Cheapest return flights from San Diego to San Juan in December from 279€

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

Return flights

30 Dec - 13 Jan Frontier Airlines
10 Dec - 14 Jan Breeze Airways
18 Dec - 08 Jan Frontier Airlines
12 Dec - 16 Dec Frontier Airlines
30 Dec - 06 Jan Frontier Airlines
24 Dec - 06 Jan Frontier Airlines
02 Dec - 09 Dec Frontier Airlines
19 Dec - 08 Jan Frontier Airlines
24 Dec - 29 Dec Frontier Airlines
26 Dec - 30 Dec Frontier Airlines
01 Dec - 08 Dec Frontier Airlines
22 Dec - 27 Dec Frontier Airlines
22 Dec - 26 Dec Frontier Airlines
04 Dec - 10 Dec Delta
01 Dec - 06 Dec Delta
30 Dec - 04 Jan Frontier Airlines
29 Dec - 04 Jan Frontier Airlines
26 Dec - 04 Jan Frontier Airlines

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

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