PDX - BUE

$446 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 5/3. 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, 0 bags

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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Everything you should know

Cheapest round-trip
$1,031
Overall average: $1,362
LATAM Airlines
Tue 4/14Tue 4/28
PDX - EZE • 1 stop
Cheapest one-way
$446
Multiple Airlines
Sun 5/3
PDX - AEP • 3 stops
Top airlines
LATAM Airlines
Cheapest • from $1,031 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
October
Cheapest • 11% price drop
October
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Buenos Aires!
Flight Deals
Booking Insights
Flight Deals

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

Tue, Apr 14 - Tue, Apr 28
LATAM Airlines Logo
6:28 am - 9:45 am
PDX
-
EZE
23h 17m
1 stop
LATAM Airlines Logo
3:55 am - 10:41 am
EZE
-
PDX
34h 46m
2 stops
$1,031LATAM Airlines
Tue, Apr 14 - Wed, Apr 29
LATAM Airlines Logo
6:30 am - 4:00 pm
PDX
-
AEP
29h 30m
2 stops
LATAM Airlines Logo
3:45 pm - 12:06 pm
AEP
-
PDX
24h 21m
2 stops
$1,031LATAM Airlines
Tue, Apr 14 - Wed, Apr 29
LATAM Airlines Logo
4:35 pm - 7:40 pm
PDX
-
AEP
23h 05m
3 stops
LATAM Airlines Logo
3:45 pm - 12:06 pm
AEP
-
PDX
24h 21m
2 stops
$1,047LATAM Airlines
Mon, Apr 13 - Wed, Apr 29
Multiple Airlines Logo
7:00 am - 8:35 am
PDX
-
EZE
21h 35m
1 stop
Multiple Airlines Logo
3:55 am - 10:41 am
EZE
-
PDX
34h 46m
2 stops
$1,067Multiple Airlines
Mon, Apr 13 - Wed, Apr 29
Multiple Airlines Logo
7:14 am - 6:20 am
PDX
-
EZE
19h 06m
2 stops
Multiple Airlines Logo
3:55 am - 10:41 am
EZE
-
PDX
34h 46m
2 stops
$1,072Multiple Airlines
Mon, Jun 8 - Tue, Jun 16
LATAM Airlines Logo
10:00 am - 11:30 am
PDX
-
EZE
21h 30m
2 stops
LATAM Airlines Logo
8:30 pm - 12:13 pm
EZE
-
PDX
19h 43m
2 stops
$1,073LATAM Airlines
Thu, Apr 16 - Sun, Apr 26
LATAM Airlines Logo
4:35 pm - 6:21 pm
PDX
-
EZE
21h 46m
3 stops
LATAM Airlines Logo
3:45 pm - 7:05 pm
EZE
-
PDX
31h 20m
2 stops
$1,081LATAM Airlines
Tue, Apr 14 - Sun, Apr 26
LATAM Airlines Logo
4:35 pm - 7:40 pm
PDX
-
AEP
23h 05m
3 stops
LATAM Airlines Logo
8:05 pm - 10:41 am
AEP
-
PDX
42h 36m
2 stops
$1,081LATAM Airlines
Tue, Apr 14 - Sun, Apr 26
LATAM Airlines Logo
4:35 pm - 6:21 pm
PDX
-
EZE
21h 46m
3 stops
LATAM Airlines Logo
7:35 am - 7:05 pm
EZE
-
PDX
39h 30m
3 stops
$1,084LATAM Airlines
Mon, Jun 8 - Tue, Jun 16
LATAM Airlines Logo
6:04 am - 9:45 am
PDX
-
EZE
23h 41m
1 stop
LATAM Airlines Logo
3:55 am - 10:44 am
EZE
-
PDX
34h 49m
2 stops
$1,089LATAM Airlines
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?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Portland to Buenos Aires departing in April.

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 October, where tickets cost $1,200 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is $1,631 and $1,578 respectively.

