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Cheap flights from Boston to Buenos Aires from $312

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 11/3. 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

Logo
6:16 am - 3:45 amBOS-EZE
20h 29m2 stops
Logo
2:40 am - 12:40 amEZE-BOS
24h 00m3 stops
$864
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Thu, Oct 23 - Tue, Nov 4
LATAM Airlines Logo
8:55 am - 1:00 amBOS-EZE
14h 05m1 stop
LATAM Airlines Logo
2:45 pm - 6:35 amEZE-BOS
41h 50m2 stops
$865LATAM Airlines
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Fri, Nov 14 - Mon, Nov 17
Logo
11:15 am - 3:25 amBOS-EZE
14h 10m1 stop
Logo
9:55 pm - 6:35 amEZE-BOS
34h 40m1 stop
$866
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Fri, Dec 26 - Sat, Jan 24
Air Canada Logo
5:30 am - 3:10 pmBOS-EZE
31h 40m3 stops
Air Canada Logo
4:45 pm - 9:27 pmEZE-BOS
29h 42m2 stops
$867Air Canada
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Sun, Feb 22 - Mon, Mar 16
Logo
5:45 am - 7:55 amBOS-AEP
24h 10m3 stops
Logo
12:05 am - 10:08 pmAEP-BOS
24h 03m3 stops
$868
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Wed, Nov 5 - Tue, Nov 11
Air Canada Logo
10:15 am - 3:10 pmBOS-EZE
26h 55m3 stops
Air Canada Logo
4:45 pm - 2:52 pmEZE-BOS
24h 07m3 stops
$874Air Canada
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Sun, Jan 18 - Wed, Feb 4
Logo
11:15 am - 3:25 amBOS-EZE
14h 10m1 stop
Logo
11:00 am - 11:29 pmEZE-BOS
14h 29m1 stop
$876
Find Deal
Fri, Dec 26 - Sun, Jan 18
LATAM Airlines Logo
7:50 pm - 9:35 amBOS-EZE
35h 45m1 stop
LATAM Airlines Logo
9:55 pm - 9:55 pmEZE-BOS
26h 00m2 stops
$877LATAM Airlines
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Sun, Feb 22 - Sat, Mar 7
LATAM Airlines Logo
8:59 pm - 5:11 pmBOS-EZE
19h 12m3 stops
LATAM Airlines Logo
6:40 am - 11:00 pmEZE-BOS
17h 20m2 stops
$879LATAM Airlines
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Wed, Oct 8 - Tue, Oct 14
Air Canada Logo
6:30 pm - 2:30 pmBOS-EZE
43h 00m3 stops
Air Canada Logo
4:45 pm - 7:12 pmEZE-BOS
27h 27m2 stops
$922Air Canada
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Mon, Oct 20 - Fri, Oct 31

Air Canada flights from Boston to Buenos Aires

Our best Air Canada deals on Boston to Buenos Aires flight tickets
Air Canada
Feb 22
BOS5:30 amBoston Logan Intl
31h 40m
3 stops
EZE3:10 pmBuenos Aires Ministro Pistarini
Mar 16
EZE4:45 pmBuenos Aires Ministro Pistarini
29h 42m
2 stops
BOS9:27 pmBoston Logan Intl
$867
Find similar
Air Canada
Jan 18
BOS10:15 amBoston Logan Intl
26h 55m
3 stops
EZE3:10 pmBuenos Aires Ministro Pistarini
Feb 4
EZE4:45 pmBuenos Aires Ministro Pistarini
24h 07m
3 stops
BOS2:52 pmBoston Logan Intl
$874
Find similar
Air Canada
Oct 20
BOS6:30 pmBoston Logan Intl
43h 00m
3 stops
EZE2:30 pmBuenos Aires Ministro Pistarini
Oct 31
EZE4:45 pmBuenos Aires Ministro Pistarini
27h 27m
2 stops
BOS7:12 pmBoston Logan Intl
$922
Find similar

