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Cheap flights from Australia to Portland from $790

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 20/8. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — PDX
14 Jul — 21 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Australia to Portland

Enter your travel dates to find the best prices.

Cheapest flights from Australia to Portland
Explore the most affordable flight options available from Australia to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 June 2026.

Mon 27/710:55
MEL
-
PDX
1 stop30h 55m
United Airlines
Mon 3/817:53
PDX
-
MEL
1 stop21h 22m
United Airlines
Deal found 11/6$1,346
Thu 22/1020:45
SYD
-
PDX
1 stop18h 01m
Multiple Airlines
Thu 5/1107:00
PDX
-
SYD
1 stop17h 45m
Multiple Airlines
Deal found 12/6$1,353
Wed 12/806:00
SYD
-
PDX
2 stops20h 31m
Multiple Airlines
Wed 9/910:10
PDX
-
SYD
1 stop28h 10m
Multiple Airlines
Deal found 12/6$1,360
Mon 13/710:55
MEL
-
PDX
1 stop22h 52m
Lufthansa
Mon 27/707:00
PDX
-
MEL
1 stop32h 15m
Lufthansa
Deal found 11/6$1,365
Wed 12/812:00
SYD
-
PDX
1 stop23h 59m
American Airlines
Wed 9/906:30
PDX
-
SYD
1 stop31h 35m
American Airlines
Deal found 12/6$1,380
Thu 10/916:05
BNE
-
PDX
2 stops21h 41m
Multiple Airlines
Sun 20/910:30
PDX
-
BNE
2 stops52h 30m
Multiple Airlines
Deal found 11/6$1,399
Wed 17/610:00
MEL
-
PDX
2 stops23h 19m
Delta
Wed 24/615:26
PDX
-
MEL
2 stops23h 24m
Delta
Deal found 11/6$1,407
Mon 15/609:10
SYD
-
PDX
1 stop30h 17m
Qantas Airways
Tue 30/617:37
PDX
-
SYD
1 stop20h 28m
Qantas Airways
Deal found 10/6$1,411
Mon 15/609:10
SYD
-
PDX
2 stops24h 32m
American Airlines
Tue 30/615:27
PDX
-
SYD
1 stop23h 03m
American Airlines
Deal found 10/6$1,421
Sun 26/720:45
SYD
-
PDX
1 stop17h 05m
Alaska Airlines
Sun 2/817:32
PDX
-
SYD
1 stop32h 18m
Alaska Airlines
Deal found 11/6$1,425
Mon 20/709:10
SYD
-
PDX
1 stop24h 28m
American Airlines
Mon 27/717:08
PDX
-
SYD
1 stop20h 57m
American Airlines
Deal found 11/6$1,429
Thu 12/1115:20
BNE
-
PDX
2 stops23h 29m
Multiple Airlines
Mon 16/1107:00
PDX
-
BNE
2 stops30h 35m
Multiple Airlines
Deal found 10/6$1,441

Find flight deals from Australia to Portland

Keep the following information in mind while searching for Australia to Portland flight deals. Data was last updated 14 June 2026.

Round-trip from

$1,346

One-way from

$790

Popular in

April

Cheapest in

November

Average price

$1,602
United Airlines
  • United Airlines
  • 27/7-3/8
  • 2 total stops
  • 52h 17m total
  • Australia to Portland
Search Deals
20/8
  • 20/8
  • 3 total stops
  • 43h 01m total
  • Australia to Portland
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($308 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($34 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Australia to Portland 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 647,157 searches. Data last updated 14 June 2026.
Use the filters below to find and compare flights from Australia to Portland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

