PDX - BUE

$476 Find Cheap Flights from Portland to Buenos Aires

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 Buenos Aires departing on 7/20. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Buenos Aires

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Buenos Aires, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Buenos Aires, as well as popular online travel agencies
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Cheap Flights from Portland to Buenos Aires (PDX-BUE)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Portland to Buenos Aires 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 round-trip flight deals from Portland to Buenos Aires

Mon, Dec 8 - Mon, Dec 15
United Airlines Logo
7:00 am - 9:20 amPDX-EZE
21h 20m1 stop
United Airlines Logo
10:05 pm - 5:51 pmEZE-PDX
24h 46m2 stops
$1,116United Airlines
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Mon, Aug 18 - Thu, Aug 28
LATAM Airlines Logo
4:55 pm - 6:35 pmPDX-AEP
21h 40m2 stops
LATAM Airlines Logo
3:40 pm - 10:22 amAEP-PDX
22h 42m2 stops
$1,120LATAM Airlines
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Tue, Aug 19 - Tue, Aug 26
Delta Logo
6:00 am - 9:45 amPDX-EZE
23h 45m1 stop
Delta Logo
7:40 am - 11:39 amEZE-PDX
31h 59m2 stops
$1,125Delta
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Thu, Sep 18 - Thu, Sep 25
Delta Logo
2:30 pm - 9:45 amPDX-EZE
15h 15m1 stop
Delta Logo
8:10 pm - 4:26 pmEZE-PDX
24h 16m2 stops
$1,130Delta
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Thu, Sep 18 - Thu, Sep 25
Air Canada Logo
7:40 pm - 2:30 pmPDX-EZE
38h 50m3 stops
Air Canada Logo
4:35 pm - 2:46 pmEZE-PDX
26h 11m3 stops
$1,195Air Canada
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Fri, Sep 5 - Wed, Sep 17
Air Canada Logo
7:40 pm - 2:30 pmPDX-EZE
62h 50m3 stops
Air Canada Logo
4:35 pm - 2:46 pmEZE-PDX
26h 11m3 stops
$1,197Air Canada
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Wed, Dec 10 - Tue, Dec 16
American Airlines Logo
12:08 pm - 9:10 amPDX-EZE
16h 02m1 stop
American Airlines Logo
10:30 pm - 4:44 pmEZE-PDX
23h 14m1 stop
$1,203American Airlines
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Sat, Nov 1 - Fri, Nov 7
Copa Airlines Logo
4:02 pm - 1:00 amPDX-EZE
28h 58m2 stops
Copa Airlines Logo
2:36 am - 10:56 pmEZE-PDX
25h 20m2 stops
$1,208Copa Airlines
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Sat, Nov 1 - Thu, Nov 6
Copa Airlines Logo
7:38 pm - 4:20 amPDX-EZE
28h 42m2 stops
Copa Airlines Logo
3:57 am - 10:56 pmEZE-PDX
23h 59m2 stops
$1,242Copa Airlines
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Sun, Dec 7 - Sun, Jan 11
American Airlines Logo
11:59 pm - 9:10 amPDX-EZE
28h 11m1 stop
American Airlines Logo
11:35 pm - 11:29 pmEZE-PDX
28h 54m1 stop
$1,417American Airlines
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KAYAK's insights & trends for Portland to Buenos Aires flights

Get data-powered insights and trends into flights from Portland to Buenos Aires to help you find the cheapest flights, the best time to fly and much more.

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

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

For Portland to Buenos Aires, Thursday is the cheapest day to fly on average and Friday is the most expensive. Flying from Buenos Aires back to Portland, the best deals are generally found on Saturday, with Monday being the most expensive.

What is the cheapest month to fly from Portland to Buenos Aires?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Portland to Buenos Aires, 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 Buenos Aires is August, where tickets cost $1,218 (return) on average. On the other hand, the most expensive months are December and March, where the average cost of round-trip tickets is $1,582 and $1,528 respectively.

How far in advance should I book a flight from Portland to Buenos Aires?

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 Buenos Aires, 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 Buenos Aires, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 22 weeks before departure.

Good to know

Low seasonMay
High seasonDecember
Cheapest flight$476
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly with an average 15% increase in price.
Flight from Portland to Buenos Aires Ministro Pistarini

When to book flights from Portland to Buenos Aires

Are your dates flexible? Find out the best times to travel from Portland to Buenos Aires based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Portland to Buenos Aires

  • What is the cheapest flight from Portland to Buenos Aires?

