$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 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$572
Bogotá
Bogotá1 stop$333
Medellín
Medellín2 stops$328
Buenos Aires
Buenos Aires1 stop$780
Sao Paulo
Sao Paulononstop$581
Rio de Janeiro
Rio de Janeiro2 stops$668
Santiago
Santiago2 stops$771
Cartagena
Cartagena1 stop$285
Quito
Quito1 stop$351
Guayaquil
Guayaquil1 stop$331
Cali
Cali1 stop$399
Cusco
Cusco2 stops$738
Georgetown
Georgetown1 stop$507
Pereira
Pereira3 stops$473
Barranquilla
Barranquilla1 stop$315
Montevideo
Montevideo1 stop$879
Santa Marta
Santa Marta1 stop$334
Asuncion
Asuncion1 stop$846
Lima
Lima1 stop$572
Bogotá
Bogotá1 stop$333
Medellín
Medellín2 stops$328
Buenos Aires
Buenos Aires1 stop$780
Sao Paulo
Sao Paulononstop$581
Rio de Janeiro
Rio de Janeiro2 stops$668
Santiago
Santiago2 stops$771
Cartagena
Cartagena1 stop$285
Quito
Quito1 stop$351
Guayaquil
Guayaquil1 stop$331
Cali
Cali1 stop$399
Cusco
Cusco2 stops$738
Georgetown
Georgetown1 stop$507
Pereira
Pereira3 stops$473
Barranquilla
Barranquilla1 stop$315
Montevideo
Montevideo1 stop$879
Santa Marta
Santa Marta1 stop$334
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
$285Spirit Airlines
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
$300Spirit Airlines
Wed, Jun 10 - Wed, Jun 17
Copa Airlines Logo
4:00 pm - 8:40 am
BOS
-
CTG
17h 40m
1 stop
Copa Airlines Logo
9:45 am - 11:08 pm
CTG
-
BOS
12h 23m
1 stop
$329Copa Airlines
Thu, May 7 - Tue, May 12
Copa Airlines Logo
4:00 pm - 12:06 am
BOS
-
BOG
9h 06m
1 stop
Copa Airlines Logo
4:59 am - 2:44 pm
BOG
-
BOS
8h 45m
1 stop
$333Copa Airlines
Wed, May 27 - Tue, Jun 2
American Airlines Logo
6:00 am - 2:13 pm
BOS
-
CTG
9h 13m
1 stop
American Airlines Logo
3:15 pm - 12:59 am
CTG
-
BOS
8h 44m
1 stop
$341American Airlines
Tue, May 5 - Tue, May 12
American Airlines Logo
8:45 am - 9:17 pm
BOS
-
BOG
13h 32m
1 stop
American Airlines Logo
2:10 pm - 10:02 am
BOG
-
BOS
18h 52m
1 stop
$345American Airlines
Sun, Apr 26 - Tue, May 12
LATAM Airlines Logo
11:15 am - 9:55 pm
BOS
-
LIM
11h 40m
1 stop
LATAM Airlines Logo
12:05 pm - 1:23 am
LIM
-
BOS
12h 18m
1 stop
$572LATAM Airlines
Sun, Jun 21 - Sun, Jun 28
LATAM Airlines Logo
9:55 am - 8:40 pm
BOS
-
GRU
9h 45mnonstop
LATAM Airlines Logo
10:45 pm - 7:35 am
GRU
-
BOS
9h 50mnonstop
$581LATAM Airlines
Tue, May 5 - Wed, May 13
Delta Logo
5:30 pm - 5:00 am
BOS
-
LIM
12h 30m
1 stop
Delta Logo
1:30 pm - 3:08 pm
LIM
-
BOS
24h 38m
1 stop
$587Delta
Thu, Jul 9 - Wed, Aug 5
Delta Logo
9:55 am - 12:35 pm
BOS
-
CNF
25h 40m
1 stop
Delta Logo
5:00 am - 11:33 pm
CNF
-
BOS
19h 33m
2 stops
$702Delta
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 $257 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 $618.

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 $833 and $684 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 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 8423 reviews
8.5Crew
7.9Comfort
7.2Food
7.8Entertainment
8.1Boarding
Airline reviews

The flight was way too HOT! And the plane did not have any in-flight TV entertainment.

6.0 GoodEvelyn, Apr 2026
MDT - ATL
Read more Delta reviews

The flight was way too HOT! And the plane did not have any in-flight TV entertainment.

Boarding was good. The flight was on time ( arrival was 20 minutes early). Inflight service was average ( US airlines have not mastered the skills of customer service yet). The food was mediocre. “ breakfast “ was downright awful and insulting. It was a piece of dough with mon descript filling that was supposed to be cheese omelette).

The tray table was broken and the food was terrible.

The gentleman at the gate I think his name is RIE was exceptional

While they turned off most cabin lights to allow people to sleep, I was bothered by how bright the side lights still were. It was still quite bright for me in a window seat, when I wish I could have slept!

One of the flight attendants was a little cranky. I appreciated the free wifi and plug to charge my laptop

No entertainment. Plane was so small had to pink tag a carry on ive used for 20 years easily on board. The fact the flight got in at midnight, had to wait for crew in fort wayne to allow the plane to approach the gate, THEN had to wait for bag on jet bridge made experience irritating at best.

Crew was great. Near on time departure and early arrival. Snacks are always meh. Not a fan of the "pay for everything including miles " proposal unless base flight rate going to be 100 bucks.

Would have been better if there was a nonstop flight from Tampa to Norfolk or Tampa to New Port News.

Overall Good! The weather delayed our takeoff from Atlanta and our arrival in Miami! If Mother Nature can mess up a flight she will do it every time!

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

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

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 .

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

The seat was comfortable, the attendants were very nice and WiFi made my life so much easier with work. Kudos!

Flight was 3 hours delayed. They gave our plan to two other routes. Need to knock that off.

To have arrived on time and not 3 hours late after having already spent $100 to change to an earlier flight, only to arrive back home close to the original flight time.

No gate in Rome. Had stairs. Got separated from my wife in a wheel chair. Customs was a zoo. If AA doesnt have landing rights, it should be advertised.

I almost missed my flight and they helped me out enormously

Business class was very good, one of my best flights

The "on the ground" A/C was not working. It was so hot while waiting to get in the air, a passenger from the rear of the plan declared "I just can't!" and waited in the gangway until time to close the doors. It was miserable. But the crew were champs and had an amazing attitude. I know they were as miserable as we were but didn't let that affect their performance.

The captain announced to the cabin there would be a delay because they observed a "cut" on a tire during precheck that needed to be cleared by maintenance. We were delayed during this inspection and allowed to proceed after maintenance "measured the cut and decided it was acceptable". My complaint is not about the delay or due diligence. I wish the captain had been more generic when making his announcement. I was a nervous wreck all the way to Charlotte worried that we would have a blowout when landing!

The SFO Lounge crew were amazing. The bartender Faris was great. Thanks!

The flight was on time and the landing was very smooth. The crew and flight attendants were all very friendly and professional.

The crew was great! They waited for me as Air Canada flight was delayed by 1:15 hours from Ottawa to Toronto. I am a bit disappointed that we could only use wifi for entertainment but I survived! The only thing I would of liked is a more comfortable seat. The seat cushions are not thick enough for flights longer than 3 hours. Aside from that, everything was great.

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