Good to know

Low seasonSeptember
Cheapest flight$446
Best time to beat the crowds with an average 2% drop in price.
Most popular time to fly and prices are also 12% lower on average.
Flight from Portland to Buenos Aires Jorge Newbery

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 $446 for a one-way ticket and $1,031 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?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Portland and Buenos Aires, with oneworld 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 $1,294 and an overall rating of 7.9, Delta is the most popular choice. LATAM Airlines is also a great choice for the route, with an average price of $1,281 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.
7.9
DeltaOverall score based on 8123 reviews
7.8Entertainment
8.1Boarding
7.2Food
7.9Comfort
8.5Crew
Airline reviews

It was last minute due to weather - considering - it was amazing! Good smiles, friendly staff and they were making sure we knew what was going on when and where.

10.0 ExcellentZebrina, Jan 2026
LGA - CAE
Read more Delta reviews

It was last minute due to weather - considering - it was amazing! Good smiles, friendly staff and they were making sure we knew what was going on when and where.

delta last minute gave me a boarding pass for a different flight with no confirmation that they were changing it

The flight was comfortable and uneventful, which is what I desire

The service from the flight attendants were of supreme quality. They greeted and treated everyone with a wide smile. This is totally absent nowadays. Kudos to them!!!!

Excellent flight and got us around tough weather. Only issue was seat TV did not work and crew tried to reboot.

Very large passenger too space from my own seat. Arm board couldn’t be lowered because of his size. It wads very uncomfortable trip, as the flight was full couldn’t move anywhere having back pain because of the position in which I was the entire flight.

was sitting in the jet bridge for 10 minutes in -20 degree weather waiting for my bag

Outdated equipment in disrepair, wifi inoperable. Broken seats, taped air vents, generally poor condition, the 717 showed its age and lack of upkeep.

My flight out of Baton Rouge to Atlanta was delayed by a half hour. This got us into Atlanta airport 30 minutes late. I ran through the airport to get to my connecting flight. As I approached the boarding gate, I saw the boarding door was still open and a passenger was being checked in. But when I got to the gate, the boarding agent told me they had already given away my seat and there were no empty seats on that flight. So I had to take a later flight. That has never happened to me before. Very frustrating.

Connection through Atlanta was difficult. Mechanical issue on plane caused a two hour delay. New gate was a mile away.

Latam wouldn’t tell me how much checked luggage would until I was at the airport and they charged me the highest price possible. Besides that, it was okay.

Comfort in exit seat was excellent. FLight crew and flight were excellent. However exit seat tray table was broken so could not use it. Entertainment monitor did not work at all despite attempts to reset it.

LATAM’s crews are fine, but God help you if you need any customer service. Their app and website never work, with error after error. Trying to solve anything over the phone is painful, and lastly, the boarding pass LATAM gave me to board the flight with Delta was invalid and I had to purchase an emergency one-way ticket at the last minute to get home.

We traveled with two young children, and it was not possible for our family to be seated together. No one offered help or assistance to organize seating so we could sit with our kids. In the end, we managed to find two seats in Economy so I could at least sit with one of them, even though I had originally paid for Comfort+. In summary, I had to downgrade my seat just to be able to sit with one of my children, which was very disappointing

I booked a flight through Kayak to Brazil I have traveled to Brazil several times before Kayak Delta or LATAM never mentioned during the booking or in the pre flight process that the visa requirements to visit Brazil have changed earlier this year. I was unaware of this change and as such never got a visa and was unable to fly from JFK to Sao Paulo Add to this that Delta allowed me to fly from Boston to JFK which they should not have as I didn’t have a visa. It has been a terrible experience and a huge loss of money

Good flight, boarding ok and crew very nice. Flight was not full so I was able to be very comfortable. Blanket and pillow provided with was good as it was very cold during the flight . Food was very good(small snack sandwich and an excellent piece of orange cake). Overall good flight, no complaints.

