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$354+ 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 12/14. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BUE
Jul 6 — Jul 131
Sun 7/6
Sun 7/13
1 adult, Economy
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Cheapflights Tip: The best prices from Boston Logan Intl to Buenos Aires are usually found in October or November, booked 39 days in advance, depart on a Monday or Wednesday and return on a Wednesday

Cheap 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 July 1, 2025.

Round-trip from

$752
(LATAM Airlines)

One-way from

$354
(Gurufare)

Popular in

December

Cheapest in

October

Average price

$1,253
From Boston Logan Intl to Buenos Aires (BUE)
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One-way flight from Boston Logan Intl to Buenos Aires (BUE)
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Highest demand for flights based on searches. 5% potential increase in price ($68 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find 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 July 1, 2025.

This LATAM Airlines deal was found by Cheapflights users on 6/30. 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.
Fri 12/128:55 amBOS - EZE
1 stop14h 35mLATAM Airlines
Thu 12/185:44 amEZE - BOS
2 stops19h 40mLATAM Airlines
Deal found 6/30$752
This Priceline deal was found by Cheapflights users on 6/30. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/174:50 pmBOS - EZE
2 stops31h 35mAvianca
Fri 10/242:30 amEZE - BOS
3 stops37h 20mAvianca
Deal found 6/30$800
This Mytrip deal was found by Cheapflights users on 6/29. 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.
Wed 8/204:50 pmBOS - AEP
3 stops31h 45mMultiple Airlines
Tue 8/2612:05 amAEP - BOS
3 stops39h 25mMultiple Airlines
Deal found 6/29$821
This Mytrip deal was found by Cheapflights users on 6/30. 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.
Sat 9/279:00 amBOS - EZE
1 stop14h 10mMultiple Airlines
Sat 10/42:30 amEZE - BOS
2 stops22h 25mMultiple Airlines
Deal found 6/30$845
This LATAM Airlines deal was found by Cheapflights users on 6/30. 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.
Wed 10/83:50 pmBOS - AEP
2 stops16h 50mLATAM Airlines
Tue 10/146:20 pmAEP - BOS
2 stops17h 59mLATAM Airlines
Deal found 6/30$850
This Flysmarter deal was found by Cheapflights users on 6/29. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/219:00 amBOS - AEP
1 stop19h 40mAvianca
Fri 9/57:00 amAEP - BOS
1 stop25h 15mAvianca
Deal found 6/29$862

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 July 1, 2025.
Use the filters below to find and compare flights from Boston to Buenos Aires that are best for you.

