Cheap flights from Santiago to Buenos Aires

One-way fares from $745 · STI → BUE · prices found by travellers in the last 48 hours

Compare all dates Buenos Aires → Santiago
Cheapest fare
$745

jetBlue · Wed, Dec 16

Cheapest month
December

from $745

Direct flights
Not recently

Usually 1+ stop

Quickest trip
14h 07m

6,140 km

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Cheapest month to fly from Santiago to Buenos Aires

Lowest one-way fare per person in each month. Choose a month to see every date.

  1. December 2026 Cheapest $745

Cheapest dates in December 2026

The lowest fares we've seen for each day, cheapest first.

jetBlue
Depart06:01 Wed, Dec 16STI → EZE 14h 07m · 3 stops
$745one way, per person
View deal
See every date in December 2026 →

Plan the rest of your trip to Buenos Aires

Where to stay, what to do and getting around, from our travel partners.

Where to stay

Hotels in Buenos AiresCompare places to stay on Booking.com Find hotels →

Things to do

Things to do in Buenos AiresTours, attractions and day trips on Klook Explore →

Getting around

Airport transfer in Buenos AiresPre-book a driver to meet you at arrivals, with Kiwitaxi Book a transfer → Car hire in Buenos AiresCompare rental cars from major brands on EconomyBookings Compare cars →

Stay connected

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About flights from Santiago to Buenos Aires

Santiago (STI) and Buenos Aires (BUE) are about 6,140 km apart. We haven't seen direct fares on this route recently, so expect at least one stop; the quickest journey we've seen takes about 14h 07m. Over the next few months, one-way fares start from $745, and December 2026 is currently the cheapest month to fly.

These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.

Frequently asked questions

How much is a flight from Santiago to Buenos Aires?

The cheapest one-way fare we've seen recently is $745 with jetBlue, departing Wednesday, December 16, 2026.

What is the cheapest month to fly from Santiago to Buenos Aires?

December 2026 currently has the lowest fares, from $745 one way.

Are there direct flights from Santiago to Buenos Aires?

We haven't seen direct fares recently, so most journeys include at least one stop.

How long is the flight from Santiago to Buenos Aires?

The quickest journey we've seen takes about 14h 07m. Santiago and Buenos Aires are around 6,140 km apart.

Which airlines fly from Santiago to Buenos Aires?

Recent fares on this route were with jetBlue.

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