Cheapest return JAX–SJU flights, May

AirHint found the following cheapest return flights from Jacksonville (JAX) to San Juan (SJU) in May 2026 (see full year).

Return flights

08 May - 10 May Frontier Airlines direct
10 May - 13 May Frontier Airlines direct
10 May - 14 May Frontier Airlines direct
20 May - 31 May Frontier Airlines direct
08 May - 11 May Frontier Airlines direct
15 May - 17 May Frontier Airlines
07 May - 10 May Frontier Airlines direct
20 May - 24 May Frontier Airlines direct
11 May - 18 May Frontier Airlines
09 May - 12 May Frontier Airlines direct
29 May - 01 Jun Frontier Airlines

Also check the deals for one-way flights from Jacksonville to San Juan in May.

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