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$550+ Cheap flights from Portland (PDX) to Adelaide (ADL)

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 4/20. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — ADL
Apr 6 — Apr 131
Mon 4/6
Mon 4/13
1 adult, Economy
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Cheap flight deals from Portland to Adelaide

Cheapest flights from Portland to Adelaide
Explore the most affordable flight options available from Portland to Adelaide. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 7, 2026.

This Air Canada deal was found by Cheapflights users on 3/6. 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 4/247:05 pm
PDX
-
ADL
2 stops25h 55m
Multiple Airlines
Tue 4/285:15 pm
ADL
-
PDX
2 stops32h 25m
Multiple Airlines
Deal found 3/6$1,021
This Air Canada deal was found by Cheapflights users on 3/2. 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 4/177:05 pm
PDX
-
ADL
2 stops28h 20m
Multiple Airlines
Fri 4/247:35 pm
ADL
-
PDX
2 stops30h 05m
Multiple Airlines
Deal found 3/2$1,120
This BusinessClass deal was found by Cheapflights users on 3/2. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/167:00 am
PDX
-
ADL
2 stops23h 05m
Multiple Airlines
Thu 4/238:50 am
ADL
-
PDX
2 stops47h 53m
Multiple Airlines
Deal found 3/2$1,432
This Jetabroad deal was found by Cheapflights users on 3/2. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/169:50 am
PDX
-
ADL
3 stops33h 35m
Air New Zealand
Thu 4/237:45 pm
ADL
-
PDX
3 stops38h 52m
Air New Zealand
Deal found 3/2$1,499
This United Airlines deal was found by Cheapflights users on 3/2. 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 3/51:30 pm
PDX
-
ADL
1 stop25h 30m
United Airlines
Mon 3/92:15 pm
ADL
-
PDX
1 stop26h 19m
United Airlines
Deal found 3/2$1,510

Find flight deals from Portland to Adelaide

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to Adelaide (ADL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 7, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,021
(Air Canada)
Provider with most accurate pricing for Portland-Adelaide flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Adelaide flights.
Search Deals
From Portland to Adelaide
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to Adelaide 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 March 7, 2026.
Use the filters below to find and compare flights from Portland to Adelaide that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Fri 4/24

7:05 pm-1:30 pm

2 stops25h 55m

Adelaide

Tue 4/28

5:15 pm-9:10 am

2 stops32h 25m

$1,021

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Fri 4/17

7:05 pm-3:55 pm

2 stops28h 20m

Adelaide

Fri 4/24

7:35 pm-9:10 am

2 stops30h 05m

$1,120

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Thu 4/16

7:00 am-10:35 pm

2 stops23h 05m

Adelaide

Thu 4/23

8:50 am-4:13 pm

2 stops47h 53m

$1,432

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Thu 4/16

7:14 pm-11:05 am

2 stops23h 21m

Adelaide

Thu 4/23

7:45 pm-6:07 pm

3 stops38h 52m

$1,554
Cheapest one-way
Quickest one-way

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Mon 4/20

7:05 pm-1:30 pm

2 stops25h 55m

$550

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/6

Sorted by cheapest first
  • Most accurate provider: When it comes to deals on Portland-Adelaide flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-Adelaide flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland-Adelaide flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland-Adelaide flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland-Adelaide flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Portland to Adelaide

Have a flexible travel schedule? Discover the best time to fly to Adelaide 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.

Related info for your journey

Find useful and relevant information for your journey from Portland to Adelaide. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from Portland to Adelaide that include hotel bookings?

    Yes. In addition to deals on Portland to Adelaide flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to Adelaide?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Adelaide.

  • Can I find deals for business class flights from Portland to Adelaide?

    Yes. Cheapflights offers flight deals from Portland to Adelaide by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Traveling to a place near Adelaide?

Book flights to Adelaide if you plan to visit one of these locations
Glenelg

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