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$398+ 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 3/8. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SYD
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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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 October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$867
(Air Canada)

One-way from

$398
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$1,137
Provider with most accurate pricing for Portland-Sydney Kingsford Smith flight deals.
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Provider most trusted by Cheapflights users for Portland-Sydney Kingsford Smith flights.
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From Oregon to Australia
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One-way flight from Oregon to Australia
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Highest demand for flights based on searches. 7% potential increase in price ($95 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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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 October 30, 2025.

This United Airlines deal was found by Cheapflights users on 10/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/301:11 pmEUG - SYD
2 stops26h 04mUnited Airlines
Thu 11/611:50 amSYD - EUG
2 stops28h 48mUnited Airlines
Deal found 10/28$869
This Air Canada deal was found by Cheapflights users on 10/29. 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 11/267:00 pmPDX - BNE
1 stop19h 45mAir Canada
Wed 12/310:45 amBNE - PDX
1 stop25h 45mAir Canada
Deal found 10/29$871
This United Airlines deal was found by Cheapflights users on 10/29. 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.
Tue 12/306:41 amEUG - SYD
1 stop28h 39mUnited Airlines
Sat 1/1712:10 pmSYD - EUG
1 stop19h 04mUnited Airlines
Deal found 10/29$897
This United Airlines deal was found by Cheapflights users on 10/29. 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.
Tue 12/305:00 amEUG - SYD
2 stops33h 05mUnited Airlines
Fri 1/162:00 pmSYD - EUG
2 stops26h 10mUnited Airlines
Deal found 10/29$902
This United Airlines deal was found by Cheapflights users on 10/30. 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.
Tue 12/305:00 amEUG - SYD
2 stops33h 05mUnited Airlines
Thu 1/152:00 pmSYD - EUG
2 stops26h 10mUnited Airlines
Deal found 10/30$903
This United Airlines deal was found by Cheapflights users on 10/29. 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 12/296:37 pmEUG - SYD
1 stop40h 43mUnited Airlines
Sat 1/1712:10 pmSYD - EUG
1 stop19h 04mUnited Airlines
Deal found 10/29$904
This United Airlines deal was found by Cheapflights users on 10/30. 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 12/296:37 pmEUG - SYD
1 stop40h 43mUnited Airlines
Fri 1/1612:10 pmSYD - EUG
2 stops28h 00mUnited Airlines
Deal found 10/30$909
This United Airlines deal was found by Cheapflights users on 10/29. 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.
Tue 12/302:05 pmEUG - SYD
1 stop21h 15mUnited Airlines
Wed 1/142:00 pmSYD - EUG
1 stop17h 23mUnited Airlines
Deal found 10/29$917
This United Airlines deal was found by Cheapflights users on 10/30. 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.
Tue 12/302:05 pmEUG - SYD
1 stop24h 10mUnited Airlines
Tue 1/2012:10 pmSYD - EUG
1 stop19h 04mUnited Airlines
Deal found 10/30$918
This United Airlines deal was found by Cheapflights users on 10/29. 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.
Tue 12/305:00 amEUG - SYD
2 stops30h 20mUnited Airlines
Tue 1/1311:20 amSYD - EUG
2 stops28h 58mUnited Airlines
Deal found 10/29$922
This United Airlines deal was found by Cheapflights users on 10/30. 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.
Tue 12/301:10 pmEUG - SYD
2 stops24h 55mUnited Airlines
Sun 1/182:00 pmSYD - EUG
1 stop17h 14mUnited Airlines
Deal found 10/30$923
This American Airlines deal was found by Cheapflights users on 10/30. 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 10/302:45 pmPDX - BNE
1 stop21h 15mAmerican Airlines
Thu 11/67:40 pmBNE - PDX
1 stop20h 45mAmerican Airlines
Deal found 10/30$955

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 October 30, 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

