HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Buenos Aires

$254+ Cheap flights from Boston (BOS) to Buenos Aires (BUE)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/1. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BUE
Apr 8 — Apr 151
Wed 4/8
Wed 4/15
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Boston to Buenos Aires with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Boston to Buenos Aires

Cheapest flights from Boston to Buenos Aires
Explore the most affordable flight options available from Boston to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 9, 2026.

This Mytrip deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/96:01 am
BOS
-
AEP
2 stops25h 29m
Multiple Airlines
Sun 4/199:35 am
AEP
-
BOS
3 stops28h 42m
Multiple Airlines
Deal found 3/4$656
This Mytrip deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/36:01 am
BOS
-
AEP
3 stops38h 29m
Multiple Airlines
Sun 4/195:45 am
AEP
-
BOS
3 stops32h 32m
Multiple Airlines
Deal found 3/4$713
This LATAM Airlines deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/239:55 am
BOS
-
AEP
1 stop24h 50m
LATAM Airlines
Wed 3/2511:30 am
AEP
-
BOS
2 stops24h 40m
LATAM Airlines
Deal found 3/5$729
This Mytrip deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/96:01 am
BOS
-
EZE
2 stops20h 44m
Multiple Airlines
Sun 4/1912:15 pm
EZE
-
BOS
3 stops26h 02m
Multiple Airlines
Deal found 3/4$745
This Mytrip deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/148:45 am
BOS
-
EZE
2 stops28h 45m
Multiple Airlines
Tue 4/214:50 pm
EZE
-
BOS
2 stops21h 27m
Multiple Airlines
Deal found 3/8$748
This Mytrip deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/36:01 am
BOS
-
AEP
2 stops25h 29m
Multiple Airlines
Fri 4/109:35 am
AEP
-
BOS
3 stops29h 20m
Multiple Airlines
Deal found 3/4$750
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/112:15 pm
BOS
-
EZE
1 stop14h 08m
Multiple Airlines
Thu 5/144:50 pm
EZE
-
BOS
2 stops31h 35m
Multiple Airlines
Deal found 3/6$762
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1112:15 pm
BOS
-
EZE
1 stop14h 08m
Multiple Airlines
Thu 9/2411:00 am
EZE
-
BOS
2 stops23h 05m
Multiple Airlines
Deal found 3/6$773
This Mytrip deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/96:01 am
BOS
-
EZE
2 stops20h 44m
Multiple Airlines
Tue 4/144:50 pm
EZE
-
BOS
2 stops21h 27m
Multiple Airlines
Deal found 3/7$779
This Mytrip deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2812:15 pm
BOS
-
EZE
1 stop14h 08m
Multiple Airlines
Tue 9/221:35 am
EZE
-
BOS
1 stop30h 35m
Multiple Airlines
Deal found 3/7$781
This Orbitz deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1112:15 pm
BOS
-
EZE
1 stop14h 08m
Multiple Airlines
Fri 9/184:50 pm
EZE
-
BOS
1 stop15h 00m
Multiple Airlines
Deal found 3/7$784
This Orbitz deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/1912:15 pm
BOS
-
EZE
1 stop14h 08m
Multiple Airlines
Fri 6/267:10 am
EZE
-
BOS
1 stop24h 40m
Multiple Airlines
Deal found 3/9$792

Find flight deals from Boston to Buenos Aires

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Buenos Aires (BUE). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 9, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$656
(Mytrip)

One-way from

$254
(Kiwi.com)

Popular in

July

Cheapest in

September

Average price

$1,095
Provider with most accurate pricing for Boston Logan Intl-Buenos Aires (BUE) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Buenos Aires (BUE) flights.
Search Deals
From Boston Logan Intl to Buenos Aires (BUE)
Search Deals
One-way flight from Boston Logan Intl to Buenos Aires (BUE)
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($105 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston to Buenos Aires 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, Cheapflights users made 2,558,603 searches. Data last updated March 9, 2026.
Use the filters below to find and compare flights from Boston to Buenos Aires that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonBuenos Aires

