$111 Find Cheap Flights from Boston to South America - Compare and Save

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 9/11. 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.
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1 adult, Economy, 0 bags

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Cheap Flights from Boston to South America

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Lima
Lima1 stop$539
Bogotá
Bogotá2 stops$363
Medellín
Medellín1 stop$450
Buenos Aires
Buenos Aires1 stop$760
Sao Paulo
Sao Paulo2 stops$542
Rio de Janeiro
Rio de Janeiro1 stop$681
Santiago
Santiago1 stop$613
Cartagena
Cartagena1 stop$433
Quito
Quito2 stops$449
Guayaquil
Guayaquil1 stop$403
Cali
Cali2 stops$411
Cusco
Cusco2 stops$654
Georgetown
Georgetown1 stop$511
Pereira
Pereira2 stops$437
Barranquilla
Barranquilla2 stops$411
Montevideo
Montevideo2 stops$857
Santa Marta
Santa Marta1 stop$448
Asuncion
Asuncion1 stop$723
Lima
Lima1 stop$539
Bogotá
Bogotá2 stops$363
Medellín
Medellín1 stop$450
Buenos Aires
Buenos Aires1 stop$760
Sao Paulo
Sao Paulo2 stops$542
Rio de Janeiro
Rio de Janeiro1 stop$681
Santiago
Santiago1 stop$613
Cartagena
Cartagena1 stop$433
Quito
Quito2 stops$449
Guayaquil
Guayaquil1 stop$403
Cali
Cali2 stops$411
Cusco
Cusco2 stops$654
Georgetown
Georgetown1 stop$511
Pereira
Pereira2 stops$437
Barranquilla
Barranquilla2 stops$411
Montevideo
Montevideo2 stops$857
Santa Marta
Santa Marta1 stop$448
Asuncion
Asuncion1 stop$723

Book Cheap Boston to South America Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to South America 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 Boston to South America

Thu, Sep 10 - Wed, Sep 16
Multiple Airlines Logo
10:20 pm - 12:30 pm
BOS
-
BOG
15h 10m
2 stops
Multiple Airlines Logo
9:40 pm - 8:50 pm
BOG
-
BOS
22h 10m
2 stops
$363Multiple Airlines
Wed, Oct 14 - Sun, Oct 25
Avianca Logo
4:50 pm - 2:00 am
BOS
-
BOG
10h 10m
1 stop
Avianca Logo
4:00 am - 2:50 pm
BOG
-
BOS
9h 50m
1 stop
$364Avianca
Wed, Sep 23 - Thu, Oct 29
Copa Airlines Logo
3:55 pm - 5:26 pm
BOS
-
BOG
26h 31m
1 stop
Copa Airlines Logo
10:40 am - 11:02 pm
BOG
-
BOS
11h 22m
1 stop
$383Copa Airlines
Tue, Aug 4 - Wed, Aug 12
American Airlines Logo
5:10 am - 12:35 pm
BOS
-
CTG
8h 25m
1 stop
American Airlines Logo
3:15 pm - 12:58 am
CTG
-
BOS
8h 43m
1 stop
$433American Airlines
Thu, Jul 16 - Sun, Jul 19
American Airlines Logo
6:56 pm - 12:35 pm
BOS
-
CTG
18h 39m
2 stops
American Airlines Logo
3:17 pm - 11:08 am
CTG
-
BOS
18h 51m
2 stops
$438American Airlines
Thu, Aug 6 - Thu, Aug 13
LATAM Airlines Logo
9:20 pm - 1:05 pm
BOS
-
CTG
40h 45m
2 stops
LATAM Airlines Logo
2:30 pm - 7:25 am
CTG
-
BOS
15h 55m
2 stops
$439LATAM Airlines
Fri, Oct 30 - Wed, Nov 11
Copa Airlines Logo
8:47 am - 1:20 am
BOS
-
LIM
17h 33m
1 stop
Copa Airlines Logo
2:15 am - 10:01 pm
LIM
-
BOS
19h 46m
1 stop
$541Copa Airlines
Mon, Sep 7 - Sun, Sep 20
Delta Logo
7:20 am - 9:40 pm
BOS
-
LIM
15h 20m
1 stop
Delta Logo
12:15 am - 3:15 pm
LIM
-
BOS
14h 00m
1 stop
$553Delta
Fri, Oct 16 - Fri, Nov 6
LATAM Airlines Logo
8:45 pm - 6:45 am
BOS
-
LIM
11h 00m
1 stop
LATAM Airlines Logo
9:00 am - 12:58 am
LIM
-
BOS
15h 58m
2 stops
$554LATAM Airlines
Sun, Aug 23 - Tue, Sep 1
Delta Logo
9:55 am - 2:50 am
BOS
-
SCL
16h 55m
1 stop
Delta Logo
11:00 pm - 3:22 pm
SCL
-
BOS
16h 22m
1 stop
$641Delta
Booking Insights

KAYAK's insights & trends for Boston to South America flights

Get data-powered insights and trends into flights from Boston to South America to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest Boston to South America flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to South America from Boston found in the last 5 days was to Bogotá, at $400 round-trip. The most popular route is from Boston (BOS) to Sao Paulo Guarulhos Intl Airport (GRU), and the cheapest round-trip airline ticket found on this route in the last 5 days was $488.

