$82 Find Cheap Flights from Boston to South America

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 9/13. 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

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Flight Deals

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$386
Bogotá
Bogotá1 stop$245
Medellín
Medellín1 stop$207
Buenos Aires
Buenos Aires1 stop$701
Sao Paulo
Sao Paulo1 stop$494
Rio de Janeiro
Rio de Janeiro1 stop$507
Cartagena
Cartagena1 stop$241
Santiago
Santiago1 stop$503
Quito
Quito1 stop$306
Cali
Cali1 stop$256
Guayaquil
Guayaquil2 stops$357
Cusco
Cusco2 stops$635
Georgetown
Georgetown1 stop$410
Pereira
Pereira2 stops$413
Montevideo
Montevideo2 stops$807
Barranquilla
Barranquilla1 stop$276
Santa Marta
Santa Marta2 stops$476
Florianopolis
Florianopolis1 stop$613
Lima
Lima1 stop$386
Bogotá
Bogotá1 stop$245
Medellín
Medellín1 stop$207
Buenos Aires
Buenos Aires1 stop$701
Sao Paulo
Sao Paulo1 stop$494
Rio de Janeiro
Rio de Janeiro1 stop$507
Cartagena
Cartagena1 stop$241
Santiago
Santiago1 stop$503
Quito
Quito1 stop$306
Cali
Cali1 stop$256
Guayaquil
Guayaquil2 stops$357
Cusco
Cusco2 stops$635
Georgetown
Georgetown1 stop$410
Pereira
Pereira2 stops$413
Montevideo
Montevideo2 stops$807
Barranquilla
Barranquilla1 stop$276
Santa Marta
Santa Marta2 stops$476
Florianopolis
Florianopolis1 stop$613

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

Wed, Sep 10 - Fri, Sep 19
Spirit Airlines Logo
3:00 pm - 12:28 amBOS-MDE
10h 28m1 stop
Spirit Airlines Logo
1:24 am - 11:13 amMDE-BOS
8h 49m1 stop
$207Spirit Airlines
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Tue, Sep 16 - Fri, Sep 19
Spirit Airlines Logo
3:00 pm - 12:28 amBOS-MDE
10h 28m1 stop
Spirit Airlines Logo
1:24 am - 11:13 amMDE-BOS
8h 49m1 stop
$213Spirit Airlines
Find Deal
Tue, Sep 16 - Mon, Sep 22
Copa Airlines Logo
3:49 pm - 11:00 pmBOS-CTG
8h 11m1 stop
Copa Airlines Logo
6:20 am - 7:22 pmCTG-BOS
12h 02m1 stop
$332Copa Airlines
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Sat, Sep 6 - Fri, Sep 12
LATAM Airlines Logo
5:35 am - 1:18 pmBOS-CTG
8h 43m1 stop
LATAM Airlines Logo
7:00 am - 11:26 pmCTG-BOS
15h 26m2 stops
$335LATAM Airlines
Find Deal
Fri, Sep 5 - Thu, Sep 25
LATAM Airlines Logo
7:15 am - 6:53 amBOS-CTG
24h 38m2 stops
LATAM Airlines Logo
4:52 am - 11:26 pmCTG-BOS
17h 34m2 stops
$336LATAM Airlines
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Sat, Sep 27 - Sun, Oct 5
Delta Logo
5:35 am - 1:16 pmBOS-CTG
8h 41m1 stop
Delta Logo
6:42 am - 3:26 pmCTG-BOS
31h 44m2 stops
$347Delta
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Mon, Oct 20 - Sat, Oct 25
American Airlines Logo
4:37 pm - 12:25 pmBOS-CTG
20h 48m2 stops
American Airlines Logo
1:25 pm - 10:16 amCTG-BOS
19h 51m2 stops
$348American Airlines
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Tue, Sep 23 - Sat, Oct 11
Delta Logo
5:35 am - 10:58 pmBOS-CTG
18h 23m2 stops
Delta Logo
2:30 pm - 1:13 amCTG-BOS
9h 43m1 stop
$350Delta
Find Deal
Tue, Oct 21 - Wed, Nov 12
American Airlines Logo
7:30 pm - 12:25 pmBOS-CTG
17h 55m2 stops
American Airlines Logo
2:34 pm - 12:46 amCTG-BOS
10h 12m1 stop
$353American Airlines
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Thu, Sep 11 - Sat, Sep 20
Copa Airlines Logo
8:41 am - 11:20 pmBOS-CNF
13h 39m1 stop
Copa Airlines Logo
12:20 am - 7:22 pmCNF-BOS
20h 02m1 stop
$438Copa Airlines
Find Deal
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 72 hours was to Bogotá, at $417 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 72 hours was $480.

