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

Return flights

19 Oct - 26 Oct	Avianca
08 Oct - 14 Oct	Avianca
29 Oct - 06 Nov	Copa
03 Oct - 12 Oct	Avianca
06 Oct - 12 Oct	Avianca
24 Oct - 07 Nov	Avianca
06 Oct - 16 Oct	Avianca
07 Oct - 16 Oct	Avianca
01 Oct - 06 Oct	Copa
20 Oct - 27 Oct	Avianca
01 Oct - 11 Oct	Avianca
25 Oct - 31 Oct	Avianca

Also check the deals for one-way flights from Santiago to San Juan in October.

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 October from $393

Return flights