Cheap flights from Buenos Aires to Boston from $338

In general, January is the cheapest month to fly from Buenos Aires to Boston. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $957. If you aren’t able to travel during the month of January, then book flights to Boston from Buenos Aires during December instead. Flights to Boston in December, while not as cheap as those in January, still average around $971.

You are more likely to see cheaper flights to Boston from Buenos Aires when booking weeks ahead of your departure date. In general, you can expect to find flights to Boston for around $1,156 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Boston from Buenos Aires for as low as $1,014 on momondo.

You could potentially save up to 14% on your flight if you consider stops on a Buenos Aires to Boston flight.

As of February 2026, prices for Buenos Aires to Boston flights are approximately 1% cheaper when compared to flights at the same time last year.

Copa Airlines and Delta are the most popular carriers operating from Buenos Aires to Boston Logan Intl

American Airlines, Delta and Copa Airlines are the top three most popular airlines that fly to Boston from Buenos Aires according to our data. American Airlines is the first choice among our users, with 55% of people opting to fly with this airline when traveling to Boston. Keep in mind that there are 3 different airlines that fly to Boston on a routine basis, so you have a few additional options to choose from.

New York (JFK) was the most common stop: 37% of momondo users choosing 1-stop flights on this route connected there.

Flights via New York (JFK) offer the lowest average round-trip price of $927.

Flights connecting via Sao Paulo (GRU) have the shortest average one-way travel time: 14h 15m.

Sao Paulo (GRU) has the shortest average layover time for this route: 1h 20m.