$719 Find Cheap Flights from Portland to Australia

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to Australia departing on 30/7. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Portland to Australia

Cheapest return prices found by our users on KAYAK in the last 72 hours
Sydney
Sydney2 stops$1,529
Brisbane
Brisbane1 stop$1,499
Perth
Perth2 stops$1,771
Coolangatta
Coolangatta2 stops$1,878
Sydney
Sydney2 stops$1,529
Brisbane
Brisbane1 stop$1,499
Perth
Perth2 stops$1,771
Coolangatta
Coolangatta2 stops$1,878

Book Cheap Portland to Australia Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Portland to Australia that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Portland to Australia

Wed, 13 May - Wed, 27 May
Air Canada Logo
10:10 - 07:05
PDX
-
BNE
27h 55m
1 stop
Air Canada Logo
10:00 - 19:10
BNE
-
PDX
26h 10m
1 stop
$1,499Air Canada
Fri, 3 Jul - Mon, 13 Jul
Air Canada Logo
15:30 - 07:05
PDX
-
BNE
22h 35m
1 stop
Air Canada Logo
10:00 - 19:11
BNE
-
PDX
26h 11m
1 stop
$1,500Air Canada
Wed, 27 May - Wed, 3 Jun
American Airlines Logo
06:37 - 05:00
PDX
-
MEL
29h 23m
1 stop
American Airlines Logo
09:45 - 14:57
MEL
-
PDX
22h 12m
1 stop
$1,513American Airlines
Sat, 16 May - Wed, 10 Jun
Air Canada Logo
15:30 - 07:05
PDX
-
BNE
22h 35m
1 stop
Air Canada Logo
10:00 - 19:10
BNE
-
PDX
26h 10m
1 stop
$1,513Air Canada
Wed, 27 May - Wed, 3 Jun
American Airlines Logo
05:05 - 05:00
PDX
-
MEL
30h 55m
1 stop
American Airlines Logo
09:45 - 17:02
MEL
-
PDX
24h 17m
2 stops
$1,520American Airlines
Tue, 4 Aug - Tue, 18 Aug
United Airlines Logo
18:03 - 08:15
PDX
-
MEL
21h 12m
1 stop
United Airlines Logo
10:55 - 12:07
MEL
-
PDX
18h 12m
1 stop
$1,528United Airlines
Mon, 27 Jul - Thu, 6 Aug
United Airlines Logo
11:16 - 08:15
PDX
-
MEL
27h 59m
1 stop
United Airlines Logo
10:55 - 12:08
MEL
-
PDX
18h 13m
1 stop
$1,529United Airlines
Thu, 24 Sep - Mon, 5 Oct
Multiple Airlines Logo
17:35 - 11:50
PDX
-
SYD
25h 15m
2 stops
Multiple Airlines Logo
14:15 - 20:31
SYD
-
PDX
24h 16m
2 stops
$1,529Multiple Airlines
Wed, 19 Aug - Wed, 2 Sep
Multiple Airlines Logo
14:50 - 11:50
PDX
-
SYD
28h 00m
2 stops
Multiple Airlines Logo
06:00 - 20:50
SYD
-
PDX
31h 50m
2 stops
$1,531Multiple Airlines
Fri, 31 Jul - Fri, 7 Aug
Delta Logo
13:25 - 07:50
PDX
-
MEL
25h 25m
1 stop
Delta Logo
10:00 - 16:34
MEL
-
PDX
23h 34m
1 stop
$1,539Delta
Booking Insights

KAYAK's insights & trends for Portland to Australia flights

Get data-powered insights and trends into flights from Portland to Australia to help you find the cheapest flights, the best time to fly, and much more.

What is the cheapest month to fly from Portland to Australia?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Portland to Australia, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Portland to Australia is September, when tickets cost $194 (return) on average. On the other hand, the most expensive months are July and June, when the average cost of return tickets is $1,152 and $1,097 respectively.

How far in advance should I book a flight from Portland to Australia?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Portland to Australia, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on a flight from Portland to Australia, you should book around 2 weeks before departure, which saves you about 21% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Find deals

Good to know

Low seasonMay
Cheapest flight$719
Most popular time to fly (50% more expensive on average)
Flight from Portland to Coolangatta

FAQs - booking Australia flights

  • What are some of the transportation choices to get from the Sydney International Airport to the downtown Sydney area?