Can I save money by flying with a layover from Boston to South America?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $544, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Boston to South America?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boston to South America, 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 Boston to South America is March, when tickets cost $590 (return) on average. On the other hand, the most expensive months are December and February, when the average cost of round-trip tickets is $993 and $812 respectively.

How far in advance should I book a flight from Boston to South America?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Boston to South America, 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 Boston to South America, you should book around 2 weeks before departure, which saves you about 10% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 17 weeks before departure.

Good to know

Low seasonSeptember
Cheapest flight$111
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly with an average 35% 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 from Boston to South America 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 from Boston to South America with an airline and back 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 from Boston to South America up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • How many flights are there between Boston and South America per day?

    Each day, there are between 1 and 2 nonstop flights that take off from Boston and land in South America, with an average flight time of 7h 55m. The most common departure time is 8:00 am and most flights take off in the morning, while the most flights land at Sao Paulo Guarulhos Intl Airport. Each week, there are 7 flights. The most frequent day of departure is Thursday, when 29% of all weekly flights depart. The fewest flights depart on a Monday.

Reviews of the 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.
7.8
DeltaOverall score based on 8453 reviews
7.2Food
8.5Crew
8.1Boarding
7.8Comfort
7.8Entertainment
Airline reviews

I thought the service was very nice and pleasant. There were no hiccups and no issues so overall a good experience.

8.0 ExcellentAnonymous, Jun 2026
BOS - RDU
Read more Delta reviews

I thought the service was very nice and pleasant. There were no hiccups and no issues so overall a good experience.

It was a pleasant surprise to have complimentary Wi-Fi on the flight

Flight was delayed, we could have been notified earlier and in a consistent manner. App was not refreshing for another passenger to get the latest flight status. We could have stayed and waited at the hotel instead of waiting at the airport had we known the flight was going to delayed for more than 5 hours. The toilet is too tight, and needs to be cleaned more frequently (every hour). The entertainment screen froze, the touch screen not responding to touch. We were upgraded to comfort, it is more comfortable than regular economy seats.

The baggage belt was not updated on the Delta App and was displayed on the wrong belt board. Was not expecting this to happen.

The plan was delayed and left DC 90 minutes late. However, it showed a 20 minute delay on the delta app, then a 12 min delay. It turned out to be an hour delay. I found out where the plane was with flightaware. Stop keeping customers in the dark about what is going on.

Pilots lied about waiting on “paperwork”. Sat in the plane for over an hour, waiting on some papers to be printed according to the pilot and then all of a sudden he says good news maintenance is finally on their way. Maybe they can fix it before we get our paperwork. Ended up missing my connection in LaGuardia and as a result, had a fly home to Lexington instead of the Louisville airport. Then paid $100 to uber to Louisville since it was midnight by the time I got in. I wish they would just be transparent with passengers sometimes and not try to beat around the bush on why things are delayed.

One of the flight attendants was a little cranky. I appreciated the free wifi and plug to charge my laptop

The flight was smooth, the crew was great but the plane was quite old

The flight was delayed 90 minutes The Gate was wrong The Restroom on Aircraft was not clean There was a half used water bottle in my seat

Cabin was not pressurized properly. Several passengers had respiratory difficulties.

There should be a warning regarding the quality of the aircraft on the website as we reserve the tickets. There was no TV or any type of screen onboard. The wifi they offer is good for nothing. Traveling 9 hours straight with kids and no type of entetainment was horrible. I wish I had been informed prior so I could buy a ticket with another airline. The food was a joke too. A very tiny portion per passenger. They also charged $100 per checked bag. With United I used to pay $60. So, fair to say that I wont be flying Copa anymore. Their aircraft was super old, outdated, no entertainment, with nearly no onboard food.

Very strict carry on rules meant most of the plane had to gate check their luggage. As is often the case had things that were broken because of this, but I appreciated not being charged to gate check. Otherwise good flight and great crew once on the plane

I liked the meatloaf the chicken was awful but the plane was on time and got there and the staff was nice.

Boarding was quick & efficient; they gave boarding groups due priority; staff & air crew were very cordial and helpful, pleasant flight.

Very happy with my flight. I would definitely recommend it.

Did upgrade, travel in business it was great (more room I could sleep)

Placed us in the last rear row of the plane so could not recline seats because of the rear wall, and also made it more of a tight space when the passenger in front reclined their seat. While understand seat assignments, every passenger should be afforded a reclining seat. The odor control scent from the restrooms was overwhelming strong. My wife and I could not deal with it, and she suffered a terrible headache as a result. I kept getting hit by the crew since I was on the ilse seat. No apologies, nothing. They made me feel like I was supposed to take the beating for a 3 hr flight.

There was no individual at the front check in when I arrived. I waited for at least 15 minutes and walked around asking security/janitors if they could help and they did not have a solution. So I had to take my checked bag through security and they threw away some of my items. I ended up making it to the gate only a few minutes before it closed due to my waiting for an agent at check in.