EugeneSydney

EUG - SYD

EUGSYD

Eugene

Thu 2/5

2:09 pm-6:20 am

1 stop21h 11m

Sydney Kingsford Smith

Fri 3/13

2:00 pm-10:53 pm

1 stop26h 53m

$877

EugeneSydney

EUG - SYD

EUGSYD

Eugene

Thu 2/5

2:09 pm-9:15 am

1 stop24h 06m

Sydney Kingsford Smith

Sat 3/7

12:10 pm-12:15 pm

1 stop19h 05m

$877

EugeneSydney

EUG - SYD

EUGSYD

Eugene

Sat 1/31

1:10 pm-9:05 am

2 stops24h 55m

Sydney Kingsford Smith

Fri 3/13

12:10 pm-12:15 pm

1 stop18h 05m

$882

EugeneSydney

EUG - SYD

EUGSYD

Eugene

Sat 1/31

1:10 pm-9:15 am

2 stops25h 05m

Sydney Kingsford Smith

Sat 3/7

12:10 pm-9:38 pm

2 stops28h 28m

$882

EugeneSydney

EUG - SYD

EUGSYD

Eugene

Fri 1/30

5:00 am-7:00 am

2 stops31h 00m

Sydney Kingsford Smith

Sat 3/7

12:10 pm-12:15 pm

1 stop19h 05m

$882

EugeneSydney

EUG - SYD

EUGSYD

Eugene

Thu 2/5

1:10 pm-9:05 am

2 stops24h 55m

Sydney Kingsford Smith

Thu 3/12

12:10 pm-12:15 pm

1 stop18h 05m

$882

EugeneSydney

EUG - SYD

EUGSYD

Eugene

Sat 1/31

2:09 pm-6:20 am

1 stop21h 11m

Sydney Kingsford Smith

Wed 3/11

12:10 pm-12:15 pm

1 stop18h 05m

$897

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Mon 2/9

3:15 pm-8:45 am

1 stop23h 30m

Brisbane

Mon 3/2

12:05 pm-9:15 am

2 stops39h 10m

$966

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Mon 3/9

9:50 am-11:30 am

2 stops32h 40m

Brisbane

Fri 3/27

9:45 am-9:15 am

1 stop16h 30m

$966

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Mon 3/16

7:00 pm-7:45 am

1 stop19h 45m

Brisbane

Fri 3/20

5:05 am-2:40 pm

2 stops26h 35m

$966

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/30

Showing 1-10 of 60 results
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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, December is the cheapest month in which you can book a flight from Oregon to Australia (average of $456). Flying from Oregon to Australia in July is currently the most expensive (average of $956). 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 October 30, 2025.

When flying from Oregon to Australia, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 13% versus a flight in the evening.

What is the cheapest day to fly from Oregon to Australia?

Use this chart to determine the cheapest time to fly round-trip from Oregon to Australia. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Oregon to Australia flight should consider departing on Sunday mornings when fares are most often at their lowest. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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.

  • How long is the flight from Oregon to Australia?

    For as low as $1,035, United Airlines can have you in Australia from Oregon in 20h 40m. Oregon and Australia are separated by a distance of 7674 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    For one-way options, check prices for United Airlines. According to our data, you can fly for as low as $426. Users have also found prices from $509 and $561 on Air Canada and Qantas Airways, 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, December is the cheapest month in which you can book a flight from Oregon to Australia (average of $456). Flying from Oregon to Australia in July is currently the most expensive (average of $956). 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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Top 8 airlines flying from Oregon to Australia

Discover the top 8 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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$456Average$1,117FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$550Average$1,161FlexibilityNo cancel feeOn-time85%
United AirlinesCheapest$656Average$1,224FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$840Average$1,214FlexibilityNo cancel feeOn-time67%
Qantas AirwaysCheapest$898Average$1,503FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$952Average$974FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$999Average$1,184FlexibilityNo cancel feeOn-time75%
Air New ZealandCheapest$1,141Average$1,383FlexibilityNo cancel feeOn-time78%

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