AirHint found the following cheapest return flights from San Jose (SJO) to Santiago (SCL) in August 2025 (see full year).

Return flights

20 Aug - 27 Aug	LATAM Airlines Group
15 Aug - 29 Aug	Avianca
21 Aug - 04 Sep	Avianca
23 Aug - 30 Aug	Avianca
15 Aug - 23 Aug	Avianca
19 Aug - 26 Aug	Avianca
19 Aug - 30 Aug	Avianca
13 Aug - 24 Aug	Avianca
11 Aug - 17 Aug	Avianca
11 Aug - 15 Aug	Avianca
08 Aug - 11 Aug	Avianca
26 Aug - 08 Sep	Avianca
30 Aug - 14 Sep	Copa

Also check the deals for one-way flights from San Jose 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 San Jose to Santiago in August from 312€

Return flights