$109 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 6/19. 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

KAYAK searches hundreds of travel sites at once for deals on flights to South America

Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Free to useThere are no hidden charges or fees.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
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$463
Bogotá
Bogotá1 stop$353
Medellín
Medellín2 stops$360
Buenos Aires
Buenos Aires1 stop$655
Sao Paulo
Sao Paulo2 stops$584
Rio de Janeiro
Rio de Janeiro2 stops$677
Santiago
Santiago1 stop$724
Cartagena
Cartagena1 stop$335
Quito
Quito2 stops$396
Guayaquil
Guayaquil1 stop$392
Cali
Cali1 stop$416
Cusco
Cusco2 stops$747
Georgetown
Georgetown1 stop$488
Pereira
Pereira1 stop$517
Barranquilla
Barranquilla1 stop$446
Montevideo
Montevideo1 stop$882
Santa Marta
Santa Marta2 stops$442
Asuncion
Asuncion1 stop$846
Lima
Lima1 stop$463
Bogotá
Bogotá1 stop$353
Medellín
Medellín2 stops$360
Buenos Aires
Buenos Aires1 stop$655
Sao Paulo
Sao Paulo2 stops$584
Rio de Janeiro
Rio de Janeiro2 stops$677
Santiago
Santiago1 stop$724
Cartagena
Cartagena1 stop$335
Quito
Quito2 stops$396
Guayaquil
Guayaquil1 stop$392
Cali
Cali1 stop$416
Cusco
Cusco2 stops$747
Georgetown
Georgetown1 stop$488
Pereira
Pereira1 stop$517
Barranquilla
Barranquilla1 stop$446
Montevideo
Montevideo1 stop$882
Santa Marta
Santa Marta2 stops$442
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

Tue, May 26 - Thu, May 28
Copa Airlines Logo
4:00 pm - 11:00 pm
BOS
-
CTG
8h 00m
1 stop
Copa Airlines Logo
9:45 am - 11:08 pm
CTG
-
BOS
12h 23m
1 stop
$335Copa Airlines
Sat, May 30 - Fri, Jun 5
American Airlines Logo
5:00 am - 12:35 pm
BOS
-
CTG
8h 35m
1 stop
American Airlines Logo
3:13 pm - 9:30 am
CTG
-
BOS
17h 17m
2 stops
$339American Airlines
Mon, May 25 - Fri, Jun 5
American Airlines Logo
5:00 am - 2:13 pm
BOS
-
CTG
10h 13m
1 stop
American Airlines Logo
3:13 pm - 10:05 am
CTG
-
BOS
17h 52m
1 stop
$347American Airlines
Tue, May 26 - Tue, Jun 2
Copa Airlines Logo
4:00 pm - 11:00 am
BOS
-
CTG
20h 00m
1 stop
Copa Airlines Logo
12:00 pm - 2:44 pm
CTG
-
BOS
25h 44m
1 stop
$350Copa Airlines
Mon, May 25 - Tue, May 26
LATAM Airlines Logo
9:10 am - 7:15 pm
BOS
-
BOG
11h 05m
1 stop
LATAM Airlines Logo
2:55 pm - 11:15 am
BOG
-
BOS
19h 20m
1 stop
$365LATAM Airlines
Tue, Sep 8 - Tue, Sep 15
LATAM Airlines Logo
5:45 am - 1:40 pm
BOS
-
BOG
8h 55m
1 stop
LATAM Airlines Logo
2:55 pm - 1:06 am
BOG
-
BOS
9h 11m
1 stop
$366LATAM Airlines
Thu, Jun 11 - Thu, Jul 16
Delta Logo
6:50 am - 5:50 pm
BOS
-
BOG
12h 00m
2 stops
Delta Logo
8:40 am - 11:33 pm
BOG
-
BOS
13h 53m
1 stop
$373Delta
Sun, Jun 7 - Sat, Aug 1
Delta Logo
9:55 am - 8:40 pm
BOS
-
GRU
9h 45mnonstop
Delta Logo
10:45 pm - 7:35 am
GRU
-
BOS
9h 50mnonstop
$597Delta
Thu, Aug 20 - Fri, Sep 11
Avianca Logo
8:45 am - 10:30 am
BOS
-
CNF
24h 45m
2 stops
Avianca Logo
11:10 am - 6:50 am
CNF
-
BOS
20h 40m
2 stops
$715Avianca
Thu, Oct 8 - Mon, Oct 19
Avianca Logo
8:45 am - 10:30 am
BOS
-
CNF
24h 45m
2 stops
Avianca Logo
11:10 am - 7:10 am
CNF
-
BOS
21h 00m
2 stops
$745Avianca
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 $275 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 $582 (return) on average. On the other hand, the most expensive months are December and February, when the average cost of round-trip tickets is $965 and $816 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$109
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly with an average 34% 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 8458 reviews
8.5Crew
7.8Entertainment
8.1Boarding
7.9Comfort
7.2Food
Airline reviews