MelbournePortland

MEL - PDX

MELPDX

Melbourne

Mon 27/7

10:55-22:48

2 stops28h 53m

Portland

Mon 3/8

05:00-07:30

2 stops33h 30m

$1,346

SydneyPortland

SYD - PDX

SYDPDX

Sydney Kingsford Smith

Wed 12/8

12:00-18:59

1 stop23h 59m

Portland

Wed 9/9

06:30-07:05

1 stop31h 35m

$1,380
Fastest return journey

SydneyPortland

SYD - PDX

SYDPDX

Sydney Kingsford Smith

Wed 12/8

06:00-09:31

2 stops20h 31m

Portland

Wed 9/9

19:45-10:20

2 stops21h 35m

$1,401

SydneyPortland

SYD - PDX

SYDPDX

Sydney Kingsford Smith

Mon 20/7

09:10-16:38

1 stop24h 28m

Portland

Mon 27/7

17:08-07:05

1 stop20h 57m

$1,429

SydneyPortland

SYD - PDX

SYDPDX

Sydney Kingsford Smith

Mon 20/7

09:15-16:09

2 stops23h 54m

Portland

Mon 27/7

09:32-06:50

2 stops28h 18m

$1,436

SydneyPortland

SYD - PDX

SYDPDX

Sydney Kingsford Smith

Wed 12/8

09:15-19:44

2 stops27h 29m

Portland

Wed 9/9

09:40-06:50

2 stops28h 10m

$1,438

BrisbanePortland

BNE - PDX

BNEPDX

Brisbane

Thu 12/11

15:20-20:49

2 stops23h 29m

Portland

Mon 16/11

07:00-07:35

2 stops30h 35m

$1,441

BrisbanePortland

BNE - PDX

BNEPDX

Brisbane

Sun 8/11

09:40-19:15

1 stop27h 35m

Portland

Thu 19/11

11:40-06:30

2 stops24h 50m

$1,456

BrisbanePortland

BNE - PDX

BNEPDX

Brisbane

Tue 10/11

13:10-22:25

1 stop27h 15m

Portland

Thu 19/11

12:00-06:30

1 stop24h 30m

$1,456

SydneyPortland

SYD - PDX

SYDPDX

Sydney Kingsford Smith

Thu 22/10

20:45-20:46

1 stop18h 01m

Portland

Thu 5/11

20:25-19:45

2 stops28h 20m

$1,468

Flights are sorted by cheapest return flights first.

Deals found on 10/6

Showing 1-10 of 52 resultsSorted by cheapest first
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Best time to book a flight from Australia to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from Australia with our price prediction graph.
Estimated return 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 Australia to Portland

What is the cheapest month to book a flight from Australia to Portland?

Currently, January is the cheapest month in which you can book a flight from Australia to Portland (average of $720). Flying from Australia to Portland in July is currently the most expensive (average of $1,279). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Portland

Get insights into the airlines that provide service to Portland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Portland. Reviews last updated 14 June 2026.
Check out reviews from past customers who have flown with Alaska Airlines,Delta, andQantas Airways from Australia to Portland to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
12,508 reviews
Check prices

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Food

7.0

Overall

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,June 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
Alaska Airlines
7.9
Good
12,508 reviews
Alaska Airlines
7.9
Good
12,508 reviews
Check prices

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Food

7.0

Overall

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,June 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
Delta
7.9
Good
8,398 reviews
Alaska Airlines
7.9
Good
12,508 reviews
Check prices

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Food

7.0

Overall

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,June 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
Qantas Airways
7.5
Good
1,046 reviews
Alaska Airlines
7.9
Good
12,508 reviews
Check prices

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Food

7.0

Overall

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,June 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
United Airlines
7.4
Good
9,826 reviews
Alaska Airlines
7.9
Good
12,508 reviews
Check prices

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Food

7.0

Overall

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,June 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
Air Canada
7.1
Good
11,193 reviews
Alaska Airlines
7.9
Good
12,508 reviews
Check prices

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Food

7.0

Overall

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,June 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.

Related info for your journey

Find useful and relevant information for your journey from Australia to Portland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Portland from Australia?

    Portland (PDX), located 9.7 km from the city centre, is the airport you fly into when you book flights from Australia to Portland.

  • How long is the flight from Australia to Portland?

    United Airlines, American Airlines, and Delta can get you from Australia to Portland in just under 23h 54m. Your travel time can differ by up to 4h 59m. The distance between Australia and Portland is about 12350 km. This flight may include one or multiple stops.

  • What are the most popular routes from Australia to Portland?

    The most popular flight routes from Australia to Portland are Melbourne - Portland, Brisbane - Portland and Sydney Kingsford Smith - Portland.

  • Can I find deals for flights from Australia to Portland that include hotel bookings?

    Yes. In addition to deals on Australia to Portland flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Australia to Portland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Australia to Portland.

  • Can I find deals for business class flights from Australia to Portland?

    Yes. Cheapflights offers flight deals from Australia to Portland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Australia to Portland?

    Currently, January is the cheapest month in which you can book a flight from Australia to Portland (average of $720). Flying from Australia to Portland in July is currently the most expensive (average of $1,279). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Fly from Australia to Portland on these airlines

Choose from the following airlines for your flight from Australia to Portland. Flights are based on user searches made on Cheapflights and were last updated on 14 June 2026.
United Airlines flights from Australia to Portland
Air Canada flights from Australia to Portland
Qantas Airways flights from Australia to Portland

Top 5 airlines flying from Australia to Portland

Discover the top 5 airlines that operate flights from Australia to Portland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 647,157 searches. Data last updated 14 June 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$720Average$1,616FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapest$749Average$1,676FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air CanadaCheapest$1,113Average$1,480FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Alaska AirlinesCheapest$1,165Average$1,437FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
Qantas AirwaysCheapest$1,283Average$1,628FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Australia to Portland?

Cheapflights helps you search for flights from Australia to Portland via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Australia to Portland?

Cheapflights simply makes it quick and affordable to book flights from Australia to Portland by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Australia to Portland with no change fees?

Certainly. Search results for flights to Portland from Australia shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Australia to Portland become cheaper?

Of course! You can now track prices for flights from Australia to Portland and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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