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 $801, 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 November, when tickets cost $472 (return) on average. On the other hand, the most expensive months are December and July, when the average cost of round-trip tickets is $976 and $712 respectively.

What’s the cheapest day of the week to fly from Boston to South America?

The average price of all round-trip flights from Boston to South America clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Boston to South America, look for departures on Mondays and avoid leaving on a Saturday, as it's usually the priciest day. When flying back from South America, Tuesday is the cheapest day to fly and Saturday is the most expensive.

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 3 weeks before departure, which saves you about 18% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Good to know

Low seasonSeptember
Cheapest flight$82
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly with an average 51% increase in price.
Flight from Boston to Medellín Jose Maria Cordova Intl

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.

  • What is the cheapest time of day to fly to South America?

    The cheapest time of day to fly to South America is generally at night, when round-trip flights cost $508 on average. Morning departures are around 4% more expensive than evening flights, on average. The most expensive time of day to fly to South America is generally in the morning, which is peak travel time and where the average cost of a ticket is $594.

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.
8.0
DeltaOverall score based on 7982 reviews
8.5Crew
7.9Entertainment
8.2Boarding
7.3Food
7.9Comfort
Airline reviews

The flight attendants in SLC were rude. I arrived 40 minutes early to gate. Ticket said I needed check in for seat assignments and tried check in and attendants said they weren’t doing it. And proceeded to never call me to give me a ticket so when time to board I received the very last seat. Please relay to employees to do their job better..,

2.0 MediocreMichael, Aug 2025SLC - CDC
Read more Delta reviews

The flight attendants in SLC were rude. I arrived 40 minutes early to gate. Ticket said I needed check in for seat assignments and tried check in and attendants said they weren’t doing it. And proceeded to never call me to give me a ticket so when time to board I received the very last seat. Please relay to employees to do their job better..,

On this flight I felt the food offering was not as complete as on previous flights. The tomato salad was a bit off and there was nothing additional such a bread or butter. The breakfast was only one option, so you either ate what they had or ate nothing. The crew was efficient, but most seemed frustrated throughout the flight. The flight arrived early and was obstacle-free, so I’m overall quite happy, but the shine in the rest of the experience just wasn’t there.

The seats got pretty uncomfortable pretty fast. The armrests are bigger than on other planes, so I had less room in the actual seat. My butt hurt by the end of the flight. :/ comfort was the primary issue. The crew were fantastic!

I believe that a four-hour trip should have a meal. Delta had none.

Great flight with Delta! Boarding was quick and easy, the amenities were solid, and the plane was in great shape. The flight attendants had a fun, lively energy while staying professional. All in all, a smooth trip — even managed to catch up on some rest. Thanks, Delta!

I was uncomfortably cold on the plane. Other than that it was uneventful and therefore as enjoyable as a plane ride can be.

There was supposed to be a meal served, but there wasn’t and the major toilet was out of order

They made us board and then deboard due to mechanical issue which delayed the departure by almost 2 hours and we barely made our connecting flight. These quality checks should've been done before boarding not after.

Having to up charge for a seat assignment is not good. Delta can do better

I liked the friendliness of the staff. The cleanliness of all 3 planes.

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

I couldn't travel, now I can't get a refund and to change the date I have to pay an absurd fine.

My biggest complaint is the comfort. I am not tall and there was no legroom. It was very uncomfortable. During my transfer in Sao Paola, the flight was slightly delayed so boarding was confusing because there were no instructions in English.

Horrible the worst airlines I have ever flown. Cancelled flight with no choices and when contacted them they were not helpful

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.

