AirHint found the following cheapest return flights from Miami (MIA) to Santiago (SCL) in September 2025 (see full year).

Return flights

13 Sep - 20 Sep	Avianca
26 Sep - 27 Oct	Avianca
27 Sep - 27 Oct	Avianca
04 Sep - 07 Sep	Avianca
10 Sep - 27 Sep	Avianca
01 Sep - 08 Sep	Avianca
03 Sep - 28 Sep	Avianca
03 Sep - 10 Sep	Avianca
11 Sep - 18 Sep	Avianca
14 Sep - 21 Sep	Avianca
01 Sep - 09 Sep	Avianca
02 Sep - 10 Sep	Avianca
30 Sep - 14 Oct	Copa
28 Sep - 06 Oct	Avianca
26 Sep - 04 Oct	Avianca
27 Sep - 04 Oct	Avianca
29 Sep - 07 Oct	Avianca
30 Sep - 07 Oct	Avianca
30 Sep - 08 Oct	Avianca
30 Sep - 23 Oct	Avianca

Also check the deals for one-way flights from Miami to Santiago in September.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in Santiago

Cheap car rent in Santiago

Cheapest return flights from Miami to Santiago in September from 304€

Return flights