    In the last 3 days, the lowest price for a flight from Portland to Buenos Aires was $476 for a one-way ticket and $1,116 for a round-trip.

  • Do I need a passport to fly between Portland and Buenos Aires?

    Yes, you’ll need a passport to travel to Buenos Aires from Portland.

  • Which aircraft models fly most regularly from Portland to Buenos Aires?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Portland to Buenos Aires?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Portland and Buenos Aires, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Portland to Buenos Aires, Delta or LATAM Airlines?

    The two airlines most popular with KAYAK users for flights from Portland to Buenos Aires are Delta and LATAM Airlines. With an average price for the route of $1,371 and an overall rating of 8.0, Delta is the most popular choice. LATAM Airlines is also a great choice for the route, with an average price of $1,205 and an overall rating of 7.5.

  • How does KAYAK find such low prices on flights from Portland to Buenos Aires?

    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 Buenos Aires.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portland to Buenos Aires?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Buenos Aires from Portland is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Portland to Buenos Aires?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Buenos Aires with an airline and back to Portland with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portland to Buenos Aires?

    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 to Buenos Aires from Portland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from Portland to Buenos Aires

 
See real verified KAYAK customer reviews for airlines flying from Portland to Buenos Aires. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Portland to Buenos Aires? 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.
8.0
DeltaOverall score based on 7963 reviews
8.5Crew
7.3Food
8.2Boarding
7.9Entertainment
7.9Comfort
Airline reviews

The flight was scheduled for 2:30 PM. Early in the morning we got a text message saying the flight was delayed and rescheduled for 3:00 PM. We got to the airport with that in mind. Then we got a message during check-in at the flight was rescheduled again for 2:30 PM. We almost missed our flight. In fact, our bags Were told that they would not make it. At the end, everything worked out. But it is very stressful.

4.0 OkayKoonj, Jun 2025MSP - AUS
Read more Delta reviews

The flight was scheduled for 2:30 PM. Early in the morning we got a text message saying the flight was delayed and rescheduled for 3:00 PM. We got to the airport with that in mind. Then we got a message during check-in at the flight was rescheduled again for 2:30 PM. We almost missed our flight. In fact, our bags Were told that they would not make it. At the end, everything worked out. But it is very stressful.

Overall, aside from the baggage issue, it was as good as one expects.

Most aspects were good however if they assign boarding zones they ought to enforce them or why bother? My luggage from SAN-JFK-MAD was lost in NY so I without my main bag for two days upon arrival in Spain. They were helpful in tracking it and eventually delivered it to my hotel. The flub was because of a delay upon arrival in NYC. I had booked 2 1/2 hours between flights but we had to hold on the taxiway for an hour after landing while waiting for a clear gate which likely caused the baggage error.

I want to single out flight attendant Mitch who was in the Premium Economy section. When my wife’s hearing aide dropped through the cushion under the seat he was able to locate it and return it to her. Food was a different matter. Dinner was fine. Breakfast was another matter. They had a yogurt dish that the ran out of and the alternative was not very good according to those we talked to.

Excellent check-in. Crew was good. Excellent communication from flight deck.

Great overall. There was a bit of turbulence so they could only serve water because too much turbulence for the carts. Was glad they prioritized safety though

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

Flight was delayed long enough that I was misding my connecting flight. The agents could not get me on a comparable flight, nor could they get me s Main Cabin seat I had paid for, nor could they get me on a comparable connecting flight. The gate agent would not issue meal vouchers, even though I was delayed over six hours! I had to spend over an hour and 15 minutes with customer service on the phone to See if they could get me on a better flight and get a meal voucher. Customer service was not helpful enough in trying to find alternate flights and it Ended up taking me 24 hours for a 12 hour trip!! Delta does not provide upgrades NOR will they even give you a pass for a few hours to their lounge. They claim that they do not issue daily passes to their lounge anymore. I call BS since this would be no extra cost to them to provide excellent customer service and give you a few hours to relax in comfort when you’re sitting in a crowded airport and your flight has been screwed up for that many hours.

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

5 hours of delay that could've been much shorter if Delta had taken the 1 hour delay they imposed on the flight before boarding to run any of the plane checks required for flight to find the hydraulic issue that required nearly 3 hours to fix. $24 of meal credit buys a sandwich and a soft drink. Poor communication within the terminal about what gate we'd be re-boarding from and when we'd be re-boarding.

