Cheap flights from Santiago to Buenos Aires from C$ 90

The cheapest month to fly to Buenos Aires from Santiago is in May. Flight prices, which tend to average around C$ 236, are often lower during this time because this is during the off-season. If you’re not able to fly to Buenos Aires in May, then March is your next best option. Flight prices from Santiago to Buenos Aires during March average around C$ 236.

The cheapest day to depart on your flight to Buenos Aires is on a Tuesday when prices can be found for as low as C$ 276. This is often the case because there is less demand to fly during this day of the week. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Santiago to Buenos Aires for around C$ 340.

According to our data, the cheapest time of day to fly to Buenos Aires is in the evening. momondo users have found flights departing from Santiago to Buenos Aires in the evening for as low as C$ 289. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights at noon are often more expensive with an average ticket price of C$ 325.

Fly from Santiago Arturo Merino Benitez to Buenos Aires Ministro Pistarini 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 C$ 327 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 C$ 284 on momondo.

There are 2 cabin classes available to choose from on Santiago to Buenos Aires flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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 111 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the early afternoon 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 has had the least delays on this route over the last 12 months, with about 6% of their flights experiencing any sort of delay.

13 flights are operational daily from Santiago to Buenos Aires as of October 2026. The most popular departure time for this route is 10:00a.m., with 45% of flights per day taking off at noon.

As of October 2026, 92 flights take off from Santiago and land in Buenos Aires each week. The most common flight departure day for this route is Thu, with 24% of weekly flights taking off on this day.