$679 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 2/3. 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$1,383
Brisbane
Brisbane2 stops$1,199
Perth
Perth2 stops$1,922
Coolangatta
Coolangatta2 stops$1,947
Sydney
Sydney1 stop$1,383
Brisbane
Brisbane2 stops$1,199
Perth
Perth2 stops$1,922
Coolangatta
Coolangatta2 stops$1,947

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

Fri, 13 Mar - Fri, 20 Mar
Multiple Airlines Logo
09:53 - 10:25
PDX
-
BNE
31h 32m
2 stops
Multiple Airlines Logo
11:50 - 20:48
BNE
-
PDX
25h 58m
2 stops
$1,199Multiple Airlines
Thu, 5 Mar - Thu, 19 Mar
Air Canada Logo
09:50 - 08:45
PDX
-
BNE
28h 55m
1 stop
Air Canada Logo
09:45 - 14:40
BNE
-
PDX
21h 55m
1 stop
$1,244Air Canada
Thu, 12 Mar - Thu, 19 Mar
Qantas Airways Logo
17:39 - 09:30
PDX
-
MEL
21h 51m
1 stop
Qantas Airways Logo
12:00 - 21:52
MEL
-
PDX
27h 52m
1 stop
$1,344Qantas Airways
Tue, 24 Feb - Sat, 7 Mar
Qantas Airways Logo
14:30 - 09:30
PDX
-
MEL
24h 00m
1 stop
Qantas Airways Logo
12:00 - 17:13
MEL
-
PDX
24h 13m
1 stop
$1,375Qantas Airways
Mon, 9 Feb - Sun, 8 Mar
American Airlines Logo
06:00 - 05:00
PDX
-
MEL
28h 00m
1 stop
American Airlines Logo
12:00 - 20:52
MEL
-
PDX
27h 52m
1 stop
$1,377American Airlines
Sun, 8 Mar - Mon, 16 Mar
American Airlines Logo
15:10 - 09:30
PDX
-
MEL
24h 20m
2 stops
American Airlines Logo
12:00 - 17:08
MEL
-
PDX
23h 08m
1 stop
$1,383American Airlines
Tue, 3 Mar - Tue, 17 Mar
Qatar Airways Logo
07:05 - 11:55
PDX
-
PER
36h 50m
2 stops
Qatar Airways Logo
22:45 - 21:38
PER
-
PDX
37h 53m
2 stops
$1,922Qatar Airways
Fri, 13 Feb - Tue, 17 Feb
United Airlines Logo
15:50 - 13:20
PDX
-
OOL
27h 30m
2 stops
United Airlines Logo
07:20 - 18:55
OOL
-
PDX
29h 35m
3 stops
$2,407United Airlines
Sun, 15 Feb - Wed, 18 Feb
Qatar Airways Logo
13:36 - 12:20
PDX
-
PER
30h 44m
2 stops
Qatar Airways Logo
22:45 - 23:44
PER
-
PDX
40h 59m
2 stops
$2,457Qatar Airways
Fri, 13 Feb - Tue, 17 Feb
United Airlines Logo
13:40 - 13:20
PDX
-
OOL
29h 40m
2 stops
United Airlines Logo
07:20 - 18:55
OOL
-
PDX
29h 35m
3 stops
$2,597United 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 June, when tickets cost $1,438 (return) on average. On the other hand, the most expensive months are December and July, when the average cost of return tickets is $2,563 and $1,883 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 3 weeks before departure, which saves you about 25% 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 seasonJune
Cheapest flight$679
Best time to beat the crowds (2% less expensive on average)
Most popular time to fly (22% more expensive on average)
Flight from Portland to Sydney

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 9209 reviews
7.7Boarding
7.3Comfort
7.1Entertainment
8.1Crew
6.6Food
Airline reviews

In overall it was a good experience, the only down point was that the entertainment screen was working properly.

8.0 ExcellentAnonymous, Jan 2026
ORD - TPA
Read more United Airlines reviews

In overall it was a good experience, the only down point was that the entertainment screen was working properly.

HORRIBLE, my initial flight was cancelled, they made me pay $200 extra dollars and that got cancelled as well! After 6 cancellations I decided to get a refund because I needed to get home to my babies. Out of $1000+ dollars they offered me only $40 in refund! Totally unacceptable! The flight that they cancelled I was able to fly it on another airline. I had to spend $400 on one way tickets just to get home! I’m still getting the runaround.

First class ticket gets you a choice of chips or nuts. . Just like economy Southwest. Also no screen in the seats. This is first class???!

Seated dude next to me even though lots of empty rows. But main thing was we sat on the tarmac after landing for 30 minutes because of, in the words of the dude who sat next to me, “operational incompetence”. We got changing directions about where to pick up gate checked bags. Pilot and flight attendant were awesome though.

The food was terrible this time. Otherwise pleasant, quiet, on-time.

It was a pretty standard flight... until the almost hour and a half spent on the taxi way. I get that the weather has been poor but the delay had nothing to do with the weather and more to do with a plane with several issues tying up the gate. I get that that happens from time to time but this has been EVERY flight I've been on for the past 5 years and I fly 3 to 5 times a year. This isn't just United... it's American, it's Delta. It's an issue with the entire industry. I work for UPS and packages on a cargo plane get better service than people do these days. Anymore I HATE flying.

Flight arrived 30 min early and bag was waiting at the baggage pickup. United Club HNL was one of the nicest in the system

Unfortunately weather delayed our flight waiting for our plane to arrive and due to a little snow time was needed to deice the plane so departure was very delayed and I missed the connecting flight

Very good. Because of the delays with my previous flight, I missed my connection, but I was able to book another flight through the United app easily.

I wish there were outlets to charge my iPhone. The crew was great; we had a female pilot who was great with explaining what was happening and delays,

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

Information on your arrival and departure airports

Portland (PDX)