports that may be better suited for you.
Portland to Sydney flights
Portland to Auckland flights
Portland to Brisbane flights
Portland to Nadi flights
Portland to Melbourne flights
Portland to Papeete flights
Boise to Auckland flights
Portland to Tamuning flights
Portland to Christchurch flights
Redmond to Sydney flights
Portland to Rarotonga flights
Portland to Vaitape flights
Boise to Sydney flights
Portland to Avalon flights
Portland to Perth flights
Eugene to Sydney flights
Eugene to Brisbane flights
Boise to Papeete flights
Eugene to Nadi flights
Portland to Queenstown flights
Portland to Wellington flights
Redmond to Papeete flights
Portland to Adelaide flights
Redmond to Nadi flights
Boise to Nadi flights
Portland to Suva flights
Portland to Majuro flights
Boise to Tamuning flights
Portland to Nuku‘alofa flights
Boise to Christchurch flights
Portland to Townsville flights
Portland to Coolangatta flights
Portland to Napier flights
Portland to Port Vila flights
Medford to Sydney flights
Medford to Papeete flights
Medford to Auckland flights
Portland to Taupo flights
Boise to Adelaide flights
Portland to Rotorua flights
Portland to Koror flights
Portland to Raiatea flights
Portland to Pago Pago flights
Portland to Tontouta flights
Portland to Fare flights
Eugene to Auckland flights
Eugene to Perth flights
Medford to Christchurch flights

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 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$444Average$1,097FlexibilityNo cancel feeOn-time85%
DeltaCheapest$456Average$1,241FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$759Average$1,358FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$846Average$1,272FlexibilityNo cancel feeOn-time67%
Qantas AirwaysCheapest$1,036Average$1,446FlexibilityNo 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%
Qatar AirwaysCheapest$1,286Average$1,360FlexibilityNo cancel feeOn-time68%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.