HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Australia

$561+ Cheap flights from Oregon 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 4 — May 111
Sun 5/4
Sun 5/11
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Oregon 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 Oregon to Australia

Keep the following information in mind while searching for Oregon to Australia flight deals. Data was last updated April 29, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$1,013
(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.
Search Deals
Provider most trusted by Cheapflights users for Portland-Sydney Kingsford Smith flights.
Search Deals
From Oregon to Australia
Search Deals
One-way flight from Oregon to Australia
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($175 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($37 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find flight deals from Oregon to Australia

Cheapest flights from Oregon to Australia
Explore the most affordable flight options available from Oregon to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2025.

This Kiwi.com deal was found by Cheapflights users on 4/27. 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 6/112:52 pmPDX - SYD
2 stops30h 48mMultiple Airlines
Wed 6/184:20 pmSYD - PDX
1 stop22h 45mMultiple Airlines
Deal found 4/27$1,013
This Air Canada deal was found by Cheapflights users on 4/27. 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 10/3110:10 amPDX - BNE
1 stop28h 30mAir Canada
Sun 11/910:45 amBNE - PDX
1 stop21h 59mAir Canada
Deal found 4/27$1,067
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 11/119:55 amSYD - PDX
2 stops23h 47mAir New Zealand
Deal found 4/28$1,108
This Air Canada deal was found by Cheapflights users on 4/27. 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 10/317:05 pmPDX - BNE
2 stops22h 50mMultiple Airlines
Sun 11/96:05 amBNE - PDX
2 stops26h 39mMultiple Airlines
Deal found 4/27$1,124
This Air Canada 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 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 9/239:20 amSYD - PDX
1 stop22h 26mAir Canada
Deal found 4/28$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
Tue 5/209:40 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 United Airlines deal was found by Cheapflights users on 4/26. 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 12/11:42 pmPDX - BNE
1 stop23h 48mUnited Airlines
Sat 1/3111:40 amBNE - PDX
1 stop18h 47mUnited Airlines
Deal found 4/26$1,162
This Air Canada 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 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 4/28$1,178
This Gurufare 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 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 11/1912:05 pmMEL - PDX
2 stops21h 37mAir New Zealand
Deal found 4/28$1,212
This Air Canada 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 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 4/28$1,225
This Jetabroad deal was found by Cheapflights users on 4/27. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/155:35 pmPDX - MEL
2 stops45h 00mHawaiian Airlines
Sun 8/246:00 pmMEL - PDX
2 stops21h 40mHawaiian Airlines
Deal found 4/27$1,229

Cheapflights Fare Finder

Customize your flight search to find flights from Oregon 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 29, 2025.
Use the filters below to find and compare flights from Oregon to Australia that are best for you.

