Cheapest return flights from San Diego to San Juan in September from 234€

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

Return flights

19 Sep - 26 Sep United
13 Sep - 19 Sep Delta
18 Sep - 22 Sep United
22 Sep - 26 Sep United
17 Sep - 22 Sep United
04 Sep - 10 Sep Southwest Airlines
11 Sep - 14 Sep Frontier Airlines
10 Sep - 16 Sep Alaska Airlines
05 Sep - 14 Sep Alaska Airlines
05 Sep - 15 Sep Alaska Airlines

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

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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