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Cheap flights from Portland to Adelaide from $664

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Adelaide departing on 11/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Portland to Adelaide

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
3:30 pm - 11:10 am
PDX
-
ADL
27h 10m
2 stops
Multiple Airlines Logo
7:00 pm - 2:51 pm
ADL
-
PDX
36h 21m
2 stops
$1,087Multiple Airlines
Sun, Aug 2 - Mon, Aug 10
Multiple Airlines Logo
7:46 am - 10:35 pm
PDX
-
ADL
22h 19m
2 stops
Multiple Airlines Logo
7:00 pm - 8:50 pm
ADL
-
PDX
42h 20m
2 stops
$1,597Multiple Airlines
Thu, Jul 9 - Mon, Jul 27
Qantas Airways Logo
5:37 pm - 7:00 pm
PDX
-
ADL
32h 53m
2 stops
Qantas Airways Logo
8:05 pm - 11:56 pm
ADL
-
PDX
44h 21m
2 stops
$1,617Qantas Airways
Fri, Jul 10 - Thu, Jul 16
Air New Zealand Logo
3:30 pm - 11:55 am
PDX
-
ADL
27h 55m
3 stops
Air New Zealand Logo
6:25 am - 7:11 pm
ADL
-
PDX
29h 16m
3 stops
$1,808Air New Zealand
Sun, Aug 2 - Mon, Aug 10
Air New Zealand Logo
3:30 pm - 11:55 am
PDX
-
ADL
27h 55m
3 stops
Air New Zealand Logo
12:05 pm - 7:11 pm
ADL
-
PDX
23h 36m
2 stops
$1,950Air New Zealand
Sun, Aug 2 - Mon, Aug 10
United Airlines Logo
5:15 am - 10:55 am
PDX
-
ADL
37h 10m
3 stops
United Airlines Logo
7:15 am - 12:08 pm
ADL
-
PDX
21h 23m
2 stops
$2,034United Airlines
Thu, Jul 9 - Mon, Jul 27
United Airlines Logo
5:15 am - 10:05 am
PDX
-
ADL
36h 20m
3 stops
United Airlines Logo
8:00 pm - 10:20 am
ADL
-
PDX
30h 50m
2 stops
$2,071United Airlines
Fri, Jul 10 - Thu, Jul 16
ANA Logo
10:10 am - 1:55 pm
PDX
-
ADL
35h 15m
3 stops
ANA Logo
6:00 am - 7:11 pm
ADL
-
PDX
29h 41m
3 stops
$2,426ANA
Thu, Jul 9 - Mon, Jul 27
Cathay Pacific Logo
7:00 am - 4:25 pm
PDX
-
ADL
40h 55m
3 stops
Cathay Pacific Logo
7:45 pm - 11:56 pm
ADL
-
PDX
44h 41m
3 stops
$3,061Cathay Pacific
Fri, Jul 10 - Thu, Jul 16
Multiple Airlines Logo
10:30 am - 8:05 am
PDX
-
ADL
53h 05m
2 stops
Multiple Airlines Logo
2:25 pm - 6:14 am
ADL
-
PDX
32h 19m
2 stops
$7,337Multiple Airlines
Tue, Sep 1 - Sat, Sep 12

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Air New Zealand flights from Portland to Adelaide

Our best Air New Zealand deals on Portland to Adelaide flight tickets
Air New Zealand
Aug 2
PDX3:30 pmPortland
27h 55m
3 stops
ADL11:55 amAdelaide
Aug 10
ADL6:25 amAdelaide
29h 16m
3 stops
PDX7:11 pmPortland
$1,808
Air New Zealand
Aug 2
PDX3:30 pmPortland
27h 55m
3 stops
ADL11:55 amAdelaide
Aug 10
ADL12:05 pmAdelaide
23h 36m
2 stops
PDX7:11 pmPortland
$1,950