Fly from

Boston

Fly to

Buenos Aires

Route

Depart

Return

Price

BostonBuenos Aires

BOS - EZE

BOSEZE

Boston Logan Intl

Fri 12/12

8:55 am-1:30 am

1 stop14h 35m

Buenos Aires Ministro Pistarini

Thu 12/18

5:44 am-11:24 pm

2 stops19h 40m

$752

BostonBuenos Aires

BOS - EZE

BOSEZE

Boston Logan Intl

Fri 10/17

4:50 pm-1:25 am

2 stops31h 35m

Buenos Aires Ministro Pistarini

Fri 10/24

2:30 am-2:50 pm

3 stops37h 20m

$800

BostonBuenos Aires

BOS - AEP

BOSAEP

Boston Logan Intl

Wed 8/20

4:50 pm-1:35 am

3 stops31h 45m

Buenos Aires Jorge Newbery

Tue 8/26

12:05 am-2:30 pm

3 stops39h 25m

$821

BostonBuenos Aires

BOS - EZE

BOSEZE

Boston Logan Intl

Sat 9/27

9:00 am-12:10 am

1 stop14h 10m

Buenos Aires Ministro Pistarini

Sat 10/4

2:30 am-11:55 pm

2 stops22h 25m

$845

BostonBuenos Aires

BOS - AEP

BOSAEP

Boston Logan Intl

Thu 8/21

9:00 am-5:40 am

1 stop19h 40m

Buenos Aires Jorge Newbery

Fri 9/5

7:00 am-7:15 am

1 stop25h 15m

$862

BostonBuenos Aires

BOS - AEP

BOSAEP

Boston Logan Intl

Wed 9/24

5:25 pm-4:05 pm

2 stops21h 40m

Buenos Aires Jorge Newbery

Tue 9/30

3:40 pm-4:00 pm

2 stops25h 20m

$900

BostonBuenos Aires

BOS - EZE

BOSEZE

Boston Logan Intl

Sun 12/14

7:30 pm-3:25 am

1 stop29h 55m

$354

BostonBuenos Aires

BOS - EZE

BOSEZE

Boston Logan Intl

Sun 8/17

4:50 pm-1:25 am

2 stops31h 35m

$359

BostonBuenos Aires

BOS - EZE

BOSEZE

Boston Logan Intl

Sun 8/17

6:55 pm-12:45 am

3 stops52h 50m

$365

BostonBuenos Aires

BOS - AEP

BOSAEP

Boston Logan Intl

Tue 7/15

6:10 am-9:20 am

3 stops50h 10m

$374

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

Showing 1-10 of 18 results
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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 June 27, 2025.

Booking 39 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, April is the cheapest month in which you can book a flight from Boston to Buenos Aires (average of $795). Flying from Boston to Buenos Aires in December is currently the most expensive (average of $1,260). 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 is the cheapest time of day to fly from BOS to BUE?

Find hourly flight availability from Boston to Buenos Aires. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 1, 2025.

It’s typically best to fly out from Boston to Buenos Aires in the morning. Doing so could potentially save you 16% on the flight price compared to flying at noon, which is usually more expensive.

What is the cheapest day to fly from Boston to Buenos Aires?

Use this chart to determine the cheapest time to fly round-trip from Boston to Buenos Aires. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Boston to Buenos Aires flight should consider departing on Tuesday mornings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 July 1, 2025.
See what other customers who have flown with Delta, LATAM Airlines, and Copa 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
8.0
Very good
7,973 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,973 reviews
Delta
8.0
Very good
7,973 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
LATAM Airlines
7.5
Good
1,801 reviews
Delta
8.0
Very good
7,973 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Copa Airlines
7.5
Good
1,465 reviews
Delta
8.0
Very good
7,973 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,858 reviews
Delta
8.0
Very good
7,973 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,973 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

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

    According to our current data, LATAM Airlines ($752), and Avianca ($800) offers the cheapest pricing from Boston to Buenos Aires. These flights start at 37% 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 $354. However, be on the lookout for offers from Avianca and LATAM Airlines, as they are both options that can get you from Boston to Buenos Aires for a low price.

  • Where are the most common layover locations when flying from Boston to Buenos Aires?

    Of the flights from Boston to Buenos Aires that have layovers, most of them stop in New York.

  • What are some popular things to do or see while on a layover in New York?

    The majority of New York visitors spend their time at Times Square, New York City Center, and Madison Square Garden. Times Square, New York City Center, and Madison Square Garden are located about 13.6 mi, 13.6 mi, and 13.6 mi, respectively from New York John F Kennedy Intl. Travelers can rent a car at New York John F Kennedy Intl for an average daily rate of $74 to make sightseeing during their layover a little easier.

  • Where are the least popular layover locations for Boston to Buenos Aires flights?

    Boston to Buenos Aires flights that have layovers will least frequently stop in Miami.

  • 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, April is the cheapest month in which you can book a flight from Boston to Buenos Aires (average of $795). Flying from Boston to Buenos Aires in December is currently the most expensive (average of $1,260). 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

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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 July 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
LATAM AirlinesCheapest$527Average$1,075FlexibilityNo cancel feeOn-time81%
AviancaCheapest$603Average$786FlexibilityNo cancel feeOn-time71%
Copa AirlinesCheapest$649Average$1,379FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$996Average$1,281FlexibilityNo cancel feeOn-time71%
DeltaCheapest$1,040Average$1,232FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$1,090Average$1,353FlexibilityNo cancel feeOn-time69%

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