$100 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 5/13. 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.
1 adult
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$549
Bogotá
Bogotá1 stop$343
Medellín
Medellín1 stop$331
Buenos Aires
Buenos Aires1 stop$821
Sao Paulo
Sao Paulo1 stop$609
Rio de Janeiro
Rio de Janeiro1 stop$670
Santiago
Santiago2 stops$758
Cartagena
Cartagena1 stop$264
Quito
Quito1 stop$351
Guayaquil
Guayaquil1 stop$331
Cali
Cali2 stops$402
Cusco
Cusco2 stops$750
Georgetown
Georgetown1 stop$466
Pereira
Pereira2 stops$484
Barranquilla
Barranquilla1 stop$356
Montevideo
Montevideo2 stops$875
Santa Marta
Santa Marta2 stops$412
Asuncion
Asuncion1 stop$846
Lima
Lima1 stop$549
Bogotá
Bogotá1 stop$343
Medellín
Medellín1 stop$331
Buenos Aires
Buenos Aires1 stop$821
Sao Paulo
Sao Paulo1 stop$609
Rio de Janeiro
Rio de Janeiro1 stop$670
Santiago
Santiago2 stops$758
Cartagena
Cartagena1 stop$264
Quito
Quito1 stop$351
Guayaquil
Guayaquil1 stop$331
Cali
Cali2 stops$402
Cusco
Cusco2 stops$750
Georgetown
Georgetown1 stop$466
Pereira
Pereira2 stops$484
Barranquilla
Barranquilla1 stop$356
Montevideo
Montevideo2 stops$875
Santa Marta
Santa Marta2 stops$412
Asuncion
Asuncion1 stop$846

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, May 6 - Wed, May 13
Spirit Airlines Logo
5:45 am - 12:26 pm
BOS
-
CTG
7h 41m
1 stop
Spirit Airlines Logo
1:31 pm - 11:54 pm
CTG
-
BOS
9h 23m
1 stop
$264Spirit Airlines
Mon, May 4 - Wed, May 13
Spirit Airlines Logo
5:45 am - 12:26 pm
BOS
-
CTG
7h 41m
1 stop
Spirit Airlines Logo
1:31 pm - 11:54 pm
CTG
-
BOS
9h 23m
1 stop
$279Spirit Airlines
Wed, May 13 - Mon, May 18
LATAM Airlines Logo
5:35 am - 1:40 pm
BOS
-
BOG
9h 05m
1 stop
LATAM Airlines Logo
2:55 pm - 11:15 am
BOG
-
BOS
19h 20m
1 stop
$343LATAM Airlines
Fri, May 8 - Wed, May 13
LATAM Airlines Logo
9:10 am - 7:15 pm
BOS
-
BOG
11h 05m
1 stop
LATAM Airlines Logo
11:00 am - 11:31 pm
BOG
-
BOS
11h 31m
1 stop
$345LATAM Airlines
Mon, May 25 - Tue, May 26
Copa Airlines Logo
8:52 am - 8:10 pm
BOS
-
BOG
12h 18m
1 stop
Copa Airlines Logo
7:00 am - 11:08 pm
BOG
-
BOS
15h 08m
1 stop
$353Copa Airlines
Fri, May 8 - Tue, May 12
Delta Logo
7:15 am - 5:50 pm
BOS
-
BOG
11h 35m
1 stop
Delta Logo
2:55 pm - 9:46 am
BOG
-
BOS
17h 51m
1 stop
$365Delta
Sat, May 9 - Tue, May 12
American Airlines Logo
10:51 am - 9:17 pm
BOS
-
BOG
11h 26m
2 stops
American Airlines Logo
6:30 am - 10:14 pm
BOG
-
BOS
14h 44m
2 stops
$369American Airlines
Thu, May 7 - Tue, May 12
Delta Logo
6:00 am - 8:10 pm
BOS
-
BOG
15h 10m
2 stops
Delta Logo
2:55 pm - 9:46 am
BOG
-
BOS
17h 51m
1 stop
$370Delta
Wed, May 20 - Mon, May 25
Copa Airlines Logo
4:00 pm - 12:06 am
BOS
-
BOG
9h 06m
1 stop
Copa Airlines Logo
6:17 pm - 2:44 pm
BOG
-
BOS
19h 27m
1 stop
$373Copa Airlines
Wed, Aug 19 - Tue, Sep 1
American Airlines Logo
7:30 am - 10:25 pm
BOS
-
LIM
15h 55m
1 stop
American Airlines Logo
10:00 pm - 2:31 pm
LIM
-
BOS
15h 31m
1 stop
$561American Airlines
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 $218 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 $628.

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 $585, 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 $528 (return) on average. On the other hand, the most expensive months are December and July, when the average cost of round-trip tickets is $837 and $685 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 3% 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$100
Best time to beat the crowds with an average 15% 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.

