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Cheap flights from Boston to South America from $146

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to South America departing on 9/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Spirit Airlines Logo
6:10 am - 1:14 pmBOS-MDE
8h 04m1 stop
Spirit Airlines Logo
1:24 am - 11:13 amMDE-BOS
8h 49m1 stop
$334Spirit Airlines
Find Deal
Sun, Sep 14 - Thu, Sep 25
Spirit Airlines Logo
6:10 am - 1:14 pmBOS-MDE
8h 04m1 stop
Spirit Airlines Logo
1:24 am - 11:13 amMDE-BOS
8h 49m1 stop
$335Spirit Airlines
Find Deal
Mon, Sep 15 - Tue, Sep 23
Copa Airlines Logo
3:49 pm - 10:10 amBOS-BOG
19h 21m1 stop
Copa Airlines Logo
6:10 am - 10:03 pmBOG-BOS
15h 53m1 stop
$384Copa Airlines
Find Deal
Mon, Oct 27 - Tue, Nov 4
Copa Airlines Logo
8:41 am - 10:45 pmBOS-LIM
15h 04m1 stop
Copa Airlines Logo
2:15 am - 11:03 pmLIM-BOS
19h 48m1 stop
$453Copa Airlines
Find Deal
Fri, Oct 24 - Fri, Oct 31
LATAM Airlines Logo
9:55 am - 9:30 amBOS-CNF
22h 35m1 stop
LATAM Airlines Logo
1:40 pm - 11:09 amCNF-BOS
22h 29m2 stops
$495LATAM Airlines
Find Deal
Thu, Oct 2 - Sun, Oct 12
LATAM Airlines Logo
5:00 pm - 3:25 pmBOS-CNF
20h 25m2 stops
LATAM Airlines Logo
3:25 pm - 10:20 amCNF-BOS
20h 55m2 stops
$497LATAM Airlines
Find Deal
Mon, Nov 3 - Sun, Nov 16
American Airlines Logo
1:05 pm - 10:20 amBOS-CNF
20h 15m2 stops
American Airlines Logo
3:30 pm - 10:16 amCNF-BOS
19h 46m2 stops
$512American Airlines
Find Deal
Thu, Oct 2 - Wed, Oct 15
American Airlines Logo
4:30 pm - 2:40 pmBOS-CNF
21h 10m2 stops
American Airlines Logo
8:40 pm - 11:33 amCNF-BOS
16h 53m2 stops
$513American Airlines
Find Deal
Mon, Oct 27 - Sun, Nov 9
Delta Logo
9:55 am - 9:35 amBOS-GIG
22h 40m1 stop
Delta Logo
7:55 pm - 7:35 amGIG-BOS
12h 40m1 stop
$544Delta
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Mon, Sep 15 - Wed, Sep 24
Delta Logo
9:55 am - 9:35 amBOS-GIG
22h 40m1 stop
Delta Logo
3:20 pm - 4:00 pmGIG-BOS
25h 40m2 stops
$554Delta
Find Deal
Mon, Sep 15 - Wed, Sep 24

Avianca flights from Boston to South America

Our best Avianca deals on Boston to South America flight tickets
Avianca
Sep 16
BOS9:00 amBoston Logan Intl
6h 10m
BOG2:10 pmBogotá El Dorado
Sep 24
BOG11:55 pmBogotá El Dorado
6h 20m
BOS7:15 amBoston Logan Intl
$390
Find similar
Avianca
Sep 16
BOS9:00 amBoston Logan Intl
6h 10m
BOG2:10 pmBogotá El Dorado
Sep 25
BOG3:59 amBogotá El Dorado
9h 56m
1 stop
BOS2:55 pmBoston Logan Intl
$391
Find similar
Avianca
Oct 26
BOS4:25 pmBoston Logan Intl
10h 25m
1 stop
BOG1:50 amBogotá El Dorado
Oct 31
BOG12:10 amBogotá El Dorado
6h 25m
BOS7:35 amBoston Logan Intl
$392
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Spirit Airlines flights from Boston to South America

