AirHint found the following cheapest return flights from Mexico City (MEX) to Santiago (SCL) in August 2025 (see full year).

Return flights

20 Aug - 27 Aug	Avianca
19 Aug - 26 Aug	Avianca
19 Aug - 27 Aug	Avianca
21 Aug - 28 Aug	Avianca
28 Aug - 30 Sep	Avianca
28 Aug - 01 Sep	Avianca
25 Aug - 04 Sep	Avianca
28 Aug - 04 Sep	Avianca
29 Aug - 08 Sep	Avianca
31 Aug - 05 Sep	Arajet
26 Aug - 04 Sep	Avianca
29 Aug - 04 Sep	Avianca
31 Aug - 06 Sep	Arajet
28 Aug - 28 Sep	Copa
27 Aug - 29 Aug	Copa
29 Aug - 31 Aug	Copa
28 Aug - 31 Aug	Copa
25 Aug - 30 Aug	Copa
19 Aug - 31 Aug	Copa
21 Aug - 31 Aug	Copa

Also check the deals for one-way flights from Mexico City to Santiago in August.

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 Mexico City to Santiago in August from 440€

Return flights