PDX - BUE

$457 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 11/15. 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

Thu, Sep 18 - Wed, Oct 1
 Logo
7:21 am - 2:40 pmPDX-AEP
27h 19m2 stops
 Logo
5:00 pm - 1:24 pmAEP-PDX
24h 24m2 stops
$1,003
Find Deal
Thu, Sep 18 - Wed, Oct 1
 Logo
7:21 am - 11:45 amPDX-EZE
24h 24m2 stops
 Logo
3:40 pm - 1:24 pmEZE-PDX
25h 44m2 stops
$1,005
Find Deal
Thu, Sep 18 - Wed, Oct 1
 Logo
7:21 am - 2:40 pmPDX-AEP
27h 19m2 stops
 Logo
9:05 pm - 11:39 pmAEP-PDX
30h 34m3 stops
$1,062
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Mon, Dec 8 - Tue, Dec 16
United Airlines Logo
11:59 pm - 7:20 amPDX-EZE
26h 21m2 stops
United Airlines Logo
10:05 pm - 10:57 pmEZE-PDX
29h 52m1 stop
$1,116United Airlines
Find Deal
Wed, Oct 1 - Tue, Nov 4
LATAM Airlines Logo
1:48 pm - 4:05 pmPDX-AEP
22h 17m2 stops
LATAM Airlines Logo
8:25 pm - 11:54 amAEP-PDX
20h 29m2 stops
$1,118LATAM Airlines
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Thu, Sep 18 - Thu, Sep 25
United Airlines Logo
12:54 pm - 8:00 amPDX-EZE
15h 06m1 stop
United Airlines Logo
9:00 pm - 11:58 amEZE-PDX
18h 58m1 stop
$1,125United Airlines
Find Deal
Mon, Dec 8 - Tue, Dec 16
LATAM Airlines Logo
6:04 am - 6:40 pmPDX-AEP
31h 36m2 stops
LATAM Airlines Logo
5:15 pm - 7:08 pmAEP-PDX
30h 53m2 stops
$1,125LATAM Airlines
Find Deal
Wed, Oct 1 - Mon, Nov 3
American Airlines Logo
7:39 am - 7:20 amPDX-EZE
19h 41m2 stops
American Airlines Logo
10:25 pm - 11:09 amEZE-PDX
17h 44m1 stop
$1,130American Airlines
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Mon, Jan 12 - Sun, Feb 1
Delta Logo
12:55 am - 7:20 amPDX-EZE
25h 25m2 stops
Delta Logo
10:25 pm - 11:33 pmEZE-PDX
30h 08m1 stop
$1,175Delta
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Thu, Dec 11 - Mon, Dec 15
Delta Logo
6:30 am - 9:00 amPDX-EZE
21h 30m2 stops
Delta Logo
10:50 pm - 7:08 pmEZE-PDX
25h 18m1 stop
$1,184Delta
Find Deal
Booking Insights

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.

How much is a round-trip flight from Portland to Buenos Aires?

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 July, where tickets cost $1,272 (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 $1,555 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, which saves you about 14% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 22 weeks before departure.

Good to know

Low seasonSeptember
Cheapest flight$457
Best time to beat the crowds with an average 4% drop in price.
Most popular time to fly with an average 14% 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 $457 for a one-way ticket and $1,003 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, oneworld, and SkyTeam 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 $1,306 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 $1,247 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 7980 reviews
8.5Crew
7.9Entertainment
8.2Boarding
7.9Comfort
7.3Food
Airline reviews

Delayed and took off even later than the scheduled delay time

8.0 ExcellentAnonymous, Jul 2025DTW - SEA
Read more Delta reviews

Delayed and took off even later than the scheduled delay time

For a 69 year old with health problems I had the worse experience, no wheelchair when I entered a lady told me to sit and wait while a gentleman told me I had to walk to the Delta station, which I did. I had a carry on and a bag, and I was traveling with my service dog, which was on his carrier and the lady charged me for my carry on luggage, beside all the waiting cause of the delay, I had to walk to get my luggage cause no wheelchair showed up, I am so disappointed. I will get in touch with the company. I got home at 3:00 am, not good for my health situation.

