Cheapest return flights from Los Angeles to San Juan in December from $238

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

Return flights

29 Dec - 08 Jan Frontier Airlines
31 Dec - 14 Jan Spirit Airlines
31 Dec - 15 Jan Spirit Airlines
29 Dec - 10 Jan Frontier Airlines
31 Dec - 13 Jan Spirit Airlines
31 Dec - 16 Jan Spirit Airlines
29 Dec - 14 Jan Spirit Airlines
29 Dec - 15 Jan Spirit Airlines
22 Dec - 25 Dec Frontier Airlines
29 Dec - 13 Jan Spirit Airlines
29 Dec - 16 Jan Spirit Airlines
19 Dec - 24 Dec Frontier Airlines
25 Dec - 29 Dec Frontier Airlines
19 Dec - 21 Dec Frontier Airlines
24 Dec - 31 Dec Frontier Airlines
27 Dec - 29 Dec Frontier Airlines
27 Dec - 30 Dec Frontier Airlines
26 Dec - 30 Dec Frontier Airlines
25 Dec - 31 Dec Frontier Airlines
23 Dec - 30 Dec Frontier Airlines

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

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