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

Return flights

28 Aug - 08 Sep	Avianca
27 Aug - 02 Sep	Avianca
13 Aug - 20 Aug	Avianca
30 Aug - 13 Sep	Avianca
23 Aug - 31 Aug	Avianca
14 Aug - 17 Aug	Avianca
04 Aug - 15 Aug	Copa
16 Aug - 19 Aug	Avianca
15 Aug - 17 Aug	Sky Airline
31 Aug - 06 Sep	Copa
08 Aug - 18 Aug	Copa

Also check the deals for one-way flights from Santiago to San Juan 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 Santiago to San Juan in August from $420

Return flights