$1,556 Find Cheap Flights from Portland to Australia - Compare and Save

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Book Cheap Portland to Australia Plane Tickets

 

Cheap flights from Portland with top airlines, updated regularly. Compare round-trip, one-way, direct and last-minute deals.

Wed, Nov 25 - Wed, Dec 2
United Airlines Logo
3:23 pm - 9:30 amPWM  Portland-MEL Melbourne
26h 07m2 stops Denver Intl Los Angeles
United Airlines Logo
11:30 am - 11:24 pmMEL  Melbourne-PWM Portland
27h 54m2 stops Los Angeles Newark
$1,556United Airlines
Sat, Nov 28 - Sat, Dec 5
Delta Logo
6:00 am - 8:30 amPWM  Portland-SYD Sydney Kingsford Smith
34h 30m2 stops New York John F Kennedy Intl Los Angeles
Delta Logo
10:40 am - 12:21 amSYD  Sydney Kingsford Smith-PWM Portland
29h 41m2 stops Los Angeles New York John F Kennedy Intl
$1,602Delta
Sat, Dec 5 - Mon, Jan 25
Delta Logo
6:00 am - 8:00 amPWM  Portland-MEL Melbourne
34h 00m2 stops Atlanta Hartsfield-Jackson Los Angeles
Delta Logo
10:10 am - 11:49 pmMEL  Melbourne-PWM Portland
29h 39m2 stops Los Angeles New York John F Kennedy Intl
$1,602Delta
Thu, Nov 26 - Thu, Dec 3
United Airlines Logo
5:50 am - 10:30 amPWM  Portland-MEL Melbourne
36h 40m2 stops Newark San Francisco
United Airlines Logo
12:45 pm - 11:24 pmMEL  Melbourne-PWM Portland
26h 39m2 stops San Francisco Newark
$1,656United Airlines
Fri, Nov 27 - Fri, Dec 4
United Airlines Logo
8:29 am - 9:30 amPWM  Portland-MEL Melbourne
33h 01m3 stops Chicago O'Hare Intl Denver Intl Los Angeles
United Airlines Logo
11:30 am - 11:24 pmMEL  Melbourne-PWM Portland
27h 54m2 stops Los Angeles Newark
$1,656United Airlines
Fri, Nov 27 - Fri, Dec 4
United Airlines Logo
6:00 am - 10:30 amPWM  Portland-MEL Melbourne
36h 30m2 stops Newark San Francisco
United Airlines Logo
12:45 pm - 8:42 pmMEL  Melbourne-PWM Portland
23h 57m2 stops San Francisco Newark
$1,656United Airlines
Sun, Nov 8 - Thu, Nov 12
Turkish Airlines Logo
6:30 am - 7:25 pmPWM  Portland-SYD Sydney Kingsford Smith
44h 55m3 stops New York John F Kennedy Intl Istanbul Singapore Changi
Turkish Airlines Logo
9:35 pm - 11:43 pmSYD  Sydney Kingsford Smith-PWM Portland
42h 08m3 stops Singapore Changi Istanbul New York John F Kennedy Intl
$1,659Turkish Airlines
Sat, Dec 5 - Mon, Jan 25
United Airlines Logo
2:15 pm - 10:30 amPWM  Portland-MEL Melbourne
28h 15m2 stops Washington, D.C. Dulles Intl San Francisco
United Airlines Logo
8:10 am - 6:53 pmMEL  Melbourne-PWM Portland
26h 43m3 stops Brisbane San Francisco Newark
$1,716United Airlines
Sun, Nov 8 - Thu, Nov 12
Turkish Airlines Logo
6:30 am - 7:25 pmPWM  Portland-SYD Sydney Kingsford Smith
44h 55m3 stops New York John F Kennedy Intl Istanbul Singapore Changi
Turkish Airlines Logo
9:35 pm - 11:43 pmSYD  Sydney Kingsford Smith-PWM Portland
42h 08m3 stops Singapore Changi Istanbul New York John F Kennedy Intl
$1,799Turkish Airlines
Mon, Nov 9 - Sat, Nov 28
United Airlines Logo
8:29 am - 9:30 amPWM  Portland-MEL Melbourne
33h 01m3 stops Chicago O'Hare Intl Denver Intl Los Angeles
United Airlines Logo
12:45 pm - 9:00 amMEL  Melbourne-PWM Portland
60h 15m2 stops San Francisco Newark
$1,816United Airlines

Price, demand and travel trends for Portland to Australia flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

What are the cheapest fares from Portland to Australia right now?

Here are the cheapest round-trip fares from Portland to Australia on KAYAK in the last week:

• Melbourne (MEL) from $1,556
• Sydney Kingsford Smith (SYD) from $1,602
• Perth (PER) from $1,932

Which airport in Australia is the cheapest to fly to from Portland?

Based on KAYAK data from the past 12 months, the cheapest airports to fly into Australia are:

• Melbourne (MEL) from $1,217
• Adelaide (ADL) from $1,821
• Sydney Kingsford Smith (SYD) from $1,852

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

Wednesday tends to be the cheapest day to fly from Portland to Australia, while Thursday is the most expensive. Fares run about 69% higher that day, based on the past 12 months of KAYAK data.

