Cheapest return flights from San Diego to San Juan in October from 249€

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

Return flights

21 Oct - 24 Oct Delta
19 Oct - 23 Oct United
30 Oct - 13 Nov Southwest Airlines
17 Oct - 23 Oct Frontier Airlines
22 Oct - 03 Nov Frontier Airlines
18 Oct - 24 Oct Frontier Airlines
23 Oct - 02 Nov Frontier Airlines
23 Oct - 03 Nov Frontier Airlines
23 Oct - 28 Oct Frontier Airlines
22 Oct - 27 Oct Frontier Airlines
23 Oct - 07 Nov Frontier Airlines
17 Oct - 21 Oct Frontier Airlines
24 Oct - 03 Nov Frontier Airlines
02 Oct - 06 Oct Frontier Airlines
21 Oct - 03 Nov United
07 Oct - 11 Oct Frontier Airlines
29 Oct - 02 Nov Frontier Airlines
16 Oct - 19 Oct Frontier Airlines

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

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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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