Cheap flights from Santiago de Chile to Buenos Aires in September 2026
September 2026 sits below the usual range on this route. A few weeks still open below the route norm.
Lowest fare
€195
Typical fare
€233
Current signal
Below typical by 16%
High fare
€241
Destination view
September 2026 fares to Buenos Aires from Santiago de Chile.
Week by week
Which week looks strongest in September 2026?
Start with the strongest week, then compare the live fares below. This keeps the page focused on one question: when does this route usually open best inside September 2026?
Live fares now
Bookable fares for September 2026
Open a live fare first if you are ready to book. These cards keep the month page tied to real inventory, not filler copy.
Search intent answers
Quick answers for September 2026
Is September 2026 a good time to fly from Santiago de Chile to Buenos Aires?
Yes. Current fares in September 2026 are running 16% below the usual range on this route.
Which week looks cheapest in September 2026?
The month is still filling in, so no single week is clearly ahead yet.
Are direct flights available on this route in September 2026?
Yes. We currently see 8 direct fares in this month window.
Fresh price radar
Fare Drop to Buenos Aires
Current fare from Chile to Buenos Aires is 119 EUR. This is 21% below the typical fare of 151 EUR.
Updated 101d ago