AirHint found the following cheapest one-way flights from San Juan (SJU) to Fort Lauderdale (FLL) in December 2025 (see full year).

One-Way flights

12 Dec	Frontier Airlines	direct
05 Dec	Frontier Airlines	direct
21 Dec	Frontier Airlines	direct
19 Dec	Frontier Airlines	direct
15 Dec	Frontier Airlines	direct
20 Dec	Frontier Airlines	direct
22 Dec	Frontier Airlines	direct
08 Dec	Frontier Airlines	direct
23 Dec	Frontier Airlines	direct
17 Dec	Frontier Airlines

Also check the deals for return flights from San Juan to Fort Lauderdale in December.

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 one-way flights from San Juan to Fort Lauderdale in December from $53

One-Way flights