$147 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 9/30. 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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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$459
Bogotá
Bogotá1 stop$350
Medellín
Medellín2 stops$325
Buenos Aires
Buenos Aires1 stop$793
Sao Paulo
Sao Paulo1 stop$508
Rio de Janeiro
Rio de Janeiro1 stop$536
Santiago
Santiago2 stops$554
Cartagena
Cartagena1 stop$253
Quito
Quito1 stop$301
Cali
Cali1 stop$264
Guayaquil
Guayaquil1 stop$351
Cusco
Cusco2 stops$659
Pereira
Pereira2 stops$406
Georgetown
Georgetown1 stop$421
Montevideo
Montevideo1 stop$658
Barranquilla
Barranquilla1 stop$283
Santa Marta
Santa Marta2 stops$391
Florianopolis
Florianopolis2 stops$568
Lima
Lima1 stop$459
Bogotá
Bogotá1 stop$350
Medellín
Medellín2 stops$325
Buenos Aires
Buenos Aires1 stop$793
Sao Paulo
Sao Paulo1 stop$508
Rio de Janeiro
Rio de Janeiro1 stop$536
Santiago
Santiago2 stops$554
Cartagena
Cartagena1 stop$253
Quito
Quito1 stop$301
Cali
Cali1 stop$264
Guayaquil
Guayaquil1 stop$351
Cusco
Cusco2 stops$659
Pereira
Pereira2 stops$406
Georgetown
Georgetown1 stop$421
Montevideo
Montevideo1 stop$658
Barranquilla
Barranquilla1 stop$283
Santa Marta
Santa Marta2 stops$391
Florianopolis
Florianopolis2 stops$568

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

Sat, Oct 25 - Thu, Oct 30
Spirit Airlines Logo
2:15 pm - 12:21 amBOS-MDE
11h 06m2 stops
Spirit Airlines Logo
2:22 pm - 11:59 pmMDE-BOS
8h 37m1 stop
$325Spirit Airlines
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Fri, Oct 31 - Fri, Nov 7
Multiple Airlines Logo
12:20 pm - 12:21 amBOS-MDE
13h 01m2 stops
Multiple Airlines Logo
3:11 pm - 12:40 amMDE-BOS
9h 29m1 stop
$327Multiple Airlines
Find Deal
Mon, Oct 27 - Sun, Nov 2
Copa Airlines Logo
3:49 pm - 9:51 amBOS-MDE
19h 02m1 stop
Copa Airlines Logo
5:00 am - 1:24 pmMDE-BOS
8h 24m1 stop
$363Copa Airlines
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Tue, Oct 7 - Mon, Oct 20
LATAM Airlines Logo
7:00 am - 8:10 pmBOS-BOG
14h 10m1 stop
LATAM Airlines Logo
1:35 am - 3:26 pmBOG-BOS
12h 51m1 stop
$396LATAM Airlines
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Wed, Jan 7 - Tue, Jan 20
Copa Airlines Logo
3:07 pm - 10:10 amBOS-BOG
19h 03m1 stop
Copa Airlines Logo
4:45 am - 1:39 pmBOG-BOS
8h 54m1 stop
$397Copa Airlines
Find Deal
Sat, Nov 8 - Fri, Nov 21
LATAM Airlines Logo
5:40 am - 7:30 pmBOS-BOG
13h 50m1 stop
LATAM Airlines Logo
7:00 am - 11:02 pmBOG-BOS
16h 02m1 stop
$402LATAM Airlines
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Tue, Sep 30 - Fri, Oct 10
Delta Logo
3:00 pm - 8:05 amBOS-GRU
16h 05m2 stops
Delta Logo
10:45 pm - 7:35 amGRU-BOS
9h 50mnonstop
$509Delta
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Thu, Oct 23 - Tue, Oct 28
Delta Logo
9:55 am - 8:35 pmBOS-GRU
9h 40mnonstop
Delta Logo
9:15 pm - 12:35 pmGRU-BOS
16h 20m1 stop
$510Delta
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Mon, Oct 27 - Sun, Nov 9
American Airlines Logo
1:01 pm - 10:30 amBOS-CNF
20h 29m2 stops
American Airlines Logo
8:40 pm - 3:50 pmCNF-BOS
21h 10m2 stops
$513American Airlines
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Wed, Oct 22 - Thu, Oct 30
American Airlines Logo
3:10 pm - 9:00 amBOS-GRU
16h 50m2 stops
American Airlines Logo
11:30 pm - 2:37 pmGRU-BOS
16h 07m2 stops
$535American 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 $394 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 $597.

