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$461+ 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 3/28. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SYD
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap 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 29, 2026.

This Expedia deal was found by Cheapflights users on 1/29. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/247:05 pm
PDX
-
MEL
2 stops24h 10m
Multiple Airlines
Sat 3/147:10 am
MEL
-
PDX
2 stops20h 05m
Multiple Airlines
Deal found 1/29$818
This Trip.com deal was found by Cheapflights users on 1/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/139:53 am
PDX
-
BNE
2 stops31h 32m
Multiple Airlines
Fri 3/2011:50 am
BNE
-
PDX
2 stops25h 58m
Multiple Airlines
Deal found 1/27$833
This Air Canada deal was found by Cheapflights users on 1/27. 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.
Thu 3/53:15 pm
PDX
-
BNE
1 stop23h 30m
Air Canada
Thu 3/199:45 am
BNE
-
PDX
1 stop25h 45m
Air Canada
Deal found 1/27$866
This Air Canada deal was found by Cheapflights users on 1/28. 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.
Mon 2/239:50 am
PDX
-
BNE
1 stop28h 55m
Air Canada
Wed 4/2910:00 am
BNE
-
PDX
1 stop21h 40m
Air Canada
Deal found 1/28$874
This FlightHub deal was found by Cheapflights users on 1/27. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/57:05 pm
PDX
-
BNE
2 stops24h 20m
Multiple Airlines
Thu 3/199:45 am
BNE
-
PDX
1 stop16h 30m
Multiple Airlines
Deal found 1/27$894
This Air Canada deal was found by Cheapflights users on 1/27. 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.
Sun 5/37:45 pm
PDX
-
BNE
1 stop18h 20m
Air Canada
Sun 5/1710:00 am
BNE
-
PDX
1 stop16h 30m
Air Canada
Deal found 1/27$909
This FlightHub deal was found by Cheapflights users on 1/27. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/37:45 pm
PDX
-
BNE
2 stops22h 45m
Multiple Airlines
Sun 5/1710:00 am
BNE
-
PDX
1 stop16h 30m
Multiple Airlines
Deal found 1/27$938
This oojo deal was found by Cheapflights users on 1/27. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/245:39 pm
PDX
-
MEL
1 stop20h 51m
Multiple Airlines
Tue 3/312:00 pm
MEL
-
PDX
1 stop20h 25m
Multiple Airlines
Deal found 1/27$953
This oojo deal was found by Cheapflights users on 1/27. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/102:30 pm
PDX
-
BNE
1 stop21h 30m
Multiple Airlines
Sun 9/278:35 pm
BNE
-
PDX
1 stop20h 19m
Multiple Airlines
Deal found 1/27$956
This FlightHub deal was found by Cheapflights users on 1/27. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/242:30 pm
PDX
-
MEL
1 stop24h 00m
Qantas Airways
Sat 3/712:00 pm
MEL
-
PDX
1 stop24h 13m
Qantas Airways
Deal found 1/27$956
This Air Canada deal was found by Cheapflights users on 1/27. 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.
Sun 4/57:05 pm
PDX
-
MEL
2 stops23h 20m
Multiple Airlines
Sat 4/188:50 pm
MEL
-
PDX
2 stops29h 25m
Multiple Airlines
Deal found 1/27$958
This Air Canada deal was found by Cheapflights users on 1/28. 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.
Mon 3/97:05 pm
PDX
-
ADL
2 stops24h 05m
Multiple Airlines
Mon 3/166:10 am
ADL
-
PDX
2 stops29h 50m
Multiple Airlines
Deal found 1/28$959

Find 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 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$818
(Expedia)

One-way from

$461
(Kiwi.com)

Popular in

December

Cheapest in

June

Average price

$1,161
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 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 ($186 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 January 2026
Search Deals

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 29, 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

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Tue 2/24

7:05 pm-2:15 pm

2 stops24h 10m

Melbourne

Sat 3/14

7:10 am-9:15 am

2 stops20h 05m

$818

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Fri 3/13

9:53 am-10:25 am

2 stops31h 32m

Brisbane

Fri 3/20

11:50 am-8:48 pm

2 stops25h 58m

$833

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Sun 3/8

5:39 pm-9:30 am

1 stop21h 51m

Melbourne

Mon 3/16

12:00 pm-8:53 pm

1 stop26h 53m

$836

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Thu 3/5

3:15 pm-8:45 am

1 stop23h 30m

Brisbane

Thu 3/19

9:45 am-6:30 pm

1 stop25h 45m

$866

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Wed 2/25

7:05 pm-8:45 am

1 stop19h 40m

Brisbane

Wed 3/4

10:45 am-9:15 am

1 stop16h 30m

$866

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Thu 3/5

7:05 pm-1:25 pm

2 stops24h 20m

Brisbane

Thu 3/19

9:45 am-6:30 pm

1 stop25h 45m

$894

PortlandBrisbane

PDX - BNE

PDXBNE

Portland

Sat 3/14

3:15 pm-4:55 pm

2 stops32h 40m

Brisbane

Sat 3/21

9:45 am-6:30 pm

1 stop25h 45m

$934

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Tue 2/24

5:39 pm-9:30 am

1 stop20h 51m

Melbourne

Tue 3/3

12:00 pm-1:25 pm

1 stop20h 25m

$953

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Tue 2/24

2:30 pm-9:30 am

1 stop24h 00m

Melbourne

Sat 3/7

12:00 pm-5:13 pm

1 stop24h 13m

$956

PortlandMelbourne

PDX - MEL

PDXMEL

Portland

Sun 4/5

5:38 pm-6:45 am

1 stop20h 07m

Melbourne

Sat 4/18

9:45 am-12:39 pm

1 stop19h 54m

$958

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/29

Showing 1-10 of 40 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 $933). 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 29, 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
11,808 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Food

7.1

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
11,808 reviews
Alaska Airlines
8.0
Very good
11,808 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Food

7.1

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
8,127 reviews
Alaska Airlines
8.0
Very good
11,808 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Food

7.1

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
981 reviews
Alaska Airlines
8.0
Very good
11,808 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Food

7.1

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
9,215 reviews
Alaska Airlines
8.0
Very good
11,808 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Food

7.1

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
10,667 reviews
Alaska Airlines
8.0
Very good
11,808 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Food

7.1

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 $1,116, Air Canada can have you in Australia from Portland in 20h 01m. Airlines will cover a distance of 8275 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 $933). 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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$497Average$1,069FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$550Average$1,157FlexibilityNo cancel feeOn-time85%
Qantas AirwaysCheapest$757Average$1,403FlexibilityNo cancel feeOn-time74%
Air CanadaCheapest$840Average$1,131FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$855Average$1,058FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$871Average$1,144FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$999Average$1,183FlexibilityNo cancel feeOn-time75%

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