LATAM Airlines flights from Boston to Buenos Aires

Our best LATAM Airlines deals on Boston to Buenos Aires flight tickets
LATAM Airlines
Nov 14
BOS8:55 amBoston Logan Intl
14h 05m
1 stop
EZE1:00 amBuenos Aires Ministro Pistarini
Nov 17
EZE2:45 pmBuenos Aires Ministro Pistarini
41h 50m
2 stops
BOS6:35 amBoston Logan Intl
$865
Find similar
LATAM Airlines
Feb 22
BOS7:50 pmBoston Logan Intl
35h 45m
1 stop
EZE9:35 amBuenos Aires Ministro Pistarini
Mar 7
EZE9:55 pmBuenos Aires Ministro Pistarini
26h 00m
2 stops
BOS9:55 pmBoston Logan Intl
$877
Find similar
LATAM Airlines
Oct 8
BOS8:59 pmBoston Logan Intl
19h 12m
3 stops
EZE5:11 pmBuenos Aires Ministro Pistarini
Oct 14
EZE6:40 amBuenos Aires Ministro Pistarini
17h 20m
2 stops
BOS11:00 pmBoston Logan Intl
$879
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 September 11, 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 - EZE

BOSEZE

Boston Logan Intl

Thu 10/23

6:16 am-3:45 am

2 stops20h 29m

Buenos Aires Ministro Pistarini

Tue 11/4

2:40 am-12:40 am

3 stops24h 00m

$864

BostonBuenos Aires

BOS - EZE

BOSEZE

Boston Logan Intl

Fri 11/14

8:55 am-1:00 am

1 stop14h 05m

Buenos Aires Ministro Pistarini

Mon 11/17

2:45 pm-6:35 am

2 stops41h 50m

$865

BostonBuenos Aires

BOS - EZE

BOSEZE

Boston Logan Intl

Fri 12/26

11:15 am-3:25 am

1 stop14h 10m

Buenos Aires Ministro Pistarini

Sat 1/24

9:55 pm-6:35 am

1 stop34h 40m

$866

BostonBuenos Aires

BOS - EZE

BOSEZE

Boston Logan Intl

Sun 2/22

5:30 am-3:10 pm

3 stops31h 40m

Buenos Aires Ministro Pistarini

Mon 3/16

4:45 pm-9:27 pm

2 stops29h 42m

$867

BostonBuenos Aires

BOS - AEP

BOSAEP

Boston Logan Intl

Wed 11/5

5:45 am-7:55 am

3 stops24h 10m

Buenos Aires Jorge Newbery

Tue 11/11

12:05 am-10:08 pm

3 stops24h 03m

$868

BostonBuenos Aires

BOS - EZE

BOSEZE

Boston Logan Intl

Sun 1/18

10:15 am-3:10 pm

3 stops26h 55m

Buenos Aires Ministro Pistarini

Wed 2/4

4:45 pm-2:52 pm

3 stops24h 07m

$874

BostonBuenos Aires

BOS - EZE

BOSEZE

Boston Logan Intl

Fri 12/26

11:15 am-3:25 am

1 stop14h 10m

Buenos Aires Ministro Pistarini

Sun 1/18

11:00 am-11:29 pm

1 stop14h 29m

$876

BostonBuenos Aires

BOS - EZE

BOSEZE

Boston Logan Intl

Sun 2/22

7:50 pm-9:35 am

1 stop35h 45m

Buenos Aires Ministro Pistarini

Sat 3/7

9:55 pm-9:55 pm

2 stops26h 00m

$877

BostonBuenos Aires

BOS - EZE

BOSEZE

Boston Logan Intl

Wed 10/8

8:59 pm-5:11 pm

3 stops19h 12m

Buenos Aires Ministro Pistarini

Tue 10/14

6:40 am-11:00 pm

2 stops17h 20m

$879

BostonBuenos Aires

BOS - EZE

BOSEZE

Boston Logan Intl

Mon 10/20

6:30 pm-2:30 pm

3 stops43h 00m

Buenos Aires Ministro Pistarini

Fri 10/31

4:45 pm-7:12 pm

2 stops27h 27m

$922

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 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 $1,250 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 $963 on momondo.

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

You could potentially save up to 31% 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 September 2025, prices for Boston to Buenos Aires flights are approximately 28% 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

Direct flights

None
There are no direct flights from Boston to Buenos Aires. There are no popular flight routes from Boston to Buenos Aires.
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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 14h 05m.

  • 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 $517Free CancellationRating
7.5
1,847 reviews
Search LATAM Airlines flights
AviancaPriceFrom $603Free CancellationRating
6.7
2,436 reviews
Search Avianca flights
Copa AirlinesPriceFrom $786Free CancellationRating
7.6
1,531 reviews
Search Copa Airlines flights
American AirlinesPriceFrom $1,004Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $1,040Free CancellationRating
7.9
7,960 reviews
Search Delta flights
United AirlinesPriceFrom $1,090Free CancellationRating
7.4
8,937 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.

An easier way to manage your Buenos Aires trip

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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