BOS - BUE

$254 Find Cheap Flights from Boston to Buenos Aires

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 Buenos Aires departing on 3/16. 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 Buenos Aires

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Buenos Aires.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Buenos Aires.
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Everything you should know

Cheapest round-trip
$662
Overall average: $1,201
Multiple Airlines
Mon 3/16Mon 3/30
BOS - EZE • 2 stops
Cheapest one-way
$255
Typical prices: $488-$553
Multiple Airlines
Mon 3/16
BOS - EZE • 2 stops
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When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 26% compared to booking last minute.
Insights
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When to travel
September
Cheapest • 10% price drop
December
Most popular
Good to know
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boston to Buenos Aires (BOS-BUE)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to Buenos Aires 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 Buenos Aires

Mon, Mar 16 - Mon, Mar 30
Multiple Airlines Logo
6:01 am - 4:35 am
BOS
-
EZE
21h 34m
2 stops
Multiple Airlines Logo
4:45 am - 1:55 pm
EZE
-
BOS
34h 10m
2 stops
$662Multiple Airlines
Fri, May 1 - Thu, May 7
Multiple Airlines Logo
12:15 pm - 3:23 am
BOS
-
EZE
14h 08m
1 stop
Multiple Airlines Logo
4:50 pm - 11:59 pm
EZE
-
BOS
32h 09m
2 stops
$669Multiple Airlines
Mon, Mar 23 - Mon, Mar 30
Multiple Airlines Logo
5:45 am - 11:20 am
BOS
-
AEP
28h 35m
3 stops
Multiple Airlines Logo
5:45 am - 1:55 pm
AEP
-
BOS
33h 10m
3 stops
$679Multiple Airlines
Mon, Mar 23 - Mon, Mar 30
Multiple Airlines Logo
5:45 am - 8:30 am
BOS
-
AEP
25h 45m
2 stops
Multiple Airlines Logo
12:50 pm - 1:55 pm
AEP
-
BOS
26h 05m
3 stops
$682Multiple Airlines
Mon, Mar 16 - Mon, Mar 30
Multiple Airlines Logo
6:01 am - 8:30 am
BOS
-
AEP
25h 29m
2 stops
Multiple Airlines Logo
12:50 pm - 1:55 pm
AEP
-
BOS
26h 05m
3 stops
$685Multiple Airlines
Mon, Mar 16 - Mon, Mar 30
Multiple Airlines Logo
6:01 am - 4:35 am
BOS
-
EZE
21h 34m
2 stops
Multiple Airlines Logo
5:36 am - 1:55 pm
EZE
-
BOS
33h 19m
3 stops
$693Multiple Airlines
Mon, Mar 23 - Mon, Mar 30
Multiple Airlines Logo
5:45 am - 8:30 am
BOS
-
AEP
25h 45m
2 stops
Multiple Airlines Logo
4:50 am - 1:55 pm
AEP
-
BOS
34h 05m
2 stops
$698Multiple Airlines
Mon, Mar 16 - Mon, Mar 30
Multiple Airlines Logo
6:01 am - 8:30 am
BOS
-
AEP
25h 29m
2 stops
Multiple Airlines Logo
4:50 am - 1:55 pm
AEP
-
BOS
34h 05m
2 stops
$700Multiple Airlines
Fri, May 1 - Thu, May 7
Multiple Airlines Logo
12:15 pm - 3:23 am
BOS
-
EZE
14h 08m
1 stop
Multiple Airlines Logo
1:20 pm - 4:28 pm
EZE
-
BOS
28h 08m
1 stop
$701Multiple Airlines
Wed, Apr 8 - Tue, Apr 14
Multiple Airlines Logo
6:01 am - 6:10 am
BOS
-
EZE
23h 09m
2 stops
Multiple Airlines Logo
10:45 pm - 4:58 pm
EZE
-
BOS
19h 13m
1 stop
$714Multiple Airlines
Booking Insights

KAYAK's insights & trends for Boston to Buenos Aires flights

Get data-powered insights and trends into flights from Boston to Buenos Aires to help you find the cheapest flights, the best time to fly and much more.

