Cheap flights from Santiago to Buenos Aires
from 46 US$
From 128 USD — compare hundreds of airlines
The cheapest month is usually 2026-09 · 46 US$
See prices for my dates →Live fares from 100+ sites — free, with no hidden fees.
About this route
Compare flights from Santiago to Buenos Aires, a about 1,129 km route (around 1h 55m nonstop). We gather live prices from hundreds of airlines and agencies so you can find the cheapest and book on the official site, with no hidden fees. Direct flights are available. Airlines such as Air Canada, Aerolineas Argentinas, Sky Airline operate this route.
The airports on this route
About 20 km from downtown Santiago, in Pudahuel
Getting around: Official buses, shared transfers, authorized taxis and apps
About 30 km from central Buenos Aires
Getting around: Direct buses, remises, taxis and apps
The long-haul international gateway; allow 45–75 min to the center.
About 6 km from downtown, on the riverfront
Getting around: Taxis, apps, city buses and remises
Domestic and regional, right in the city: usually the convenient one within the Southern Cone.
When to buy and when to fly
Prices by date
Fares found by date — cheapest days in green.
How to get the best price
Airlines on this route
FAQ
What's the cheapest month to fly Santiago to Buenos Aires?
It's usually 2026-09, from 46 USD. Use the price calendar to compare other dates.
How long is the flight from Santiago to Buenos Aires?
A nonstop flight takes about 1h 55m and covers around 1,129 km. Connecting itineraries take longer.
Are there direct flights from Santiago to Buenos Aires?
Yes, this route has nonstop flights. Filter by "nonstop" to see them.
Which airlines fly from Santiago to Buenos Aires?
Air Canada, Aerolineas Argentinas, Sky Airline, LATAM Chile operate this route, among others. Compare them all in the results.
When should I book Santiago–Buenos Aires flights?
As a rule of thumb, booking 3–8 weeks ahead and avoiding weekends and holidays tends to give the best prices. Use the calendar to spot the cheapest dates.
Compare your dates in seconds
Santiago → Buenos Aires · Live fares from 100+ sites — free, with no hidden fees.