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Find cheap flights from Boston to South America from $102

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to South America departing on 5/28. 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
0 bags
Mon 5/27
Mon 6/3

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Best South America Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Lima
Lima2 stops$394
Bogotá
Bogotá1 stop$286
Buenos Aires
Buenos Aires3 stops$722
Medellín
Medellín1 stop$265
Sao Paulo
Sao Paulo2 stops$580
Cartagena
Cartagena3 stops$293
Santiago
Santiago2 stops$558
Rio de Janeiro
Rio de Janeiro3 stops$629
Quito
Quito1 stop$365
Guayaquil
Guayaquil1 stop$257
Cali
Cali2 stops$304
Cusco
Cusco2 stops$601
Pereira
Pereira3 stops$371
Barranquilla
Barranquilla2 stops$284
Montevideo
Montevideo3 stops$696
Caracas
Caracas1 stop$677
Santa Marta
Santa Marta2 stops$487

Good to know

Low season

September

High season

December

Cheapest flight

$102
Best time to beat the crowds with an average 16% drop in price.
Most popular time to fly with an average 45% increase in price.
Flight from Boston to Cartagena

FAQs - booking South America flights

  • How does KAYAK find such low prices on flights from Boston to South America?

    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 Boston to South America.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boston to South America?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to South America from Boston 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 Boston to South America?

    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 South America with an airline and back to Boston with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston to South America?

    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 South America from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to South America

  • Morning departure is around 8% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from Boston to South America

 
Need help choosing which airline to fly with from Boston to South America? 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 10951 reviews
8.2boarding
7.4food
7.9comfort
8.6crew
8.0entertainment
Airline reviews

Delta is one of the best airlines I have flown

10.0 ExcellentKellie, Apr 2024ANC - SEA
Read more about Delta reviews

Delta is one of the best airlines I have flown

Made the Atlanta to Pittsburgh trip many times, with Delta no issues

I always fly with Delta. My friends tell me their horror stories of flying with other airlines. I just smile and say, “You should fly Delta”

I'm a larger, athletic guy (6'2", 260lbs powerlifter) and I found the seats incredibly uncomfortable with minimal leg room, especially in a window seat. Now, I full understand that being smaller may change my view but even if I was 80lbs less, my legs would be the same size and I was sandwiched between my seat and the seat in front of me.

Horrible. This was not first class. This was a connecting flight whi h was late. My original flight never came. I hated the fact that delta gave me a connecting flight from New York to Orlando Florida. No meals and the television screens were not working. There wasn't even any power to charge your phones. This is NOT FIRST CLASS DELTA!!! Do better next time!

This flight was ridiculous. I had to have a connecting flight from New York to orlando Florida??? The flight left late and because it was a short flight there was no first class amenities. I had one alcohol drink. The flight crew was fine, but it sure did not feel like first class. Delta to me dropped the ball by giving me a connecting flight. By the time we got to Raleigh we would have missed the next flight. Lucky for me the flight never came so now I was stuck waiting for a later flight that came in late also.

Our flight was delayed in Atlanta. The staff could have gave us an explanation for the delay and how long it would be.

I liked the ease of checking in, luggage check in, wheel chair assistance, boarding and flight.

On my way home I had a layover. The flight from ATL to CLT was amended 5x while I was waiting. I could have driven home sooner. Overall from Dallas, Tx to Charlotte, NC I started my trip at 4:30pm, I didn’t get home until past midnight. I know things happen, but 5x to make me run back and forth in an airport from different terminals is excessive. I also upgraded to comfort + , I didn’t feel it was worth it. There was no benefit

On my way home I had a layover. The flight from ATL to CLT was amended 5x while I was waiting. I could have driven home sooner. Overall from Dallas, Tx to Charlotte, NC I started my trip at 4:30pm, I didn’t get home until past midnight. I know things happen, but 5x to make me run back and forth in an airport from different terminals is excessive.

Copa performed as expected for the amount of money I was willing to spend for the flight; it wasn’t exceptional but it was not bad in any way either. The crew was good; friendly and straightforward. The food was airplane food, so no expectations there and the entertainment was lacking but that was my fault for owning an IPhone with a charging port that’s not compatible with the rest of the world. I’d fly Copa again.

Left my bags in origin city on a business class ticket , spent about 2-3 days in the same clothes plus the flight .

the planes are not modern there are no phone chargers

As usual, the flight with normal legroom was not very comfortable, but the second flight was much better because we had paid for extra legroom. It was very nice to check our bags without an extra fee.

LOCKED MY BAG WITHOUT CONSENT. Had to have my zippers cut upon arrival in Costa Rica.