Find cheap flights to Buenos Aires
Find cheap flights to Buenos Aires

Planning a trip from Boston to Buenos Aires? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

How much is a round-trip flight from Boston to Buenos Aires?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Boston to Buenos Aires departing in March.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boston to Buenos Aires, 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 Buenos Aires is September, where tickets cost $1,035 (return) on average. On the other hand, the most expensive months are July and June, where the average cost of round-trip tickets is $1,287 and $1,215 respectively.

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

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 Buenos Aires, 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 Buenos Aires, you should book around 2 weeks before departure, which saves you about 26% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Good to know

Low seasonJuly
Cheapest flight$255
Best time to beat the crowds but there is an average 11% increase in price.
Most popular time to fly with an average 2% increase in price.
Flight from Boston to Buenos Aires Ministro Pistarini

When to book flights from Boston to Buenos Aires

Are your dates flexible? Find out the best times to travel from Boston to Buenos Aires based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Boston to Buenos Aires

  • Are there family-friendly flights from Boston to Buenos Aires?

    Traveling with kids can be a challenging endeavor. That's why you need to choose your flights carefully. When traveling from Boston to Buenos Aires, consider reserving your ticket with American Airlines to enjoy family-friendly travel. The airline provides real toys and Tv show entertainment to keep them energized. Also, they carry unlimited diapers onboard and allow strollers and bassinets on advance request.

  • Which airlines consider persons with limited mobility from Boston to Buenos Aires?

    Persons with reduced mobility are highly welcomed on this route. Delta Airlines provides meet-and-assist services to heighten their experience. Besides, they provide a wheelchair to facilitate movement, so you don't have to strain from check-in point to departure. The airline also offers top-of-the-line in-flight services and amenities to facilitate movement, such as accessing restrooms.

  • Can I travel with my pet from Boston to Buenos Aires?

    Multiple airlines offer pet-friendly flights. If you want to travel from Boston to Buenos Aires with your pet, consider reserving your ticket with American Airlines. The airline allows passengers to ride with their small pets in the cabin. They require you to keep the pet in a small carrier under the seat. Bigger pets are transported in cargo for comfort and safety. Increasingly, they have pocket-friendly charges.

  • How can I connect from Buenos Aires Ministro Pistarini Airport to downtown Bueno Aires?

    Three bus lines operate between EZE and the city center. Line 8, Line 51, and Line 394 operate 24/7 on the route, providing a reliable cost-savvy way to get to the city center. These buses take about 9 minutes, 60 minutes, and 45 minutes respectively, to get to the city center. Taxis are also available on this route, providing the most convenient way to get to the city center, taking about 4 minutes.

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

    In the last 3 days, the lowest price for a flight from Boston to Buenos Aires was $254 for a one-way ticket and $662 for a round-trip.

  • Do I need a passport to fly between Boston and Buenos Aires?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Boston and on arrival in Buenos Aires.

  • Which aircraft models fly most regularly from Boston to Buenos Aires?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Boston to Buenos Aires?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Boston and Buenos Aires, with Star Alliance being the most commonly used for this route.

  • What is the most popular layover when flying to Buenos Aires from Boston?

    New York is the most popular layover city among KAYAK users traveling from Boston to Buenos Aires.

  • Which is the best airline for flights from Boston to Buenos Aires, Delta or LATAM Airlines?

    The two airlines most popular with KAYAK users for flights from Boston to Buenos Aires are Delta and LATAM Airlines. With an average price for the route of $1,169 and an overall rating of 7.9, Delta is the most popular choice. LATAM Airlines is also a great choice for the route, with an average price of $982 and an overall rating of 7.5.

  • How does KAYAK find such low prices on flights from Boston to Buenos Aires?

    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 Buenos Aires.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boston to Buenos Aires?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Buenos Aires from Boston 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 Buenos Aires?

    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 to Buenos Aires with an airline and back to Boston with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston to Buenos Aires?