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 8439 reviews
8.5Crew
7.8Entertainment
7.2Food
8.1Boarding
7.9Comfort
Airline reviews

Everything was great. The only issue is unfixable. Seats are too small. 😁🤪

10.0 ExcellentAnonymous, Apr 2026
ATL - AMS
Read more Delta reviews

Everything was great. The only issue is unfixable. Seats are too small. 😁🤪

This wasn't my experience with Delta. It was just the Pegasus flight. Seats were very hard. Staff was kinda rough. Not very nice. Charged me for snacks. For a 4 hour flight I would've expected more.

Crew was nice, meal was good. Entertainment had to be rebooted 3 times and still did not work. Turns out there was residue on screen, it needed to be cleaned to prevent the touchscreen buttons from continuously activating. I had entertainment for the last 45 minutes of a 5 hour 45 minute flight. Really unacceptable for first class. Flight attendent indicated your cleaning solution creates this problem. Seems as if this is widely known, you should be using a different product or cleaning better. Really really disappointing which simply added to the wi fi on your planes with reliably never ever works.

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.

Everything went smoothly, although the usual gripes about airline travel were still present: the boarding process is inefficient, the snack selection is limited, and so on. Since there was extra space on the flight, the gate agent rearranged many people's seats to put people on the aisles and windows, leaving the middle seats empty, as much as possible, which was pretty great.

Landed without a gate ready. Plane is extremely old and dirty.

All the amenities was wonderful, if they could keep their prices that low. I'd fly with them all the time.

Very old plane with no inflight entertainment. I purchased the internet pass and it was nearly unusable.

My tray was broken so i had no place to work or eat except my lap. Flight attendant said I would get an email with some credit or miles, it was a complete waste of time as I could only function at about 20% of normal. I have not received anything yet.

I was flying business class, and the French fellow passengers were super noisy. It was not a comfortable flight. And the crew was not helpful.

Boarding was a mess, they call all priority members without distinction so gold, platinum, silver were all mixed together in a long line which defeats the purpose

Do not book it’s a scam! They stole $1200 from me

Copa staff at PTY and one particular crew member were unhelpful & rude.

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.

The flight was good overall. Everything went smoothly, although the landing was a bit rough. Still, it was a pleasant experience

I always enjoy flying Copa. There are very few airlines where I can enjoy a comfortable sleep in-flight. The snacks weren't the best, but they sufficed. The in-flight entertainment was fantastic, and I crossed another movie off my watch list.

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.

They were super friendly bumped me up to exit row free of charge, All flight legs were on time

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

Nothing I like, I missed this connection b/c of an earlier flight delay. I had to stay one more night and I paid out my own pocket. LATAM failed to send me to a safe and decent hotel.

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.

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.

The way the Pilot made all announcements, specially the way he congratulated the entire crew as the best team ever, making a comment that due to them they were able to shorter the delay to the destination. Amazing flight .

The plane broke down at the Lima stopover and they offered to put me on a flight the be t day but I had to be back in LA that morning and so I had to buy another ticket from Avianca and United for $2k I asked LATAM for compensation and received none. Very bad experience

On time departure and early arrival. Flight attendant very nice.

As we approached Denver, we encountered quite a bit of turbulence. I know this can sometimes be the case as I frequently fly this route but not on American. My gripe: Usually a pilot or co-pilot alerts passengers to the possibility of turbulance ahead of time. This did not occur nor did he communiucate during what was a pretty rough ride.

The staff was nice. I appreciated that I was able to take an earlier flight, even though it was last minute. The boarding process felt rather chaotic.

Overall a good experience, however Wifi was not working on the flight.

For a 4 1/2 hour international flight all we got was 1 small pack of cookies and a drink. You had to watch movies on your own devise.

Airlines should be prohibited from using the seats they get away with.

My flight got delayed a total of five times. And the boarding gate changed four times. most of the time the platform was not up-to-date with the changes taking place. The most discouraging part of the entire trip by far.

Flight left early and arrived 30 MINUTES early at the destination. Smooth trip.

American delayed the flight for a crew rest period. The delay occurred late in the evening - the earliest i can find is 10:20 pm. With a 6 am flight anyone on the flight would have already have been asleep (unless you are insane, a vampire or on drugs) and at least for me i was already on the way to the airport at 445 am the next morning when i discovered they delayed the flight until 9 am. Given the incoming flight was in the air at 6 pm the evening before this should have been figured out a lot more timely that was there only crew to use. Just frustrating given there is no consideration for customer experience anymore in flying.

Returned home with a blood clot from flight homes and the uncomfortable aircraft I was on.

Overall, the flight went well and the service was good. However, there was a very frightening moment during landing in Bogotá. Just as the plane was about to touch down, it suddenly went back up into the air. The aircraft was not descending straight and seemed to move left and right, which made the situation feel unstable. This was quite scary. After going back up, the plane circled for about 15 minutes before attempting to land again. Although I understand that safety always comes first and situations like this can happen, it was still a shocking experience for passengers.

They should provide water to passengers who ask for it

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

only a bag of chips and a bottle of water in business class was served

Avianca has transitioned from full service legacy airline to "low cost" but has now became a strange hybrid (minimum leg space, started offering business class in domestic flights again, charges passenger for printing boarding pass, etc.). National and international coverage and destinations are really wide but service is not at its best

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

Everything you need to know for your flight to South America

Information on your arrival and departure airports