Pros: "The seats in economy were confortable. The best thing was Copa gave us seats in the second line and my family traveled together."
Cons: "Coffe service could better the experience"
Pros: "The crew was very interested on help and attentive with the passengers. But the seat wasn't comfortable. The design of the cushion is not the best to be seating"
Pros: "You were on time, that is the most important thing in a fly"
Cons: "You could improve your entertainment, you are not a cheap company"
Pros: "That there was seltzer"
Cons: "The management of preparing the flight and plane so that it was ready for the trip!!"
Pros: "Copa was convenient and easy. Very easy boarding process and I appreciated the day flight."
Cons: "This is a business class that is equivalent to a US carrier domestic first class. Good seats, not lay flat but wide on my 737-800. The food and service emulated say American Airlines Domestic 1C as well. Everything was just good enough, and much cheaper that international business on the majors."

Everything was as you would expect in coach - fine. Flight was close to on time.

It was confusing because I got a notification that my gate was changed when in reality it wasn’t

Everthing ok , crew very nice but but we had a bad experience with the wheel chair we had to wait too much for the chair, my husband couldn’t walk and he was in lot of pain , LATAM has to take care of that

No air in the middle rows. Had a hard time breathing. Was dying of heat.

Horrific checkin procedure with neither Delta nor Latam figuring out how to check me in. 4 hrs on customer support with both and both airlines pointing to each other who should do checking. I was not checked in until morning of flight, which for international flight is concerning.

It was ok for the most part, it is missing something

It was a good experience, the flight was a little too long & the food was ok

Hostile flight attendants. Second flight with Jose so much better. Arrived 1/2 hour early. Thanks.

We had 2 delayed LATAM flights in our trip. We were only given one coffee for 5 hours delay. Also when we were boarding the crew wanted to charge us for our allowed carry on luggage. I got a bit angry and they finally didn’t charge anything. Not flying with LATAM again.

the flight from Boston to Curitiba was on time actually 30 minutes earlier. latam was not able to unload the luggage for custom checkup in Sao Paulo ii took two and half hours . i missed the flight to Curitiba spend the night in hotel and then flying in the morning to Curitiba

No water for a 5 hour flight entertainment not working seats with little room for knees when person in front of me reclined kept bumping my knees.

I don't think anyone actually reads these comments, so I won't spend much time on this submission. If you want to talk, you know how to reach me. The D/FW manager of Avianca (self-identified), Juan Calderon, insisted I buy an onward ticket from San Salvador even though I have diplomatic status in El Salvador and live here. It cost me $1,393 and Mr Calderon would not let me make the ticked flexible so I could get a refund. He went out of his way to be rude to me. He gave me seat 32K -- windowless window seat in the last row and did not offer to let me upgrade even though there were plenty of seats. I have flown well over a million miles in my life and this is the worst experience I have ever had. I would like a refund on the ticket I was forced to buy. Just awful!

This is the Spirit of Latino travel. And don’t even get me started on customer service.

Awful. I checked in online and there was no option to pay for baggage, at the airport when I checked in my baggage was received and Iwas not charged. When I got to LA during the boarding process I was told I didn't pay for baggage, the crew resolved I was let in the plane. When I got to my final destination my baggage was not there. It took me two days to receive my baggage. Bad service ever!

There was no food or drink service, couldn’t even get a glass of water for free. It was a long and expensive flight to not offer food or beverage on the plane.

It is better at the jfk than my home country. It was very easy and everything was on time.

There is no food. There is no in-inflight entertainment. The seats are cardboard. The airline is a living hellscape.

My experience was amazing! They helped my elderly mother board on early through a wheelchair and were accommodating to have us sit together since our seats were in different locations. When landing at the airport in GUA they were very helpful with full of hospitality.

No complimentary snacks food, beverage (not even water), pillow and blanket on a 6 hours long flight (including economy comfort). A low form of nickeling an diming. Lost a recurring passanger over a soda. Avianca never again.

Flight departure late. Got late in Colombia making us take a different flight next day. Avianca airport crew messed up my ticket so when a I got in Brazil I didn’t have a ticket for my destination. Had to buy a new ticket out of my pocket.

I think the seats on some of their planes are uncomfortable. You can be ok on a short flight of two hours but no more than that. The delays, and also the refreshments on the plane were not enough.

Flight delayed over an over all day until it cancelled at 1:30am. Would not repeatedly delay that late. Offer hotel rooms and rebook early. Very difficult for families with small children

Not sure why JAL partnered with American Airlines because their service is no where near similar. Flight attendants were not friendly and didn’t smile. Food was horrible…

this is starting to seem like an american airlines standard. delayed flights and fake apologies… getting tired of it

Terrible boarding , Business class seats are sub standard. As usual crew will miss your food too

Just get Economy Plus for international flights, so worth it the extra room, bigger seats…

This flight is frequently delayed. The connections seemingly are more frequently delayed. I’ve missed connections as a result twice on the same route to charlotte then Charleston. Final destination arrival has been the next day, twice in a row. No pilots, no crew. Too many excuses. Unfortunately, my days with American are over.

Entertainment was okay not because anything was wrong but it is a short flight so having no wifi is annoying but understandable. Crew was outstanding as usual

It was spectacular. I had basic Economy and was given so much space and their seats lean back so far. Staff was superb, food was superb, everything was superb, Finnair is Fantastic.