Cathay Pacific flights from Portland to Adelaide

Our best Cathay Pacific deals on Portland to Adelaide flight tickets
Cathay Pacific
Jul 10
PDX7:00 amPortland
40h 55m
3 stops
ADL4:25 pmAdelaide
Jul 16
ADL7:45 pmAdelaide
44h 41m
3 stops
PDX11:56 pmPortland
$3,061
Cathay Pacific
Sep 1
PDX5:55 pmPortland
47h 00m
3 stops
ADL9:25 amAdelaide
Sep 12
ADL7:45 pmAdelaide
42h 40m
3 stops
PDX9:55 pmPortland
$10,933

momondo 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, momondo users made 832,500 searches. Data last updated June 11, 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

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Sun 8/2

3:30 pm-11:10 am

2 stops27h 10m

Adelaide

Mon 8/10

7:00 pm-2:51 pm

2 stops36h 21m

$1,087

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Thu 7/9

7:46 am-10:35 pm

2 stops22h 19m

Adelaide

Mon 7/27

7:00 pm-8:50 pm

2 stops42h 20m

$1,597

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Fri 7/10

5:37 pm-7:00 pm

2 stops32h 53m

Adelaide

Thu 7/16

8:05 pm-11:56 pm

2 stops44h 21m

$1,617

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Sun 8/2

3:30 pm-11:55 am

3 stops27h 55m

Adelaide

Mon 8/10

6:25 am-7:11 pm

3 stops29h 16m

$1,808
Quickest round-trip

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Sun 8/2

3:30 pm-11:55 am

3 stops27h 55m

Adelaide

Mon 8/10

12:05 pm-7:11 pm

2 stops23h 36m

$1,950

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Thu 7/9

5:15 am-10:55 am

3 stops37h 10m

Adelaide

Mon 7/27

7:15 am-12:08 pm

2 stops21h 23m

$2,034

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Fri 7/10

5:15 am-10:05 am

3 stops36h 20m

Adelaide

Thu 7/16

8:00 pm-10:20 am

2 stops30h 50m

$2,071

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Thu 7/9

10:10 am-1:55 pm

3 stops35h 15m

Adelaide

Mon 7/27

6:00 am-7:11 pm

3 stops29h 41m

$2,426

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Fri 7/10

7:00 am-4:25 pm

3 stops40h 55m

Adelaide

Thu 7/16

7:45 pm-11:56 pm

3 stops44h 41m

$3,061

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Tue 9/1

10:30 am-8:05 am

2 stops53h 05m

Adelaide

Sat 9/12

2:25 pm-6:14 am

2 stops32h 19m

$7,337

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
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When to book flights from Portland to Adelaide

Are you open to changing your travel dates? Check out the ideal times to fly from Portland to Adelaide according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Portland to Adelaide (PDX to ADL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Adelaide

Fastest flight time

22h 19m

Direct flights

None
The fastest flight from Portland to Adelaide takes 22h 19m
There are no direct flights from Portland to Adelaide. There are no popular flight routes from Portland to Adelaide.
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Frequently asked questions about flying from Portland to Adelaide

  • How far is Portland to Adelaide by plane?

    There are 8265.6 mi between Portland and Adelaide. Flights usually cover this in 22h 19m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Portland Airport to Adelaide Airport?

    Prices for flights from Portland Airport to Adelaide Airport refresh daily.

  • How old do you have to be to fly from Portland Airport to Adelaide Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Adelaide Airport.

  • What documentation or ID do you need to fly to Adelaide Airport?

    The necessary travel and health documents for your Adelaide Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from Portland to Adelaide

  • How do I get Price Alerts for flights from Portland to Adelaide?

    Search flight deals from Portland to Adelaide. While viewing offers you’ll have the option to create a Price Alert.

  • How can I save money on flights from Portland to Adelaide with momondo?

    By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Traveling to a place near Adelaide?

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

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Adelaide?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Portland to Adelaide. momondo saves you time and could save you money on your trip.

Can I find flights from Portland to Adelaide with flexible booking policies on momondo?

All flight searches from Portland to Adelaide on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Portland to Adelaide?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Portland to Adelaide.

I’m not ready to book a flight from Portland to Adelaide right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Portland to Adelaide now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Adelaide and let you know when they change.

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