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

Return flights

16 Oct - 19 Oct	Copa
17 Oct - 20 Oct	Copa
10 Oct - 12 Oct	Copa
05 Oct - 12 Oct	Copa
06 Oct - 13 Oct	Copa
13 Oct - 19 Oct	Spirit Airlines
13 Oct - 20 Oct	Spirit Airlines
14 Oct - 19 Oct	Spirit Airlines
14 Oct - 20 Oct	Spirit Airlines
16 Oct - 20 Oct	Spirit Airlines
26 Oct - 10 Nov	Spirit Airlines
26 Oct - 07 Nov	Spirit Airlines
26 Oct - 08 Nov	Spirit Airlines
26 Oct - 11 Nov	Spirit Airlines
27 Oct - 10 Nov	Spirit Airlines
27 Oct - 07 Nov	Spirit Airlines
27 Oct - 08 Nov	Spirit Airlines
27 Oct - 11 Nov	Spirit Airlines
20 Oct - 10 Nov	Spirit Airlines
20 Oct - 07 Nov	Spirit Airlines

Also check the deals for one-way flights from San Jose 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 San Jose to San Juan in October from $216

Return flights