$93 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 3/25. 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$282
Bogotá
Bogotá1 stop$267
Medellín
Medellín1 stop$259
Buenos Aires
Buenos Aires2 stops$646
Sao Paulo
Sao Paulo1 stop$447
Rio de Janeiro
Rio de Janeiro2 stops$540
Santiago
Santiago2 stops$545
Cartagena
Cartagena1 stop$291
Quito
Quito1 stop$306
Guayaquil
Guayaquil1 stop$256
Cali
Cali1 stop$239
Cusco
Cusco2 stops$440
Georgetown
Georgetown1 stop$554
Pereira
Pereira2 stops$378
Montevideo
Montevideo2 stops$806
Barranquilla
Barranquilla1 stop$226
Santa Marta
Santa Marta2 stops$377
Asuncion
Asuncion2 stops$641
Lima
Lima1 stop$282
Bogotá
Bogotá1 stop$267
Medellín
Medellín1 stop$259
Buenos Aires
Buenos Aires2 stops$646
Sao Paulo
Sao Paulo1 stop$447
Rio de Janeiro
Rio de Janeiro2 stops$540
Santiago
Santiago2 stops$545
Cartagena
Cartagena1 stop$291
Quito
Quito1 stop$306
Guayaquil
Guayaquil1 stop$256
Cali
Cali1 stop$239
Cusco
Cusco2 stops$440
Georgetown
Georgetown1 stop$554
Pereira
Pereira2 stops$378
Montevideo
Montevideo2 stops$806
Barranquilla
Barranquilla1 stop$226
Santa Marta
Santa Marta2 stops$377
Asuncion
Asuncion2 stops$641

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

Sun, Mar 1 - Mon, Mar 30
Spirit Airlines Logo
4:22 pm - 1:55 pm
BOS
-
MDE
21h 33m
1 stop
Spirit Airlines Logo
1:17 am - 3:28 pm
MDE
-
BOS
13h 11m
1 stop
$259Spirit Airlines
Tue, Mar 3 - Wed, Mar 11
Spirit Airlines Logo
5:27 am - 2:13 pm
BOS
-
MDE
8h 46m
1 stop
Spirit Airlines Logo
2:15 pm - 11:44 pm
MDE
-
BOS
8h 29m
1 stop
$262Spirit Airlines
Tue, Mar 3 - Tue, Mar 10
Spirit Airlines Logo
5:27 am - 2:13 pm
BOS
-
MDE
8h 46m
1 stop
Spirit Airlines Logo
2:15 pm - 5:15 pm
MDE
-
BOS
26h 00m
1 stop
$263Spirit Airlines
Thu, Mar 5 - Tue, Mar 24
Avianca Logo
7:55 am - 10:40 pm
BOS
-
GRU
36h 45m
1 stop
Avianca Logo
7:35 am - 2:50 pm
GRU
-
BOS
32h 15m
2 stops
$447Avianca
Tue, Mar 10 - Mon, Mar 30
Avianca Logo
8:55 am - 10:40 pm
BOS
-
GRU
36h 45m
1 stop
Avianca Logo
1:20 am - 2:50 pm
GRU
-
BOS
38h 30m
2 stops
$448Avianca
Wed, Mar 11 - Tue, Mar 31
Copa Airlines Logo
4:05 pm - 6:30 am
BOS
-
GRU
13h 25m
1 stop
Copa Airlines Logo
2:00 am - 2:34 pm
GRU
-
BOS
13h 34m
1 stop
$450Copa Airlines
Mon, Mar 2 - Sun, Mar 15
Copa Airlines Logo
7:44 am - 12:10 am
BOS
-
GRU
14h 26m
1 stop
Copa Airlines Logo
1:40 am - 2:42 pm
GRU
-
BOS
14h 02m
1 stop
$451Copa Airlines
Tue, Mar 3 - Tue, Mar 10
American Airlines Logo
7:00 pm - 7:00 pm
BOS
-
VCP
22h 00m
2 stops
American Airlines Logo
7:40 pm - 11:44 am
VCP
-
BOS
17h 04m
2 stops
$514American Airlines
Thu, Apr 23 - Thu, Apr 30
LATAM Airlines Logo
9:55 am - 8:35 am
BOS
-
SDU
21h 40m
1 stop
LATAM Airlines Logo
1:55 pm - 7:35 am
SDU
-
BOS
18h 40m
1 stop
$638LATAM Airlines
Mon, Mar 16 - Tue, Mar 24
LATAM Airlines Logo
9:55 am - 9:25 am
BOS
-
SDU
22h 30m
1 stop
LATAM Airlines Logo
8:05 pm - 3:09 pm
SDU
-
BOS
20h 04m
2 stops
$662LATAM 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 $277 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 $438.

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 $618, 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 September, 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 $849 and $708 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 8% 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$93
Best time to beat the crowds with an average 17% drop in price.
Most popular time to fly with an average 32% 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.

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 8172 reviews
7.8Entertainment
8.5Crew
7.9Comfort
7.2Food
8.1Boarding
Airline reviews

Prior to takeoff, the pilot told us there was a possibility of not being able to land and going to Portland. Well that happened, we took off and then did 8 loops around Spokane before the pilot told us we ran out of fuel and had to go to Portland. So for a 35 minute flight we have now been on the plane for 3 hours (boarded at 6:50 am and landed in Portland at 10:30). Then, we just sat in Portland's airport with no updates of when we can start heading back. All of a sudden, our pilots and crew just left, leaving us stranded in a different city and state. We continued to sit in Portland until we finally got a new crew assigned and boarded the plane (This was from 10:30-2). We then sat on the plane for an additional hour before take off because they had to count us multiple times. We finally landed in Spokane at 3:55 PM. So a flight that should have taken at max an hour took us 10 hours and we missed the majority of the recruiting event we went for.