Those seats were way too narrow. I had the middle seat, one person was a very skinny person and we still couldn’t avoid touching each other anytime one of us moved. The other person was larger and we were basically sitting in each others lap the entire flight. There was zero entertainment. The flight was long enough to justify tvs, but no. Gotta sit there in your infant seat and twiddle your thumbs.

Book cheap flights from Boston to South America

Recent round-trip flight deals

5/14Tue
1 stopSpirit Airlines
8h 04mBOS-MDE
6/4Tue
1 stopSpirit Airlines
16h 21mMDE-BOS
$265
5/18Sat
1 stopSpirit Airlines
16h 54mBOS-MDE
5/25Sat
1 stopSpirit Airlines
9h 43mMDE-BOS
$280
5/7Tue
1 stopAvianca
8h 52mBOS-MDE
5/12Sun
2 stopsAvianca
15h 41mMDE-BOS
$313
5/7Tue
1 stopAvianca
12h 37mBOS-MDE
5/12Sun
1 stopAvianca
14h 48mMDE-BOS
$316
5/13Mon
1 stopCopa Airlines
17h 58mBOS-MDE
5/18Sat
1 stopCopa Airlines
9h 00mMDE-BOS
$323
6/13Thu
1 stopCopa Airlines
18h 09mBOS-MDE
6/18Tue
1 stopCopa Airlines
11h 42mMDE-BOS
$329
5/19Sun
2 stopsLATAM Airlines
21h 01mBOS-CTG
5/24Fri
2 stopsLATAM Airlines
14h 48mCTG-BOS
$334
5/12Sun
1 stopLATAM Airlines
15h 16mBOS-MDE
5/20Mon
2 stopsLATAM Airlines
22h 01mMDE-BOS
$339
8/19Mon
2 stopsAmerican Airlines
17h 37mBOS-CTG
9/12Thu
2 stopsAmerican Airlines
18h 47mCTG-BOS
$355
5/18Sat
1 stopAmerican Airlines
19h 38mBOS-CTG
5/25Sat
1 stopAmerican Airlines
8h 13mCTG-BOS
$366

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Recent one-way flight deals

5/28Tue
1 stopSpirit Airlines
19h 21mBOS-CTG
$102
5/28Tue
2 stopsSpirit Airlines
16h 23mBOS-CTG
$105
5/16Thu
1 stopCopa Airlines
18h 10mBOS-MDE
$134
5/3Fri
1 stopAmerican Airlines
10h 21mBOS-MDE
$137
5/16Thu
1 stopAvianca
8h 52mBOS-MDE
$138
5/11Sat
2 stopsAvianca
12h 34mBOS-MDE
$139
6/1Sat
2 stopsLATAM Airlines
16h 16mBOS-MDE
$147
5/1Wed
1 stopCopa Airlines
17h 58mBOS-MDE
$148
5/14Tue
2 stopsAmerican Airlines
13h 07mBOS-UIO
$149
5/3Fri
2 stopsLATAM Airlines
16h 31mBOS-MDE
$157

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Last minute flights from Boston to South America

Last minute flight, train and bus deals

4/30Tue
multi-stopSpirit Airlines
8h 01mBOS-MDE
6/17Mon
multi-stopSpirit Airlines
16h 21mMDE-BOS
$299
4/28Sun
multi-stopAmerican Airlines
8h 31mBOS-MDE
5/4Sat
multi-stopAmerican Airlines
13h 58mMDE-BOS
$335
5/2Thu
multi-stopCopa Airlines
18h 10mBOS-MDE
5/16Thu
multi-stopCopa Airlines
8h 48mMDE-BOS
$337
4/29Mon
multi-stopLATAM Airlines
15h 16mBOS-MDE
5/3Fri
multi-stopLATAM Airlines
9h 17mMDE-BOS
$349
4/29Mon
multi-stopLATAM Airlines
13h 01mBOS-MDE
5/3Fri
multi-stopLATAM Airlines
9h 17mMDE-BOS
$354
4/30Tue
multi-stopAvianca
17h 25mBOS-UIO
5/8Wed
multi-stopAvianca
8h 50mUIO-BOS
$365
4/30Tue
multi-stopAvianca
17h 25mBOS-UIO
5/28Tue
multi-stopAvianca
11h 20mUIO-BOS
$366
5/1Wed
multi-stopCopa Airlines
8h 25mBOS-CTG
5/11Sat
multi-stopCopa Airlines
8h 42mCTG-BOS
$405
4/28Sun
multi-stopDelta
18h 10mBOS-LIM
5/21Tue
multi-stopDelta
16h 19mLIM-BOS
$463
4/30Tue
multi-stopDelta
13h 55mBOS-LIM
5/7Tue
multi-stopDelta
23h 15mLIM-BOS
$468

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Boston - South America Flights

Departure:

Boston (BOS)United States

Return flight deals:

South America - Boston

Cabin classes:

$2,697
$2,536
$320