Cheapest return flights from San Jose to San Juan in March from $367

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

Return flights

23 Mar - 31 Mar Frontier Airlines
24 Mar - 03 Apr American Airlines
23 Mar - 30 Mar Frontier Airlines
26 Mar - 31 Mar Frontier Airlines
23 Mar - 29 Mar Frontier Airlines
27 Mar - 04 Apr Frontier Airlines
23 Mar - 27 Mar Frontier Airlines
16 Mar - 20 Mar Southwest Airlines
25 Mar - 03 Apr Alaska Airlines
31 Mar - 07 Apr Alaska Airlines
20 Mar - 27 Mar Alaska Airlines
26 Mar - 02 Apr Alaska Airlines
28 Mar - 04 Apr Southwest Airlines
29 Mar - 03 Apr Alaska Airlines
18 Mar - 23 Mar Alaska Airlines
12 Mar - 16 Mar Alaska Airlines
26 Mar - 30 Mar Alaska Airlines
29 Mar - 05 Apr Alaska Airlines

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

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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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