Our best Spirit Airlines deals on Boston to South America flight tickets
Spirit Airlines
Sep 14
BOS6:10 amBoston Logan Intl
8h 04m
1 stop
MDE1:14 pmMedellín Jose Maria Cordova Intl
Sep 25
MDE1:24 amMedellín Jose Maria Cordova Intl
8h 49m
1 stop
BOS11:13 amBoston Logan Intl
$334
Find similar
Spirit Airlines
Sep 15
BOS6:10 amBoston Logan Intl
8h 04m
1 stop
MDE1:14 pmMedellín Jose Maria Cordova Intl
Sep 23
MDE1:24 amMedellín Jose Maria Cordova Intl
8h 49m
1 stop
BOS11:13 amBoston Logan Intl
$335
Find similar
Spirit Airlines
Sep 14
BOS6:10 amBoston Logan Intl
8h 04m
1 stop
MDE1:14 pmMedellín Jose Maria Cordova Intl
Sep 22
MDE1:24 amMedellín Jose Maria Cordova Intl
8h 49m
1 stop
BOS11:13 amBoston Logan Intl
$336
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Boston to South America that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 29, 2025.
Use the filters below to find and compare flights from Boston to South America that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonMedellín

BOS - MDE

BOSMDE

Boston Logan Intl

Sun 9/14

6:10 am-1:14 pm

1 stop8h 04m

Medellín Jose Maria Cordova Intl

Thu 9/25

1:24 am-11:13 am

1 stop8h 49m

$334

BostonMedellín

BOS - MDE

BOSMDE

Boston Logan Intl

Mon 9/15

6:10 am-1:14 pm

1 stop8h 04m

Medellín Jose Maria Cordova Intl

Tue 9/23

1:24 am-11:13 am

1 stop8h 49m

$335

BostonBogotá

BOS - BOG

BOSBOG

Boston Logan Intl

Mon 10/27

3:49 pm-10:10 am

1 stop19h 21m

Bogotá El Dorado

Tue 11/4

6:10 am-10:03 pm

1 stop15h 53m

$384

BostonLima

BOS - LIM

BOSLIM

Boston Logan Intl

Fri 10/24

8:41 am-10:45 pm

1 stop15h 04m

Lima J Chavez Intl

Fri 10/31

2:15 am-11:03 pm

1 stop19h 48m

$453

BostonBelo Horizonte

BOS - CNF

BOSCNF

Boston Logan Intl

Thu 10/2

9:55 am-9:30 am

1 stop22h 35m

Belo Horizonte Tancredo Neves Intl

Sun 10/12

1:40 pm-11:09 am

2 stops22h 29m

$495

BostonBelo Horizonte

BOS - CNF

BOSCNF

Boston Logan Intl

Mon 11/3

5:00 pm-3:25 pm

2 stops20h 25m

Belo Horizonte Tancredo Neves Intl

Sun 11/16

3:25 pm-10:20 am

2 stops20h 55m

$497

BostonBelo Horizonte

BOS - CNF

BOSCNF

Boston Logan Intl

Thu 10/2

1:05 pm-10:20 am

2 stops20h 15m

Belo Horizonte Tancredo Neves Intl

Wed 10/15

3:30 pm-10:16 am

2 stops19h 46m

$512

BostonBelo Horizonte

BOS - CNF

BOSCNF

Boston Logan Intl

Mon 10/27

4:30 pm-2:40 pm

2 stops21h 10m

Belo Horizonte Tancredo Neves Intl

Sun 11/9

8:40 pm-11:33 am

2 stops16h 53m

$513

BostonRio de Janeiro

BOS - GIG

BOSGIG

Boston Logan Intl

Mon 9/15

9:55 am-9:35 am

1 stop22h 40m

Rio de Janeiro–Galeão Intl

Wed 9/24

7:55 pm-7:35 am

1 stop12h 40m

$544

BostonRio de Janeiro

BOS - GIG

BOSGIG

Boston Logan Intl

Mon 9/15

9:55 am-9:35 am

1 stop22h 40m

Rio de Janeiro–Galeão Intl

Wed 9/24

3:20 pm-4:00 pm

2 stops25h 40m

$554

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Boston to South America

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to South America?

