Cheapest return flights from Jacksonville to San Juan in December from 163€

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
11 Dec - 14 Dec Frontier Airlines
04 Dec - 27 Dec Frontier Airlines direct
14 Dec - 21 Dec Frontier Airlines
19 Dec - 08 Jan Frontier Airlines direct
18 Dec - 21 Dec Frontier Airlines direct
14 Dec - 04 Jan Frontier Airlines
27 Dec - 30 Dec Frontier Airlines direct
25 Dec - 04 Jan Frontier Airlines direct
30 Dec - 04 Jan Frontier Airlines direct
29 Dec - 04 Jan Frontier Airlines direct
27 Dec - 03 Jan Frontier Airlines direct
28 Dec - 03 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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