I travel often with LATAM, it never disappoints me. The service is great, nice crew, latest and some classic movies. I got 3 small meals, cannot complaint. I’ll definitely travel again with them.

We had a great flight just wished they had a tv so we can see a movie that would of made my trip excellent.

Great experience with a crew always thinking in the passenger

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

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

Had to go through security at the gate again. Had to take off shoes and go through the whole thing again even though we have global entry. They asked us to check in items bought at duty free during our layover and since we checked our luggage at the original departure airport, they forced us to check in a small backpack. None of this ever happened with other airlines. In addition, no vegetarian food option and no snacks during a 7 hr flight. Luggage limits are unusually small. This is unacceptable. Will NEVER fly Copa again and will tell friends and family to avoid this airline.

We paid extra with copa for seats near one another The plane was changed and we lost our seats We were all Separated. We have not received a refund for our seats despite emailing and calling.

It was ok. However, the food was quite poor since I don't eat pasta.

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 flight was delayed twice and I could not speak with anyone at the airport about checking in. The phone number to Copa - the customer service agents were polite. They are just limited at helping because they are not at the airport

Pretty good. The food was just mediocre, the boarding and crew were good.

The comfort of the seats was great, the crew eased my child’s anxieties and the fact that I had full cans of my beverage choice was great.

My flight got switched and my prepaid bag didnt transfer over properly so I paid to check ANOTHER BAG. I was placed in a middle seat and it was just miserable. At least it was a bulkhead row so I had legroom. The flight just never seem3d to end

4 hours late, including over +1 hour waiting in plane to take off. Baggage left behind too.

Sat on the ground in Cincinnati for 50 minutes before deplaning

While waiting to claim my checked luggage, I discovered the airline had lost it. After a long wait and inquiries, I discovered it was on another flight. Fortunately, the airline finally sent my luggage home.

Crew should be nicer and emphatic with customers. Same cookies as the past 20 years. Seat are ok and the plane was clean though it was delayed.

Was not able to watch most shows on the entertainment site. They would not load

As smooth as you can expect. Some issues with boarding because the previous plane took forever to deplane but overall, a good experience.

On Wednesday, July 30 we were in mid flight from Manchester to Charlotte and we turned around because the right engine was malfunctioning. That was the last flight out of Manchester that night. I was rebooked for Thursday, which became a weather event Friday. There were no seats left on the flight from Manchester to Charlotte. Consequently I didn’t leave Manchester until Saturday morning and we flew to Chicago so to say the least my scheduled flight and return to Iowa was three days off and it messed with my business schedule. Consequently cash flow. I would like some sort of acknowledgment of this event.

Very uncomfortable planes , poor service on the plane , take your own water so you don’t dehydrate , in a 6 hs flight they sold one time food and beverage . 1 plane was delayed 6 hs , I lost a connecting flight . Then in the way back they announce a delay of 2 hs so I had to take a different flight to arrive on time for my connecting flight . Avoid this airline .

No food, terms when selling are not clear. To pricy for the service in general

The incoming plane was late and no information was shared. They even announced we would board in 10 muntes 40 minutes prior to the plane arriving, and the website said until takeoff that we had taken off an hour earlier

Boarding was excessively slow. They do it by groups in a way that it doesn’t make sense. After business class , ppl that need assistance and any other priority group they should have ppl board from the back to the front. First rows 20+. Then 15+. Then 10, etc. having ppl sitting in the back board last makes no sense. The libe backame long as soon as ppl on rows 10 or so where told to board. The line went all the way up the ramp and tunnel for 25 mins.

Seats are very tight even in Plus, no complimentary snacks or beverage

Flight to Bogotá delayed by 3 h Missed connection from Bogotá to Guayaquil. Avianca unable to bring us to Baltra on time Overall delay 36h. We missed boat departure from galagos. Overall 10 day trip needed to be cancelled. Avianca was completely un-professional.

Late departure. When the flight arrived in Medellin the plane sat at the gate for 20 minutes waiting for a bus for us to get off the plane.

I receive a service for what I pay, so it is fair.

Business class seats did not lie flat. There was only powdered milk for your coffee....in Business Class!! Food was good.

There isn't much space in-between seats and even water needs to be paid for during the flight.

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