$809 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 23/9. 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

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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$1,486
Brisbane
Brisbane2 stops$1,460
Perth
Perth2 stops$1,984
Coolangatta
Coolangatta2 stops$1,819
Sydney
Sydney2 stops$1,486
Brisbane
Brisbane2 stops$1,460
Perth
Perth2 stops$1,984
Coolangatta
Coolangatta2 stops$1,819

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

Thu, 25 Dec - Fri, 16 Jan
United Airlines Logo
05:00 - 07:30PDX-BNE
32h 30m2 stops
United Airlines Logo
11:40 - 18:10BNE-PDX
24h 30m2 stops
$1,460United Airlines
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Fri, 13 Mar - Thu, 26 Mar
United Airlines Logo
15:41 - 09:00PDX-MEL
23h 19m1 stop
United Airlines Logo
12:00 - 14:42MEL-PDX
20h 42m1 stop
$1,465United Airlines
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Tue, 10 Feb - Sat, 28 Feb
Hawaiian Airlines Logo
14:45 - 19:45PDX-SYD
34h 00m2 stops
Hawaiian Airlines Logo
21:40 - 00:03SYD-PDX
21h 23m2 stops
$1,486Hawaiian Airlines
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Tue, 10 Feb - Sat, 28 Feb
Hawaiian Airlines Logo
16:00 - 19:45PDX-SYD
32h 45m2 stops
Hawaiian Airlines Logo
21:40 - 00:03SYD-PDX
21h 23m2 stops
$1,499Hawaiian Airlines
Find Deal
Tue, 24 Feb - Sun, 14 Jun
Delta Logo
19:14 - 08:00PDX-MEL
41h 46m2 stops
Delta Logo
10:00 - 18:41MEL-PDX
25h 41m2 stops
$1,541Delta
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Sun, 1 Mar - Wed, 11 Mar
 Logo
19:00 - 15:15PDX-MEL
25h 15m2 stops
 Logo
06:05 - 09:15MEL-PDX
21h 10m2 stops
$1,547
Find Deal
Thu, 25 Sep - Wed, 1 Oct
Delta Logo
17:10 - 06:35PDX-SYD
20h 25m2 stops
Delta Logo
09:25 - 14:52SYD-PDX
22h 27m2 stops
$1,549Delta
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Mon, 2 Feb - Tue, 10 Feb
Air Canada Logo
19:00 - 14:15PDX-MEL
24h 15m2 stops
Air Canada Logo
07:10 - 09:15MEL-PDX
21h 05m2 stops
$1,550Air Canada
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Sat, 28 Feb - Wed, 4 Mar
Air Canada Logo
09:50 - 15:15PDX-MEL
34h 25m2 stops
Air Canada Logo
08:10 - 09:15MEL-PDX
20h 05m2 stops
$1,565Air Canada
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Sun, 7 Dec - Wed, 17 Dec
 Logo
19:00 - 19:40PDX-SYD
29h 40m2 stops
 Logo
08:00 - 14:45SYD-PDX
25h 45m2 stops
$1,603
Find Deal
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 $1,499 (return) on average. On the other hand, the most expensive months are December and January, when the average cost of return tickets is $2,103 and $1,807 respectively.

What’s the cheapest day of the week to fly from Portland to Australia?

The average price of all round-trip flights from Portland to Australia clicked on KAYAK for each day over the last 12 months.

When flying from Portland to Australia, you should consider leaving on a Wednesday and avoid Sundays if you are looking for the best rates. For your return to Portland, you’ll find the best rates on Tuesdays and the most expensive ones on Saturdays.

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 14% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Good to know

Low seasonMay
Cheapest flight$809
Best time to beat the crowds but there is an average 8% increase in price.
Most popular time to fly and prices are also 14% lower 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.

  • What is the cheapest time of day to fly to Australia?

    The cheapest time of day to fly to Australia is generally in the morning, when retur flights cost $908 on average. Morning departures are around 23% cheaper than evening flights, on average. The most expensive time of day to fly to Australia is generally in the evening, which is peak travel time and where the average cost of a ticket is $1,178.

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 8929 reviews
8.1Crew
7.7Boarding
7.1Entertainment
6.6Food
7.3Comfort
Airline reviews

We had to deboard 2 times due to maintenance issues. They changed the plane, and then we got deviated to LAX due to maibtenance issues on the other plane, had to sleep at LAX and los a full day.

2.0 MediocreAnonymous, Sept 2025SFO - MEX
Read more United Airlines reviews

We had to deboard 2 times due to maintenance issues. They changed the plane, and then we got deviated to LAX due to maibtenance issues on the other plane, had to sleep at LAX and los a full day.

Everything was good, except the seats in economy were so close together, you could barely get out when the seat in front of your was reclined. If the airlines keep jamming in more and more seats, it will become intolerable. I will look for another airline that considers customer comfort and does not keep adding more rows of seats for more profit.

The newer screen was super cool and had the option to watch many different shows or movies. Crew was polite and helpful. However again, many children screaming bloody murder and kicking my seat, and parents doing nothing about it as usual.

Flight was good and crew was super polite. However, there were around 5 kids screaming the WHOLE 2 hours. I understand kids have to come but parents need to do something to control their children. They make the experience terrible, especially after finishing 16 hour shifts at the hospital I needed some sleep, which I did not get.

IAD with the archaic people movers is just a place to be avoided.

Great service on board. Boarding a bit slow due to process. Food was pretty average.

Tastless food and too obvious lack of enthusiasm for service in the economy vesus business class

All of the United employees I interacted with were professional and courteous. The aircraft was clean, the food on the flight was good. No complaints here.

I had no checked baggage but was required to hand over carry on baggage at the door of the plane. There was a lot of overboard space in the plane and I was one of the last ones. I ran to get my carry on but it was gone. I was given back at the plane door in Toronto, so the wait was not as long as it would have been at the carousel.

Armrest controller on my seat 35D and nextbooennseat 35E did not work right. Hard to press buttons to recognize and 35D had constantnpressure either upmost down somit was nearly impossible to make selections. .

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

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