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

Return flights

18 Aug - 23 Aug	Avianca
22 Aug - 29 Aug	Avianca
19 Aug - 23 Aug	Avianca
20 Aug - 27 Aug	Avianca
25 Aug - 29 Sep	Avianca
29 Aug - 05 Sep	Avianca
21 Aug - 25 Aug	Avianca
20 Aug - 18 Sep	Avianca
16 Aug - 28 Aug	Copa
31 Aug - 07 Sep	Avianca
22 Aug - 11 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 320€

Return flights