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

Return flights

06 Oct - 12 Oct	Avianca
06 Oct - 16 Oct	Avianca
17 Oct - 22 Oct	Avianca
08 Oct - 14 Oct	Avianca
29 Oct - 06 Nov	Avianca
20 Oct - 27 Oct	Avianca
01 Oct - 06 Oct	Copa
24 Oct - 07 Nov	Avianca
31 Oct - 03 Nov	Copa
01 Oct - 11 Oct	Avianca
25 Oct - 31 Oct	Copa
05 Oct - 11 Oct	Copa

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 340€

Return flights