$587 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
Sydney1 stop$1,187
Brisbane
Brisbane1 stop$1,437
Perth
Perth2 stops$1,865
Sydney
Sydney1 stop$1,187
Brisbane
Brisbane1 stop$1,437
Perth
Perth2 stops$1,865

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, 21 Aug - Thu, 4 Sep
Air Canada Logo
19:40 - 07:20PDX-SYD
18h 40m1 stop
Air Canada Logo
09:20 - 14:46SYD-PDX
22h 26m1 stop
$1,187Air Canada
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Sun, 24 Aug - Tue, 9 Sep
Air Canada Logo
15:25 - 07:20PDX-SYD
22h 55m1 stop
Air Canada Logo
09:20 - 09:21SYD-PDX
17h 01m1 stop
$1,189Air Canada
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Fri, 12 Sep - Fri, 19 Sep
American Airlines Logo
11:42 - 07:05PDX-SYD
26h 23m2 stops
American Airlines Logo
09:10 - 16:44SYD-PDX
24h 34m2 stops
$1,246American Airlines
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Fri, 26 Sep - Sat, 4 Oct
Qantas Airways Logo
14:56 - 07:05PDX-SYD
23h 09m1 stop
Qantas Airways Logo
17:45 - 21:16SYD-PDX
20h 31m1 stop
$1,257Qantas Airways
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Tue, 9 Sep - Tue, 23 Sep
Qantas Airways Logo
14:50 - 07:05PDX-SYD
23h 15m1 stop
Qantas Airways Logo
09:10 - 19:10SYD-PDX
27h 00m1 stop
$1,262Qantas Airways
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Tue, 2 Sep - Tue, 23 Sep
 Logo
14:30 - 06:05PDX-SYD
22h 35m1 stop
 Logo
09:10 - 13:24SYD-PDX
21h 14m1 stop
$1,265
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Sun, 21 Sep - Tue, 30 Sep
 Logo
19:40 - 11:40PDX-SYD
23h 00m2 stops
 Logo
06:30 - 14:46SYD-PDX
25h 16m2 stops
$1,280
Find Deal
Tue, 2 Sep - Tue, 23 Sep
American Airlines Logo
14:56 - 07:05PDX-SYD
23h 09m1 stop
American Airlines Logo
17:10 - 21:16SYD-PDX
21h 06m2 stops
$1,294American Airlines
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Wed, 19 Nov - Mon, 1 Dec
United Airlines Logo
15:54 - 07:30PDX-BNE
21h 36m1 stop
United Airlines Logo
11:40 - 10:53BNE-PDX
17h 13m1 stop
$1,654United Airlines
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Wed, 19 Nov - Tue, 2 Dec
United Airlines Logo
08:30 - 07:30PDX-BNE
29h 00m2 stops
United Airlines Logo
11:40 - 14:47BNE-PDX
21h 07m1 stop
$1,662United Airlines
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 $1,566 (return) on average. On the other hand, the most expensive months are December and January, when the average cost of return tickets is $2,460 and $2,159 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 13% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 14 weeks before departure.


Good to know

Low seasonMay
Cheapest flight$587
Best time to beat the crowds but there is an average 9% increase in price.
Most popular time to fly and prices are also 13% 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 8900 reviews
7.1Entertainment
7.3Comfort
7.7Boarding
6.6Food
8.1Crew
Airline reviews

Terrible. Delayed 7 hours, and cancelled the flight, leaving me stranded and out of pocket $500 for an alternative last minute flight

2.0 MediocreV, July 2025MIA - EWR
Read more United Airlines reviews

Terrible. Delayed 7 hours, and cancelled the flight, leaving me stranded and out of pocket $500 for an alternative last minute flight

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

the delay for 3 hours was understandable due to weather conditions but the flight should’ve provided some on flight compensations or at least provide more food.

Weather delay in Chicago?. No sense of urgency to make connection in Chicago for our connecting flight that wasn't delayed. Connection was missed.

Our flight was understandably diverted to a small regional airport in Laramie, Wyoming due to weather conditions, which I fully recognize and appreciate. However, the low rating stems from the experience that followed: passengers remained on board for over an hour without the option to deplane and stretch, despite the aircraft being stationary. Although the pilot opened the cabin door, only he was permitted to exit. Meanwhile, passengers grew increasingly uncomfortable as warm summer air entered the cabin through the open door, and being in the second row meant we were impacted immediately. While the flight attendants made efforts to keep everyone at ease, I believe allowing passengers to deplane briefly, given the extended delay, would have significantly improved the overall experience.

I never flew. Flight was canceled. DIA worst airport in the country. Avoid at all costs.

I learned that seating towards the end of plane that a line forms for the restroom and people use your chair as a hand railing, bumping your seat consistently. I was seated in the aisle. I think that next time if I am towards the back row I would want to sit in the middle or window seat.

The best airline I have ever travel , really good customer service, attention and service !!

United could have one single once of customer service. No human United employee would help me with the invalid mileage plus number, they said I had to speak with the computer.

United sent me a mileage plus number last year but that number is invalid so I can’t use it to check into flights or collect mileage. There is human to speak about the problem, only computers who keep asking me if I am using the correct email. It’s so frustrating and I cannot resolve it.

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

Information on your arrival and departure airports

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