Cheap flights from Sao Paulo to Buenos Aires from $119

The cheapest month to fly to Buenos Aires from Sao Paulo is in March. Flight prices, which tend to average around $259, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of March, then book flights to Buenos Aires from Sao Paulo during May instead. Flights to Buenos Aires in May, while not as cheap as those in March, still average around $273.

On average, the least expensive day to fly to Buenos Aires from Sao Paulo is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $336. 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 $386.

Our most recent data shows that the best time of day to fly to Buenos Aires is in the afternoon. Flights from Sao Paulo to Buenos Aires during this time can be as low as $333. Try not to purchase tickets in the morning because they tend to be around $362. Of course, these prices can vary depending on the time of year and what airport you fly to.

Fly from Sao Paulo Guarulhos Intl to Buenos Aires Ministro Pistarini for the best Sao Paulo - Buenos Aires flight prices

You are more likely to see cheaper flights to Buenos Aires from Sao Paulo when booking weeks ahead of your departure date. In general, you can expect to find flights to Buenos Aires for around $309 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Buenos Aires from Sao Paulo for as low as $269 on momondo.

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

LATAM Airlines and GOL are the most popular carriers operating from Sao Paulo to Buenos Aires

Aerolineas Argentinas, Ethiopian Air and GOL are the top three most popular airlines that fly to Buenos Aires from Sao Paulo according to our data. Aerolineas Argentinas is the first choice among our users, with 36% of people opting to fly with this airline when traveling to Buenos Aires. Keep in mind that there are 4 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 21% of flights between Sao Paulo and Buenos Aires have experienced a delay on any given week. The average delay length over the past 12 months has been 112 minutes.

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

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

According to our data, GOL have had the least number of delays on this route over the last 12 months; with about 14% of their flights experiencing any sort of delay.

As of October 2026, 17 flights take off from Sao Paulo and land in Buenos Aires each day. The most common flight departure time for this route is 7:00AM, with 51% of daily flights taking off at noon.

As of October 2026, 125 flights take off from Sao Paulo and land in Buenos Aires each week. The most common flight departure day for this route is Thu, with 44% of weekly flights taking off on this day.