Cheap flights from Santiago to Buenos Aires from $78

The cheapest month to fly to Buenos Aires from Santiago is in May. Flight prices, which tend to average around $242, are often lower during this time because this is during the off-season. If you don’t want to visit Buenos Aires in May, then you should wait until March to fly from Santiago, when ticket prices are also cheap, with an average price of $244.

Our data shows that Saturday is the least expensive day to fly to Buenos Aires. Tickets to fly out on this day can be as low as $58. Flights from Santiago to Buenos Aires on a Monday will generally be more expensive and average around $502. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Our data shows that the cheapest Santiago to Buenos Aires flights are usually those with departure times at midday. Our users have found flights to Buenos Aires at midday for as low as $269. Flights in the evening are often more expensive, with an average ticket price of $408.

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 $318 when searching weeks before you fly. 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 $259 on momondo.

You could potentially save up to 15% on your flight if you consider stops on a Santiago to Buenos Aires flight.

As of May 2026, prices for Santiago to Buenos Aires flights are approximately 14% more expensive when compared to flights at the same time last year.

Historically, on average around 10% 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 113 minutes.

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

Tuesday is statistically the day of the week that experiences the fewest 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 fewest delays on this route over the last 12 months, with about 7% of their flights experiencing any sort of delay.

The number of flights available between Santiago and Buenos Aires is 15 per day as of May 2026. The most frequent departure time is 08:00, with 45% of daily flights leaving at midday.

The number of flights available between Santiago and Buenos Aires is 111 per week as of May 2026. The most frequent departure day is Fri, with 19% of weekly flights leaving on this day.