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 $472, 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 $484 (return) on average. On the other hand, the most expensive months are December and July, when the average cost of round-trip tickets is $975 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 2 weeks before departure, which saves you about 14% 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$147
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly with an average 48% increase in price.
Flight from Boston to Bogotá

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.
7.9
DeltaOverall score based on 7957 reviews
8.2Boarding
8.5Crew
7.9Comfort
7.3Food
7.9Entertainment
Airline reviews

Passengers need to check in big baggage instead of bringing on the plane. That cause inconvenience for everyone. Otherwise flight was good.

8.0 ExcellentTarun, Sep 2025MCO - LHR
Read more Delta reviews

Passengers need to check in big baggage instead of bringing on the plane. That cause inconvenience for everyone. Otherwise flight was good.

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

The food was terrible especially for a 15 hour international flight. The crew was unpleasant as well.

Really low quality food especially for an international flight. The crew also was surprisingly unpleasant except couple of ladies. I know we were not in first class but that’s no reason to treat customers as less.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Quick check in. Everything went smooth. I don't know what can be done about airline food.

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

Delta made it easy, comfortable and timely. The crew was fantastic.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

Nothing special. The crew never went out of their way for anything.

As always, Copa Airlines is great to fly on. The flights are always on time, the staff are pleasant and helpful and it's always a wonderful flying experience.

Cops Airlines is fantastic! The level of care and professionalism provided by the entire crew was top rate.

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 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.

Given it’s a red-eye into Charolotte, we didn’t get any food. The survey does not include “N/A” so the rating will be skewed.

Great. Quick and quiet and east. The breakfast choices were a welcome surprise!

American airlines suck they delay the flights all the time made me sleep in an airport because my flight was delayed and I miss my connecting flight

There's nothing I liked about it. For first off I scheduled this trip two weeks in advance then they delayed my flight which messed up my whole trip. So I scheduled it for the following weekend thinking there won't be a delay and guess what as soon as I got to the airport we said in the airplane on the tarmac for an hour and a half. Not only was it delayed I missed my connecting flight meaning I had to stay the night at Dallas-Fort Worth airport sleeping on the floor. I will tell you this I will never fly American airlines ever again I have had nothing but horrible experience with them and I just throw money at them

The stewardess hit me with the food kart twice on the head and didn't say I'm sorry once. The same stewardess gave me a warm Apple Juice with No ice. The Flight was delayed for Departure 6 times, starting from 2:36pm, finally taking off 7:50pm. I was late picking up my child from the sitter by 3 hours.

Don’t know they cancelled the flight day before I was to leave. They sent a email at 9:00 pm at night saying they cancelled. That is the smooth way to say we don’t want your business! I think they didn’t have enough people booking so they cancelled the flight! It’s all about the money anymore there is no honesty in business.

Having to reschedule flights a day later, they loaded by luggage on the wrong plane from Little rock now I have to HOPE they deliver it to where im staying like they said would. International flight crew was very disgruntled and not very friendly.

We will be writing a long, detailed letter to corporate about our awful experience with American airlines.

It took way too long to diagnose and solve the problem of a broken crew member cabin seat. Though compensation for the volunteer who left the flight was very kind.

The entertainment package was vast and the selections were very current. Keep updating it was great.

Boarding, crew were excellent, food was ok and entertainment need to improve

Luggage lost and nowhere to be found, no response from either airline regarding my bag

The seats were uncomfortable and barely reclined at all. Very little leg room despite being business class. The crew was friendly and the food was good. Had to use my own phone for in-flight entertainment.

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

Avianca is not what it used to be. So disappointing

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.

Everything you need to know for your flight to South America

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