$608 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 28/3. 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$1,370
Brisbane
Brisbane1 stop$1,196
Perth
Perth2 stops$2,163
Coolangatta
Coolangatta2 stops$1,919
Sydney
Sydney1 stop$1,370
Brisbane
Brisbane1 stop$1,196
Perth
Perth2 stops$2,163
Coolangatta
Coolangatta2 stops$1,919

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, 5 Mar - Thu, 19 Mar
Air Canada Logo
15:15 - 08:45
PDX
-
BNE
23h 30m1 stop
Air Canada Logo
09:45 - 14:40
BNE
-
PDX
21h 55m1 stop
$1,196Air Canada
Sat, 10 Jan - Sat, 24 Jan
Multiple Airlines Logo
19:00 - 08:45
PDX
-
BNE
19h 45m1 stop
Multiple Airlines Logo
06:10 - 09:15
BNE
-
PDX
21h 05m2 stops
$1,221Multiple Airlines
Tue, 20 Jan - Sat, 31 Jan
Air Canada Logo
19:00 - 08:45
PDX
-
BNE
19h 45m1 stop
Air Canada Logo
10:45 - 09:15
BNE
-
PDX
16h 30m1 stop
$1,253Air Canada
Sat, 21 Feb - Sun, 1 Mar
American Airlines Logo
06:40 - 05:00
PDX
-
BNE
28h 20m1 stop
American Airlines Logo
17:10 - 17:19
BNE
-
PDX
18h 09m1 stop
$1,271American Airlines
Sat, 21 Feb - Sun, 1 Mar
American Airlines Logo
08:30 - 05:00
PDX
-
BNE
26h 30m2 stops
American Airlines Logo
17:10 - 00:16
BNE
-
PDX
25h 06m2 stops
$1,279American Airlines
Tue, 17 Feb - Tue, 24 Feb
Qantas Airways Logo
07:00 - 09:30
PDX
-
MEL
31h 30m1 stop
Qantas Airways Logo
06:45 - 17:19
MEL
-
PDX
29h 34m2 stops
$1,429Qantas Airways
Fri, 6 Feb - Tue, 10 Feb
Qantas Airways Logo
14:57 - 11:00
PDX
-
TSV
26h 03m2 stops
Qantas Airways Logo
11:45 - 20:34
TSV
-
PDX
26h 49m2 stops
$1,879Qantas Airways
Thu, 19 Feb - Mon, 23 Feb
United Airlines Logo
15:50 - 13:20
PDX
-
OOL
27h 30m2 stops
United Airlines Logo
07:20 - 18:55
OOL
-
PDX
29h 35m3 stops
$2,323United Airlines
Tue, 28 Apr - Fri, 1 May
Cathay Pacific Logo
17:30 - 22:40
PDX
-
PER
38h 10m2 stops
Cathay Pacific Logo
00:10 - 23:20
PER
-
PDX
62h 10m2 stops
$2,324Cathay Pacific
Thu, 29 Jan - Thu, 5 Feb
United Airlines Logo
13:35 - 14:45
PDX
-
PER
33h 10m2 stops
United Airlines Logo
23:45 - 12:33
PER
-
PDX
28h 48m2 stops
$2,764United 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 September, when tickets cost $1,496 (return) on average. On the other hand, the most expensive months are December and July, when the average cost of return tickets is $2,676 and $1,953 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 5 weeks before departure, which saves you about 13% 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$608
Best time to beat the crowds (2% less expensive on average)
Most popular time to fly (25% more expensive on average)
Flight from Portland to Brisbane

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 $1,365 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 $1,770.

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 9095 reviews
7.1Entertainment
6.6Food
8.1Crew
7.7Boarding
7.3Comfort
Airline reviews

The flight was on time. I generally don’t drink or eat on short flights and the seats were good and the flight attendants were friendly. That’s all I expect

10.0 ExcellentRoger, Dec 2025
CAE - ORD
Read more United Airlines reviews

The flight was on time. I generally don’t drink or eat on short flights and the seats were good and the flight attendants were friendly. That’s all I expect

It was nice to have gotten up upgraded to first class with a meal on a three hour flight

Not great experience - we were super late boarding due to issues with aircraft. Then when we finally all got onboard and seated and they started taxiing out to the runway they just stopped then turned around and went back to the airport. Apparently the crew “ran out of time” to legally fly us. They mentioned that they were about 2 minutes away from taking off. I understand the rules and safety but kinda wonder why they would have bothered boarding us in the first place? Had to go all the way back and de plane and then wait in a HUGE line to get a hotel (this is somewhere around 2:30am) finally got to hotel by Uber (no shuttle after 20min so gave up) and they ended up putting us all back on the same aircraft at 10am next morning so got about 2.5 hours sleep. They did give us. $250 credit, but it was a São Paulo Brazil flight out of Dulles. The flight and everything was fine.

United overall experience is great these days. Airport experience was very organized. Staff on flight were great. App and information as good as it gets.

United have really come back. Airport and boarding process is clear and good, app and information also very good

They charged a fee for 1st bag checked. Others in same party were free.

Flight was delayed 8 times. We were sitting at the airport for 14 hours. We got 2 hours of sleep (if that) on what was not meant to be a red-eye.

The movies offered were great. Staff were very pleasant and very efficient.

After a delay at the gate, C3, at Ohare on Sunday, I left my Blk ski coat on the bench at the gate, lost! Please review my lob claim, thx.

Very bad! They kept delaying my flight and wouldn’t do anything about it

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

Information on your arrival and departure airports

Portland (PDX)