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$406+ 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 2/15. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SYD
Feb 7 — Feb 141
Sat 2/7
Sat 2/14
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 January 8, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$797
(Air Canada)

One-way from

$406
(Priceline)

Popular in

December

Cheapest in

June

Average price

$1,162
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 Portland to Australia
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One-way flight from Portland to Australia
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($181 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($55 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 January 8, 2026.

This Air Canada deal was found by Cheapflights users on 1/7. 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.
Thu 3/57:05 pmPDX - BNE
1 stop19h 40mAir Canada
Thu 3/199:45 amBNE - PDX
1 stop21h 55mAir Canada
Deal found 1/7$797
This Air Canada deal was found by Cheapflights users on 1/6. 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 2/207:05 pmPDX - BNE
1 stop19h 40mAir Canada
Fri 2/2710:45 amBNE - PDX
1 stop25h 45mAir Canada
Deal found 1/6$798
This Air Canada deal was found by Cheapflights users on 1/7. 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.
Thu 3/57:05 pmPDX - BNE
2 stops24h 20mMultiple Airlines
Thu 3/199:45 amBNE - PDX
1 stop25h 45mMultiple Airlines
Deal found 1/7$814
This FlightHub deal was found by Cheapflights users on 1/6. 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.
Sat 2/217:05 pmPDX - BNE
2 stops26h 25mMultiple Airlines
Sun 3/110:45 amBNE - PDX
1 stop21h 55mMultiple Airlines
Deal found 1/6$815
This Air Canada deal was found by Cheapflights users on 1/7. 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 2/217:05 pmPDX - BNE
2 stops26h 25mAir Canada
Sun 3/110:45 amBNE - PDX
1 stop21h 55mAir Canada
Deal found 1/7$820
This Air Canada deal was found by Cheapflights users on 1/7. 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 1/317:00 pmPDX - BNE
2 stops27h 55mAir Canada
Sat 2/1410:45 amBNE - PDX
1 stop21h 55mAir Canada
Deal found 1/7$831
This FlightHub deal was found by Cheapflights users on 1/5. 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.
Wed 3/183:15 pmPDX - BNE
1 stop23h 30mAir Canada
Wed 4/110:00 amBNE - PDX
1 stop25h 30mAir Canada
Deal found 1/5$835
This Air Canada deal was found by Cheapflights users on 1/8. 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 2/83:15 pmPDX - BNE
1 stop23h 30mAir Canada
Thu 2/1210:45 amBNE - PDX
1 stop25h 45mAir Canada
Deal found 1/8$836
This Air Canada deal was found by Cheapflights users on 1/6. 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 3/47:05 pmPDX - BNE
2 stops24h 20mMultiple Airlines
Wed 3/119:45 amBNE - PDX
1 stop16h 30mMultiple Airlines
Deal found 1/6$852
This Air Canada deal was found by Cheapflights users on 1/8. 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 2/87:05 pmPDX - BNE
1 stop19h 40mMultiple Airlines
Thu 2/126:10 amBNE - PDX
2 stops21h 05mMultiple Airlines
Deal found 1/8$853
This oojo deal was found by Cheapflights users on 1/6. 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 2/146:25 amPDX - SYD
1 stop31h 35mQantas Airways
Thu 2/197:05 amSYD - PDX
2 stops29h 08mQantas Airways
Deal found 1/6$939
This Air Canada deal was found by Cheapflights users on 1/8. 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 5/87:45 pmPDX - MEL
2 stops22h 40mMultiple Airlines
Thu 5/216:00 amMEL - PDX
2 stops20h 30mMultiple Airlines
Deal found 1/8$950

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 January 8, 2026.
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

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Thu 2/19

3:15 pm-8:45 am

1 stop23h 30m

Brisbane

Thu 3/12

9:45 am-9:15 am

1 stop16h 30m

$797

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Thu 3/5

7:05 pm-8:45 am

1 stop19h 40m

Brisbane

Thu 3/19

9:45 am-9:15 am

1 stop16h 30m

$797

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Thu 2/19

7:05 pm-2:20 pm

2 stops25h 15m

Brisbane

Thu 3/12

9:45 am-6:30 pm

1 stop25h 45m

$814

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Wed 3/18

3:15 pm-7:45 am

1 stop23h 30m

Brisbane

Wed 4/1

10:00 am-6:30 pm

1 stop25h 30m

$835

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Wed 3/4

7:05 pm-8:45 am

1 stop19h 40m

Brisbane

Wed 3/11

9:45 am-6:30 pm

1 stop25h 45m

$836

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Thu 3/5

7:05 pm-1:25 pm

2 stops24h 20m

Brisbane

Thu 3/19

6:05 am-9:15 am

2 stops20h 10m

$837

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Wed 3/18

3:15 pm-11:30 am

2 stops27h 15m

Brisbane

Wed 4/1

10:00 am-6:30 pm

1 stop25h 30m

$853

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Sun 2/8

9:50 am-8:45 am

1 stop28h 55m

Brisbane

Thu 2/12

10:45 am-6:30 pm

1 stop25h 45m

$858

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Sat 2/21

7:05 pm-1:30 pm

2 stops24h 25m

Brisbane

Sun 3/1

6:30 pm-9:15 am

2 stops32h 45m

$878

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Sun 2/22

3:15 pm-1:30 pm

2 stops28h 15m

Brisbane

Sun 3/1

6:30 pm-9:15 am

2 stops32h 45m

$882

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/6

Showing 1-10 of 58 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 $504). Flying from Portland to Australia in April is currently the most expensive (average of $929). 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.

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 January 8, 2026.
See what other customers who have flown with Alaska Airlines, Delta, and Qantas Airways 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.
Alaska Airlines
8.0
Very good
11,661 reviews

Crew

8.5

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Alaska Airlines
8.0
Very good
11,661 reviews
Alaska Airlines
8.0
Very good
11,661 reviews

Crew

8.5

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Delta
7.9
Good
8,025 reviews
Alaska Airlines
8.0
Very good
11,661 reviews

Crew

8.5

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Qantas Airways
7.5
Good
967 reviews
Alaska Airlines
8.0
Very good
11,661 reviews

Crew

8.5

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
United Airlines
7.4
Good
9,139 reviews
Alaska Airlines
8.0
Very good
11,661 reviews

Crew

8.5

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Air Canada
7.1
Good
10,603 reviews
Alaska Airlines
8.0
Very good
11,661 reviews

Crew

8.5

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

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.

  • How long is the flight from Portland to Australia?

    For as low as $955, Air Canada can have you in Australia from Portland in 22h 04m. Airlines will cover a distance of 8111 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    To fly one-way, consider booking your trip with Air Canada, which is currently one of the cheapest options available, starting at $405. United Airlines flights start at $424 while deals on Qantas Airways start at $428 one-way.

  • What are the most popular routes from Portland to Australia?

    The most popular flight routes from Portland to Australia are Portland - Melbourne, Portland - Sydney Kingsford Smith 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 $504). Flying from Portland to Australia in April is currently the most expensive (average of $929). 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.

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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 7 airlines flying from Portland to Australia

Discover the top 7 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 January 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$502Average$1,075FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$550Average$1,169FlexibilityNo cancel feeOn-time85%
Qantas AirwaysCheapest$757Average$1,445FlexibilityNo cancel feeOn-time74%
Air CanadaCheapest$840Average$1,131FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$871Average$1,121FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$952Average$974FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$999Average$1,188FlexibilityNo cancel feeOn-time75%

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