What's the cheapest time of day to fly from Portland to Australia?

Data from the past 12 months shows it's cheapest to fly to Australia during the evening with average prices of $1,089. The morning is the most expensive time to fly, with average prices of $2,723.

Find deals

Key details for Portland to Australia flights

Low season

January

Cheapest flight

$1,556
Beat the crowds with an average 88% drop in travelers.
The most popular month to fly with an average 94% increase in travelers.
Round-trip flight from Portland to Melbourne Airport

Your Portland to Australia flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Is now a good time to book a flight from Portland to Australia?

    Fares from Portland to Australia are around their usual level right now. A round-trip under $1,487 is considered a good deal, so it's worth keeping an eye out, or setting a Price Alert to catch price changes.

  • How much should I budget for a flight from Portland to Australia?

    Over the past 12 months, round-trip fares from Portland to Australia have ranged from $1,487 to $1,984.

  • What are the main airports serving Australia?

    Australia has 145 airports. The three busiest are Sydney Kingsford Smith (SYD) (50% of arrivals), Perth (PER) (25%) and Adelaide (ADL) (13%).

  • Which cabin classes are available on flights from Portland to Australia?

    On flights from Portland to Australia you can only book Economy Class.

  • What are some popular landmarks in Australia?

    KAYAK travelers' favorite landmarks in Australia include:

    • Sydney Opera House
    • Marvel Stadium
    • Melbourne Cricket Ground
    • Crown Casino

Your guide to booking Portland to Australia flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your travel dates are flexible, book your trip for August when flights are typically cheapest and avoid April when prices are at their highest.
  • Flying on Wednesday is usually the cheapest. Flights on Thursday cost about 69% more on average, so being flexible with your travel dates could help you save.
  • If you're looking to save, Melbourne (MEL) is the cheapest airport to fly into from Portland. If you have onward travel, don't forget to factor in the cost of your journey by train, bus or domestic flight.
  • Start your trip in Sydney, which is the most popular destination in Australia. From there, it's easy to continue on to other popular destinations such as Melbourne, Brisbane and Perth.

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.
7.0
American AirlinesOverall score based on 12167 reviews
7.2Comfort
6.4Food
7.9Crew
7.4Boarding
6.8Entertainment
Airline reviews

Both directions of our trip were befuddled by massive delays, one of which led to our connecting flight being grounded mid air due to storms that we’d have missed if we were on time. The other our originating flight was delayed repeatedly until it arrived at our connecting airport later than our final leg was even supposed to have arrived. American cannot seem to manage rebooking s for a family party… both directions we had to come up with a plan to get to Boston stay overnight only one night each direction was covered by the airline -and take a bus to or from our destination. Missed an entire leg of our trip, hotel cancellation fees, expensive stay in Boston and bus ticket expenses are unlikely to be comped and the meal vouchers are worthless.

2.0 MediocreKathryn, Aug 2026
Read more American Airlines reviews

Both directions of our trip were befuddled by massive delays, one of which led to our connecting flight being grounded mid air due to storms that we’d have missed if we were on time. The other our originating flight was delayed repeatedly until it arrived at our connecting airport later than our final leg was even supposed to have arrived. American cannot seem to manage rebooking s for a family party… both directions we had to come up with a plan to get to Boston stay overnight only one night each direction was covered by the airline -and take a bus to or from our destination. Missed an entire leg of our trip, hotel cancellation fees, expensive stay in Boston and bus ticket expenses are unlikely to be comped and the meal vouchers are worthless.

My flight was 4 hours delayed on departure at 6a causing me to miss my connection at DCA. I had to scramble to find a seat home on a later flight and instead of an exit seat, I was in row 30 on a flight getting me home 5 hours later than planned. The AA team on the ground did a fine job. AA continues to run the airline like the passengers are cargo.

Bad food, small seats that didn’t recline. I thought I was buying a quantas ticket so I feel like I got scammed

The plane was probably full boarding was easy. We were able to check our carry-on luggage for free. It was a return flight through Philly to LA. Never saw a stewardess do a demonstration of emergency Procedures. I think my flight was pretty full

Worst seats I’ve ever had !!! The seats were very narrow and uncomfortable and misaligned with the seats in front of mine leading to bottom of the seat in front of mine pressing on my legs for 15.5 hours !

DO NOT BOOK THROUGH AMERICAN AIRLINES IF YOU HAVE ANY ADDITIONAL NEEDS. Great flight, crew etc. it wasn’t full so had space to stretch out Only downside was there was no GF option for my partner. We booked through American and it was a Qantas flight so despite contacting both airlines to confirm, she didn’t have a gluten free meal for the 16 hour flight (nor the flight in the other direction). The flight attendants did their best to accommodate but it was not super substantial.

Crazy seating issues. We got seated far apart. Offered middle seats at a premium rate. Why is a middle seat now the expensive seat? Baffling.

The food at Admirals Club was really great Pijamas were a nice feature The flight attendant was very nice and great attitude The aa.com does not work well specially internet service Overall a very good flight .

Flight was delayed after boarding and no idea when it would take off. Crew in Portland did arrange for transport to Boston for a different set of flights to my destination.

Seats are so close together. Middle seats should be discounted.

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