AirHint found the following cheapest return flights from San Jose (SJC) to San Juan (SJU) in March 2026 (see full year).

Return flights

16 Mar - 20 Mar	American Airlines
25 Mar - 08 Apr	American Airlines
12 Mar - 18 Mar	Alaska Airlines
26 Mar - 02 Apr	Alaska Airlines
27 Mar - 02 Apr	Alaska Airlines
19 Mar - 26 Mar	Alaska Airlines
12 Mar - 15 Mar	Alaska Airlines
20 Mar - 26 Mar	Alaska Airlines
21 Mar - 28 Mar	American Airlines
11 Mar - 15 Mar	Alaska Airlines
27 Mar - 30 Mar	Alaska Airlines
11 Mar - 16 Mar	Alaska Airlines
12 Mar - 16 Mar	Alaska Airlines

Also check the deals for one-way flights from San Jose to San Juan in March.

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 March from $391

Return flights