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$423+ 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 3/15. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SYD
feb. 14 — feb. 211
sáb. 2/14
sáb. 2/21
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 enero 15, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$787
(Air Canada)

One-way from

$423
(Trip.com)

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
Search Deals
One-way flight from Portland to Australia
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($178 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 enero 15, 2026.

This Air Canada deal was found by Cheapflights users on 1/14. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 2/287:05 pm
PDX
-
BNE
1 stop19h 40m
Air Canada
sáb. 3/710:45 am
BNE
-
PDX
1 stop21h 55m
Air Canada
Deal found 1/14$787
This Priceline deal was found by Cheapflights users on 1/13. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 2/87:05 pm
PDX
-
BNE
1 stop19h 40m
Air Canada
jue. 2/1210:45 am
BNE
-
PDX
1 stop21h 55m
Air Canada
Deal found 1/13$797
This Air Canada deal was found by Cheapflights users on 1/12. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 2/277:05 pm
PDX
-
BNE
1 stop19h 40m
Air Canada
vie. 3/610:45 am
BNE
-
PDX
1 stop21h 55m
Air Canada
Deal found 1/12$798
This Air Canada deal was found by Cheapflights users on 1/13. 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.
jue. 3/57:05 pm
PDX
-
BNE
2 stops24h 20m
Multiple Airlines
jue. 3/199:45 am
BNE
-
PDX
1 stop21h 55m
Multiple Airlines
Deal found 1/13$814
This Air Canada deal was found by Cheapflights users on 1/15. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 2/219:50 am
PDX
-
BNE
1 stop28h 55m
Air Canada
dom. 3/110:45 am
BNE
-
PDX
1 stop16h 30m
Air Canada
Deal found 1/15$825
This Air Canada deal was found by Cheapflights users on 1/14. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 2/287:05 pm
PDX
-
BNE
2 stops23h 05m
Multiple Airlines
sáb. 3/710:45 am
BNE
-
PDX
1 stop21h 55m
Multiple Airlines
Deal found 1/14$828
This Orbitz deal was found by Cheapflights users on 1/15. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 2/77:05 pm
PDX
-
BNE
2 stops28h 05m
Multiple Airlines
sáb. 3/710:45 am
BNE
-
PDX
1 stop21h 55m
Multiple Airlines
Deal found 1/15$838
This Air Canada deal was found by Cheapflights users on 1/14. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 2/117:05 pm
PDX
-
BNE
1 stop19h 40m
Multiple Airlines
mié. 2/186:10 am
BNE
-
PDX
2 stops21h 05m
Multiple Airlines
Deal found 1/14$852
This oojo deal was found by Cheapflights users on 1/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 1/283:22 pm
PDX
-
SYD
1 stop22h 38m
Qantas Airways
dom. 2/87:05 am
SYD
-
PDX
2 stops29h 47m
Qantas Airways
Deal found 1/13$919
This oojo deal was found by Cheapflights users on 1/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 1/227:24 am
PDX
-
SYD
1 stop29h 01m
Qantas Airways
vie. 2/67:05 am
SYD
-
PDX
2 stops28h 44m
Qantas Airways
Deal found 1/13$926
This oojo deal was found by Cheapflights users on 1/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 1/283:22 pm
PDX
-
SYD
1 stop22h 38m
Qantas Airways
dom. 2/157:05 am
SYD
-
PDX
2 stops29h 08m
Qantas Airways
Deal found 1/14$940
This American Airlines deal was found by Cheapflights users on 1/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/111:40 pm
PDX
-
MEL
1 stop34h 20m
American Airlines
dom. 3/812:00 pm
MEL
-
PDX
1 stop23h 08m
American Airlines
Deal found 1/14$945

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 enero 15, 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

jue. 3/5

9:50 am-8:45 am

1 stop28h 55m

Brisbane

jue. 3/19

9:45 am-6:30 pm

1 stop25h 45m

$797

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

vie. 2/27

3:15 pm-8:45 am

1 stop23h 30m

Brisbane

vie. 3/6

6:10 am-9:15 am

2 stops21h 05m

$814

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

sáb. 2/7

7:05 pm-5:10 pm

2 stops28h 05m

Brisbane

sáb. 3/7

10:45 am-2:40 pm

1 stop21h 55m

$838

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

sáb. 2/21

9:50 am-8:45 am

1 stop28h 55m

Brisbane

dom. 3/1

10:45 am-6:30 pm

1 stop25h 45m

$845

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

vie. 2/20

7:05 pm-8:45 am

1 stop19h 40m

Brisbane

lun. 2/23

12:05 pm-9:15 am

2 stops39h 10m

$879

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

dom. 2/8

7:05 pm-8:45 am

1 stop19h 40m

Brisbane

jue. 2/12

6:05 am-9:15 am

2 stops21h 10m

$881

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

sáb. 2/21

7:05 pm-4:55 pm

2 stops27h 50m

Brisbane

dom. 3/1

6:30 pm-9:15 am

2 stops32h 45m

$893

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

mié. 5/13

7:45 pm-7:05 am

1 stop18h 20m

Brisbane

mié. 5/27

10:00 am-7:05 pm

1 stop26h 05m

$906

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

dom. 5/3

3:25 pm-7:05 am

1 stop22h 40m

Brisbane

dom. 5/17

10:00 am-7:05 pm

1 stop26h 05m

$916

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

dom. 4/5

3:15 pm-7:05 am

1 stop22h 50m

Brisbane

dom. 4/19

8:40 pm-9:15 am

2 stops29h 35m

$934

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/15

Showing 1-10 of 60 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 $930). 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 enero 15, 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
11,719 reviews

Overall

8.0

Food

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Alaska Airlines
8.0
Very good
11,719 reviews
Alaska Airlines
8.0
Very good
11,719 reviews

Overall

8.0

Food

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Delta
7.9
Good
8,049 reviews
Alaska Airlines
8.0
Very good
11,719 reviews

Overall

8.0

Food

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Qantas Airways
7.5
Good
971 reviews
Alaska Airlines
8.0
Very good
11,719 reviews

Overall

8.0

Food

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
United Airlines
7.4
Good
9,164 reviews
Alaska Airlines
8.0
Very good
11,719 reviews

Overall

8.0

Food

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Air Canada
7.1
Good
10,622 reviews
Alaska Airlines
8.0
Very good
11,719 reviews

Overall

8.0

Food

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading

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 $1,163, Air Canada can have you in Australia from Portland in 17h 55m. Airlines will cover a distance of 7674 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 - Sydney Kingsford Smith, Portland - Melbourne 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 $930). 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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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 enero 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$497Average$1,066FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$550Average$1,158FlexibilityNo cancel feeOn-time85%
Qantas AirwaysCheapest$757Average$1,446FlexibilityNo cancel feeOn-time74%
Air CanadaCheapest$840Average$1,135FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$871Average$1,129FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$952Average$974FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$999Average$1,208FlexibilityNo cancel feeOn-time75%

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