Fly from

Oregon

Fly to

Australia

Route

Depart

Return

Price

PortlandSydney

PDX - SYD

PDXSYD

Portland

Wed 6/11

2:52 pm-2:40 pm

2 stops30h 48m

Sydney Kingsford Smith

Wed 6/18

4:20 pm-10:05 pm

1 stop22h 45m

$1,013

PortlandSydney

PDX - SYD

PDXSYD

Portland

Wed 5/7

8:05 am-7:45 pm

1 stop18h 40m

Sydney Kingsford Smith

Tue 5/20

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

Tue 6/10

2:37 pm-11:30 am

2 stops27h 53m

Melbourne

Tue 6/17

12:55 pm-6:26 pm

2 stops22h 31m

$1,184

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Wed 6/11

2:52 pm-10:35 am

2 stops26h 43m

Brisbane

Wed 6/18

11:35 am-6:26 pm

2 stops23h 51m

$1,227

RedmondSydney

RDM - SYD

RDMSYD

Bend/Redmond

Mon 6/23

2:11 pm-7:05 am

2 stops23h 54m

Sydney Kingsford Smith

Mon 7/7

9:10 am-11:44 am

1 stop19h 34m

$1,247

BoiseSydney

BOI - SYD

BOISYD

Boise Air Term. Gowen Fld

Wed 9/10

7:09 pm-8:45 am

2 stops21h 36m

Sydney Kingsford Smith

Fri 9/19

11:50 am-1:30 pm

2 stops41h 40m

$1,256

RedmondSydney

RDM - SYD

RDMSYD

Bend/Redmond

Mon 6/23

3:49 pm-7:00 am

1 stop22h 11m

Sydney Kingsford Smith

Mon 7/7

10:20 am-12:11 pm

1 stop18h 51m

$1,257

EugeneSydney

EUG - SYD

EUGSYD

Eugene

Thu 6/12

1:30 pm-7:45 pm

2 stops37h 15m

Sydney Kingsford Smith

Thu 6/19

9:40 pm-12:36 pm

2 stops31h 56m

$1,259

PortlandSydney

PDX - SYD

PDXSYD

Portland

Tue 5/13

5:40 pm-7:45 pm

1 stop33h 05m

Sydney Kingsford Smith

Tue 5/20

9:40 pm-6:20 am

2 stops25h 40m

$1,268

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/27

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

Best time to book a flight from Oregon to Australia

Have a flexible travel schedule? Discover the best time to fly to Australia from Oregon 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 Oregon to Australia

What is the cheapest month to book a flight from Oregon to Australia?

Currently, February is the cheapest month in which you can book a flight from Oregon to Australia (average of $1,046). Flying from Oregon 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 OR to AU?

Find hourly flight availability from Oregon 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 29, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Oregon to Australia as you normally would.

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 29, 2025.
To help decide which airline to fly from Oregon to Australia, see what other customers have to say about Air Tahiti Nui, ANA and Asiana Airlines. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Tahiti Nui
8.8
Very good
62 reviews

Comfort

8.1

Entertainment

7.3

Crew

9.1

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

Entertainment

7.3

Crew

9.1

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

Entertainment

7.3

Crew

9.1

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

Entertainment

7.3

Crew

9.1

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

Entertainment

7.3

Crew

9.1

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

Entertainment

7.3

Crew

9.1

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 Oregon to Australia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from Oregon to Australia one-way?

    For one-way options, check prices for Alaska Airlines. According to our data, you can fly for as low as $696. Users have also found prices from $748 and $888 on United Airlines and American Airlines, respectively.

  • Can I find deals for flights from Oregon to Australia that include hotel bookings?

    Yes. In addition to deals on Oregon to Australia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Oregon to Australia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Oregon to Australia.

  • Can I find deals for business class flights from Oregon to Australia?

    Yes. Cheapflights offers flight deals from Oregon 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 Oregon to Australia?

    Currently, February is the cheapest month in which you can book a flight from Oregon to Australia (average of $1,046). Flying from Oregon 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 Oregon to Australia

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Sydney flights
Los Angeles to Papeete flights
John F Kennedy Intl to Sydney flights
Los Angeles to Melbourne flights
Dallas/Fort Worth to Sydney flights
Newark to Sydney flights
Los Angeles to Auckland flights
Dallas/Fort Worth to Melbourne flights
San Francisco to Sydney flights
LaGuardia to Sydney flights
John F Kennedy Intl to Auckland flights
San Francisco to Melbourne flights
Los Angeles to Brisbane flights
San Francisco to Auckland flights
Los Angeles to Nadi flights
Dulles Intl to Sydney flights
O'Hare Intl to Sydney flights
Reagan-National to Melbourne flights
Seattle to Melbourne flights
San Francisco to Papeete flights
Dulles Intl to Melbourne flights
John F Kennedy Intl to Melbourne flights
Ontario to Sydney flights
Seattle to Sydney flights
Reagan-National to Sydney flights
Baltimore to Sydney flights
Seattle to Auckland flights
Hobby to Sydney flights
San Francisco to Nadi flights
Dallas/Fort Worth to Auckland flights
Santa Ana to Sydney flights
Atlanta to Sydney flights
Newark to Melbourne flights
Newark to Auckland flights
San Francisco to Brisbane flights
Honolulu to Sydney flights
Dallas/Fort Worth to Avalon flights
Boston to Sydney flights
LaGuardia to Auckland flights
Seattle to Papeete flights
Midway to Sydney flights
LaGuardia to Melbourne flights
Hobby to Auckland flights
Dallas/Fort Worth to Nadi flights
Detroit to Sydney flights
Seattle to Tamuning flights
George Bush Intcntl to Sydney flights
Hobby to Melbourne flights
Los Angeles to Avalon flights
Baltimore to Melbourne flights

Top 9 airlines flying from Oregon to Australia

Discover the top 9 airlines that operate flights from Oregon 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 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$444Average$1,277FlexibilityNo cancel feeOn-time85%
DeltaCheapest$456Average$1,186FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$656Average$1,355FlexibilityNo 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%

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.