BOS - AEP

BOSAEP

Boston Logan Intl

Thu 4/9

6:01 am-11:20 am

3 stops28h 19m

Buenos Aires Jorge Newbery

Sun 4/19

9:35 am-1:17 pm

3 stops28h 42m

$666

BostonBuenos Aires

BOS - AEP

BOSAEP

Boston Logan Intl

Thu 4/9

6:01 am-8:30 am

2 stops25h 29m

Buenos Aires Jorge Newbery

Tue 4/14

7:00 am-1:17 pm

2 stops31h 17m

$788

BostonBuenos Aires

BOS - AEP

BOSAEP

Boston Logan Intl

Tue 4/14

6:01 am-8:30 am

2 stops25h 29m

Buenos Aires Jorge Newbery

Tue 4/21

7:00 am-1:17 pm

2 stops31h 17m

$822

BostonBuenos Aires

BOS - EZE

BOSEZE

Boston Logan Intl

Thu 4/9

6:01 am-3:00 am

2 stops19h 59m

Buenos Aires Ministro Pistarini

Tue 4/14

4:50 pm-7:06 pm

3 stops27h 16m

$828

BostonBuenos Aires

BOS - AEP

BOSAEP

Boston Logan Intl

Mon 4/27

11:20 am-9:20 pm

3 stops33h 00m

Buenos Aires Jorge Newbery

Mon 5/4

7:00 am-10:29 am

3 stops28h 29m

$848

BostonBuenos Aires

BOS - EZE

BOSEZE

Boston Logan Intl

Sun 5/3

10:20 pm-3:23 am

1 stop28h 03m

Buenos Aires Ministro Pistarini

Wed 5/13

4:50 pm-11:57 pm

2 stops32h 07m

$857

BostonBuenos Aires

BOS - AEP

BOSAEP

Boston Logan Intl

Mon 3/23

1:55 pm-2:00 pm

2 stops23h 05m

Buenos Aires Jorge Newbery

Wed 3/25

12:40 pm-3:09 pm

3 stops27h 29m

$881

BostonBuenos Aires

BOS - EZE

BOSEZE

Boston Logan Intl

Wed 3/18

9:55 am-2:55 am

1 stop16h 00m

Buenos Aires Ministro Pistarini

Tue 3/24

11:00 am-10:22 am

1 stop24h 22m

$934

BostonBuenos Aires

BOS - AEP

BOSAEP

Boston Logan Intl

Wed 4/22

5:55 am-11:20 am

3 stops28h 25m

Buenos Aires Jorge Newbery

Wed 4/29

12:15 pm-7:10 am

2 stops19h 55m

$960

BostonBuenos Aires

BOS - AEP

BOSAEP

Boston Logan Intl

Mon 3/16

9:55 am-9:40 am

1 stop22h 45m

Buenos Aires Jorge Newbery

Mon 3/30

8:05 pm-1:10 pm

2 stops18h 05m

$962

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/8

Showing 1-10 of 35 resultsSorted by cheapest first
1
2
3
4

Compare providers for flights from Boston to Buenos Aires

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boston to Buenos Aires in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy1 starTrust Score*2 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Boston-Buenos Aires flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boston-Buenos Aires flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boston-Buenos Aires flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boston-Buenos Aires flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boston-Buenos Aires flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Boston to Buenos Aires

Have a flexible travel schedule? Discover the best time to fly to Buenos Aires from Boston with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Boston to Buenos Aires

How far ahead should I book a flight from Boston to Buenos Aires?

Use this chart to determine the optimal time to book a round-trip flight from Boston to Buenos Aires. Price data was last updated on March 6, 2026.

Booking 51 days in advance of your planned departure date is, on average, the best time to get cheap flights from Boston to Buenos Aires. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Boston to Buenos Aires?

Currently, February is the cheapest month in which you can book a flight from Boston to Buenos Aires (average of $486). Flying from Boston to Buenos Aires in April is currently the most expensive (average of $990). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What’s the top layover airport for flights from Boston to Buenos Aires?

Share of 1-stop round-trip flights from Boston to Buenos Aires chosen by Cheapflights users in the past 12 months, using the same layover each way.

Panama City (PTY) – chosen by Cheapflights users on 86% of 1-stop itineraries from Boston to Buenos Aires on Cheapflights.

What’s the cheapest layover airport for flights from Boston to Buenos Aires?

