What is the cheapest airline that flies from Portland to Adelaide?

Qantas Airways and United Airlines are the most popular carriers operating from Portland to Adelaide

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.

$636 Cheap Flights from Portland to Adelaide in 2025/26

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Find the cheapest flights from Portland to Adelaide

Round-trip

One-way

Cheap round-trip flights

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7:00 pm - 10:30 pm

PDX

ADL

33h 00m2 stops

7:05 am - 9:15 am

ADL

PDX

20h 40m2 stops

$965Multiple Airlines

Mon, Jan 19 - Mon, Jan 26

1:35 pm - 9:30 am

PDX

ADL

25h 25m1 stop

2:55 pm - 2:46 pm

ADL

PDX

18h 21m1 stop

$1,112United Airlines

Mon, Jan 19 - Mon, Jan 26

7:00 pm - 10:30 pm

PDX

ADL

33h 00m2 stops

6:10 am - 9:15 am

ADL

PDX

21h 35m2 stops

$1,116Air Canada

Sun, Jan 18 - Sun, Jan 25

7:00 pm - 4:20 pm

PDX

ADL

26h 50m2 stops

6:00 am - 6:30 pm

ADL

PDX

31h 00m3 stops

$1,188Multiple Airlines

Sun, Jan 18 - Sun, Jan 25

4:26 pm - 1:40 pm

PDX

ADL

26h 44m2 stops

7:50 am - 1:41 pm

ADL

PDX

24h 21m2 stops

$1,302Qantas Airways

Sun, Dec 28 - Tue, Jan 13

6:20 am - 1:00 pm

PDX

ADL

36h 10m2 stops

7:05 am - 1:41 pm

ADL

PDX

25h 06m2 stops

$1,387Qantas Airways

Sun, Dec 28 - Tue, Jan 13

7:00 am - 9:30 am

PDX

ADL

56h 00m2 stops

2:55 pm - 2:46 pm

ADL

PDX

18h 21m1 stop

$1,479United Airlines

Sun, Jan 11 - Sat, Jan 31

6:20 am - 1:00 pm

PDX

ADL

36h 10m2 stops

6:00 am - 1:41 pm

ADL

PDX

26h 11m2 stops

$1,510Qantas Airways

Sun, Dec 28 - Tue, Jan 13

10:52 am - 4:25 pm

PDX

ADL

35h 03m2 stops

6:05 am - 1:41 pm

ADL

PDX

26h 06m2 stops

$1,536Qantas Airways

Sun, Jan 11 - Sat, Jan 31

5:50 pm - 8:15 am

PDX

ADL

43h 55m2 stops

7:50 am - 1:41 pm

ADL

PDX

24h 21m2 stops

$1,567Qantas Airways

Sun, Jan 11 - Sat, Jan 31

Qantas Airways flights from Portland to Adelaide

Our best Qantas Airways deals on Portland to Adelaide flight tickets

Qantas Airways

Dec 28

PDX4:26 pmPortland

26h 44m

2 stops

ADL1:40 pmAdelaide

Jan 13

ADL7:50 amAdelaide

24h 21m

2 stops

PDX1:41 pmPortland

$1,302

Find similar

Qantas Airways

Dec 28

PDX6:20 amPortland

36h 10m

2 stops

ADL1:00 pmAdelaide

Jan 13

ADL7:05 amAdelaide

25h 06m

2 stops

PDX1:41 pmPortland

$1,387

Find similar

Qantas Airways

Dec 28

PDX6:20 amPortland

36h 10m

2 stops

ADL1:00 pmAdelaide

Jan 13

ADL6:00 amAdelaide

26h 11m

2 stops

PDX1:41 pmPortland

$1,510

Find similar

United Airlines flights from Portland to Adelaide

Our best United Airlines deals on Portland to Adelaide flight tickets

United Airlines

Jan 19

PDX1:35 pmPortland

25h 25m

1 stop

ADL9:30 amAdelaide

Jan 26

ADL2:55 pmAdelaide

18h 21m

1 stop

PDX2:46 pmPortland

$1,112

Find similar

United Airlines

Jan 11

PDX7:00 amPortland

56h 00m

2 stops

ADL9:30 amAdelaide

Jan 31

ADL2:55 pmAdelaide

18h 21m

1 stop

PDX2:46 pmPortland

$1,479

Find similar

United Airlines

Jan 11

PDX12:59 pmPortland

50h 01m

2 stops

ADL9:30 amAdelaide

Jan 31

ADL2:55 pmAdelaide

18h 21m

1 stop

PDX2:46 pmPortland

$1,658

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Mon 1/19

7:00 pm-10:30 pm

2 stops33h 00m

Adelaide

Mon 1/26

7:05 am-9:15 am

2 stops20h 40m

$965

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Mon 1/19

1:35 pm-9:30 am

1 stop25h 25m

Adelaide

Mon 1/26

2:55 pm-2:46 pm

1 stop18h 21m

$1,112

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Sun 1/18

7:00 pm-10:30 pm

2 stops33h 00m

Adelaide

Sun 1/25

6:10 am-9:15 am

2 stops21h 35m

$1,116

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Sun 1/18

7:00 pm-4:20 pm

2 stops26h 50m

Adelaide

Sun 1/25

6:00 am-6:30 pm

3 stops31h 00m

$1,188

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Sun 12/28

4:26 pm-1:40 pm

2 stops26h 44m

Adelaide

Tue 1/13

7:50 am-1:41 pm

2 stops24h 21m

$1,302

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Sun 12/28

6:20 am-1:00 pm

2 stops36h 10m

Adelaide

Tue 1/13

7:05 am-1:41 pm

2 stops25h 06m

$1,387

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Sun 1/11

7:00 am-9:30 am

2 stops56h 00m

Adelaide

Sat 1/31

2:55 pm-2:46 pm

1 stop18h 21m

$1,479

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Sun 12/28

6:20 am-1:00 pm

2 stops36h 10m

Adelaide

Tue 1/13

6:00 am-1:41 pm

2 stops26h 11m

$1,510

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Sun 1/11

10:52 am-4:25 pm

2 stops35h 03m

Adelaide

Sat 1/31

6:05 am-1:41 pm

2 stops26h 06m

$1,536

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Sun 1/11

5:50 pm-8:15 am

2 stops43h 55m

Adelaide

Sat 1/31

7:50 am-1:41 pm

2 stops24h 21m

$1,567

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Portland to Adelaide

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest day to depart on your flight to Adelaide?

The cheapest day to depart on your flight to Adelaide is on a Monday when prices can be found for as low as $1,455. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Adelaide is Sunday, with ticket prices averaging around $1,547.

What is the cheapest time of day to depart on your flight to Adelaide?

According to our data, the cheapest time of day to fly to Adelaide is in the afternoon. momondo users have found flights departing from Portland to Adelaide in the afternoon for as low as $1,279. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Adelaide are more costly in the evening, with an average ticket price of $1,590. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

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	33h 00m
Direct flights	None

The fastest flight from Portland to Adelaide takes 33h 00m

There are no direct flights from Portland to Adelaide. There are no popular flight routes from Portland to Adelaide.

Search flight deals

How far is Portland to Adelaide by plane?
There are 8265.6 mi between Portland and Adelaide. Flights usually cover this in 23h 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.

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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.