    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 to Buenos Aires from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Boston to Buenos Aires

  • When traveling from Boston to Buenos Aires, you’ll depart from Boston Logan Airport (BOS) and land at Buenos Aires Ministro Pistarini Airport (EZE). Airlines to expect on the route include Copa Airlines, LATAM Airlines, Delta, United Airlines, American Airlines, and Avianca. Delta Airlines fly sustainably by actively implementing flight sustainability policies, leading to less carbon emissions.
  • Multiple airlines offer various flight options from Boston to Buenos Aires. To this end, expect to have at least one stopover. The common layover cities are Sao Paulo, Rio de Janeiro, Washington, D. C, Montreal, Toronto, New York, and Punta Cuna. Other flights will stop in Sacramento, Orlando, Miami, Mexico City, Panama, Zurich, and Istanbul.
  • Since EZE is a central hub for LATAM Airlines, consider reserving your flight with the airline to enjoy an unparalleled treat at the LATAM VIP Lounge. The lounge allows passengers flying with LATAM Airlines to relax and enjoy complimentary drinks, food, and entertainment.
  • Suppose you have an early morning flight; consider sleeping near the airport by booking a hotel, and gain the convenience of accessing the airport. Thatch Quarters on Broadway, HI Boston Hotel, Hilton Garden Inn Boston Logan Airport, Hampton Inn Boston-Logan Airport, and DoubleTree by Hilton Boston Bayside are worth sleeping in. Alternatively, check in at Boston Homestel and conveniently access BOS for your early flight.
  • After landing at EZE, you can visit several other top places, including cities. You can visit Burzaco, General Rodriguez, Merlo City, Rafael Castillo, Trujui, and Ensenada. The good news is that you have a wide range of airlines operating from the airport, including LATAM Airlines, Copa Airlines, Delta, and Avianca.

Reviews of the top 5 airlines serving from Boston to Buenos Aires

 
See real verified KAYAK customer reviews for airlines flying from Boston to Buenos Aires. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boston to Buenos Aires? 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 8179 reviews
7.9Comfort
7.2Food
8.1Boarding
8.5Crew
7.8Entertainment
Airline reviews

Was forced to check in my small carry on, even though I informed the crew it has very fragile items inside

2.0 MediocreJaspreet, Feb 2026
SEA - SMF
Read more Delta reviews

Was forced to check in my small carry on, even though I informed the crew it has very fragile items inside

This was one of the worst flights I’ve been on in years. I upgraded to comfort and had such an uncomfortable experience. The person next to me was oversized - which I understand - however, they took up their space and mine. I could only use about 50% of my seat space to not be physically touching this person the entire flight and there was no spatial awareness. I also could not use the seat outlet because their body was obstructing it. It was very inconvenient. Their body kept touching me repeatedly during the flight and I felt very uncomfortable. To pay more for an upgraded space and then not even being able to use it was highly disappointing.

No wheel chair as requested at Atlanta arrival on first flight.

Only freetext wifi was available in flight; browsing WiFi required payment. Since the seats had no in flight entertainment, Delta should revisit this policy on this longer flight.

Only water, tea or coffee served midflight, even to comfort seating. Man next to me needed two seats and took up a portion of my seat and Delta did nothing.

The flight was great as well as the airline staff

First class and monitors weren’t working for mine & my husbands. Eventually fixed, but quite annoyed as we bought first class. Also, No foot rests.

Prior to takeoff, the pilot told us there was a possibility of not being able to land and going to Portland. Well that happened, we took off and then did 8 loops around Spokane before the pilot told us we ran out of fuel and had to go to Portland. So for a 35 minute flight we have now been on the plane for 3 hours (boarded at 6:50 am and landed in Portland at 10:30). Then, we just sat in Portland's airport with no updates of when we can start heading back. All of a sudden, our pilots and crew just left, leaving us stranded in a different city and state. We continued to sit in Portland until we finally got a new crew assigned and boarded the plane (This was from 10:30-2). We then sat on the plane for an additional hour before take off because they had to count us multiple times. We finally landed in Spokane at 3:55 PM. So a flight that should have taken at max an hour took us 10 hours and we missed the majority of the recruiting event we went for.

It was delayed but other than that it was great.

Got on the plane and sat there for an hour before departure.

Good check in process Poor information on payments at Lima airport

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

Good flight, boarding ok and crew very nice. Flight was not full so I was able to be very comfortable. Blanket and pillow provided with was good as it was very cold during the flight . Food was very good(small snack sandwich and an excellent piece of orange cake). Overall good flight, no complaints.

