Open interactive map →Cheap flights from Santiago to Buenos Aires
Fares on the Santiago to Buenos Aires route vary noticeably by season and demand. Right now the lowest available price is €46. Non-stop flights are available, making it a convenient option if you want to skip layovers. Booking further in advance typically unlocks lower prices, especially around school holidays and peak travel months. The calendar below maps out the cheapest and most expensive months so you can plan before committing to dates.
Prices to Buenos Aires are typically lowest in the shoulder months shown in the calendar above. Searching for mid-week flights and avoiding school holiday windows can meaningfully cut costs on this route. If you're open on destination, use the interactive map from Santiago to compare Buenos Aires against nearby alternatives - you may find a cheaper fare to a similar destination.
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Cheapest month to fly
- October 2026€46DirectCheapest
Based on tracked fares, October is the cheapest month to fly this route at around €46.
Prices last updated: September 2026
Alternative routes
Other ways to reach Buenos Aires
Frequently asked questions
How much does a flight from Santiago to Buenos Aires cost?
The cheapest fare currently available from Santiago to Buenos Aires is €46. Prices on this route vary by season, day of week, and how far in advance you book. The month-by-month price calendar on this page shows exactly when fares are highest and lowest, so you can pick the most cost-effective window before searching for specific dates. Fares are refreshed regularly as our flight partners publish new availability.
Are there direct flights from Santiago to Buenos Aires?
Yes - non-stop flights are currently available from Santiago to Buenos Aires. The cheapest direct fare starts at €46, making it a convenient option if you want to avoid layover time. Direct flights are generally quicker and less stressful, especially for shorter trips to Argentina. Click through to the booking site to check live availability and schedules for your dates.
When is the cheapest time to fly from Santiago to Buenos Aires?
Prices on this route typically dip during shoulder-season months, away from school holidays and public holiday windows. Mid-week departures - particularly Tuesday to Thursday - tend to be cheaper than flights on Fridays and Sundays from Santiago. The month-by-month price calendar above is the fastest way to identify the cheapest window - look for the months with the lowest fares before committing to travel dates. Booking 3-6 weeks in advance generally offers the best balance of price and seat availability on this route.