Cheap flights from Miami to Buenos Aires from $274

The cheapest month to fly to Buenos Aires from Miami is in September. Flight prices, which tend to average around $750, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of September, then book flights to Buenos Aires from Miami during October instead. Flights to Buenos Aires in October, while not as cheap as those in September, still average around $750.

On average, the least expensive day to fly to Buenos Aires from Miami is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $874. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Buenos Aires on Sunday is $983.

Our most recent data shows that the best time of day to fly to Buenos Aires is in the morning. Flights from Miami to Buenos Aires during this time can be as low as $871. Try not to purchase tickets in the evening because they tend to be around $969. Of course, these prices can vary depending on the time of year and what airport you fly to.

Fly from Miami to Buenos Aires Ministro Pistarini for the best Miami - Buenos Aires flight prices

You are more likely to see cheaper flights to Buenos Aires from Miami when booking weeks ahead of your departure date. In general, you can expect to find flights to Buenos Aires for around $877 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Buenos Aires from Miami for as low as $850 on momondo.

There are 4 cabin classes available to choose from on Miami to Buenos Aires flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 7% on your flight if you consider stops on a Miami to Buenos Aires flight.

As of February 2026, prices for Miami to Buenos Aires flights are approximately 13% cheaper when compared to flights at the same time last year.

Arajet is the most popular carrier operating from Miami to Buenos Aires

Aerolineas Argentinas, American Airlines and LATAM Airlines are the top three most popular airlines that fly to Buenos Aires from Miami according to our data. Aerolineas Argentinas is the first choice among our users, with 62% of people opting to fly with this airline when traveling to Buenos Aires. Keep in mind that there are 9 different airlines that fly to Buenos Aires on a routine basis, so you have a few additional options to choose from.

Historically, on average around 27% of flights between Miami and Buenos Aires have experienced a delay on any given week. The average delay length over the past 12 months has been 165 minutes.

Generally, flights departing at night tend to experience fewer delays. Flights in the morning have, in the past, seen delays more frequently in comparison.

Saturday is statistically the day of the week which experiences the fewest number of delays on this flight route. Monday has historically seen more delays on average compared to the rest of the week.

According to our data, LATAM Airlines have had the least number of delays on this route over the last 12 months; with about 8% of their flights experiencing any sort of delay.

Panama City (PTY) was the most common stop: 42% of momondo users choosing 1-stop flights on this route connected there.

Flights via Medellín (MDE) offer the lowest average round-trip price of $688.

Flights connecting via Lima (LIM) have the shortest average one-way travel time: 11h 43m.

Lima (LIM) has the shortest average layover time for this route: 1h 33m.

As of February 2026, 10 flights take off from Miami and land in Buenos Aires each day. The most common flight departure time for this route is 8:00AM, with 41% of daily flights taking off in the evening.

As of February 2026, 73 flights take off from Miami and land in Buenos Aires each week. The most common flight departure day for this route is Mon, with 21% of weekly flights taking off on this day.