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Cheap flights from Boston to Buenos Aires from $319

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 Buenos Aires departing on 10/20. 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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Find the cheapest flights from Boston to Buenos Aires

Cheap round-trip flights

LATAM Airlines Logo
4:25 pm - 4:05 pmBOS-AEP
22h 40m2 stops
LATAM Airlines Logo
3:40 pm - 10:32 amAEP-BOS
19h 52m2 stops
$710LATAM Airlines
Find Deal
mié., oct. 8 - mar., oct. 14
LATAM Airlines Logo
6:00 am - 6:10 amBOS-EZE
23h 10m2 stops
LATAM Airlines Logo
12:48 pm - 2:39 pmEZE-BOS
26h 51m2 stops
$710LATAM Airlines
Find Deal
dom., oct. 19 - jue., oct. 23
Logo
11:15 am - 3:25 amBOS-EZE
14h 10m1 stop
Logo
7:10 am - 6:35 amEZE-BOS
25h 25m1 stop
$783
Find Deal
vie., dic. 12 - mié., dic. 17
Logo
4:50 pm - 4:40 amBOS-AEP
34h 50m3 stops
Logo
10:55 am - 1:23 pmAEP-BOS
27h 28m3 stops
$816
Find Deal
mié., ago. 27 - mié., sep. 3
Copa Airlines Logo
8:44 am - 12:55 amBOS-EZE
15h 11m1 stop
Copa Airlines Logo
3:48 am - 7:22 pmEZE-BOS
16h 34m1 stop
$894Copa Airlines
Find Deal
mar., ago. 26 - lun., sep. 1
Air Canada Logo
3:40 pm - 3:10 pmBOS-EZE
22h 30m2 stops
Air Canada Logo
4:45 pm - 2:52 pmEZE-BOS
24h 07m2 stops
$896Air Canada
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jue., oct. 30 - dom., nov. 9
Air Canada Logo
3:40 pm - 3:10 pmBOS-EZE
21h 30m2 stops
Air Canada Logo
4:45 pm - 7:12 pmEZE-BOS
28h 27m3 stops
$907Air Canada
Find Deal
jue., nov. 13 - lun., nov. 17
Delta Logo
9:55 am - 12:50 amBOS-EZE
13h 55m1 stop
Delta Logo
8:10 pm - 4:53 pmEZE-BOS
21h 43m1 stop
$921Delta
Find Deal
lun., ago. 18 - mar., ago. 26
Delta Logo
10:10 am - 9:45 amBOS-EZE
22h 35m1 stop
Delta Logo
7:40 am - 1:23 amEZE-BOS
18h 43m2 stops
$925Delta
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mar., ago. 19 - jue., ago. 28
Copa Airlines Logo
8:41 am - 3:50 amBOS-EZE
18h 09m1 stop
Copa Airlines Logo
2:32 pm - 2:13 pmEZE-BOS
24h 41m1 stop
$933Copa Airlines
Find Deal
mié., oct. 15 - dom., oct. 26

LATAM Airlines flights from Boston to Buenos Aires

Our best LATAM Airlines deals on Boston to Buenos Aires flight tickets
LATAM Airlines
Oct 19
BOS6:00 amBoston Logan Intl
23h 10m
2 stops
EZE6:10 amBuenos Aires Ministro Pistarini
Oct 23
EZE12:48 pmBuenos Aires Ministro Pistarini
26h 51m
2 stops
BOS2:39 pmBoston Logan Intl
$710
Find similar
LATAM Airlines
Oct 6
BOS9:55 amBoston Logan Intl
13h 55m
1 stop
EZE12:50 amBuenos Aires Ministro Pistarini
Oct 11
EZE5:35 amBuenos Aires Ministro Pistarini
27h 00m
2 stops
BOS7:35 amBoston Logan Intl
$733
Find similar
LATAM Airlines
Oct 6
BOS1:15 pmBoston Logan Intl
19h 25m
2 stops
AEP9:40 amBuenos Aires Jorge Newbery
Oct 11
AEP2:55 pmBuenos Aires Jorge Newbery
17h 40m
1 stop
BOS7:35 amBoston Logan Intl
$737
Find similar