2.0 MediocreKeenan, Feb 2026
GEG - SEA
Read more Delta reviews

Prior to takeoff, the pilot told us there was a possibility of not being able to land and going to Portland. Well that happened, we took off and then did 8 loops around Spokane before the pilot told us we ran out of fuel and had to go to Portland. So for a 35 minute flight we have now been on the plane for 3 hours (boarded at 6:50 am and landed in Portland at 10:30). Then, we just sat in Portland's airport with no updates of when we can start heading back. All of a sudden, our pilots and crew just left, leaving us stranded in a different city and state. We continued to sit in Portland until we finally got a new crew assigned and boarded the plane (This was from 10:30-2). We then sat on the plane for an additional hour before take off because they had to count us multiple times. We finally landed in Spokane at 3:55 PM. So a flight that should have taken at max an hour took us 10 hours and we missed the majority of the recruiting event we went for.

It was delayed but other than that it was great.

Got on the plane and sat there for an hour before departure.

Second flight in a row where the entertainment system is broken. 5 hour long flight with no entertainment and flight attendants did not seem interested in resolving the matter. Very shocked to be treated this poorly considering I paid for a first class experience and have Diamond Medallion status.

They double booked seats, the gate staff changed my ticket as I was boarding she went over to the computer and changed it without telling me. She messed up an entire three row section for me and others. Other travelers were outraged but the gate staff were so rude, so condescending saying it wasn't their problem to solve. I would rate this a zero if I could. Will not fly Delta again I'll stick with United and American.

It was nt delta. It was aeromexo. Service was awful. They served a very small drink and NO snack for a 3hr and 35min flight. Then for the first 30 min of the flight is was talk and talk over head interruption the movie/ show i picked to watch.

Comfort seating was on the tight side. Maybe it was a smaller plane(?)

I was given middle seat on this flight and prior Boston to Seoul flight That is a problem for long flights, Kayak system did not give me a change to select my seats and assigned me middle seats regardless of my elevated status in Delta. This needs immediate attention.

I didn't take this flight. I changed the flight. Why am I getting surveys and notifications on flights that I change. Seems like a defect with Kayak.

Delta One is extraordinary. I fly business when somebody hires me. I just wonder why there is such a chasm between business class and the insanely inhumane and nonsensical coach. The seats are not large enough to fit even my tiny wife. We fly 10% of what we did because we don’t want to pay 5-10 k but for $400 it’s unbearable. It seems like the accountants took over and made stupid decisions. Screw in 20 extra seats and make it so unbearable that people fly 90% less. Just put the damn price up and put some proper chairs in. But business, yay.

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 .

Just to drop my already labeled bag it took 50 minutes inline. Completely disappointed with Latam operation at GRU

Really bad experience – delayed for 6 hours without any notice, no food or drinks provided, and stuck in the horrible Cartagena airport.

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.

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

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

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.

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

the food served was an embarrassment. No connection for charging the cellphone... What a crappy airline.

the plane was so hot!! the air-conditioning was barely blowing. The flight was delayed, and we had to sit on the hot plane before take off for an extended amount of time, waiting on international passengers. Would not have been so bad if it was not so hot. They said it would get better after take off, but it did not.

They are always late and seats was also not having working charger

We flew in first class. The crew did not offer drinks before the flight took off, but they treated us well during the flight. The food was excellent. There was actually too much food served, but it was nice to have all the options.

did not have enough meal for first class passengers so offer us snack

Arrived 40 min early which was great - sat in runway for 35 min so no gain. Then waited for luggage 45 min. They need to staff accordingly knowing its one of the busiest week in Phx

Broke my luggage and I can't get a resolution yet.

My flight got rerouted due to crew rest. I was sent to Dallas customer service was not very polite. Was given a $40 room voucher for Motel 6 and $12 to eat with. It delayed me by a day. Where if I would have just stuck with my original flight Arizona was delayed to Cleveland and I could have made it home. They put me on a 9:00 flight out of Dallas to Cleveland without my knowledge or consent. When originally I was told it would be 8:45 a.m. on February 1st. I told them I could not take the 9:00 flight because I did not have anybody to pick me up from the airport at that time. I'm extremely disappointed in how I was treated. And I will not fly American Airlines again.

I am very appreciative of the help provided to me by Dennis and Whitney. I had lost my phone at EWR airport and they were very kind in assisting me. This included advice on how to file a report and also helping me connect with family. The pilot was also great about keeping passengers updated on the flight progress with regular communications over the system.

Awful. Original flight was delayed 5 hours. Had to to take a connecting flight instead of direct. Had a 4 hour layover. I missed all of my morning meetings getting in 5 hours later than I was supposed to and had to change to take a later flight the next day to get them back in which cia time another $150.

Old equipment, needs upgrade and seat comfort. Internet didn't work 75% or the time.

Horrible experience with Avianca, they delayed their flight and when we arrived to NYC, AVIANCA took 1 hr y 30 mins to park the airplane and all passenger get off the plane, it made me lost all my trains to get back home and I came back to my place at 3 am instead of 12 am. On the top of that their plane seat are so uncomfortable and is not enough space and killed my legs and knees, Avianca used to be good when it was a Colombian company, now after Brasilian company bought them, their service quality is bad and their flights are delayed and oversold.

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

Boarding was late due to the company’s that cleaned the aircraft (very poorly done) and the catering company. The entertainment system was not working for this six hour flight, uncomfortable seats in business (barely any cushion or recline). The airline staff is very good but the planes are horrible and not well maintained.

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

Everything you need to know for your flight to South America

Information on your arrival and departure airports