Cheap flights from Santiago to Buenos Aires from $55

The cheapest month to fly to Buenos Aires from Santiago is in May. Flight prices, which tend to average around $157, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of May, then book flights to Buenos Aires from Santiago during June instead. Flights to Buenos Aires in June, while not as cheap as those in May, still average around $158.

On average, the least expensive day to fly to Buenos Aires from Santiago is on a Saturday. momondo users have found tickets for Saturday departures for as low as $182. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Tuesday as prices are generally higher than usual. According to our data, the average ticket price to Buenos Aires on Tuesday is $245.

Our most recent data shows that the best time of day to fly to Buenos Aires is in the evening. Flights from Santiago to Buenos Aires during this time can be as low as $178. Try not to purchase tickets in the morning because they tend to be around $222. Of course, these prices can vary depending on the time of year and what airport you fly to.

Fly from Santiago Arturo Merino Benitez to Buenos Aires Jorge Newbery for the best Santiago Arturo Merino Benitez - Buenos Aires flight prices

You are more likely to see cheaper flights to Buenos Aires from Santiago when booking weeks ahead of your departure date. In general, you can expect to find flights to Buenos Aires for around $223 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Buenos Aires from Santiago for as low as $173 on momondo.

There are 3 cabin classes available to choose from on Santiago Arturo Merino Benitez to Buenos Aires flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

No. A direct flight is the cheapest option for a flight between Santiago to Buenos Aires.

As of March 2026, prices for Santiago to Buenos Aires flights are approximately 2% more expensive when compared to flights at the same time last year.

JetSMART and KLM are the most popular carriers operating from Santiago Arturo Merino Benitez to Buenos Aires

Aerolineas Argentinas, JetSMART and LATAM Airlines are the top three most popular airlines that fly to Buenos Aires from Santiago according to our data. Aerolineas Argentinas is the first choice among our users, with 37% of people opting to fly with this airline when traveling to Buenos Aires. Keep in mind that there are 5 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 11% of flights between Santiago 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 in the early afternoon 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. Thursday has historically seen more delays on average compared to the rest of the week.

According to our data, Sky Airline 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.

15 flights are operational daily from Santiago to Buenos Aires as of March 2026. The most popular departure time for this route is 12:00PM, with 33% of flights per day taking off at noon.

The number of flights available between Santiago and Buenos Aires is 107 per week as of March 2026. The most frequent departure day is Fri, with 21% of weekly flights leaving on this day.