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

One-Way flights

25 Aug	Frontier Airlines	direct
10 Aug	Frontier Airlines	direct
09 Aug	Spirit Airlines
22 Aug	Spirit Airlines
30 Aug	Spirit Airlines
16 Aug	Spirit Airlines
23 Aug	Spirit Airlines
12 Aug	Spirit Airlines
26 Aug	Spirit Airlines
24 Aug	Spirit Airlines	direct

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

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 Fort Lauderdale to San Juan in August from 52€

One-Way flights