Cheapest return flights from San Diego to San Juan in October from $295

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

Return flights

22 Oct - 29 Oct American Airlines
22 Oct - 27 Oct American Airlines
17 Oct - 23 Oct Frontier Airlines
01 Oct - 15 Oct Spirit Airlines
15 Oct - 21 Oct Frontier Airlines
16 Oct - 21 Oct Frontier Airlines
23 Oct - 07 Nov Frontier Airlines
15 Oct - 19 Oct Frontier Airlines
13 Oct - 17 Oct Frontier Airlines
29 Oct - 02 Nov Alaska Airlines
02 Oct - 04 Oct Spirit Airlines
29 Oct - 03 Nov United
07 Oct - 11 Oct Frontier Airlines

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

Skyscanner

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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