$691 Find Cheap Flights from Portland to Australia – Compare and Save

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 26/9. 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
Sydney1 stop$1,481
Brisbane
Brisbane1 stop$1,458
Perth
Perth2 stops$1,717
Coolangatta
Coolangatta2 stops$1,858
Sydney
Sydney1 stop$1,481
Brisbane
Brisbane1 stop$1,458
Perth
Perth2 stops$1,717
Coolangatta
Coolangatta2 stops$1,858

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

Tue, 20 Oct - Tue, 3 Nov
Air Canada Logo
10:10 - 07:05
PDX
-
BNE
27h 55m
1 stop
Air Canada Logo
10:45 - 09:26
BNE
-
PDX
16h 41m
1 stop
$1,458Air Canada
Sat, 31 Oct - Sun, 8 Nov
Air Canada Logo
07:00 - 08:45
PDX
-
BNE
32h 45m
1 stop
Air Canada Logo
10:45 - 09:26
BNE
-
PDX
16h 41m
1 stop
$1,458Air Canada
Mon, 2 Nov - Mon, 16 Nov
Air Canada Logo
19:10 - 08:45
PDX
-
BNE
19h 35m
1 stop
Air Canada Logo
10:45 - 18:31
BNE
-
PDX
25h 46m
1 stop
$1,458Air Canada
Sun, 8 Nov - Wed, 18 Nov
Air Canada Logo
07:00 - 08:45
PDX
-
BNE
31h 45m
1 stop
Air Canada Logo
10:45 - 18:31
BNE
-
PDX
25h 46m
1 stop
$1,470Air Canada
Tue, 20 Oct - Tue, 3 Nov
Air Canada Logo
10:10 - 07:05
PDX
-
BNE
27h 55m
1 stop
Air Canada Logo
10:45 - 09:26
BNE
-
PDX
16h 41m
1 stop
$1,470Air Canada
Sat, 31 Oct - Sun, 8 Nov
Air Canada Logo
10:00 - 08:45
PDX
-
BNE
29h 45m
1 stop
Air Canada Logo
10:45 - 18:31
BNE
-
PDX
25h 46m
1 stop
$1,470Air Canada
Mon, 2 Nov - Mon, 16 Nov
Air Canada Logo
19:10 - 08:45
PDX
-
BNE
19h 35m
1 stop
Air Canada Logo
10:45 - 18:31
BNE
-
PDX
25h 46m
1 stop
$1,470Air Canada
Mon, 31 Aug - Wed, 18 Nov
Air Canada Logo
15:30 - 07:05
PDX
-
BNE
22h 35m
1 stop
Air Canada Logo
10:45 - 18:31
BNE
-
PDX
25h 46m
1 stop
$1,470Air Canada
Sun, 1 Nov - Sun, 8 Nov
United Airlines Logo
13:25 - 10:30
PDX
-
MEL
26h 05m
1 stop
United Airlines Logo
11:30 - 18:24
MEL
-
PDX
25h 54m
3 stops
$1,521United Airlines
Mon, 30 Nov - Wed, 16 Dec
United Airlines Logo
13:25 - 10:30
PDX
-
MEL
26h 05m
1 stop
United Airlines Logo
12:45 - 14:27
MEL
-
PDX
20h 42m
1 stop
$1,620United Airlines
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 February, when tickets cost $1,518 (return) on average. On the other hand, the most expensive months are December and July, when the average cost of return tickets is $2,403 and $1,952 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 11% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Find deals

Good to know

Low season

May

Cheapest flight

$691
Best time to beat the crowds (6% less expensive on average)
Most popular time to fly (20% 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 10062 reviews
7.1Entertainment
7.3Comfort
6.7Food
8.1Crew
7.7Boarding
Airline reviews

the whole trip was smooth, and as comfortable as flying is these days. flight crew was friendly and very courteous and helpful.

10.0 ExcellentJanaki, Feb 2026
PDX - SFO
Read more United Airlines reviews

the whole trip was smooth, and as comfortable as flying is these days. flight crew was friendly and very courteous and helpful.

Yet another flight in which beverage and snack service was skipped. Other that that, firmly mediocre. Landed early, to gate late due to congestion at the gates. Airline's fault or airports fault: unknown.

The flights were on time which was great give. It was holiday travel season and there’d been some weather issues. The only complaint and this is every time with United is the terrible seat design. The head rest is not built for comfort and having my neck bent forward for a cross country trip reminded me while I try not to take United flights as a rule.

This was a very average flight. The seat was out of alignment so more uncomfortable than usual. The cabin felt not well maintained. But I safely got where I needed to go.

We had a 90 minute delay due to equipment failure that was detected just before we took off. United rebooked my connecting flight.

Dinner was okay but the breakfast was not eatable on the flight San Francisco to Zurich.

This was a Lufthansa flight. Disappointing main meal. Very rough over Canada and arrival at FRA. IFE was almost unusable.

Poor seating comfort, seat cushion too thin, very uncomfortable. My luggage didi not make the flight due to equipment change. At least. United had it delivered the next day. I was without my toilet items for one day.

Flight cancelled because of the grounded 737s. United was good about it and got us onto a later Alaska Airlines flight to Oakland (not San Francisco as originally intended). Had to go through security again and my wife dropped her MacBook Pro, which broke, a $2,500 whoopsie. But we made it home.

I liked being upgraded to first class. The flight was a redeye, so I did sleep most of it.

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

Information on your arrival and departure airports

Portland (PDX)