Cheapest return flights from Jacksonville to San Juan in December from $258

AirHint found the following cheapest return flights from Jacksonville (JAX) to San Juan (SJU) in December 2025 (see full year).

Return flights

04 Dec - 07 Dec Frontier Airlines direct
07 Dec - 14 Dec Frontier Airlines direct
07 Dec - 10 Dec American Airlines
05 Dec - 08 Dec Frontier Airlines
16 Dec - 19 Dec American Airlines
24 Dec - 31 Dec Frontier Airlines direct
29 Dec - 05 Jan Frontier Airlines direct

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

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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