    One of the most convenient and cost-effective choices for making this trip is to travel on the Line T8 train offered by Sydney Trains that makes the trip from the airport in about 11 minutes. Taxis that make the trip from the airport can do so in about 15 minutes.

  • What are some transportation options to get from the Perth International Airport to downtown Perth?

    There is a light rail service offered by Transperth and their Airport Line that makes the trip from the airport in about 19 minutes. This company also offers their Line 380 bus that makes the trip in about 32 minutes. Traveling in a taxi from the airport to the downtown area should take about 17 minutes.

  • What are the visa and passport requirements when flying from Portland to Australia?

    There is a requirement to obtain a visa or an electronic travel authority before you fly to Australia. If you are traveling to Australia as a tourist and you do not plan on staying for more than 90 days, it is quite easy to obtain an electronic travel authority through the ETA website before your trip. Travelers also need to have a valid passport upon their entry into Australia.

  • Does the Sydney International Airport offer services or amenities to help me get freshened up after a long flight from Portland?

    Travelers will find that this airport offers free showers in Terminal One near Gates 31, 51, and 24. You can also find showers in the check-in area near Counters A and K on the departures level.

  • How does KAYAK find such low prices on flights from Portland to Australia?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Portland to Australia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portland to Australia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Portland to Australia is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Portland to Australia?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from Portland to Australia with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portland to Australia?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Portland to Australia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Australia

  • Travelers who plan on making a trip from the Portland International Airport (PDX) to Australia often make the choice to fly to the Sydney International Airport (SYD). When looking for flights on this route, some of the best options include one-stop flights aboard Air Canada, United Airlines, Delta Airlines, and Qantas Airways.
  • A popular destinations on the west coast of Australia is the city of Perth and the Perth International Airport (PER). Popular flight choices to this airport from Portland International Airport include two-stop flights offered by Air Canada.
  • Travelers that want to find a way to get to the Portland International Airport without having to take their own car should select the Central Oregon Breeze bus that makes the trip from Union Station in downtown Portland to the airport in about 30 minutes.
  • When moms who are nursing are planning a trip through the Portland International Airport, they are happy to find that this airport offers a nursing room that sits on the Concourse Level adjacent to Gates 5 and 6. This nursing room offers adjustable lighting, a chair, a very deep sink, as well as electrical outlets and a locking door.
  • If you are driving your own car to the Portland International Airport, one of the most convenient options for parking is their Valet Parking that lets you drop your car off adjacent to the ticket counter and then your car will be waiting for you at the curb upon your arrival back in Portland. For longer trips such as those to Australia, a more economical option is to choose the Economy Lot which offers the lowest daily parking rate, has free shuttle service to the terminal building, and also offers free flat tire assistance and jump starts should you need it.

Reviews of the top airline flying from Portland to Australia

 
Need help choosing which airline to fly with from Portland to Australia? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9678 reviews
6.6Food
7.1Entertainment
7.7Boarding
7.3Comfort
8.1Crew
Airline reviews

Some crew were unfriendly or in some cases just straight up rude.

6.0 GoodAnonymous, Apr 2026
SFO - YVR
Read more United Airlines reviews

Some crew were unfriendly or in some cases just straight up rude.

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

A long delay. Don't travel late in the day.

Super friendly with lots of drink options an entertainment. Friendly crew.

Standard flight with a drinks and a snack- overall very quick flight. The flight attendants were very strict, bordered on rude.

Outstanding service, efficient & friendly crew, flight was safe, comfortable & on time

United Airline crews were very friendly and very attentive. 12 hours flight was gone like in a shorter one.

Delayed - weather wasn't bad at either end. Also sat on tarmac in ORD.

Food was surprisingly delicious. Space in the seat is horrible when the seating front is reclined. Movie offerings were terrible. Crew was friendly and helpful.

Everything you need to know for your flight from Portland to Australia

Information on your arrival and departure airports

Portland (PDX)