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$643+ 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 12/28. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — ADL
Nov 19 — Nov 261
Wed 11/19
Wed 11/26
1 adult, Economy
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Find 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 October 20, 2025.

This CheapOair deal was found by Cheapflights users on 10/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/286:20 amPDX - ADL
2 stops40h 55mQantas Airways
Tue 1/134:30 pmADL - PDX
2 stops39h 41mQantas Airways
Deal found 10/20$1,260
This United Airlines deal was found by Cheapflights users on 10/20. 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.
Sun 12/287:45 pmPDX - ADL
2 stops23h 55mUnited Airlines
Tue 1/136:00 amADL - PDX
3 stops31h 11mUnited Airlines
Deal found 10/20$1,684
This oojo deal was found by Cheapflights users on 10/19. 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 12/2712:49 amPDX - ADL
2 stops45h 46mQatar Airways
Tue 1/1310:00 pmADL - PDX
2 stops37h 04mQatar Airways
Deal found 10/19$2,754

Cheap 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 October 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,210
(oojo)

One-way from

$643
(oojo)
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
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One-way flight from Portland to Adelaide
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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 October 20, 2025.
Use the filters below to find and compare flights from Portland to Adelaide that are best for you.

Fly from

Portland

Fly to

Adelaide

Route

Depart

Return

Price

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Sun 1/11

5:50 pm-6:45 pm

2 stops30h 25m

Adelaide

Sat 1/31

7:50 am-8:34 pm

2 stops31h 14m

$1,210

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Sun 12/28

6:20 am-1:45 pm

2 stops36h 55m

Adelaide

Tue 1/13

6:30 pm-4:49 pm

2 stops40h 49m

$1,459

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Sun 12/28

3:54 pm-2:10 pm

2 stops27h 46m

Adelaide

Tue 1/13

6:00 am-6:41 pm

3 stops31h 11m

$1,684

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Sun 1/11

12:59 pm-9:30 am

2 stops50h 01m

Adelaide

Sat 1/31

2:55 pm-2:46 pm

1 stop18h 21m

$1,689

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Sat 12/27

12:49 am-5:05 pm

2 stops45h 46m

Adelaide

Tue 1/13

10:00 pm-4:34 pm

2 stops37h 04m

$2,754

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Sun 12/28

6:20 am-1:40 pm

2 stops36h 50m

$643

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Sun 12/28

11:55 pm-9:30 am

2 stops39h 05m

$738

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Sun 12/28

4:26 pm-1:40 pm

3 stops26h 44m

$2,085

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/19

  • 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.

Cheapflights Insights

Everything you need to know about your flight from Portland to Adelaide

What is the cheapest time of day to fly from PDX to ADL?

Find hourly flight availability from Portland to Adelaide. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 20, 2025.

One of the essential ways to save on airfare from Portland to Adelaide is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight in the afternoon could potentially save you up to 19% on airfare.

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.

  • How long is the flight from Portland to Adelaide?

    A quick flight from Portland to Adelaide can take about 27h 46m. Qantas Airways provides one of the quickest options available for as low as $1,684. The distance from Portland to Adelaide is about 8275 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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.

See more FAQs

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Glenelg

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