Cheapest return flights from Atlanta to San Juan in December from $119

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

Return flights

10 Dec - 18 Dec Frontier Airlines direct
17 Dec - 21 Dec Frontier Airlines
17 Dec - 19 Dec Frontier Airlines
15 Dec - 18 Dec Spirit Airlines
13 Dec - 20 Dec Spirit Airlines
15 Dec - 19 Dec Spirit Airlines
15 Dec - 22 Dec Spirit Airlines
11 Dec - 18 Dec Frontier Airlines
13 Dec - 19 Dec Frontier Airlines
10 Dec - 12 Dec Frontier Airlines direct
31 Dec - 15 Jan Spirit Airlines
30 Dec - 28 Jan Frontier Airlines
29 Dec - 15 Jan Spirit Airlines
30 Dec - 15 Jan Spirit Airlines
29 Dec - 07 Jan Frontier Airlines
30 Dec - 07 Jan Spirit Airlines
22 Dec - 15 Jan Spirit Airlines
30 Dec - 08 Jan Frontier Airlines
23 Dec - 10 Jan Spirit Airlines
31 Dec - 12 Jan Spirit Airlines

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

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