$876 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 27/6. 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.
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Best Australia Flight Deals from Portland

Cheapest return prices found by our users on KAYAK in the last 72 hours

Sydney
Sydney1 stop$1,558
Brisbane
Brisbane1 stop$1,958
Perth
Perth2 stops$2,312

Cheap Flight Deals from Portland to Australia (PDX-AU0)

 
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.

Recent return flight deals from Portland to Australia

Recommended return flight deals departing in the coming months from the most popular airlines that fly from Portland to Australia.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
 Logo
17:33 - 14:40PDX-SYD
28h 07m1 stop
 Logo
16:20 - 07:18SYD-PDX
31h 58m2 stops
$1,558
Find Deal
Thu, 29 May - Thu, 5 Jun
 Logo
17:33 - 14:40PDX-SYD
28h 07m1 stop
 Logo
16:20 - 21:55SYD-PDX
22h 35m1 stop
$1,596
Find Deal
Thu, 29 May - Thu, 5 Jun
Air New Zealand Logo
17:40 - 08:45PDX-SYD
21h 05m2 stops
Air New Zealand Logo
11:45 - 14:42SYD-PDX
21h 57m2 stops
$1,730Air New Zealand
Find Deal
Tue, 21 Oct - Tue, 18 Nov
Air Canada Logo
19:40 - 08:20PDX-SYD
18h 40m1 stop
Air Canada Logo
11:20 - 14:44SYD-PDX
22h 24m1 stop
$1,786Air Canada
Find Deal
Tue, 21 Oct - Tue, 11 Nov
Alaska Airlines Logo
08:05 - 19:45PDX-SYD
18h 40m1 stop
Alaska Airlines Logo
21:40 - 06:20SYD-PDX
25h 40m1 stop
$1,808Alaska Airlines
Find Deal
Sat, 10 May - Sun, 18 May
Air Canada Logo
19:40 - 07:20PDX-SYD
18h 40m1 stop
Air Canada Logo
07:30 - 09:21SYD-PDX
18h 51m2 stops
$1,811Air Canada
Find Deal
Tue, 2 Sep - Tue, 23 Sep
Alaska Airlines Logo
08:05 - 19:45PDX-SYD
18h 40m1 stop
Alaska Airlines Logo
21:40 - 23:44SYD-PDX
19h 04m2 stops
$1,814Alaska Airlines
Find Deal
Sat, 10 May - Thu, 22 May
Air New Zealand Logo
09:59 - 10:35PDX-SYD
31h 36m2 stops
Air New Zealand Logo
18:20 - 20:37SYD-PDX
43h 17m2 stops
$1,856Air New Zealand
Find Deal
Sun, 17 Aug - Sat, 30 Aug
United Airlines Logo
12:42 - 08:15PDX-MEL
26h 33m2 stops
United Airlines Logo
10:55 - 20:37MEL-PDX
26h 42m1 stop
$1,934United Airlines
Find Deal
Sun, 22 Jun - Mon, 7 Jul
United Airlines Logo
19:35 - 09:15PDX-MEL
19h 40m1 stop
United Airlines Logo
12:00 - 18:36MEL-PDX
24h 36m1 stop
$1,953United Airlines
Find Deal
Wed, 15 Oct - Sun, 26 Oct
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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 time of day to fly to Australia?

The average price for all round-trip flights from Portland to Australia depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.
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.

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 $1,622 (return) on average. On the other hand, the most expensive months are December and January, when the average cost of return tickets is $2,462 and $2,172 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 the flight from Portland to Australia, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 14 weeks before departure.

Good to know

Low season

May

High season

December

Cheapest flight

$876
Best time to beat the crowds but there is an average 3% increase in price.
Most popular time to fly (21% 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.

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 8696 reviews
6.6Food
8.1Crew
7.1Entertainment
7.3Comfort
7.7Boarding
Airline reviews

Everything is good except the dinner and breakfast. The sandwich is very delicious. Toilet is clean, I only use one of them. Flight attendants are very nice. 👍👍

10.0 ExcellentAnonymous, Apr 2025SFO - HKG
Read more United Airlines reviews

Everything is good except the dinner and breakfast. The sandwich is very delicious. Toilet is clean, I only use one of them. Flight attendants are very nice. 👍👍

A bit rush for transit. Food and entertainment are not available

Boarding was a little difficult. The gate area at O'Hare was very small and crowded due to multiple gates in the area. Could not hear the intercom, so had to rely on signage to see when my group was boarding and the signage was blocked by passengers standing in the gate. Flight was great and we arrived in Montreal on time.

Multiple delays and not straight answer from the United team

For economy, it was very good. Staff was great, they even let some of us change seats for more leg room... Put an empty seat between us which was fantastic for a 12hr flight. Onboard entertainment was excellent, I think over 200 choices of movies/tv/etc The bad was the barely/nonfunctional wifi that cost either $16.99 or 1700 miles (full flight). It was atrocious... Definitely the worst of the last 3 long haul major airlines I was on the last few months.

Stewardess spilled orange juice on my clothes/seat no help no apology just threw napkins at me to clean the mess up. Not Happy.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

The plane pushed back from the gate on time. However, it stopped on the ramp, and we waited for over 20 minutes before the aircraft pulled back to the gate. Apparently, something of importance had to be removed from the aircraft by the gate agent. I found this to be odd. The delay was not significant, but I felt that whatever was on the aircraft that had to be taken off, should’ve been done before we pushed back from the gate.

I didn’t get on plane. Passport being processed by consulate with visa application. Tried to cancel through underpricer after purchasing cacelling for any reason. No dice, they are thieves.

Electric plugs didn't work. Entertainment system wasn't working

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

Information on your arrival and departure airports

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