We didn’t have any entertainment. I tried to go online without success. The airplane was extremely cold and they didn’t have blankets.

It was good, however the airplane was really cold. We received snacks and the crew was friendly.

Delta has an outstanding service. They are courteous and punctual most of the time. The flight departed a half hour late but we arrived 15 minutes early.

Not sure why there are so many security checks at this airport. Consistently annoying showing passport over and over, checking carryons at gate all the while trying to make tight connection. Basically it was uncomfortable crowded cabin with meidiocre service

Although the flight is goof and the crew is good, the way the airline charges you for every service is ridiculous.

Plane never left the ground. Mech issues - entire trip was rerouted through united.

They didi not provide wheelchair though we had requested. We had to run around for 40 minutes and arrange it from the airport!

I liked everything, this was classed as premium economy but it was much better than Lufthansas business class. Lovely staff, comfortable plane and an excellent seat arrangement. A very pleasant surprise.

Everything was good except the check in. Could not do it online neither on the machines in the airport. Needed special assistance from the airline desk clerk

No entertainment but not expected. Unless you are referring to monitor that you can use. Then Al, was fine on all flights.

Gate agent did not hold flight for connection, provided no assistance to get new flight

Evidently, my seat had the only broken TV. I couldn’t plug it in, get it to come on, or watch anything, and of course, no one could fix it while we were on the plane. The service was good and the boarding was quick

United airlines, mediocre at best. No issues , nothing great . Worked for me

Boarding experience was smooth. Flight attendants were friendly and helpful. Entertainment system on the Houston-Edmonton flight did not function for passengers on the left side of the aisle. On the bird's eye flight from Quito to Houston, they should not serve a meal. No one needs to eat after midnight and it is disturbing for those passengers trying to sleep.

it was so bad. I tried to board my flight from vancouver to saskatoon. And to my surprise they did not board me cause the flight was changed and no email was send to me. and on my boarding pass which i got from seattle says different flight. I did not knew anyone from Vancouver, air canada crew was rude, i asked for today flight but they were rude and i had early morning dental appointment in saskatoon. I was so much in pain and my whole day is wasted today. and i suffered alot. They did provide me hotel but they did not provide me any food. I am really really disappointed first time had so bad experience with air canada. I may think twice to book it again. If i can get any reply or any composition that would be great. Thanks

It was fine, definitely older planes with no charging or anything. There’s no entertainment set up on board, but it is nice that they allow you to access the in flight entertainment from your phone without having to pay for the Wi-Fi and they do offer free texting.

Terrible. Out flight was delayed for 21 (twenty one) hours. United is a joke.

Boarding was mayhem. Late boarding by 15 minutes because of lack of staff (missing 1 flight attendant. We had to wait for an arrival of another plane before we could board). Flight was a little rough, but cannot blame on airlines.

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Very comfortable (upgraded to business class). The audio on my screen didn’t work, but I managed to play the audio through my phone while watching the screen.

Loved the staff, boarding and drink options! Wish the comfort of the seat could have been better nevertheless

The chair cushions may need an upgrade. I have been noticing they are so worn out, thin so you’d sit in a dip 😄. Other than that, all was an enjoyable trip. Thanks AA!

Food was terrible, all served at once, poor quality . Wine and bread offered only once.

I’m impressed that we were on time in Sacramento after having a late departure in Newark and our made it. The staff was friendly and warm.

Cramped seats. FAA should make airlines have more legroom, for even short people complain

5.5 hour delay with no explanation on why, along with no proactive effort to reaccomodate me.

It was one of my worst flight ever. First they were changing the gate for at least 4 times, changing from gate D7 to D12 to D44. Considering the size of the Miami Airport, we are talking about long distance and the train at the airport was not working. Then the flight was delayed around one hour. Then finally we boarded into the plane and when everybody was seated, there was an announcement that there is an issue with one of the tire of the plane, so we all had to get out of the plane with our belongings, to replace the tire. So we had around 2.5-hour delay

Most miserable flight ever. We waited almost 2 hours on the runway because the flight was oversold. American offered $1200 credit. Then there was some nonsense about weight distribution. Ridiculous. No food for 8 plus hours on the flight. I will be writing a letter.

Honestly, I haven’t flown American in years, probably due to the pandemic and my being unable to travel for certain periods in the last two years, but it was a good experience to dig out or obtain a new American Airlines account after many years of traveling for business with American in the past.

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

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