In general, November is the cheapest month to fly from Boston to South America. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $474. If you aren’t able to travel during the month of November, then book flights to South America from Boston during September instead. Flights to South America in September, while not as cheap as those in November, still average around $516.

What is the cheapest day to depart on your flight to South America?

The cheapest day to depart from Boston to South America is on a Monday when prices can be found for as low as $531. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Boston to South America for around $635.

What is the cheapest time of day to depart on your flight to South America?

Our data shows that the cheapest Boston to South America flights are usually those with departure times in the evening. Our users have found flights to South America in the evening for as low as $508. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $594 on average. Flights to South America from Boston in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Boston Logan Intl to South America flight route?

Fly from Boston Logan Intl to Bogotá El Dorado for the best Boston Logan Intl - South America flight prices

How far in advance should I book a flight to South America?

You are more likely to see cheaper flights to South America from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to South America for around $627 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to South America from Boston for as low as $535 on momondo.

What cabin class options are available on Boston Logan Intl to South America flights?

There are 4 cabin classes available to choose from on Boston Logan Intl to South America flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Boston to South America flights?

You could potentially save up to 57% on your flight if you consider stops on a Boston to South America flight.

Cheap Boston to South America flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to South America

Best Price Found

$228

Fastest flight time

6h 10m

Direct flights

Mon, Tue, Wed, Fri and Sun

Airports in South America

2 airports
The best one-way flight to South America from Boston in the past 72 hours is $228. The best round-trip flight deal from Boston to South America found on momondo in the last 72 hours is $479.
The fastest flight from Boston to South America takes 6h 10m
Direct flights go from Boston to South America on Monday, Tuesday, Wednesday, Friday and Sunday. There are no airlines offering direct flights.
There are 2 airports near South America: Bogotá El Dorado (BOG), Sao Paulo Guarulhos Intl (GRU)
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  • When did momondo last update prices for flights from Boston Logan Intl Airport to South America?

    Prices for flights from Boston Logan Intl Airport to South America are updated daily.

  • How many operators does momondo search for flights from Boston Logan Intl Airport to South America?

  • How old do you have to be to fly from Boston Logan Intl Airport to South America?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Boston Logan Intl Airport to South America.

  • What documentation or ID do you need to fly to South America?

    The travel and health documents you'll need for your trip to South America may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at South America. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Boston to South America?

Best airlines flying from Boston to South America

Compare and see reviews for airlines that fly from Boston to South America with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $234Free CancellationRating
7.4
8,941 reviews
Search United Airlines flights
Spirit AirlinesPriceFrom $248Free CancellationRating
6.3
8,021 reviews
Search Spirit Airlines flights
AviancaPriceFrom $287Free CancellationRating
6.7
2,420 reviews
Search Avianca flights
DeltaPriceFrom $304Free CancellationRating
7.9
7,979 reviews
Search Delta flights
LATAM AirlinesPriceFrom $311Free CancellationRating
7.5
1,843 reviews
Search LATAM Airlines flights
Copa AirlinesPriceFrom $311Free CancellationRating
7.5
1,517 reviews
Search Copa Airlines flights
American AirlinesPriceFrom $329Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
GOLPriceFrom $341Free CancellationRating
7.3
1,099 reviews
Search GOL flights
JetBluePriceFrom $421Free CancellationRating
7.2
2,920 reviews
Search JetBlue flights
Air CanadaPriceFrom $591Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights

Why use momondo?

Why should I use momondo to find a flight deal from Boston to South America?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Boston to South America. momondo saves you time and could save you money on your trip.

Can I find flights from Boston to South America with flexible booking policies on momondo?

Flights from Boston to South America with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Boston to South America?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Boston to South America.

I’m not ready to book a flight from Boston to South America right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Boston to South America flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your South America trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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Find better results for your trip to South America

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Popular flights according to clicks in the last 7 days on momondo
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