Seats in Delta Main are unbelievably close to the seat in front of. Hard to get a backpack under the seat.

8.0 ExcellentMatthew, May 2026
OKC - ATL
Read more Delta reviews

Seats in Delta Main are unbelievably close to the seat in front of. Hard to get a backpack under the seat.

The flight was operated by Latam. The aircraft had a technical issue and the flight was delayed for the next day. They grounded other passengers to get their airplane assigned to my flight. Most of he ground staff don't speak English (Orlando Airport), but were very polite.The crew on the other hand could speak English and Portuguese. On board service was good.

The agent at check in and at the gate were less than thrilled to be at work. I'm not a fan of Kayak's placement on the plane. I got put in the middle seat and none of my preferences were used.

In ATL they have two sets of departure screens. Follow what is on your airline's departure board - the ATL Airport Authority departure board had completely incorrect details about the gate assignment for my flight, which would have made me miss boarding.

Flight was delayed it was hot while sitting on the plane, one engine was working on the plane until they had to do some jimmy rigging down the runway in order for the other engine to charge up. It was ridiculous

The flight was very good and the staff was very friendly and helpful!

The only thing I would say is we tried to get on a standby earlier flight, but with our fair we couldn’t. That seems senseless to leave with open seats..

Very easy to use and convenient, you can perform any action within the same portal

In a world of delays, Delta was on time both ways! Boarding was fast and efficient. Staff was friendly. AND wifi worked.

WiFi didn’t work. Flight delayed 3 hours Crew members were illiterate Seat lean back did not work.

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

Terrible, horrible, disappointing- without telling us they changed planes and moved and separated our seats to opposite sides - said they changed seats putting us together - got to airport to find no, they did not - we sat opposing sides of plane - food overly salty to inedible, never saw stewardess but once - it was terrible

not sure why you ask about food, I n3ver get food on flights except maybe cookies or pretzels. wifi was slow and in and out most of the flight not good.

The crew was very attentive through out the flight. Seats were comfortable, nice flight bag with pillow and blanket. Food was okay, since it was a overnight flight seemed to go by fast.

The flight attendant on my side of business class seemed like a novice and did not provide good service. Otherwise the flight was good and the entertainment system was very good. No free WiFi.

Cancelled BOYH legs of our flight home 30 min before initial boarding

Cancelled the flight half hour before boarding. Then cancelled the connecting flight too.

Left early arrived early..right amount of talking from pilots..of course had to love the biscuit and water!

I would like a refund for the extra cost the seat I paid for. An oversized person sat next to me and I couldn’t fit on my seat and had to move to another seat.

Boarding gate at LAX was too crowded—two gates next to one another

The flight was delayed about an hour for a maintenance specialist to approve the maintenance repair

Seats are absolutely not comfortable and large enough. There’s a limit and you stepped over it. I understand that there’s a business class, however for the price it costs, it’s just plain stupid for a 50 minute flight.

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.

Everything you need to know for your flight to South America

Information on your arrival and departure airports