United Airlines flights from Boston to Buenos Aires

Our best United Airlines deals on Boston to Buenos Aires flight tickets
United Airlines
Aug 7
BOS5:25 amBoston Logan Intl
25h 35m
1 stop
EZE8:00 amBuenos Aires Ministro Pistarini
Sep 23
EZE9:00 pmBuenos Aires Ministro Pistarini
18h 41m
1 stop
BOS2:41 pmBoston Logan Intl
$1,110
Find similar
United Airlines
Aug 7
BOS5:25 amBoston Logan Intl
25h 35m
1 stop
EZE8:00 amBuenos Aires Ministro Pistarini
Sep 23
EZE9:00 pmBuenos Aires Ministro Pistarini
20h 28m
2 stops
BOS4:28 pmBoston Logan Intl
$1,285
Find similar
United Airlines
Aug 6
BOS7:45 amBoston Logan Intl
23h 15m
1 stop
EZE8:00 amBuenos Aires Ministro Pistarini
Aug 14
EZE9:00 pmBuenos Aires Ministro Pistarini
26h 00m
1 stop
BOS10:00 pmBoston Logan Intl
$1,430
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated julio 30, 2025.
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

BostonBuenos Aires

BOS - AEP

BOSAEP

Boston Logan Intl

mié. 10/8

4:25 pm-4:05 pm

2 stops22h 40m

Buenos Aires Jorge Newbery

mar. 10/14

3:40 pm-10:32 am

2 stops19h 52m

$710

BostonBuenos Aires

BOS - EZE

BOSEZE

Boston Logan Intl

dom. 10/19

6:00 am-6:10 am

2 stops23h 10m

Buenos Aires Ministro Pistarini

jue. 10/23

12:48 pm-2:39 pm

2 stops26h 51m

$710

BostonBuenos Aires

BOS - EZE

BOSEZE

Boston Logan Intl

vie. 12/12

11:15 am-3:25 am

1 stop14h 10m

Buenos Aires Ministro Pistarini

mié. 12/17

7:10 am-6:35 am

1 stop25h 25m

$783

BostonBuenos Aires

BOS - AEP

BOSAEP

Boston Logan Intl

mié. 8/27

4:50 pm-4:40 am

3 stops34h 50m

Buenos Aires Jorge Newbery

mié. 9/3

10:55 am-1:23 pm

3 stops27h 28m

$816

BostonBuenos Aires

BOS - EZE

BOSEZE

Boston Logan Intl

mar. 8/26

8:44 am-12:55 am

1 stop15h 11m

Buenos Aires Ministro Pistarini

lun. 9/1

3:48 am-7:22 pm

1 stop16h 34m

$894

BostonBuenos Aires

BOS - EZE

BOSEZE

Boston Logan Intl

jue. 10/30

3:40 pm-3:10 pm

2 stops22h 30m

Buenos Aires Ministro Pistarini

dom. 11/9

4:45 pm-2:52 pm

2 stops24h 07m

$896

BostonBuenos Aires

BOS - EZE

BOSEZE

Boston Logan Intl

jue. 11/13

3:40 pm-3:10 pm

2 stops21h 30m

Buenos Aires Ministro Pistarini

lun. 11/17

4:45 pm-7:12 pm

3 stops28h 27m

$907

BostonBuenos Aires

BOS - EZE

BOSEZE

Boston Logan Intl

lun. 8/18

9:55 am-12:50 am

1 stop13h 55m

Buenos Aires Ministro Pistarini

mar. 8/26

8:10 pm-4:53 pm

1 stop21h 43m

$921

BostonBuenos Aires

BOS - EZE

BOSEZE

Boston Logan Intl

mar. 8/19

10:10 am-9:45 am

1 stop22h 35m

Buenos Aires Ministro Pistarini

jue. 8/28

7:40 am-1:23 am

2 stops18h 43m

$925

BostonBuenos Aires

BOS - EZE

BOSEZE

Boston Logan Intl

mié. 10/15

8:41 am-3:50 am

1 stop18h 09m

Buenos Aires Ministro Pistarini

dom. 10/26

2:32 pm-2:13 pm

1 stop24h 41m

$933

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Buenos Aires from

How to get the cheapest flight ticket from Boston to Buenos Aires

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 typical price of a round-trip flight between Boston and Buenos Aires?

What is the cheapest month to fly to Buenos Aires?