Only issue was with seating. The economy fare we purchased did say there was no guarantee the three people in our party would be seated together, and we were not. At the gate, the agent told us more specifically, the fare we purchased meant we would be seated in middle seats only. This should just be made more obvious.

Great experience on Delta. Staff from baggage check to flight attendants were very courteous and professional. My only issue was a personal preference for pretzels instead of the chips and cookies that were offered.

There was no problems, just a little uncomfortable with seats that do not lay back a little

Always good but we must do something about people in rows ahead of you that don't put their seats back up when they are suppose to. And It's rough to not be able to even lean over to get something out of my purse.

Flight was delayed, 30+ bags had to be gate checked. Crew were very friendly!

Everything was good until we were boarding our connection flight in Atlanta, we were told to gate check our carry-on, but when we got inside the plane, there was plenty of room in the overhead.

Did not know my son and I had different seating arrangements. He was fine, but it was disappointing.

Flight was canceled, and no effort was made to help with rebooking, no hotel vouchers, no car transportation and minimal food voucher and most places for food were closed by the time the voucher was given. Waited for 3 hours for bags. Simply the worst travel experience I have ever had

I never got this flight. You sent me to Chile!!! And from Chile I got the other flight to São Paulo... I've arrived 7h latter than I was supposed to arrive because of Delta delays.

Because the flight was late, we lost the connection to Brazil. You, Delta delayed, and you Delta anticipated the door closing in 15 min from Miami to GRU. Why? It caused a lot of stress! I almost could not see my mother in law alive because of your delay.

Boarding was done by woman who insisted on strict standing in line policy; food was ok; entertainment minimal

Wider seats, better seat cushions, (I felt like there was a board I was sitting on). I had the chicken to eat but It neither tasted nor looked like chicken. The fruit was good.

I was in the last row and they sent me to check in my luggage last minute after boarding. I had to go through the crowd.

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.

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.

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.

It was delayed instead of departing at 9:20pm, we departed at 11pm… putting us in Columbus after 2am! It was awful. Had I known about the delay, I could have spent some time in the United Lounge… I was starving because I started my journey in Budapest… so I was exhausted and hungry. Plus I had to make new arrangements to be picked up at the airport in Columbus, instead of midnight it was 2:30 am after getting luggage and out of airport. Not feasible. I would have just stayed in Chicago for the night and gotten a morning flight.

Very poor delay in dfw was really bad n long

Our flight was 1.5 hours delayed. There was no weather for the inbound flight, so I don't understand why. This meant a VERY late arrival and only a quick nap before my morning flight.

Because of rescheduling, they had to put me on a flight that didn't go through Dallas

It was very difficult to stretch my knee out and I am very short. I also had a torn tendon in my knee which made it extra uncomfortable anyways. My husband is 6'2" and I can't imagine him flying in that plane.

3 hour weather delay followed by 1 hour (and counting) maintenance delay. UGH!

Couldn’t get the door on the plane to close leading to a nearly 2 hour delay. But, hey at least they didn’t cancel the flight.

Flight was cancelled 3 hrs AFTER etd. Thetefore Missed connection from JFK to New Zealand . No accommodation provided… This cost ne aporox 1000 USD in extra expenses and turned whst should have been a 24 hr trip ftom Boston - New Zealand into a VERY expensive , late 70+ hr nightmare … Complete nonsense!!!

After we'd boarded , they canceled the flight. The crew didn't even know , we just all received text messages. Then after they deplaned us , AA was just like "too bad, go F your self, we sure ain't gonna help you"

The plane was broken so we had to change planes.

The flight got delayed 2.5 hrs due to a maintenance issue that cause a domino effect. American should have spare planes for when something like this happens.

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