Cheapest return flights from Las Vegas to San Juan in December from $362

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

Return flights

31 Dec - 17 Jan Spirit Airlines
31 Dec - 10 Jan Spirit Airlines
31 Dec - 13 Jan Spirit Airlines
31 Dec - 11 Jan Spirit Airlines
31 Dec - 07 Jan Spirit Airlines
31 Dec - 12 Jan Spirit Airlines
31 Dec - 15 Jan Spirit Airlines
28 Dec - 17 Jan Spirit Airlines
28 Dec - 10 Jan Spirit Airlines
31 Dec - 20 Jan Spirit Airlines
28 Dec - 31 Dec Spirit Airlines
25 Dec - 31 Dec Spirit Airlines

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

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