Cheapest return flights from Charlotte to San Juan in December from $259

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

Return flights

06 Dec - 13 Dec Spirit Airlines
11 Dec - 16 Dec Spirit Airlines
29 Dec - 12 Jan Frontier Airlines
11 Dec - 15 Dec Frontier Airlines
05 Dec - 08 Dec Spirit Airlines
12 Dec - 21 Dec Frontier Airlines
07 Dec - 12 Dec Spirit Airlines
05 Dec - 07 Dec Frontier Airlines
07 Dec - 16 Dec Spirit Airlines
11 Dec - 12 Dec Spirit Airlines
05 Dec - 14 Dec Spirit Airlines
29 Dec - 05 Jan Frontier Airlines direct
29 Dec - 13 Jan Spirit Airlines
31 Dec - 05 Jan Frontier Airlines
29 Dec - 11 Jan Spirit Airlines
29 Dec - 06 Jan Spirit Airlines
24 Dec - 13 Jan Spirit Airlines
29 Dec - 08 Jan Spirit Airlines
21 Dec - 11 Jan Spirit Airlines
24 Dec - 11 Jan Spirit Airlines

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

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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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