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$660+ 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
Dec 6 — Dec 131
Sat 12/6
Sat 12/13
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 November 6, 2025.

This Justfly.com deal was found by Cheapflights users on 11/6. 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 Justfly.com 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 1/136:05 amADL - PDX
2 stops29h 14mQantas Airways
Deal found 11/6$1,289
This United Airlines deal was found by Cheapflights users on 11/6. 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 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 40mUnited Airlines
Tue 1/136:00 amADL - PDX
3 stops31h 11mUnited Airlines
Deal found 11/6$1,866
This oojo deal was found by Cheapflights users on 11/6. 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 12/2712:49 amPDX - ADL
2 stops45h 46mQatar Airways
Tue 1/1310:00 pmADL - PDX
2 stops37h 04mQatar Airways
Deal found 11/6$3,308

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 November 6, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$1,170
(FlightHub)

One-way from

$660
(FlightHub)
Provider with most accurate pricing for Portland-Adelaide flight deals.
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Provider most trusted by Cheapflights users for Portland-Adelaide flights.
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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 November 6, 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-3:45 pm

2 stops27h 25m

Adelaide

Sat 1/31

7:50 am-1:41 pm

2 stops24h 21m

$1,170

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Sun 12/28

6:20 am-5:45 pm

2 stops40h 55m

Adelaide

Tue 1/13

7:00 pm-1:41 pm

2 stops61h 11m

$1,492

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Sun 12/28

11:59 pm-9:30 am

2 stops39h 01m

Adelaide

Tue 1/13

7:15 am-6:41 pm

2 stops29h 56m

$1,513

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Sun 1/11

11:59 pm-9:30 am

2 stops39h 01m

Adelaide

Sat 1/31

2:55 pm-6:48 pm

1 stop22h 23m

$1,666

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Fri 12/19

7:00 am-2:05 pm

2 stops36h 35m

Adelaide

Fri 12/26

2:45 pm-5:25 am

2 stops33h 10m

$3,040

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Fri 12/19

5:41 pm-10:55 am

3 stops46h 44m

Adelaide

Fri 12/26

5:10 pm-5:11 pm

3 stops42h 31m

$3,076

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Sun 12/28

6:20 am-5:45 pm

2 stops40h 55m

$660

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Sun 12/28

4:26 pm-1:40 pm

3 stops26h 44m

$3,359

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/5

  • 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 November 6, 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 25m. Qantas Airways provides one of the quickest options available for as low as $1,170. 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

Traveling to a place near Adelaide?

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Glenelg

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