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Cheap flights from Portland to Adelaide from $737

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 9/4. 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.
Air Canada Logo
3:30 pm - 11:50 am
PDX
-
ADL
27h 50m
2 stops
Air Canada Logo
8:00 pm - 9:31 am
ADL
-
PDX
30h 01m
2 stops
$1,088Air Canada
Tue, Aug 18 - Mon, Aug 24
Multiple Airlines Logo
3:30 pm - 10:05 pm
PDX
-
ADL
38h 05m
2 stops
Multiple Airlines Logo
6:00 am - 9:31 am
ADL
-
PDX
21h 01m
2 stops
$1,159Multiple Airlines
Sat, Sep 26 - Sun, Oct 4
Multiple Airlines Logo
3:30 pm - 12:50 pm
PDX
-
ADL
28h 50m
2 stops
Multiple Airlines Logo
5:15 pm - 2:46 pm
ADL
-
PDX
38h 01m
2 stops
$1,173Multiple Airlines
Sat, Sep 5 - Sat, Sep 12
Multiple Airlines Logo
7:45 pm - 3:55 pm
PDX
-
ADL
27h 40m
2 stops
Multiple Airlines Logo
5:35 pm - 2:51 pm
ADL
-
PDX
37h 46m
2 stops
$1,274Multiple Airlines
Thu, Aug 6 - Sun, Aug 9
United Airlines Logo
5:15 am - 10:55 am
PDX
-
ADL
37h 10m
3 stops
United Airlines Logo
6:05 am - 12:14 pm
ADL
-
PDX
22h 39m
2 stops
$1,721United Airlines
Thu, Aug 6 - Sun, Aug 9
Multiple Airlines Logo
7:03 am - 5:45 pm
PDX
-
ADL
42h 12m
3 stops
Multiple Airlines Logo
8:50 am - 8:54 am
ADL
-
PDX
40h 34m
3 stops
$1,881Multiple Airlines
Sat, Sep 5 - Sat, Sep 12
Air New Zealand Logo
7:15 pm - 11:55 am
PDX
-
ADL
24h 10m
2 stops
Air New Zealand Logo
6:30 pm - 6:19 pm
ADL
-
PDX
40h 19m
3 stops
$1,988Air New Zealand
Tue, Aug 18 - Mon, Aug 24
Cathay Pacific Logo
6:50 pm - 9:25 am
PDX
-
ADL
46h 05m
3 stops
Cathay Pacific Logo
12:00 pm - 4:45 pm
ADL
-
PDX
46h 15m
3 stops
$2,012Cathay Pacific
Sat, Sep 26 - Sun, Oct 4
Cathay Pacific Logo
9:45 pm - 9:25 am
PDX
-
ADL
43h 10m
3 stops
Cathay Pacific Logo
2:20 pm - 8:50 pm
ADL
-
PDX
47h 00m
3 stops
$2,025Cathay Pacific
Tue, Aug 18 - Mon, Aug 24
Multiple Airlines Logo
7:03 am - 4:20 pm
PDX
-
ADL
40h 47m
3 stops
Multiple Airlines Logo
9:10 am - 9:25 am
ADL
-
PDX
40h 45m
2 stops
$3,425Multiple Airlines
Sat, Sep 5 - Sat, Sep 12

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Cathay Pacific flights from Portland to Adelaide

Our best Cathay Pacific deals on Portland to Adelaide flight tickets
Cathay Pacific
Sep 26
PDX6:50 pmPortland
46h 05m
3 stops
ADL9:25 amAdelaide
Oct 4
ADL12:00 pmAdelaide
46h 15m
3 stops
PDX4:45 pmPortland
$2,012
Cathay Pacific
Aug 18
PDX9:45 pmPortland
43h 10m
3 stops
ADL9:25 amAdelaide
Aug 24
ADL2:20 pmAdelaide
47h 00m
3 stops
PDX8:50 pmPortland
$2,025
Cathay Pacific
Aug 6
PDX7:00 amPortland
38h 05m
3 stops
ADL1:35 pmAdelaide
Aug 9
ADL7:45 pmAdelaide
41h 33m
3 stops
PDX8:48 pmPortland
$3,457

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 July 25, 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

Tue 8/18

3:30 pm-11:50 am

2 stops27h 50m

Adelaide

Mon 8/24

8:00 pm-9:31 am

2 stops30h 01m

$1,088

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Sat 9/26

3:30 pm-10:05 pm

2 stops38h 05m

Adelaide

Sun 10/4

6:00 am-9:31 am

2 stops21h 01m

$1,159

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Sat 9/5

3:30 pm-12:50 pm

2 stops28h 50m

Adelaide

Sat 9/12

5:15 pm-2:46 pm

2 stops38h 01m

$1,173

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Thu 8/6

7:45 pm-3:55 pm

2 stops27h 40m

Adelaide

Sun 8/9

5:35 pm-2:51 pm

2 stops37h 46m

$1,274

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Thu 8/6

5:15 am-10:55 am

3 stops37h 10m

Adelaide

Sun 8/9

6:05 am-12:14 pm

2 stops22h 39m

$1,721

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Sat 9/5

7:03 am-5:45 pm

3 stops42h 12m

Adelaide

Sat 9/12

8:50 am-8:54 am

3 stops40h 34m

$1,881

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Tue 8/18

7:15 pm-11:55 am

2 stops24h 10m

Adelaide

Mon 8/24

6:30 pm-6:19 pm

3 stops40h 19m

$1,988

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Sat 9/26

6:50 pm-9:25 am

3 stops46h 05m

Adelaide

Sun 10/4

12:00 pm-4:45 pm

3 stops46h 15m

$2,012

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Tue 8/18

9:45 pm-9:25 am

3 stops43h 10m

Adelaide

Mon 8/24

2:20 pm-8:50 pm

3 stops47h 00m

$2,025

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Sat 9/5

7:03 am-4:20 pm

3 stops40h 47m

Adelaide

Sat 9/12

9:10 am-9:25 am

2 stops40h 45m

$3,425

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 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

27h 40m

Direct flights

None
The fastest flight from Portland to Adelaide takes 27h 40m
There are no direct flights from Portland to Adelaide. There are no popular flight routes from Portland to Adelaide.
Search flight deals

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 27h 40m, 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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