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

Return flights

07 Sep - 14 Sep	JetSmart
12 Sep - 25 Sep	JetSmart
18 Sep - 22 Sep	JetSmart
01 Sep - 11 Sep	JetSmart
06 Sep - 20 Sep	JetSmart
19 Sep - 25 Sep	JetSmart
15 Sep - 22 Sep	Flybondi
01 Sep - 08 Sep	Flybondi
11 Sep - 25 Sep	JetSmart
14 Sep - 02 Oct	JetSmart
26 Sep - 02 Oct	JetSmart
25 Sep - 02 Oct	JetSmart
28 Sep - 02 Oct	JetSmart
14 Sep - 27 Sep	JetSmart
18 Sep - 02 Oct	JetSmart
13 Sep - 02 Oct	JetSmart
15 Sep - 02 Oct	JetSmart
18 Sep - 03 Oct	JetSmart
28 Sep - 04 Oct	JetSmart
28 Sep - 18 Oct	JetSmart

Also check the deals for one-way flights from Buenos Aires 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.

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Cheapest return flights from Buenos Aires to Santiago in September from 115€

Return flights