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$405+ 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 3/28. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SYD
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
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Cheap 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 December 15, 2025.

This United Airlines deal was found by Cheapflights users on 12/13. 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 12/157:43 pmPDX - BNE
1 stop17h 47mUnited Airlines
Wed 12/2411:40 amBNE - PDX
1 stop21h 06mUnited Airlines
Deal found 12/13$869
This Delta deal was found by Cheapflights users on 12/14. 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.
Mon 12/158:10 pmPDX - BNE
1 stop18h 10mDelta
Wed 12/2411:05 amBNE - PDX
1 stop19h 30mDelta
Deal found 12/14$964
This Qantas Airways deal was found by Cheapflights users on 12/12. 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.
Fri 12/125:41 pmPDX - BNE
1 stop18h 04mQantas Airways
Tue 12/3012:10 pmBNE - PDX
1 stop23h 01mQantas Airways
Deal found 12/12$970
This Qantas Airways deal was found by Cheapflights users on 12/13. 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.
Mon 12/294:26 pmPDX - SYD
1 stop19h 59mQantas Airways
Tue 1/137:15 pmSYD - PDX
2 stops37h 20mQantas Airways
Deal found 12/13$1,013
This United Airlines deal was found by Cheapflights users on 12/13. 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.
Sat 12/134:02 pmPDX - MEL
2 stops46h 28mUnited Airlines
Mon 12/291:00 pmMEL - PDX
1 stop24h 48mUnited Airlines
Deal found 12/13$1,035
This United Airlines deal was found by Cheapflights users on 12/13. 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.
Fri 12/267:45 pmPDX - BNE
1 stop17h 45mUnited Airlines
Sun 1/1111:40 amBNE - PDX
1 stop18h 54mUnited Airlines
Deal found 12/13$1,144
This United Airlines deal was found by Cheapflights users on 12/12. 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.
Fri 12/1211:59 pmPDX - BNE
2 stops37h 31mUnited Airlines
Tue 12/3011:40 amBNE - PDX
1 stop21h 06mUnited Airlines
Deal found 12/12$1,148
This Air Canada deal was found by Cheapflights users on 12/13. 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.
Sat 12/273:15 pmPDX - SYD
1 stop23h 20mAir Canada
Wed 3/48:30 amSYD - PDX
2 stops19h 45mAir Canada
Deal found 12/13$1,224
This oojo deal was found by Cheapflights users on 12/15. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/276:20 amPDX - SYD
1 stop31h 40mQantas Airways
Wed 3/48:30 amSYD - PDX
2 stops23h 55mQantas Airways
Deal found 12/15$1,254
This Qantas Airways deal was found by Cheapflights users on 12/14. 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.
Mon 12/294:26 pmPDX - SYD
1 stop19h 59mMultiple Airlines
Tue 1/135:45 pmSYD - PDX
1 stop21h 49mMultiple Airlines
Deal found 12/14$1,256
This Delta deal was found by Cheapflights users on 12/13. 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.
Fri 12/269:19 amPDX - BNE
2 stops29h 01mDelta
Sun 1/1110:40 amBNE - PDX
2 stops28h 19mDelta
Deal found 12/13$1,266
This Qantas Airways deal was found by Cheapflights users on 12/13. 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.
Sun 12/284:26 pmPDX - BNE
1 stop19h 19mQantas Airways
Tue 12/3012:10 pmBNE - PDX
1 stop23h 01mQantas Airways
Deal found 12/13$1,270

Find flight deals from Oregon to Australia

Keep the following information in mind while searching for Oregon to Australia flight deals. Data was last updated December 15, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$796
(Air Canada)

One-way from

$405
(Travelocity)

Popular in

December

Cheapest in

September

Average price

$1,781
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. 13% potential increase in price ($188 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($56 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 15, 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

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Thu 3/5

3:15 pm-8:45 am

1 stop23h 30m

Brisbane

Thu 3/19

9:45 am-9:15 am

1 stop16h 30m

$796

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Tue 1/20

7:00 pm-8:45 am

1 stop19h 45m

Brisbane

Sat 1/31

10:45 am-6:30 pm

1 stop25h 45m

$834

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Sat 2/21

6:40 am-5:00 am

1 stop28h 20m

Brisbane

Sun 3/1

5:10 pm-5:19 pm

1 stop18h 09m

$846

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Wed 3/11

5:42 pm-5:00 am

1 stop18h 18m

Brisbane

Tue 3/17

8:40 am-11:30 pm

1 stop31h 50m

$861

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Sun 2/22

1:40 pm-7:30 am

1 stop23h 50m

Brisbane

Tue 3/24

10:40 am-2:59 pm

1 stop21h 19m

$869

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Sun 3/15

3:40 pm-6:30 am

1 stop21h 50m

Brisbane

Wed 3/25

10:40 am-6:47 pm

1 stop25h 07m

$869

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Thu 2/26

3:50 pm-7:30 am

1 stop21h 40m

Brisbane

Sun 3/22

10:40 am-6:47 pm

1 stop25h 07m

$869

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Mon 2/23

3:50 pm-7:30 am

1 stop21h 40m

Brisbane

Mon 3/23

10:40 am-6:48 pm

1 stop25h 08m

$869

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Tue 2/24

7:57 pm-7:30 am

1 stop17h 33m

Brisbane

Thu 3/26

10:40 am-2:59 pm

1 stop21h 19m

$869

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Wed 2/18

1:40 pm-7:30 am

1 stop23h 50m

Brisbane

Tue 3/17

10:40 am-2:59 pm

1 stop21h 19m

$869

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/13

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, February is the cheapest month in which you can book a flight from Oregon to Australia (average of $504). Flying from Oregon to Australia in April is currently the most expensive (average of $932). 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 December 15, 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 10% 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 $796, Air Canada can have you in Australia from Oregon in 23h 30m. Oregon and Australia are separated by a distance of 7282 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 $424. Users have also found prices from $428 and $457 on Qantas Airways and Air Canada, 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 $504). Flying from Oregon to Australia in April is currently the most expensive (average of $932). 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 7 airlines flying from Oregon to Australia

Discover the top 7 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 December 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$502Average$1,070FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$550Average$1,169FlexibilityNo cancel feeOn-time85%
Qantas AirwaysCheapest$757Average$1,479FlexibilityNo cancel feeOn-time74%
Air CanadaCheapest$840Average$1,154FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$871Average$1,164FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$952Average$974FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$999Average$1,181FlexibilityNo cancel feeOn-time75%

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