Average round-trip fare for 1-stop flights from Boston to Buenos Aires, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Atlanta (ATL) is the most affordable 1-stop option, with an average round-trip price of $1,201.

What’s the fastest layover option from Boston to Buenos Aires?

Shortest average travel time for 1-stop one-way flights from Boston to Buenos Aires, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Atlanta (ATL) have the shortest average one-way travel time for 1-stop routes: 14h 05m.

Which airport typically offers the quickest layover for flights from Boston to Buenos Aires?

Average layover duration for 1-stop one-way flights from Boston to Buenos Aires, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Atlanta (ATL) offer the fastest connection on this route, with an average layover time of 1h 20m.

Reviews of airlines servicing Buenos Aires

Get insights into the airlines that provide service to Buenos Aires. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Buenos Aires. Reviews last updated March 9, 2026.
See what other customers who have flown with Delta,Copa Airlines, andLATAM Airlines from Boston to Buenos Aires have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,271 reviews

Food

7.2

Boarding

8.1

Overall

7.9

Comfort

7.9

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,271 reviews
Delta
7.9
Good
8,271 reviews

Food

7.2

Boarding

8.1

Overall

7.9

Comfort

7.9

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Copa Airlines
7.5
Good
1,567 reviews
Delta
7.9
Good
8,271 reviews

Food

7.2

Boarding

8.1

Overall

7.9

Comfort

7.9

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
LATAM Airlines
7.4
Good
1,917 reviews
Delta
7.9
Good
8,271 reviews

Food

7.2

Boarding

8.1

Overall

7.9

Comfort

7.9

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,408 reviews
Delta
7.9
Good
8,271 reviews

Food

7.2

Boarding

8.1

Overall

7.9

Comfort

7.9

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.1
Good
11,403 reviews
Delta
7.9
Good
8,271 reviews

Food

7.2

Boarding

8.1

Overall

7.9

Comfort

7.9

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Boston to Buenos Aires. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Boston to Buenos Aires?

    Most people fly from Boston Logan Intl (BOS) if they book a flight from Boston to Buenos Aires. On average, Logan Intl has 0 outbound flights to Buenos Aires per day from 6 airlines. Boston Logan Intl is conveniently located just 2.6 mi from Boston’s city center.

  • How long is the flight from Boston to Buenos Aires?

    A quick flight from Boston to Buenos Aires can take about 16h. LATAM Airlines provides one of the quickest options available for as low as $934. The distance from Boston to Buenos Aires is about 5387 mi.

  • What are the cheapest airlines flying from Boston to Buenos Aires round-trip?

    According to our current data, Avianca ($371), LATAM Airlines ($486), and Copa Airlines ($531) offers the cheapest pricing from Boston to Buenos Aires. These flights start at 67% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Boston to Buenos Aires one-way?

    The cheapest airline one-way is Arajet, with whom users have recently found tickets for as low as $335. However, be on the lookout for offers from Avianca and Copa Airlines, as they are both options that can get you from Boston to Buenos Aires for a low price.

  • Can I find deals for flights from Boston to Buenos Aires that include hotel bookings?

    Yes. In addition to deals on Boston to Buenos Aires flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to Buenos Aires?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Buenos Aires.

  • Can I find deals for business class flights from Boston to Buenos Aires?

    Yes. Cheapflights offers flight deals from Boston to Buenos Aires by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Boston to Buenos Aires?

    Currently, February is the cheapest month in which you can book a flight from Boston to Buenos Aires (average of $486). Flying from Boston to Buenos Aires in April is currently the most expensive (average of $990). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Boston to Buenos Aires

See prices for flight routes from nearby airports that may be better suited for you.
Boston to Ministro Pistarini flights
Boston to Mendoza flights

Top 6 airlines flying from Boston to Buenos Aires

Discover the top 6 airlines that operate flights from Boston to Buenos Aires. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 9, 2026.
AirlineCheapestAverageFlexibilityOn-time
AviancaCheapest$371Average$786FlexibilityNo cancel feeOn-time71%
LATAM AirlinesCheapest$486Average$1,160FlexibilityNo cancel feeOn-time81%
Copa AirlinesCheapest$531Average$1,109FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$861Average$1,325FlexibilityNo cancel feeOn-time69%
DeltaCheapest$905Average$1,301FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$1,055Average$1,292FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.