Latam may be the worst airline in the world, far worse than even the lowest of low cost airlines in the USA. I wasted hours trying to PAY THEM TO CHECK A BAG! Then they misled me at the terminal, sent me through the wrong security line, the list goes on and on... Just absolutely terrible in every way. Avoid at all costs.

Poor, the airline was not able to help me move flights.

Check in -- in business took over 30 mins as there was only one attendant. Boarding was also a mess. The seat was too narrow and was not working properly. Food was very bad and the entertainment very poor. Crew was very polite and helpful, in fairness.

we were missing our luggage, trying to find someone to have any empathy was pretty much not happening....

In overall it was a good experience, the only down point was that the entertainment screen was working properly.

HORRIBLE, my initial flight was cancelled, they made me pay $200 extra dollars and that got cancelled as well! After 6 cancellations I decided to get a refund because I needed to get home to my babies. Out of $1000+ dollars they offered me only $40 in refund! Totally unacceptable! The flight that they cancelled I was able to fly it on another airline. I had to spend $400 on one way tickets just to get home! I’m still getting the runaround.

First class ticket gets you a choice of chips or nuts. . Just like economy Southwest. Also no screen in the seats. This is first class???!

Seated dude next to me even though lots of empty rows. But main thing was we sat on the tarmac after landing for 30 minutes because of, in the words of the dude who sat next to me, “operational incompetence”. We got changing directions about where to pick up gate checked bags. Pilot and flight attendant were awesome though.

The food was terrible this time. Otherwise pleasant, quiet, on-time.

It was a pretty standard flight... until the almost hour and a half spent on the taxi way. I get that the weather has been poor but the delay had nothing to do with the weather and more to do with a plane with several issues tying up the gate. I get that that happens from time to time but this has been EVERY flight I've been on for the past 5 years and I fly 3 to 5 times a year. This isn't just United... it's American, it's Delta. It's an issue with the entire industry. I work for UPS and packages on a cargo plane get better service than people do these days. Anymore I HATE flying.

Flight arrived 30 min early and bag was waiting at the baggage pickup. United Club HNL was one of the nicest in the system

Unfortunately weather delayed our flight waiting for our plane to arrive and due to a little snow time was needed to deice the plane so departure was very delayed and I missed the connecting flight

Very good. Because of the delays with my previous flight, I missed my connection, but I was able to book another flight through the United app easily.

I wish there were outlets to charge my iPhone. The crew was great; we had a female pilot who was great with explaining what was happening and delays,

On time on a day with lots of weather cancellations on other flights. Thank you for getting me home during a winter storm!

Don't change gate multiple times make people run across the airport. Announce delays in a timely manner. Have maintenance crew ready. Don't delay and keep passengers on the plane for 3 hrs. on tarmac.

The plane was experiencing problems with the HVAC system, it was very cold in the front of the plane and very hot in the back.

My flight to London from Philadelphia was cancelled due to weather.

The attendants were kind and helpful. A sugar-free drink would have been very welcome.

Pilot navigated severe weather/snow storm with skill. Described his intentions clearly

one crew said "he" didn't serve double alcohol drinks for travelers in exit rows. crew on prior flight did. Is this a AA rule, and the prior crew was being nice? Also, I think we deserve more than a 25% refund for losing first class seats when rescheduling a flight due to weather

It was a little concerning to hear the ground crew arguing with the flight crew over baggage space. Instead of taking them and checking them, they started checking for space in the first class cabin moving items around like the flight crew didn't know what they were doing. I was embarrassed for them.

2 hour delay due to equipment failure. No updates via the app and airport screens (which continued to show a departure time in the past). AA eventually switched planes and the new plane was not catered or cleaned correctly.

I booked an aisle seat and was given a middle. At 6'4" 230lbs, it is not ideal to fly in the middle row for myself and passengers.

Everything you need to know for your flight from Portland to Buenos Aires

Information on your arrival and departure airports