The cheapest month to fly to Buenos Aires from Boston is in October. Flight prices, which tend to average around $1,080, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of October, then book flights to Buenos Aires from Boston during November instead. Flights to Buenos Aires in November, while not as cheap as those in October, still average around $1,113.

What is the cheapest day to depart on your flight to Buenos Aires?

On average, the least expensive day to fly to Buenos Aires from Boston is on a Monday. momondo users have found tickets for Monday departures for as low as $1,088. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to Buenos Aires on Friday is $1,303.

What is the cheapest time of day to depart on your flight to Buenos Aires?

Our most recent data shows that the best time of day to fly to Buenos Aires is in the morning. Flights from Boston to Buenos Aires during this time can be as low as $1,079. Try not to purchase tickets at noon because they tend to be around $1,280. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

You are more likely to see cheaper flights to Buenos Aires from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to Buenos Aires for around $1,227 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Buenos Aires from Boston for as low as $952 on momondo.

Can stopping save me money on Boston to Buenos Aires flights?

You could potentially save up to 36% on your flight if you consider stops on a Boston to Buenos Aires flight.

How have Boston to Buenos Aires flight prices changed over time?

As of July 2025, prices for Boston to Buenos Aires flights are approximately 18% more expensive when compared to flights at the same time last year.

When to book flights from Boston to Buenos Aires

Are you open to changing your travel dates? Check out the ideal times to fly from Boston to Buenos Aires according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Boston to Buenos Aires (BOS to BUE) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Buenos Aires

Best Price Found

$319

Fastest flight time

13h 50m

Direct flights

None

Airports in Buenos Aires

2 airports
The best one-way flight to Buenos Aires from Boston in the past 72 hours is $319. The best round-trip flight deal from Boston to Buenos Aires found on momondo in the last 72 hours is $710.
The fastest flight from Boston to Buenos Aires takes 13h 50m
There are no direct flights from Boston to Buenos Aires. Popular non-direct routes for this connection are Boston Logan Intl Airport - Buenos Aires Jorge Newbery Airport and Boston Logan Intl Airport - Buenos Aires Ministro Pistarini Airport.
There are 2 airports near Buenos Aires: Buenos Aires Ministro Pistarini (EZE), Buenos Aires Jorge Newbery (AEP)
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  • How far is Boston Logan Intl to Buenos Aires by plane?

    Buenos Aires is 5374.8 mi away from Boston Logan Intl. A reasonable flight in good conditions will take 13h 50m.

  • When did momondo last update prices for flights from Boston Logan Intl Airport to Buenos Aires?

    Prices for flights from Boston Logan Intl Airport to Buenos Aires refresh daily.

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

  • How old do you have to be to fly from Boston Logan Intl Airport to Buenos Aires?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Boston Logan Intl Airport to Buenos Aires.

  • What documentation or ID do you need to fly to Buenos Aires?

    The travel and health documents required for your trip to Buenos Aires can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Buenos Aires. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Boston to Buenos Aires?

Best airlines flying from Boston to Buenos Aires

Compare and see reviews for airlines that fly from Boston to Buenos Aires with momondo
Airline
Rating
Free Cancellation
Price
LATAM AirlinesPriceFrom $528Free CancellationRating
7.5
1,822 reviews
Search LATAM Airlines flights
AviancaPriceFrom $603Free CancellationRating
6.7
2,387 reviews
Search Avianca flights
Copa AirlinesPriceFrom $649Free CancellationRating
7.5
1,493 reviews
Search Copa Airlines flights
American AirlinesPriceFrom $996Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $1,040Free CancellationRating
8.0
7,980 reviews
Search Delta flights
United AirlinesPriceFrom $1,090Free CancellationRating
7.4
8,896 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Boston to Buenos Aires?

It is quick and easy to find Boston to Buenos Aires flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Buenos Aires that suits you.

Can I find flights from Boston to Buenos Aires with flexible booking policies on momondo?

momondo does allow users to show only those flights to Buenos Aires from Boston which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Boston to Buenos Aires?

momondo helps you find the best flight between Boston and Buenos Aires by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Price alerts on flights to Buenos Aires from Boston are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Find better results for your trip to Argentina

Fly into one of these airports located in Buenos Aires

Airports listed have a maximum distance of 17.0 mi from Buenos Aires
Buenos Aires Jorge Newbery Airport
Buenos Aires Ministro Pistarini Airport