I like this airline a lot no problems at all, except being forced to check a carry-on bag ., Overall very good airline

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 .

we were missing our luggage, trying to find someone to have any empathy was pretty much not happening....

Horrible. No TV or any type of entertainment on board. Passwnger listening to/watching stuff on their own phone with no headphones making it noise and uncomfortable for everyone else, little/tiny food portions, old seats, useless wifi (cant access anything). Horrible exlerience especially it was a lomg distance flight with kids.

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.

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.

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

We had a great flight just wished they had a tv so we can see a movie that would of made my trip excellent.

horrible service, food was an embarrassment, no charging for cellphones, stay away

Great experience with a crew always thinking in the passenger

Very happy with my flight. I would definitely recommend it.

Check-in and in-flight staff were better than average. The seat was a fair size but too hard and not enough padding. The cushion/pillow provided is poor (thin and seems to be disposable ,it provides no effective cushioning or support). Food was OK-ish but no choice of inflight snacks and no easy place to get drinks other than water (I could ask for juice by intruding into the staff area at the back of the plane) Entertainment was very good actually. Overall better than I expected from a US-based airline (sorry!) but compared to ANA or Singapore it was so-so. (I live in Japan so they are my comparative airlines)

Everything was on time Will use united again for sure

Plane outlets in my row not working to charge phone. Staff response was, well it should be. Plug into seed for volume not working well. Had to find the sweet spot for plug in or it would shut off and on.

Wifi took a while to kick in and we had a maintenance issue that took over 40 mins at the gate in Washington before pulling back

Fine not above and beyond as I had a connection that was delayed due to maintenance

The power at the seat didn't work and the seat itself was difficult to adjust - this was a business class seat. Flight attendant gave me miles to compensate. The attendant was very professional and on top of his game the entire flight.

Terrible. Our first time back on United for 10 years, the seats in Polaris class are small and uncomfortable. They have squished too many people in to get more $$$. The staff are not friendly and not wanting to accommodate. I asked for two salads rather than a main meal and was advised no we wont do that. Then asked what I would like for breakfast and given something else anyway. I will not be flying United International anytime soon.

Same thing as flight from Pheonix to Newark. Uograded and Promised extra leg room and when I got to the seat it had none.

I upgraded my seat and was promised it would be next to the emergency door for extra leg room and they said it was premium plus but it was at the back of the plane...same thing happened from Newark to Dubai

Everything except the food and entertainment. It was a great experience though

One day, I do so hope for a gluten free snack! Seems like with the rest of the world FINALLY figuring out what gluten free is, American Airlines would too. Fingers crossed!!

The flight was significantly delayed for 6.5 hours because of snow. There was no communication once the plane returned to the gate regarding when the flight would resume. Other flights were departing while our flight was being unloaded for reasons unknown. Our flight also seemed out of the queue regarding further deicing, refueling, and waiting to Taxi to the runway.

Flight was on time and the meal and service were good.

The accessible bathroom should be visible to people in Economy class.

Flight was delayed for 2 hours, then last minute the change to on time. The satélite location is far and a nightmare to get to.

This was a horrible experience. I’ve experienced several delays at this point and still not home. I was supposed to be home by 8:30 last night and here I sit at 7 am on a plane STILL unable to go home because of American Airlines.

Lexus in first class was absolutely amazing! Beat flight attendant i’ve ever seen.

Generally good. Flight left on time and the seats are comfortable. Plenty of space in front if you in you choose a comfort plus seat, completely worth spending the extra money given the amount of hours the flight lasts. The food tastes good but I would say it’s a the amount is too little. The crew was friendly and efficient. There was a some turbulence at different points into the flight. American Airlines has good deals to NZ if you book with plenty of time before you plan on going.

the plane was so hot!! the air-conditioning was barely blowing. The flight was delayed, and we had to sit on the hot plane before take off for an extended amount of time, waiting on international passengers. Would not have been so bad if it was not so hot. They said it would get better after take off, but it did not.

They are always late and seats was also not having working charger

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

Information on your arrival and departure airports