HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Adelaide

$1,102+ Cheap flights from Portland (PDX) to Adelaide (ADL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/9. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — ADL
Mar 7 — Mar 141
Sat 3/7
Sat 3/14
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Portland to Adelaide with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 February 5, 2026.

This United Airlines deal was found by Cheapflights users on 2/2. 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.
Mon 2/91:35 pm
PDX
-
ADL
1 stop25h 25m
United Airlines
Wed 3/112:15 pm
ADL
-
PDX
1 stop18h 14m
United Airlines
Deal found 2/2$1,102
This Qantas Airways deal was found by Cheapflights users on 2/2. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/102:57 pm
PDX
-
ADL
2 stops24h 23m
Qantas Airways
Tue 3/107:50 am
ADL
-
PDX
2 stops23h 05m
Qantas Airways
Deal found 2/2$1,117
This United Airlines deal was found by Cheapflights users on 2/2. 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.
Mon 2/97:51 pm
PDX
-
ADL
1 stop19h 09m
United Airlines
Mon 3/92:15 pm
ADL
-
PDX
1 stop18h 14m
United Airlines
Deal found 2/2$1,120
This oojo deal was found by Cheapflights users on 2/4. 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.
Mon 2/99:30 pm
PDX
-
ADL
2 stops44h 15m
Multiple Airlines
Thu 2/191:15 pm
ADL
-
PDX
2 stops21h 56m
Multiple Airlines
Deal found 2/4$1,126
This United Airlines deal was found by Cheapflights users on 2/2. 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 2/127:10 am
PDX
-
ADL
2 stops31h 50m
United Airlines
Wed 3/112:15 pm
ADL
-
PDX
1 stop26h 19m
United Airlines
Deal found 2/2$1,152
This United Airlines deal was found by Cheapflights users on 2/2. 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 2/125:35 am
PDX
-
ADL
1 stop33h 25m
United Airlines
Mon 3/92:15 pm
ADL
-
PDX
1 stop39h 48m
United Airlines
Deal found 2/2$1,159
This oojo deal was found by Cheapflights users on 2/3. 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 2/75:50 pm
PDX
-
ADL
2 stops25h 20m
Multiple Airlines
Mon 2/96:30 pm
ADL
-
PDX
2 stops37h 41m
Multiple Airlines
Deal found 2/3$1,166
This United Airlines deal was found by Cheapflights users on 2/2. 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.
Mon 2/97:51 pm
PDX
-
ADL
1 stop19h 09m
United Airlines
Sat 3/72:55 pm
ADL
-
PDX
1 stop18h 39m
United Airlines
Deal found 2/2$1,170
This United Airlines deal was found by Cheapflights users on 2/2. 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.
Fri 2/1311:59 pm
PDX
-
ADL
2 stops39h 01m
United Airlines
Mon 3/92:15 pm
ADL
-
PDX
2 stops39h 06m
United Airlines
Deal found 2/2$1,175

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 February 5, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,692
(American Airlines)
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 February 5, 2026.
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

Mon 2/9

5:00 am-9:30 am

2 stops34h 00m

Adelaide

Wed 3/11

2:15 pm-2:59 pm

1 stop18h 14m

$1,102

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Mon 2/9

8:30 am-9:30 am

2 stops30h 30m

Adelaide

Mon 3/9

2:15 pm-9:54 am

2 stops37h 09m

$1,102

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Tue 2/10

2:57 pm-9:50 am

2 stops24h 23m

Adelaide

Tue 3/10

7:50 am-1:25 pm

2 stops23h 05m

$1,119

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Mon 2/9

9:30 pm-12:15 pm

2 stops44h 15m

Adelaide

Thu 2/19

1:15 pm-4:41 pm

2 stops21h 56m

$1,126

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Thu 2/12

7:10 am-9:30 am

2 stops31h 50m

Adelaide

Mon 3/9

2:15 pm-9:10 pm

2 stops24h 25m

$1,152

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Mon 2/9

10:47 am-9:30 am

2 stops28h 13m

Adelaide

Sat 3/7

2:55 pm-10:51 am

2 stops38h 26m

$1,152

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Wed 2/11

3:45 pm-9:30 am

2 stops47h 15m

Adelaide

Wed 3/11

2:15 pm-11:04 pm

1 stop26h 19m

$1,152

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Thu 2/12

8:30 am-9:30 am

2 stops30h 30m

Adelaide

Wed 3/11

2:15 pm-9:10 pm

2 stops24h 25m

$1,152

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

  • 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.

  • How long is the flight from Portland to Adelaide?

    A quick flight from Portland to Adelaide can take about 24h 23m. United Airlines provides one of the quickest options available for as low as $1,119. 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?

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.