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.

Honestly first time flying with delta and it was pretty good. All the process very smooth and crew was always nice and attentive.

Deleted flight made me loose my connection flight now stuck in Atlanta for a day

Apart of Sky miles delta. And they go everywhere in Brazil

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

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.

The flight was late. Please do not delay next time.

4 hours delay, awful food and missed all my connections because of the delay to be rebooks for a flight 10 hrs later back home and never actually make it to my final destination

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

Very unprofessional staff in the checking and boarding. There was no space for my carry-on bag, which is understandable for a full flight. However, the rudeness in answering my questions about my bag were unnecessary. Shaming and threatening a passenger to be left behind was something I had never experienced (I am 57 years old and a Skymiles member) before. At a minimum, the boarding staff (Krystal Mejia and her manager Dee) should undergo further training on cultural sensitivity and professional skills on speaking with passengers. Krystal, just because I have dark hair and “look Latina” does not mean I can speak Spanish. Your assumption and threatening words until the very ending of my boarding (door of the airplane) were not only unnecessary and stressful but something that a passenger should not experience before boarding.

Because I bought my ticket from Underpricer, I could not check in online. I could only check in at the airport and that was deeply frustrating because I had to arrive very early. The flight also departed 45 min late and passengers were given no explanations about why we were delayed. I was worried I would miss my connecting flight. Once on board, however, the flight was fine.

Terrible boarding and first class experience. Nice staff but overall disorganized, dirty plane.

The flight was delayed significantly and we sat on runway after landing for awhile. Best thing was the flight attendant, Jenny, in first class, who was very professional and attentive. She was excellent - the rest of the flight was not.

Early departure meant on time arrival. Only real problem was free internet had issues, although chatting with the internet help desk (you can do this via aainflight.com) got the issue resolved.

The staff and service on American Airlines were truly outstanding. I had requested wheelchair assistance for my mother due to her knee issues, and the team went above and beyond every step of the way—from boarding in Boston to our arrival in Chicago. Their care, professionalism, and attentiveness made the entire experience smooth and stress-free. I’m very grateful for the support they provided.

Found that the plane used for this short flight is smaller and therefore the seats are really squeezed tight.

Tv screens and movie selection v good. Friendly staff. They were really worried about max capacity and room for carryons. That is never fun but i had no problem finding space when I boarded.

Great experience. Good dinner and service. FA's were very nice and attentive.

Jill was the flight attendant in first class she was fabulous!! Best flight attendant I have had in years.!! And I fly every other week. Other can learn from her!!

The business steward was absolutely amazing! Smiles and kindness! Wish all AA flights are like this one!

The worst experience I've ever had because the "people" @ Avianca wouldn't let me fly because they said I needed a round trip ticket

Seating was tight. Seats don't recline. Initial flight was cancelled. Lost two days of vacation.

It was delayed and I lost my connection flight to Cali and I missed my Mom's funeral

I actually upgraded to the medium level of seats from basic and even doing that it may have been physically the most uncomfortable flight I have ever had. They packed everyone like is a train to death camp. It was a red eye so I hoped to get some sleep but it was physically impossible to find a comfortable way to rest. I met other folks on the same flight and they said the same thing. It was an utterly miserable flight and if I have any other options I will never fly with them again

Deplaning was a mess, I sat in business (seats are horrible) and the front door had a problem so we had to deplane from the rear exit. The stairs were not tall enough to reach so there was a large step down from the plane to the top of the stairs.

Staff are the rudest in the industry … awful customer service … will never fly Avianca again

Pros: we leave and arrive on time Cons: the most uncomfortable seats ever. You cant recline at all your seats. No entertainment No TVs flight attendants didn't provide even a glass of water. You have to go to back of the airplane and ask for one. I am Colombian and I remember seeing the flight attendants very neat, elegants which is or was a staple of Avianca.it was one with tennis shoes, no male up, the hair was messy... that was really odd.

Here we have another airline flying to Guatemala but doesn't have a plus or a less, just in the middle. Why? Well, first we don't have even free water Movie selection is poor Seats don't recline in some places Food selection is carb based Forgot to mention, customer service on the web is the worst. Good things; Very reliable on schedule Kind crew

Flew with our two children. Paid $380 to check two bags (one was overweight). They then left the bags behind on Sunday, December 21st, with all our family’s clothes and family Christmas presents. When we arrived at our destination they told us the bags had not arrived, and they thought (but didn’t know) they were still in Boston, but that there’d be a flight the next day and the bags would arrive the next day. The next day we found out there was no flight, now we’re hoping we get our bags before we fly back out. Meanwhile, trying to get any engagement or accurate information is a waste of time. The folks at the call center are just gatekeepers, who can’t connect with any departments that actually do things to solve a problem. Getting information is made deliberately difficult. My biggest regret is that I’ve had a number of awful experiences with Avianca traveling between the US and Colombia, and still let myself get suckered into buying these tickets because the schedule was great. 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.

Everything you need to know for your flight to South America

Information on your arrival and departure airports